D 1370 r radiation-curable secondary coating for optical fibre

FIELD: chemistry.

SUBSTANCE: radiation-curable secondary coating composition contains A) a mixture of secondary coating oligomers which is mixed with B) a first diluent; C) a second diluent; D) an antioxidant; E) a first photoinitiator; F) a second photoinitiator; G) an optional slide-enhancing additive or a mixture of slide-enhancing additives; where said mixture of secondary coating oligomers contains α) Alpha-oligomer; β) Beta-oligomer; γ) Gamma-oligomer; where said Alpha-oligomer is synthesised via reaction of αl) anhydride with α2) acrylate containing a hydroxyl group; and the reaction product of α1) and α2) then reacts with α3) epoxide; in the presence of α4) a first catalyst; α5) a second catalyst; and α6) a polymerisation inhibitor; to obtain an Alpha-oligomer; where said Beta-oligomer is synthesised via reaction of β1) acrylate containing a hydroxyl group; β2) diisocyanate; and β3) polyether polyol; in the presence of β4) a catalyst; where said catalyst is selected from a group containing copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylene diamine, 2-methyltriethylene diamine, dibutyl tin dilaurate, metal carboxylates, sulphonic acids, catalysts based on amines or organic bases, zirconium and titanium alkoxides, and ionic liquid salts of phosphonium, imidazolium and pyridinium, and said Gamma-oligomer is epoxy diacrylate. The method of applying the coating onto an optical fibre involves a) using a glass drawing column to obtain optical glass fibre; and b) applying a radiation-curable primary coating composition onto said optical glass fibre; c) optional exposure of said radiation-curable primary coating composition to radiation in order to cure said coating; d) applying a radiation-curable secondary coating composition onto said optical glass fibre; e) and exposing said radiation-curable secondary coating composition to radiation in order to said coating.

EFFECT: improved technological or operational characteristics of secondary coating, particularly improved curing and high rate of curing.

5 cl

 

[0001] This patent application claims the priority of provisional patent application U.S. No. 60/874720, "radiation Curable secondary coating R for optical fiber", filed December 14, 2006.

Background of the invention

[0002] the Present invention relates to radiation curable coatings for use as a secondary coating for optical fibers coated with the aforementioned coating optical fibers and methods for producing optical fibers with the floor.

[0003] Optical fibers typically cover two or more radiation-curable coatings. These coatings are usually applied to the optical fiber in liquid form, and then exposed to radiation to effect the curing. The type of radiation that can be used for curing coatings, must be such as to be able to initiate the polymerization of one or more radiation-curable components such coatings. Radiation suitable for curing such coatings are well known and include ultraviolet radiation ("UV") and electron beam ("E"). The preferred type of radiation for curing coatings applied when obtaining an optical fiber with a coating that is UV.

[0004] Coating that is in contact directly with optical fiber, called Pervin the m floor, and a coating that covers the primary coating, referred to as the secondary coating. In the field of radiation curable coatings for optical fibers is known that the primary coatings are softer than the secondary coating. One of the benefits of this composition, is the increased resistance to microshell.

[0005] Microengine are sharp, but microscopic curvature of the optical fiber involving local axial displacement on a few micrometers and spatial wavelengths of a few millimeters. Microengine can be caused by thermal stress and/or mechanical shearing forces. If they are present, microengine weaken the ability of the signal transmission optical fiber coating. Weakening is an undesirable decrease of the signal transmitted by the optical fiber. Relatively soft primary coating provides resistance to the emergence of microthiol optical fiber, thereby minimizing signal attenuation. Relatively more rigid secondary coating provides resistance manipulative efforts, such as efforts that occur when laying fiber coated in tape and/or the laying of cable.

[0006] In published PCT patent application WO 2005/026228 A1, published 24.3.2005 year, "Curable Liquid Resin Composition, in the name of inventors Sugimoto, Kamo, Shigemoto, Komiya and Steeman, described and claimed curable liquid polymer composition comprising: (A) a urethane(meth)acrylate having a structure derived from the polyol, and srednecenovogo molecular weight of 800 g/mol or more, but less than 6000 g/mol, and (B) a urethane(meth)acrylate having a structure derived from the polyol, and srednecenovogo molecular weight of 6000 g/mol or more, but less than 20,000 g/mol and the total amount of the component (a) and component (b) is 20-95 wt.% from the curable liquid polymer composition, and the content of component (C) is 0.1-30 wt.% from the total mass of the component (a) and component (B).

[0007] it Was proposed a variety of materials for use as the polymer main chain of the urethane oligomer. For example, the urethane oligomers used polyols, such as hydrocarbon polyols, simple polyether polyols, polycarbonate polyols and complex polyether polyols. Complex polyether polyols are particularly attractive because of their commercial availability, resistance to oxidation and versatility, allowing you to adapt the characteristics of the coating by modification of the main chain. The use of complex polyether polyols of the polymer main chain in urethaneacrylate the oligomer described, for example, in U.S. patents№№5146531, 6023547, 6584263, 670977, 6775451 and 6862392, as well as the European patent 539030 A.

[0008] the Problems of cost, use and processing of urethane precursors led to the use of basurmanova oligomers in the coating compositions. For example, basurmanova complex preferability oligomers used in the radiation curable compositions of coatings for optical fibres. In the Japan patent 57-092552 (Nitto Electric) described the coating material of the optical fiber containing poliafito(meth)acrylate, where koinopolitia main chain has an average molecular weight of 300 or more. In the application for patent in Germany 04 12 68 60 A1 (Bayer) described a matrix material for tricholimnas tape consisting of lozhnopolaugitionah oligomer, 2-(N-butyl-carbamyl)acrylate as a reactive diluent and 2-hydroxy-2-methyl-1-phenylpropane-1-it as photoinitiator. In the patent application of Japan No. 10-243227 (publication No. 2000-072821) described curable liquid polymer composition containing lozhnopolojitelny oligomer, which consists of a simple polyetherdiol having as the active end groups of the two dicyclomine or anhydrides and ending with hydroxyethylacrylate. In U.S. patent 6714712 B2 describes radiation-curable coating composition containing lozhnopolojitelny and/or Alcide(meth)acrylic is fair oligomer, containing polyacidic the remainder or its anhydride, optionally a reactive diluent, and, optionally, photoinitiator. Also, in the article, Mark D. Soucek and Aaron H. Johnson described the use hexahydrophthalic acid hydrolytic stability, "New Intramolecular Effect Observed for Polyesters: An Anomeric Effect," JCT Research, Vol.1, No. 2, p.111 (April 2004).

[0009] Despite attempts in the prior art to develop a coating composition containing basurmanova oligomers, there is still a need in the secondary coverages that are cost-effective, while meeting the many different desirable requirements, such as improved utverjdaemogo and high speed curing and flexibility in application, while still achieving the desirable physical characteristics of different applied coatings.

[0010] In U.S. patent 6630242 B1 describes radiation-curable composition for coating optical fibers. In Example 9 of this document describes how to obtain the colored outer primary coatings (also known as secondary coverage). However, none of these outer primary coating does not contain described here alpha oligomer, which is synthesized by first response anhydride containing hydroxyl acrylate group, and then reacting the reaction product with an epoxide in the Pris is under the first and second catalyst and polymerization inhibitor.

[0011] Although the currently available number of secondary coatings, it is advisable to offer new secondary coatings that have superior technological and/or operational characteristics in comparison with existing coatings.

The invention

[0012] the First aspect of the claimed invention now is a radiation-curable composition of the secondary coating, and said composition contains:

A) a mixture of oligomers of the secondary coating, which is mixed with

B) a first diluent;

C) a second diluent;

D) an antioxidant;

E) the first photoinitiator;

F) a second photoinitiator;

G) optional, improves the slip additive or a blend of improving slip additives;

these mixture of oligomers secondary coating contains:

α) alpha oligomer;

β) Beta oligomer;

γ) Gamma oligomer;

and mentioned the alpha oligomer is synthesized by the reaction of

α1)anhydride with

A2) containing hydroxyl group acrylate;

and the reaction product of α1 and α2) then further reacted with

α3) of the epoxide in the presence of:

α4) of the first catalyst;

α5) of the second catalyst;

α6) inhibitor of polymerization;

obtaining the alpha oligomer;

these Beta oligomer synthesized by the reaction of

β1) steriade what about the hydroxyl group of the acrylate;

β2) diisocyanate;

β3) simple polyetherpolyols; in the presence of

β4) catalyst;

these catalyst selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylenediamine, 2-methyldiethylamine, dilaurate dibutylamine, carboxylates of metals, sulfonic acid catalysts based on amines or organic bases, alkoxides of zirconium and titanium, and ionic liquid phosphonium salts of imidazole and pyridinium;

these Gamma oligomer is epoxidized.

[0013] the Second aspect of the claimed now of the invention is a method of coating an optical fiber, including:

a) column extraction of glass with receiving optical fiber;

b) coating on said optical fiber radiation-curable composition of the primary coating;

c) optionally contacting the mentioned radiation-curable composition of the primary coating with radiation for curing of the coating;

d) coating on said optical fiber radiation-curable composition of the secondary coating according to the first aspect of the claimed invention now;

(e) contacting mentioned radiation-curable composition of the secondary coating with radiation to reject the tion of this coverage.

[0014] a Third aspect of the claimed invention now is wire covered with the first and second layer and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the wire, and the second layer is utverjdenie radiation curable secondary coating according to the first aspect of the claimed invention now in contact with the outer surface of the primary coating,

this utverjdenie secondary coating on the wire has the following properties after initial cure and after one month aging at 85°C and a relative humidity of 85%:

A) A % RAU of from 80% to 98%;

B) in-situ modulus of between 0,60 GPA 1.90 GPA;

C) TC tube from 50°C to 80°C.

[0015] the Fourth aspect of the claimed invention now is an optical fiber coated with the first and second layer and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the optical fiber and the second layer is utverjdenie radiation curable secondary coating according to the first aspect of the claimed invention now in contact with the outer surface of the primary coating,

this utverjdenie secondary coating on the optical fiber has the following properties which after initial cure and after one month aging at 85°C and a relative humidity of 85%:

A) A % RAU of from 80% to 98%;

B) in-situ modulus of between 0,60 GPA 1.90 GPA; and

C) TC tube from 50°C to 80°C.

Detailed description of the invention

[0016] throughout this patent application the following abbreviations have the following meanings:

AbbreviationValue
EIT2,6-di-tert-butyl-p-cresol, supplied Fitz Chem.
CASmeans the registration number of the Chemical Abstracts.
CN-120Zepoxidized, supplied by Sartomer.
DABCO1,4-diazabicyclo[2.2.2]octane, supplied by Air Products.
DBTDLdilaurate dibutylamine supplied OMG Americas.
NOPEhydroxyethylacrylate supplied by BASF.
NRAhexahydrophthalic anhydride supplied by Milliken Chemical.
Irgacure 1841-hydroxycyclohexane, supplied by Ciba Geigy.
Irganox 1035thiodiethyl-bis(3,5-di-tert-butyl-4-hydrox hydrocinnamate),
supplied by Ciba Geigy.
SR-506isobutylacetate, supplied by Sartomer.
Photomer 4066the acrylate of ethoxylated Nonylphenol, supplied by Cognis.
Pluracol 1010polypropylenglycol (MM=1000)supplied by BASF.
SR-306HPdiacrylate tripropyleneglycol (TPGDA)supplied
Sartomer.
SR-349diacrylate ethoxylated bisphenol a supplied
Sartomer.
TDIthe 80/20 mixture of 2,4 - and 2,6-isomers colordistance,
supplied by BASF.
IPDIisophorondiisocyanate supplied Voeg.
TPO2,4,6-trimethylbenzenesulfonamide supplied
Chitech.

[0017] the First aspect of the claimed invention now is from eritema radiation composition of the secondary coating, moreover, the above-mentioned composition contains:

A) a mixture of oligomers of the secondary coating, which is mixed with

B) a first diluent;

C) a second diluent;

D)an antioxidant;

E) the first photoinitiator;

F) a second photoinitiator;

G) optional, improves the slip additive or a blend of improving slip additives;

these mixture of oligomers secondary coating contains:

α) alpha oligomer;

β) Beta oligomer;

γ) Gamma oligomer;

and mentioned the alpha oligomer is synthesized by the reaction:

α1) anhydride with

A2) containing hydroxyl group acrylate;

and the reaction product of α1 and α2) then further reacted with

α3) of the epoxide in the presence of

α4) of the first catalyst;

α5) of the second catalyst;

α6) inhibitor of polymerization;

obtaining the alpha oligomer;

these Beta oligomer synthesized by the reaction of

β1) containing hydroxyl group of the acrylate;

β2) diisocyanate;

β3) simple polyetherpolyols; in the presence of

β4) catalyst;

these catalyst selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylenediamine, 2-methyldiethylamine, dilaurate dibutylamine, carboxylates of metals, sulfonic acid catalysts are amine-based sludge is organic bases, alkoxides of zirconium and titanium, ionic liquid phosphonium salts of imidazole and pyridinium; and

these Gamma oligomer is epoxidized.

Alpha oligomer

[0018] the alpha oligomer usually get under the 2-stage process of synthesis, including first Union anhydride with a hydroxyl-containing (meth)acrylate.

[0019] the Anhydride used to obtain the alpha oligomer, which are selected from the group including hexahydrophthalic anhydride (NRA), methylhexahydrophthalic anhydride (MNRE), succinic anhydride (SA), phthalic anhydride (PA) and maleic anhydride (MA), and preferred is NRA. Upon receipt of the alpha oligomer anhydride may be added to the reaction mixture in amounts of 1 wt.% up to 60 wt.%, and preferably, from 5 to 7 wt.% calculated on the total weight of the composition of the coating.

[0020] the hydroxyl-containing (meth)acrylate used to obtain the alpha oligomer, may be of any suitable type, but is usually hydroxyalkyl(meth)acrylate, such as hydroxyethylacrylate (NEA), or acrylate selected from the group consisting of polypropylenglycol (RRA), tripropyleneglycol (TPGMA), caprolactone acrylate and pentaerythritoltetranitrate (for example, SR-444). It is preferable NEA. Upon receipt of the alpha oligomer Hydroxyls Rashi (meth)acrylate may be added to the reaction mixture in a quantity comprising from 1 wt.% up to 60 wt.%, and preferably, from 3 to 5 wt.%, calculated on the total weight of the composition of the coating.

[0021] the Components tend to react at a temperature in the range from 90°C to 130°C, preferably from 100°C to 120°C, more preferably from 105°C. to 115°C. Preferably, this stage is carried out in an atmosphere of air, more preferably, the atmosphere of dry air.

[0022] In the second stage, 2-stage process epoxydodecane compound is subjected to reaction with the product of stage 1. Epoxidation connection can be diglycidyl ether, in particular glycidyloxy ether of bisphenol a, such as EPON resin sold by Hexion Specialty Chemicals, including unmodified epoxy liquid resin based on bisphenol a and epichlorohydrin with srednetsenovoj molecular weight = 700 sold as EPON 825 and EPON 828 (CAS # 25068-38-6) and EROTES YD-126 and EROTIC YD-128 epoxy resin based on bisphenol a and epichlorohydrin, sold TRIntemational. When receiving alpha-epoxide oligomer may be added to the reaction mixture in amounts of 1 wt.% up to 60 wt.%, and preferably from 5 to 9 wt.%, calculated on the total weight of the composition of the coating.

[0023] the Second stage of 2-stage process is preferably carried out in the same reaction conditions, such as temperature and reaction time as described for process 1 stage above. Due to esotericism the th nature of the reaction disclosure ring anhydride in some embodiments, the implementation it is advisable to conduct the reaction between anhydride with only part of the acrylate as long we have not reached the desired reaction temperature. Thereafter, the reaction temperature can be maintained by adding a controlled speed or adding dropwise the remainder of the acrylate. If necessary, the reaction mixture can be heated to maintain the desired reaction temperature. Usually the reaction in stage 1 of this technique is carried out in a period of about 2-4 hours, and the reaction in stage 2 of this technique is carried out in a period of about 8-15 hours.

[0024] To facilitate the reaction while receiving alpha oligomer of the present invention use a combination of catalysts. Specifically, getting the alpha oligomer is carried out in the presence of a combination of triarylphosphine catalyst such as triphenylphosphine (TPP) or trailerforum, and tertiary amine catalyst, such as triethylenediamine the catalyst is 1,4-diazabicyclo[2.2.2]octane (DABCO). The preferred combination is RTR and DABCO. The concentration of the combination of catalysts present in the reaction mixture is usually between 0.01 and 1.0 wt.%, preferably between 0.005 and 0.5 wt.%, more preferably between 0.01 and 0.4 wt.%, and even more preferably between of 0.015 wt.% and 0.3 wt.%, calculated on the total weight of the composition of the coating. The amount of the first catalyst present in the reaction mixture is usually from 0.001 wt.% up to 1 wt.%, predpochtite the flax 0.005 wt.% to 0.25 wt.%, and the amount of the second catalyst present in the reaction mixture is usually from 0.001 wt.% up to 1 wt.%, preferably from 0.01 wt.% up to 0.05 wt.% calculated on the total weight of the composition of the coating.

[0025] Receiving the alpha oligomer is carried out in the presence of a polymerization inhibitor, which is used for inhibiting polymerization of acrylate in the reaction time. The polymerization inhibitor is chosen from the group including bottled hydroxytoluene (BHT), hydroquinone and its derivatives, such as simple methyl ether of hydroquinone and 2,5-dibutylamino; 3,5-di-tert-butyl-4-hydroxytoluene; methyl-di-tert-butylphenol; 2,6-di-tert-butyl-p-cresol and the like. The preferred polymerization inhibitor is BHT. Upon receipt of the alpha oligomer polymerization inhibitor may be added to the reaction mixture in amounts comprising from 0.001 wt.% to 1.0 wt.%, and, preferably, from 0.01 to 0.05 wt.%, calculated on the total weight of the composition of the coating.

Beta oligomer

[0026] a Beta oligomer is a urethane oligomer obtained by the reaction of hydroxyl-containing acrylate, diisocyanate and simple polyetherpolyols in the presence of a catalyst and, optionally, an inhibitor of polymerization.

[0027] the hydroxyl-containing acrylate can be any of the above acrylates, and preferably, is NEA. When the floor is drop Beta hydroxyl-containing oligomer acrylate may be added to the reaction mixture in a quantity comprising from 1 wt.% up to 10 wt.%, and preferably from 3 wt.% up to 5 wt.%, calculated on the total weight of the composition of the coating.

[0028] the Diisocyanate may be of any suitable type, for example, aromatic or aliphatic. Suitable diisocyanates known in the art and include, for example, isophorondiisocyanate (IPDI), colorvision (TDI). Preferably, the diisocyanate is TDI. When receiving Beta-diisocyanate oligomer may be added to the reaction mixture in amounts of 1 wt.% up to 25 wt.%, and preferably 4 wt.% up to 6 wt.% calculated on the total weight of the composition of the coating.

[0029] a Simple polyetherpolyols can be selected from the group consisting of polyethylene glycol and polypropylenglycol. Preferably, a simple polyetherpolyols is polypropylenglycol with srednecenovogo molecular weight of from 300 g/mol to 5000 g/mol, and more preferably, polypropylenglycol with srednecenovogo molecular weight of 1000 (for example, polypropylenglycol Pluracol PI 010, supplied by BASF). When receiving a Beta oligomer simple polyetherpolyols can be added to the reaction mixture in the amount of 25 wt.% to 95 wt.%, and preferably 55 wt.% up to 75 wt.% calculated on the total weight of the composition of the coating.

[0030] the polymerization Inhibitor may be any of those described above and, before occhialino, is BHT. When receiving a Beta oligomer polymerization inhibitor may be added to the reaction mixture in amounts of 0.01 wt.% up to 1 wt.% and, preferably, from 0.02 to 0.08 wt.% calculated on the total weight of the composition of the coating.

Getting a Beta oligomer is carried out in the presence of a catalyst, such as catalyst oreanization, and the said catalyst is selected from the group including copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylenediamine, 2-methyldiethylamine, dilaurate dibutyrate (DBTDL);

the carboxylates of metals, including, but not limited to: vismutorganicheskikh catalysts, such as neodecanoic bismuth, CAS 34364-26-6; neodecanoate zinc CAS 27253-29-8; neodecanoate zirconium CAS 39049-04-2; and 2-zinc ethylhexanoate, CAS 136-53-8; sulfonic acids, including but not limited to, dodecylbenzenesulfonic acid, CAS 27176-87-0; methansulfonate acid, CAS 75-75-2; catalysts based on amines or organic bases, including, but not limited to: 1,2-dimethylimidazole, CAS 1739-84-0; and diazabicyclo[2.2.2]octane (DABCO), CAS 280-57-9 (strong basis); and triphenylphosphine; alkoxides of zirconium and titanium, including, but not limited to, piperonyl zirconium (tetramethylsilane) CAS 1071-76-7; and piperonyl titanium (tetrabutyltin) CAS 5593-70-4; and ionic liquid phosphonium salts of imidazole and pyridinium, that is their like, but not limited to, hexaflurophosphate trihexy(tetradecyl)phosphonium, CAS No. 374683-44-0; acetate 1-butyl-3-methylimidazole, CAS No. 284049-75-8; and chloride N-butyl-4-methylpyridine, CAS No. 125652-55-3; and tetradecyl(trihexy)phosphonium.

[0031] the Catalyst used to obtain the Beta oligomer, preferably is DBTDL.

[0032] the Catalyst may be used in a free, soluble and homogeneous state, or may be associated with inert agents such as silica gel or crosslinked divinyl macrostate resin, and applied in the heterogeneous condition to be filtered at the end of the synthesis of the oligomer.

[0033] When receiving Beta-oligomer catalyst may be added to the reaction mixture in amounts comprising from 0.001 wt.% to 0.5 wt.%, and, preferably, from 0.005 wt.% to 0.025 wt.% calculated on the total weight of the composition of the coating.

Gamma oligomer

[0034] Gamma oligomer is epoxidized. Preferably, Gamma aromero is appoximately oligomer based on bisphenol a, for example, the oligomer CN 120 or CN120Z sold by Sartomer. More preferably, Gamma oligomer is CN120Z. Gamma oligomer may be added to the reaction mixture in amounts of 1 wt.% up to 50 wt.%, and preferably from 20 wt.% up to 30 wt.%, calculated on the total weight of the composition of the coating.

[0035 While receiving radiation curable secondary coating according to the invention Beta-oligomer typically synthesize the first and then store. Then synthesize the alpha oligomer. Finally, Beta-oligomer and Gamma oligomer is added to the alpha oligomer with formation of a mixture of oligomers of the secondary coating.

Curing radiation, the composition of the secondary coating

[0036] the alpha oligomer, a Beta oligomer and Gamma oligomer according to the invention is mixed with formation of a mixture of oligomers of the secondary coating, which is then mixed with the first and second monomer-diluent, an antioxidant, a combination of the first and second photoinitiator and, optionally, to improve the slip additive or a blend of improving slip additives with the formation of a secondary coating.

[0037] the First solvent and the second solvent can be a monomer with acrylate or vinyl ester functional group and C4-C20is an alkyl or easy polyester group. Specific examples of such diluents include hexylaniline, 2-ethyl hexyl acrylate, isobutylacetate, dellaquila, laurelcrest, stearylamine, 2-ethoxyacetylene, Laurelville ether, 2-ethylhexylacrylate ether, isodecyladipate, isooctadecyl, N-vinylcaprolactam, N-vinyl pyrrolidone, the acrylate of tripropyleneglycol, diacrylate tripropyleneglycol, acrylamide and alkoxysilane derivatives, such as the ethoxylated laurelcrest, the ethoxylated Izod is silicrylic and the like. The first diluent preferably is isobutylacetate (for example, SR506D sold by Sartomer), and the second diluent preferably is diacrylate tripropyleneglycol (for example, SR306HP sold by Sartomer). In some embodiments, the monomer-solvent added to the coating composition in addition to the first and second monomer-solvent. The monomer-diluent may be added to the coating composition in amounts of 5 wt.% up to 80 wt.%, and preferably from 10 wt.% up to 40 wt.%, calculated on the total weight of the composition of the coating. The quantity of the first solvent present in the coating composition typically comprises from 5 wt.% up to 80 wt.%, preferably from 5 wt.% to 7 wt.%, and the amount of the second solvent present in the coating composition typically comprises from 5 wt.% up to 80 wt.%, preferably from 20 wt.% up to 25 wt.%, calculated on the total weight of the composition of the coating.

[0038] the Antioxidant may be spatial shortness of phenolic compounds, for example, 2,6-di-tert-butyl-4-METHYLPHENOL, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 4-hydroxymethyl-2,6-di-tert-butylphenol, and such commercially available compounds, as thiodiethyl-bis(3,5-di-tert-butyl-4-hydroxyl)hydrocinnamate, octadecyl-3,5-di-tert-butyl-4-hydroxyhydrocinnamate, 1,6-hexamethylene-bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate the t), and tetrakis(methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate))methane, all come Ciba Geigy as Irganox 1035, 1076, 259 and 1010, respectively. Other examples of relevant spatial difficult phenolic compounds include 1,3,5-trimethyl-2,4,6-Tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene and 4,4'-methylene-bis(2,6-di-tert-butylphenol), supplied by Ethyl Corporation as Ethyl 330 and 702, respectively. The preferred antioxidant is thiodiethyl-bis(3,5-di-tert-butyl-4-hydroxyl)hydrocinnamate (for example, Irganox 1035).

[0039] the First photoinitiator can be photoinitiator type α-hydroxycut, such as 1-hydroxycyclohexane (for example, Irgacure 184, supplied by Ciba Geigy; Chivacure 184, supplied Chitec Chemicals), 2-hydroxy-2-methyl-1-phenylpropane-1-on (e.g., Darocur 1173, supplied by Ciba Geigy), 2-benzyl-2-dimethylamino-1-(4-morpholinomethyl)butane-1-he, 2,2-dimethoxy-2-phenylacetophenone, 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-it (for example, Irgacure 907, supplied by Ciba Geigy), 4-(2-hydroxyethoxy)phenyl-2-hydroxy-2-propylketone-dimethoxy-phenylacetophenone, 1-(4-isopropylphenyl)-2-hydroxy-2-methyl-propane-1-it, 1-(4-dodecylphenyl)-2-hydroxy-2-methylpropan-1-he 4-(2-hydroxyethoxy)phenyl-2-(2-hydroxy-2-propyl)ketone. Preferably, the first photoinitiator is 1-hydroxycyclohexyl (for example, Irgacure 184).

[0041] to Improve the slip additives are commercially available. The preferred mixture improves the slip additive is a mixture sold by Dow Coming of siloxane DC-57, which is dimethylethyl(propyl(poly(EO))acetate)siloxane (registration number CAS 70914-12-4), and sold by Dow Coming siloxane mixture DC-190, which is a mixture of from 40.0 to 70.0 wt.% dimethylethyl(propyl(poly(EO)(PO))acetate)siloxane (registration number CAS 68037-64-9), from 30.0 to 60.0 wt.% acetate poly(ethylene oxide-propylene oxide)monoallyl ether (registration number CAS 56090-69-8) and less than 9,0 wt.% acetate simple polyetherpolyols (registration number CAS 39362-51-1).

[0042] the Preferred weight percents of each component of the radiation-curable composition of the secondary coating according to the claimed invention now are the following:

Alpha oligomer
anhydridefrom 5 to 7 wt.%
hydroxyl-containing (meth)acrylatefrom 3 to 5 wt.%
epoxyfrom 5 to 9 wt.%
the first catalyst0.005 to 0.25 wt.%
the second catalystfrom 0.01 to 0.05 wt.%
inhibitor of polymerizationfrom 0.01 to 0.05 wt.%
Beta oligomer
hydroxyl-containing (meth)acrylatefrom 3 to 5 wt.%
diisocyanatefrom 4 to 6 wt.%
polyetherpolyolsfrom 13 to 17 wt.%
inhibitor of polymerizationfrom 0.01 to 0.05 wt.%
catalyst0.005 to 0.025 wt.%
Gamma oligomer
epoxidizedfrom 20 to 30 wt.%
Other additives
the first monomer-diluent5 to 7 wt.%
the second monomer-diluentfrom 20 to 25 wt.%
antioxidantfrom 0.25 to 1.25 wt.%
first photoinitiatorfrom 1 to 4 wt.%
the second photoinitiatorfrom 0.25 to 095 wt.%
improves slip additives (optional)from 0.35 to 0.75 wt.%

[0043] the preferred weight percents of each component of the radiation-curable composition of the secondary coating according to the claimed invention now are the following:

Alpha oligomer47,94 wt.%
anhydride (for example, NRRA)6,86 wt.%
hydroxyl-containing (meth)acrylate (for example, NEA)4.3 wt.%
epoxide (for example, EROTES YD-126 or EROTIC YD-12 8)to $ 7.91 wt.%
the first catalyst (e.g., DABCO)0.01 wt.%
the second catalyst (for example, RTR)0.03 wt.%
inhibitor of polymerization (e.g., BHT)0.03 wt.%
Beta oligomer24,87 wt.%
hydroxyl-containing (meth)acrylate (for example, NEA)4.3 wt.%
diisocyanate (e.g., TDI)5,12 wt.%
polyetherpolyols (for example,R)15,44 wt.%
inhibitor of polymerizationfrom 0.01 to 0.05 wt.%
the catalyst (for example, DBTDL)0.01 wt.%
Gamma oligomer
epoxidized (for example,SN 120Z)23 wt.%
Other additivesto 4.52 wt.%
the first monomer-diluent (for example,6 wt.%
isobutylacetate)
the second monomer-diluent (for example, diacrylate tripropyleneglycol)22.98mm wt.%
antioxidant (for example, Irganox 1035) 0.5 wt.%
first photoinitiator (for example, Irgacure 184)2.76 wt.%
the second photoinitiator (e.g., TPO)0,76 wt.%
improves slip additives (e.g., DC-57+DC0.5 wt.%
190)(to 0.17 wt.%+of 0.33 wt.%)
Only100,33 wt.%*
*0,33 other ingredients is not present, if there is an optional mixture improves slip additives.

[0044] After found a commercial primary coating, it can be applied directly to the surface of the optical fiber. Curable by radiation of the primary coating can be any commercially available radiation curable primary coating for optical fibers. Such commercially available radiation curable primary coating supplied by DSM Desotech Inc. and others, including, but not limited to, Hexion, Luvantix and PhiChem. As the primary coating in the present invention can be used, for example, coating, described in documents EP 2089333 B1, WO 2010/053532, US 6534557 and US 6306924.

[0045] Then, on top of the primary coating is applied voiceamerica, affected by radiation and utverjdayut secondary coating. If as a secondary coating applied now declared the invention, the preferred type of radiation is UV. It is a secondary coverage for the claimed invention now designated as the secondary coating R.

[0046] After overiden secondary coating, usually put a layer of "paint", and then covered and coated optical fiber laid along the other covered and coated optical fibers in a combined tape and use a radiation-curable matrix coating in order to hold the optical fibers in the desired position in this team the ribbon.

The properties of the secondary coating

[0047] the secondary coating obtained from the coating composition according to the invention, it is desirable to have properties such as elastic modulus, fracture energy and elongation, suitable for coating optical fibers.

[0048] the secondary coating usually has the energy of destruction more than 12 j/m3, the secant modulus of less than 1500 MPa and TC more than 50°C. Preferably, the secondary coating has the energy of destruction more than 14 j/m3, the secant modulus of 200 MPa to 1200 MPa and TC 60°C. More preferably, the secondary coating has the energy of destruction more than 16 j/m3, the secant modulus of 400 MPa to 1000 MPa and TC more than 70°C. the WTO the ranks coating preferably has an elongation of from 30% to 80%. In addition, preferably, the secondary coating shows the change in equilibrium modulus 20% or less when aged for 60 days at 85°C and a relative humidity of 85%. The modulus of elasticity, as is well known, represents the rate of change of strain as a function of voltage. Graphically it is represented by the slope of the linear part of the diagram "stress-strain". The modulus of elasticity can be determined using any device suitable for obtaining the curve "stress-strain" pattern. Suitable for this analysis instruments, including those produced Instron, Inc. and, in particular, Instron 5564. When determining the modulus of elasticity of hardened coating compositions in accordance with the invention, the sample utverzhdenii radiation compositions draw on a plate with obtaining a thin film or, alternatively, formed into a rod using a cylindrical pattern. The sample is then irradiated with radiation to effect the curing. From utverzhdenii film cut one (or more, if desired average value) of the sample film. Samples (samples should not contain major defects, such as holes, burrs, significant non-uniform thickness. Then the opposite edge of the sample added to the device. During testing, the first end of the sample remains NEPAD the author, while the device moves the second end of the sample from the first to the so-called speed of the RAM. The speed of the RAM, which may be initially set at 2.54 cm/minute (1 inch/minute), can be changed if it is not suitable for a particular sample, for example, high modulus film destroyed before an acceptable curve tension-deformation. After completing the settings starting the test device, allowing to obtain a curve of stress-strain, elastic modulus and other data. It is important to note that the fracture energy can be measured in several ways. One path includes the modulus of elasticity tensile energy of destruction, which is based on the ability of a material to absorb energy up to the break point and which is determined by measuring the area under the curve of the tension-deformation. Another way of measuring the energy of fracture is the fracture toughness, based on tensile strength, to determine where you want to start with a pre-defined infinitely sharp crack of a certain length and which is used for the critical stress intensity factor obtained from the resistance of a material to the propagation of cracks.

[0049] the examples below illustrate the invention.

EXAMPLES

[0050] the testing Method robust is the STI on the gap, elongation and modulus of elasticity.

Properties tensile strength (tensile strength, percentage elongation at break and modulus of elasticity) of solidified samples radiation curable secondary coating for optical fibers have on the films using a universal measuring device Instron model 4201, equipped with a suitable personal computer and software Instron to obtain the values for tensile strength, percent elongation at break and hewer or segment of the module. Samples are prepared for testing by curing 75-micrometer film of material using a UV processor Fusion. Settings UV processor the following:

Lamp: D

Intensity: 120 W/see

Measuring intensity: IL390.

Dose. of 1.0 j/cm2;

Atmosphere: nitrogen.

The duration of conditioning at 50%humidity 16-24 hours.

[0051] Samples utverjdayut at 1.0 j/cm2in nitrogen atmosphere. Test samples having a width of 1.27 cm (0.5 inch) and a length of 12.7 cm (5 inches), cut from the film. The exact thickness of the sample is measured with a micrometer. For relatively soft coatings (e.g., having a modulus less than 10 MPa), the coating is applied and utverjdayut on a glass plate, and the individual samples are cut with this glass plate with a scalpel. The device Instrn use a torque sensor 0.9 kg (2 lb) and calculate the modulus of elasticity of the 2.5%elongation with the fitting by method of least squares graph tension-deformation. Before the test cured film can stand under conditions of temperature 23±1°C and relative humidity of 50±5% for 16 to 24 hours.

[0052] For a relatively hard surface coating applied to the film of Mylar (Mylar) and cut samples of 1.27-cm (0.5-inch) precision blade sampler Thwing Albert. In the Instron device using a torque sensor to 9.1 kg (20 pounds) and calculate the modulus of elasticity of the 2.5%elongation at intersecting at this point. Before the test cured film can stand under conditions of temperature 23±1°C and relative humidity of 50±5% for 16 to 24 hours. For test specimens the base length is 5.1 cm (2 inches), and the speed of the RAM is 2.54 cm/minute (1.00 inch/minute). All testing is carried out at a temperature of 23±1°C and relative humidity of 50±5%. All measurements determined from the average of at least 6 test specimens.

[0053] the Method of testing the DMA.

Dynamic Mechanical Analysis (DMA) is performed on the test samples with the use of the device RSA-II production Rheometric Scientific Inc. Free sample film (usually about 36 mm long, 12 mm wide and 0.075 mm thick) is inserted into the clamping device, and the temperature is initially adjusted to 80°C and maintained at this for about five minutes. During the last period of exposure at 80°C on ASEC stretch for approximately 2.5% of its original length. Also during this time, identification information about the sample, its size and specific test methods introduced in the software (RSI Orchestrator)installed on the connected PC.

[0054] All tests are conducted at a frequency of 1.0 radian dynamic method step change of temperature with steps of 2°C, the cooling-off period of 5-10 seconds, the initial deformation of about 0,001 (AL/L) when activated options autonation and avtodetali. Autonation establish in order to ensure that the sample remains under the action of tensile forces throughout the entire test cycle, and autodermal set in order to allow deformation as the sample passes through the glass transition and softens. After 5 minutes of exposure, the temperature in a heating Cabinet for samples reduce the speed to 20°C before reaching the initial temperature, usually -80°C or -60°C. the Final temperature of the test cycle is introduced into the software before the start of the test cycle so that the data about the sample ranged from the region of the vitreous state through the transition region and far in the area of high elasticity.

[0055] Test cycle start and allow you to go to completion. After completion of the test cycle on the screen whom is lutera shows a plot of E', E" and tan δ, all depending on the temperature. The experimental data for each curve smooth out with use of the program software. In this graph, identify three points, representing the transition: 1) the temperature at which E'=1000 MPa; 2) the temperature at which E'=100 MPa; 3) the temperature peak on the curve of tan δ. If the curve is tangent δ contains more than one peak, measure the temperature of each peak. One additional value obtained from this graph represents the minimum value for E' in the field of high elasticity. This value is recorded as the equilibrium modulus, E0.

[0056] the Method of testing sensitivity to water.

The layer composition utverjdayut with getting the test strips of the cured UV coating 3.8 cm × 3.8 cm × 15-mm (1.5 inches 1.5 inches to 0.6 mil). The test strip is weighed and placed in a bottle containing deionized water, which is then stored for 3 weeks at 23°C. at periodic intervals of time, for example 30 minutes, 1 hour, 2 hours, 3 hours, 6 hours, 1 day, 2 days, 3 days, 7 days, 14 days and 21 days, the test strip is removed from the vial and gently wipe dry with a paper towel and re-weighed. The percentage of water absorption is recorded as 100x(weight after immersion - weight before immersion)/(weight before immersion). Peak absorption in the water represents the highest value of water absorption, achieved in a 3-week period of immersion. After a 3-week period of the test strip is dried in a heating Cabinet at 60°C for 1 hour, cooled in a desiccator for 15 minutes and re-weighed. The percentage of recoverable water is recorded as 100×(weight before immersion - weight after drying)/(weight before immersion). Sensitivity to water log |peak absorption of water|+|recoverable water|. Experience three test strips to improve the accuracy of the test.

[0057] the test Method of the refractive index.

The refractive index of the hardened compositions determined by the method of strips Becke, which entails matching the refractive index of thinly sliced strips utverzhdenii composition with immersion liquids with known properties of refraction. The test is carried out under a microscope at 23°C and using light with a wavelength of 589 nm.

[0058] test Method viscosity.

The viscosity is measured using a Physica viscometer MS. Test samples are examined and, if there is an excessive amount of bubbles, take measures to remove most of the bubbles. No need to remove all the bubbles at this stage, because the loading of the sample introduces some amount of bubbles. The device is set up on the ordinary system of Z3, which is used. Sample loading is fair in disposable aluminum glass syringe for measuring 17 cm 3. The sample in the Cup investigate and, if it contains an excessive amount of bubbles, remove them by a direct method, such as centrifugation, or leave it for sufficient to enter the time in order to allow the bubbles to exit the fluid volume. Bubbles on the surface of the liquid is acceptable. The pendulum gently immersed in the liquid in a measuring Cup, and a glass with a pendulum set in the device. The temperature of the sample give the opportunity to be balanced with the temperature of the circulating fluid, after waiting for five minutes. Then the rotational speed is set at the desired value, which gives the desired shear rate. The desired value of the shear rate is easily determined by the average expert in the art based on the expected interval of the sample viscosity. The shear rate is usually 50 sec-1or 100 sec-1. The panel reads the value of the viscosity and, if the viscosity varies slightly (less than 2% relative change) within 15 seconds, the measurement is complete. If not, then it is possible that the temperature has not reached the equilibrium value or that the material is changed because of the shift. In the latter case, further testing under different shear rates to determine properties of the sample viscosity. The recorded results are the average values of ve the bone for three test specimens. Results are recorded either in centipoise (SDR), or in millipascal seconds (MPa·s).

EXAMPLES 1-3

[0059] Get three different parties of the secondary coating R in accordance with the invention, the compositions of which are indicated in the tables contained in paragraphs [0042] and [0043] (Examples 1, 2 and 3), and evaluate their physical properties. Properties tensile hardened secondary coatings have on the rods according to the method described in U.S. patent No. 6862392. The bars get filled elastomeric transparent tubes from silicone rubber composition of the coating and exposure of this composition one Joule of UV radiation from the D lamp nitrogen purging.

[0060] If the tubes are rotated by 180°, there is no need to be cured of the tube in aluminum foil. If the tube does not rotate 180°, the tube needs to be cured on aluminum foil.

[0061] the Rods are removed from the tubes by gently pulling the tube from the end of the rod and cutting off an empty part of the tube with a razor blade. Then the end of the rod clamp forceps and the tube is slowly pulled away from the terminal.

[0062] the tensile Strength, elongation, modulus of tensile elasticity, fracture energy, Emaxand the viscosity of the compositions of the secondary coating.

Properties tensileMethod Example 1Example 2Example 3
test
Tensile strength (MPa)U.S. patent5962,255,7
6862392
Elongation at break (%)U.S. patent47,341,337,0
6862392
The modulus of tensile elasticityU.S. patent1047,21142,11091,0
(MPa)6862392
The fracture energy (j/m3) U.S. patent2119,515,7
6862392
Emax=%U.S. patent56,354,5of 40.9
6862392
DMAMethodExample 1Example 2Example 3
test
Tempi E'=1000 MPa (°C)COI-e DMA47,546,546,1
Tempi E'=100 MPa(°C)COI-e DMA80,678,179,5
Tempi tangent δmax(C) COI-e DMAof 76.875,477,2
RavnrollMPaMPaMPa
Equally. modulus (MPa)29,237,438,6
ViscosityMethodExample 1Example 2Example 3
test(MPa·s)(MPa·s)(MPa·s)
25°CViscosity679770767033
35°CViscosity240023852480
45°CViscosity9849451012
55°C466439476
65°CViscosity231218230

Discussion the simulator exhaust columns

[0063] In the early years of the development of coatings of optical fibers all newly developed primary and secondary coatings were first tested on the properties of their utverzhdenii film, and then sent for evaluation to the columns of pulling the fiber. It was found that all of the coatings that were required to pull, at most 30% of them felt on the extraction column because of the high cost and difficulties with schedule planning. The time from the moment when the surface was first drawn up, until the moment when it is applied to fiberglass, usually accounted for approximately 6 months, which has slowed down the development cycle of the product.

[0064] In the technology of radiation-curable coatings for optical fibers, it is known that when either the primary coating, a secondary coating applied to the glass, its properties often differ from the properties of flat utverzhdenii film of the same coating. I believe that this is due to the fact that the coating on the fiber and flat film coatings have differences in size about is Azza, geometry, the intensity of UV radiation, the total dose received UV radiation, speed of processing, the temperature of the substrate, the curing temperature and, possibly, conditions inert atmosphere of nitrogen.

[0065] in order to make possible the development of more reliable coverage and a shorter introduction, we developed equipment that would support curing, similar to the conditions existing at manufacturers of fiber. This type of alternative equipment for applying and curing should be easy to use, require low maintenance and give reproducible process parameters. Name of equipment - simulator extraction columns", hereinafter abbreviated as designated here as "CPI". Simulators exhaust columns are designed according to customer order and are based on a detailed study of the structural elements of the real pillars of glass fiber drawing. All measurements (position lamps, the distance between the rungs of the coating, the gaps between the steps of coating and UV lamps etc.) duplicated with columns of glass fiber drawing. This helps to simulate process conditions used in the industrial equipment of pulling the fiber.

[0066] One of the known CPI has five lamps Fusion F600 - a twelve top step coverage and three on the bottom. The second lamp at each stage can be rotated at different angles between 15-135°, allowing a more detailed study of the curing profile.

[0067] the "Core"used in the known CPI, is a stainless steel wires with a diameter of 13.0,0±1,0 μm. To assess the available applicators for pulling the fiber of different designs from different vendors. This configuration allows you to apply a coating on the optical fiber under conditions similar to those that take place at industrial enterprises.

[0068] the exhaust Simulator columns have been used to deepen the analysis of radiation-curable coatings for optical fiber. Method of measuring in-situ modulus of the primary coating, which can be used to determine the strength of the coating, the degree of curing and performance of fiber in different environments was presented in 2003 Hawthorne RAM Steeman, J.J.M. Slot, H.G.H. van Melick, A.A.F. v.d. Ven, H. Cao, and R. Johnson in the Materials of the 52nd International Symposium cable-wire products (the Proceedings of the 52nd IWCS), p.246 (2003). In 2004 .Steeman with co-authors reported how the rheological profile of the coatings of the optical fibers at high shear rate can be used to predict the maintainability of the coatings at higher speeds stretching, see RAM Steeman, W.Zoetelief, H. Cao, and M. Bulters, Proceedings of the 53rd IWCS, p.532 (2004). Simulator extraction columns can be used to further study the properties of the primary and secondary coating on the optical fiber.

[0069] These test methods are applicable to coatings on the wire or coatings on optical fiber:

[0070] test Method % RAU secondary coverage: the Degree of curing the outer coating on the optical fiber is determined using infrared spectroscopy with Fourier transform (FTIR with diamond ATR snap. The parameters of the device FTIR include: 100 jointly imposed scans, resolution 4 cm-1, DTGS detector spectral range 4000-650 cm-1and approximately 25%reduction in the default rate mirrors to improve the ratio of signal to noise ratio. Requires two spectra: one for the uncured liquid coating, which corresponds to the coating on the fiber, and one for the external coating on the fiber. Range of liquid coatings obtained after complete coverage of the diamond surface coating. The liquid must be from the same batch that was used for coating the fiber or conductor, but the minimum requirement is that it should have the same composition. The final format of the spectrum must be on the uptake.

[0071] the Fiber set on the diamond, and the fiber have to is enough pressure to to obtain a spectrum that is suitable for quantitative analysis. For maximum spectral intensity of the fiber should be placed in the center of the diamond parallel to the direction of the infrared beam. If one fiber have insufficient intensity, the diamond can be located 2-3 fibers parallel to each other and as close as possible. The final format of the spectrum must be on the uptake.

[0072] for the liquid, and to the cured coating measure the peak area as the peak of the double bond of the acrylate at 810 cm-1and control the peak in the field of 750-780 cm-1. The peak area determined using the method baseline, where the baseline is chosen tangent to the minima of the absorption on both sides of the peak. Then determine the area under the peak and above the base line. The limits of integration for liquid and cured sample are not identical, but similar, especially for the control of the peak.

[0073] the Ratio of the peak area of the acrylate to the square of the control peak defined as a liquid and cured samples. The degree of cure, expressed as a percentage reacted acrylate unsaturation (% RAU), calculated by the following equation:

where RLis the ratio of the square of the liquid sample, a RFis the ratio of the square overgeneralising coverage.

[0074] the Method of testing in-situ modulus secondarycover:In-situ modulus of the secondary coating on the glass fiber or metal wire fiber with a double coating (soft primary coating and a solid secondary coverage) measured in this test method. For preparation of a sample removed from the fiber layers covering length ~2 cm in the form of a solid tube of coating from one end of the fiber with the coating, first immersing the fiber coated with the tool for removal of isolation in liquid N2 for at least 10 seconds, and then pulling the tube coatings quick movement, until the layers of the coating remain hard. Device DMA (Dynamic mechanical analysis): Rheometrics Solids Analyzer (RSA-II) is used to measure the elastic modulus of the secondary coating. In the case of a fiber with a double coating secondary coating has a higher modulus of elasticity than the primary coating; therefore, the contribution of the primary coating in the results of the dynamic tensile test carried out with a pipe coatings can be ignored. For RSA-II, in which adjustment of the distance between the two clamps is limited, the sample tube coatings may be shorter than the distance between the two clamps. A simple sample holder, made of metal plate, bent and hollow at the open end of the screw, is used for the BAP is someone holding the sample tube coating the bottom end. Shift the clamping device in the center of the lower clamp and tighten the clamp. Use tweezers to straighten the tube coating in a vertical position through the top clamp. Close and tighten the top clamp. Offset deformation correct up until pretensioning not accounted for ~10 year

[0075] the Test was performed at room temperature (~23°C). When dynamic mode tensile test DMA frequency test set at 1.0 radians/second; the deformation is 5E-4. The geometry type choose cylindrical. The sample length equal to the length of the tube coatings between the upper edge of the metal clamping device and the lower clamp 11 mm in our test. The diameter (D) was administered equal to 0.16 mm according to the following equation:

where Rsand Rpare the outer radii of the secondary and primary coatings, respectively. For the calculation using the standard geometry of the fiber, Rs=122,5 μm and Rp=92,5 μm. Produce dynamic time base and write 5 experimental points of the storage modulus tensile means that the value E is the average of all experimental points. This measured module E is then further corrected by multiplying with a correction factor, which uses the actual geometry of the sample. coefficient correction is as follows: (122,5 2-92,52)/. For optical fibers actual geometry of the sample, including the values of Rsand Rpmeasure on RK Fiber Geometry System. For the wire fibers values of Rsand Rpmeasured under a microscope. Given the value of E is the average of three test specimens.

[0076] the Method of testing in-situ measurement of Tcthe primary and secondary coating:

The glass transition temperature (Tc) the primary and secondary coatings on glass or metal wire fiber (wire) with a double coating is measured by this method. These glass transition temperature denoted here as Tctube".

[0077] To obtain a sample with a fiber draw layers covering length ~2 cm in the form of a solid tube of coating from one end of the fiber with the coating, first immersing the fiber coated with the tool for removal of isolation in liquid N2for at least 10 seconds, and then pulling the tube coatings quick movement, until the layers of coatings remain hard.

[0078] the Device DMA (Dynamic mechanical analysis): apply Rheometrics Solids Analyzer (RSA-II). In the case of RSA-II gap between the two clamps RSA-II can be extended up to 1 mm Gap initially set to the minimum level, adjusting the offset strain. A simple sample holder, made of metal plus the ins, bent and hollow at the open end of the screw, are used for strong retention of the sample tube coating for the bottom end. Shift the clamping device in the center of the lower clamp and tighten the clamp. Use tweezers to straighten the tube coatings to the vertical through the top clamp. Close and tighten the top clamp. Closed heat chamber and set temperature of a heating Cabinet at a value higher than TC secondary coating, or 100°C, using liquid nitrogen as a medium for temperature control. When the temperature of the heating Cabinet has reached this value, the offset deformation correct up until the pre-tension is in the range from 0 g to 0.3 g

[0079] When conducting dynamic tests DMA at step temperature change of the frequency of the test set at 1.0 radians/second; the deformation is 5E-3; a step change in temperature is 2°C, and the exposure time is 10 seconds. The geometry type choose cylindrical. Set geometry parameters were the same that were used for testing in-situ modulus of the secondary coating. The sample length equal to the length of the tube coatings between the upper edge of the metal clamping device and the lower clamp 11 mm in our test. The diameter (D) was administered equal to 0.16 mm according to the following EQ is the:

where Rsand Rpare the outer radii of the secondary and primary coatings, respectively. For the calculation using the standard geometry of the fiber, Rs=122,5 μm and Rp=92,5 mm.

[0080] the Dynamic test at step temperature change is carried out from the initial temperature (in our test 100°C) to a temperature below Tcprimary coverage or -80°C. After the test cycle peaks of the curve tangent (tan δ log Tcprimary coverage (corresponding to a lower temperature) and Tcthe secondary coating (corresponding to a higher temperature). It should be noted that the measured glass transition temperature, especially for the glass transition temperature of the primary coating should be considered as relative values of glass transition temperatures for the layers of coatings on the fiber due to the shift of the tan δ due to the complicated structure of the tube surfaces.

Examples of simulators exhaust columns

Commercially available radiation curable primary coating and different ways now declared secondary coating applied to the wire using a simulator exhaust column. The wire is passed with five different linear velocity: 750 m/min, 1200 m/min to 1500 m/min, 1800 meters/minute and 2100 m/mi is UTU.

The pulling is done using the mode or "wet on dry"or "wet on wet". Mode "wet on dry" means that the liquid primary coating is applied wet, and then liquid primary coating utverjdayut to a hard layer on the wire. After the primary coating overiden cause secondary coating and then also utverjdayut. Mode "wet on wet" means that the liquid primary coating is applied wet, then wet cause secondary floor, and then both coverages, primary and secondary, utverjdayut.

Spend a lot of test cycles with a commercially available radiation curable primary coating and compositions claimed now the secondary coating. Utverjdenie secondary coating on the wire have on the initial %RAU, the initial in-situ modulus and the initial Tcof the tube. The wire coating is then subjected to aging for one month at 85°C and a relative humidity of 85%. Utverjdenie secondary coating on the wire then test on the % RAU, in-situ modulus and Tctube.

Tuning simulator exhaust columns:

- use the die Seidle (Zeidi): S99 for 1° and S105 to 2°.

- speed 750, 1000,1200,1500,1800 and 2100 m/min

- use the 5 lamps in the process of "wet on dry" and 3 lamps in the process of "wet on wet".

- (2) 93 In the/cm 2(600 W/inch2D Fusion UV lamp is used at 100% for odnoradiusnyh coatings.

- (3) 93 W/cm2(600 W/inch2D Fusion UV lamp is used at 100% for degradasi coatings.

- Temperature for these two coatings is 30°C. the Die is also set to 30°C.

- The level of carbon dioxide is 7 liters/min at each filiere.

- The level of nitrogen is 20 liters/min on each lamp.

- Pressure for odnogolosnogo coverage is 1 bar at 25 m/min up to 3 bar at 1000 m/min

- Pressure for degradating coverage is 1 bar at 25 m/min and up to 4 bar at 1000 m/min

[0081] Utverjdenie radiation curable secondary coating D on the wire appeared to be having the following properties:

Linear speed% RAU secondary% RAU secondary coating
(m/min)coverage (Primary)(1 month)
75090-9494-98
120086-9091-95
150082-8690-94
180083-8789-93
210080-8489-93
Linear speed (m/min)In-situ modulus secondary coating (HPa)In-situ modulus secondary coating (HPa) (1 month)
7501,30-1,701,40-1,90
12001,00-1,401,50-1,70
15001,00-1,401,30-1,70
18001,00-1,401,10-1,50
21000,60-1,001,00-1,40
Linear speedThe values of TcsecondaryThe values of Tcsecondary
(m/min) tube (°C) (initial)tube (°C) (1 month)
75068-8068-80
120065-6967-71
150060-6461-65
180061-6561-65
210050-5855-59

Therefore, it is possible to describe and claim the wire covered with the first and second layers and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the wire, and the second layer is utverjdenie radiation curable secondary coating of the claimed invention now in contact with the outer surface of the primary coating,

this utverjdenie secondary coating on the wire has the following properties after initial cure and after one month aging at 85°C and relative humidity of 85%:

A) A % RAU of from 80% to 98%;

B) in-situ modulus of between 0,60 GPA 1.90 GPA;

C) TC trunk is from 50°C to 80°C.

Using this information, it is also possible to describe and to declare an optical fiber covered with the first and second layers and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the optical fiber and the second layer is utverjdenie radiation curable secondary coating of the claimed invention now in contact with the outer surface of the primary coating,

this utverjdenie secondary coating on the optical fiber has the following properties after initial cure and after one month aging at 85°C and relative humidity of 85%:

A) A % RAU of from 80% to 98%;

B) in-situ modulus of between 0,60 GPA 1.90 GPA;

C) TC tube from 50°C to 80°C.

[0082] the Use of terms in the singular in the context of describing the invention (especially in the context of the following claims) should be considered as related to a single and plural, if there is not specified or expressly contrary to the context. The terms "comprising", "having", "including" and "comprising" should be considered as a non-limiting terms (i.e. meaning "including, but not limited to,") unless otherwise stated. Specifying ranges of values intended only for the fact that the s a quick way to list each individual individual values, falling in this range, if this is not specified, and each separate value is incorporated into the description, as if it had been listed here individually. All methods described here can be performed in any suitable order, if this is not specified or otherwise contrary to the context. The use of any and all examples, or exemplary expressions (e.g., "such as")provided here is intended merely to better illuminate the invention and does not impose restrictions on the scope of the invention unless stated otherwise. No expressions in the description should not be construed to indicate any claimed element as essential to the practical implementation of the invention.

1. Curing radiation, the composition of the secondary coating, and said composition comprises:
A) a mixture of oligomers of the secondary coating, which is mixed with
B) a first diluent;
C) a second diluent;
D)an antioxidant;
E) the first photoinitiator;
F) a second photoinitiator; and
G) optional, improves the slip additive or a blend of improving slip additives;
these mixture of oligomers secondary coating contains:
α) alpha oligomer;
β) Beta oligomer;
γ) Gamma oligomer;
and mentioned the alpha oligomer is synthesized by the reaction of
α1) anhydride with
α2) provided the hydroxyl group acrylate;
and the reaction product of α1 and α2) then further reacted with
α3) of the epoxide in the presence of
α4) of the first catalyst;
α5) of the second catalyst; and
α6) inhibitor of polymerization;
obtaining the alpha oligomer;
these Beta oligomer synthesized by the reaction of
β1) containing hydroxyl group of the acrylate;
β2) diisocyanate; and
β3) simple polyetherpolyols; in the presence of
β4) catalyst;
these catalyst selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylenediamine, 2-methyldiethanolamine, dilaurate dibutylamine, carboxylates of metals, sulfonic acid catalysts based on amines or organic bases, alkoxides of zirconium and titanium and ionic liquid phosphonium salts of imidazole and pyridinium, and
these Gamma oligomer is epoxidized.

2. The method of coating an optical fiber, which includes:
a) column extraction of glass with receiving optical fiber;
b) coating on said optical fiber radiation-curable composition of the primary coating;
c) optionally contacting the mentioned radiation-curable composition of the primary coating with radiation for curing of the coating;
d) application at the UE is mentioned optical fiber radiation-curable composition of the secondary coating according to claim 1; and
(e) contacting mentioned radiation-curable composition of the secondary coating to radiation to cure the coating.

3. The method according to claim 2, in which the work mentioned column extraction of glass is performed with a linear speed between 750 m/min and 2100 m/min

4. The wire is covered with the first and second layer and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the wire, and the second layer is utverjdenie radiation curable secondary coating according to claim 1, in contact with the outer surface of the primary coating,
this utverjdenie secondary coating on the wire has the following properties after initial cure and after one month aging at 85°C and a relative humidity of 85%:
a)a% RAU of from 80% to 98%;
B) in-situ modulus of between 0,60 GPA 1.90 GPA; and
C) TC tube from 50°C to 80°C.

5. The optical fiber coated with the first and second layer and the first layer is utverjdenie radiation curable primary coating that is in contact with the outer surface of the optical fiber and the second layer is utverjdenie radiation curable secondary coating according to claim 1, in contact with the outer surface of the primary coating, while utverjdenie secondary floor is and the optical fiber has the following properties after initial cure and after one month aging at 85°C and a relative humidity of 85%:
a)a% RAU of from 80% to 98%;
B) in-situ modulus of between 0,60 GPA 1.90 GPA; and
C) Tctubes from 50°C to 80°C.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: radiation curable primary coating composition contains at least one urethane-(meth)acrylate functional oligomer and a photoinitiator, wherein the urethane-(meth)acrylate functional oligomer is a product of reaction of hydroxyethyl acrylate, a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, isophorone diisocyanate and polyether polyol in the presence of a catalyst and an inhibitor, where the urethane-(meth)acrylate functional oligomer contains (meth)acrylate groups, at least one polyol backbone chain and urethane groups, where 15% or more of the urethane groups are derivatives of one of 2,4- and 2,6-toluene diisocyanate or both, where at least 15% of the urethane groups are derivatives of isophorone diisocyanate, and where said urethane-(meth)acrylate functional oligomer has number-average molecular weight from at least 4000 g/mol to at least 15000 g/mol; and where the cured film of the radiation curable primary coating composition has equilibrium modulus of elasticity, measured as indicated in the description, which is equal to at least 1.2 MPa. The invention also relates to a method of coating glass optical fibre, involving (a) using a glass drawing column to obtain glass optical fibre, preferably at linear velocity between 750 m/min and 2100 m/min; (b) applying the radiation curable primary coating composition onto the surface of the optical fibre; and (c) optional exposure to radiation to cure said radiation curable primary coating composition. The cured primary coating composition on the optical fibre and conductor has the following properties after initial curing and after one month at 85°C and 85% relative humidity:A) % RAU from 84% to 99%; B) in-situ modulus of elasticity between 0.15 MPa and 0.60 MPa; and C) Tc of the tube -25°C to - 55°C.

EFFECT: improved coating characteristics.

13 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: radiation-curable secondary coating composition contains a mixture of secondary coating oligomers which is mixed with a first diluent monomer; a second diluent monomer; an optional third diluent monomer; an antioxidant; a first photoinitiator; a second photoinitiator; and, optionally, a slide-enhancing additive or a mixture of slide-enhancing additives; wherein said mixture of secondary coating oligomers contains: α) Omega-oligomer; and β) Upsilon-oligomer; wherein said Omega-oligomer is synthesised from reaction of α1) hydroxyl-containing (meth)acrylate; α2) isocynate; α3) polyether polyol; and α4) tripropylene glycol; in the presence of α5) a polymerisation inhibitor; and α6) a catalyst; to obtain an Omega-oligomer; wherein said catalyst is selected from a group comprising copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine, triethylenediamine, 2-methyltriethylenediamine, dibutyl tin dilaurate, metal carboxylates, sulphonic acids, catalysts based on amines or organic bases, zirconium and titanium alkoxides and ionic liquid salts of phosphonium, imidazolium and pyridinium; and wherein said Upsilon-oligomer is epoxy diacrylate. The method of applying the coating onto an optical fibre involves operation of a glass drawing column to obtain optical glass fibre; applying a radiation-curable primary coating composition onto said optical glass fibre; optional exposure of said radiation-curable primary coating composition to radiation in order to cure said coating; applying a radiation-curable secondary coating composition in paragraph 1 onto said optical glass fibre; and exposing said radiation-curable secondary coating composition to radiation in order to said coating.

EFFECT: obtaining optical fibre and a conductor having a cured secondary coating.

6 cl

FIELD: chemistry.

SUBSTANCE: radiation-curable primary coating composition contains an oligomer, a diluent monomer; a photoinitiator; an antioxidant; and an adhesion promoter; wherein said oligomer is the reaction product of: a hydroxyethyl acrylate; an aromatic isocyanate; an aliphatic isocyanate; a polyol; a catalyst; and an inhibitor. Said oligomer has number-average molecular weight ranging from at least 4000 g/mol to less than or equal to 15000 g/mol; and wherein said catalyst is selected from a group comprising dibutyl tin dilaurate; metal carboxylates, sulphonic acids; catalysts based on amines or organic bases, zirconium and titanium alkoxides and ionic liquid salts of phosphonium, imidazolium and pyridinium.

EFFECT: obtaining a hardened film of said radiation-curable primary coating composition.

6 cl

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for protective coating for window glass. The invention discloses a composition which contains a) one or more film-forming resins which contain acrylic and/or methacrylic functional fragments; b) one or more reactive diluents which contain an acrylate functional group; c) one or more compounds which promote adhesion of the composition to glass, which contain a product of a Michael reaction, having four or more siloxane groups, at least one acrylate group and a tertiary amine group; d) one or more filler substances, capable of endowing compositions with wear-resistance in solidified state; and e) one or more compounds which can react with a film-forming resin, which contain at least one acid fragment.

EFFECT: composition ensures high adhesion of the coating to adhesive substances on a structure in the absence of an undercoat.

16 cl, 5 dwg, 28 tbl, 38 ex

FIELD: chemistry.

SUBSTANCE: invention relates to processing polyvinyl chloride through dispersion, particularly to production of highly filled adhesive plastisols used in making protective coatings in motor-car construction, as anticorrosion protection of inner surfaces of metal structures. The method of producing highly filled plastisol based on polyvinyl chloride involves successive addition and mixture in a mixer of di(2-ethylhexyl)phthalate, triethylene glycol dimethacrylate, isopropylbenzene hydroperoxide, half of the given amount of kaolin, calcium strearate, polyvinyl chloride and the remaining amount of kaolin. Hexafunctional oligourethane acrylate, diatomite and NGZ-4 phosphate hydraulic fluid are added before adding polyvinyl chloride, and after adding the remaining amount of kaolin, a polysulphide oligomer - liquid thiocol II with weight ratio of SH groups of 1.7-2.6% and molecular weight of 2100 is added.

EFFECT: high degree of restoration of the thixotropic structure, extrusion, fire resistance and tensile strength of the polyvinyl chloride plastisol and the hardened material.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to processing polyvinyl chloride through dispersion, particularly to production of highly filled adhesive plastisols used in making protective coatings in motor-car construction, as anticorrosion protection of inner surfaces of metal structures. The method of producing highly filled plastisol based on polyvinyl chloride involves successive addition and mixture in a mixer of di(2-ethylhexyl)phthalate, isopropylbenzene hydroperoxide, half of the given amount of kaolin, calcium strearate, polyvinyl chloride and the remaining amount of kaolin. Hexafunctional oligourethane acrylate, diatomite and NGZ-4 phosphate hydraulic fluid are added before adding polyvinyl chloride, and after adding the remaining amount of kaolin, a polysulphide oligomer - liquid thiocol II with weight ratio of SH groups of 1.7-2.6% and molecular weight of 2100 is added.

EFFECT: high degree of restoration of the thixotropic structure, extrusion, fire resistance and tensile strength of the polyvinyl chloride plastisol and the hardened material.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention concerns method of obtaining polyurethanedi(met)acrylates applicable as binders for powder coatings applied on metal substrates, plastic parts, fiber-reinforced plastic parts. Polyurethanedi(met)acrylates are obtained by interaction of diisocyanate component, diol component and hydroxy-C2-C4-alkyl(met)acrylate at mol ratio of x:(x-1):2, where x takes any value from 2 to 5. 1,6-hexanediisocyanate comprises 50 to 80 mol % of diisocyanate component, and one or two diisocyanates selected out of defined diisocyanate group where mol content of respective diisocyanates amount to 100 mol % comprise(s) 20 to 50 mol %, so that each diisocyanate comprises at least 10 mol % of diisocyanate component. Diol component includes not more than four different diols, and at least one linear aliphatic alpha, omega-C2-C12-diol comprises 20 to 100 mol % of diol component, while at least one (cyclo)aliphatic diol different from linear aliphatic alpha, omega-C2-C12-diols comprises 0 to 80 mol %. Each diol of the diol component comprises at least 10 mol % of diol component, and mol content or respective diols amounts to 100 mol %. Due to the absence of solvent in polyurethanedi(met)acrylate production, further cleaning of end product is not required, thus increasing process product output.

EFFECT: higher acid resistance of coating films applied and solidified with the use of powder coatings containing claimed polyurethanedi(met)acrylates.

6 cl, 15 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: powdered coating agent contains solid particles of a resin-polyurathane binding substance with equivalent mass of olefinic double bonds ranging from 200 to 2000 and content of silicon bonded in alkoxy silane groups ranging from 1 to 10 mass % and a photoinitiator. In the method of obtaining a single layered or multilayered coating on substrates, in particular when obtaining multilayered coating for transportation equipment and their components (car body or car body components coating), at least one layer of this coating is deposited from a powdered coating agent. In that case, solidification of at least one layer of the above mentioned powdered coating is achieved through free-radical polymerisation of olefinic double bonds when irradiated with high energy radiation and through formation of siloxane atomic bridges under the effect of moisture.

EFFECT: obtaining a powdered coating, which is hard, has scratch resistance and good resistance to chemical effects.

8 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: aqueous composition for coatings has a rapid curing mechanism and allows cross-linking of poorly illuminated areas, the composition comprising (I) at least one polyisocyanate (A), (II) at least one polyurethane (B) containing from 0 to 0.53 mmole/g of active, according to Tserevitinov, hydrogen atoms and being a product of reaction of: (a) one or several polyisocyanates, (b1) one or more compounds with hydrophilising action having ion groups and/or groups transferable to ion groups, and/or non-ionic groups, (b2) one or more compounds capable of radical polymerisation and including unsaturated acrylate or methacrylate groups, (b3) if necessary, one or more polyols with an average molecular weight of 50-500 and a hydroxyl functionality more than or equal to 2 and less than or equal to 3, (b4) if necessary, one or more polyols with an average molecular weight of 500 to 13,000 g/mole and an average hydroxyl functionality of 1.5 to 2.5, and (b5) if necessary, one or more di- or polyamines, and (III) an initiator (C).

EFFECT: capable to cross-link poorly illuminated areas and to cause radical polymerisation.

8 cl, 15 ex, 8 tbl

FIELD: powder covers.

SUBSTANCE: invention relates to a powder cover composition and to a method for its preparing that forms cover with reduced luster after hardening. Composition comprises one or some cross-linked basic polymers: cross-linked polyester, cross-linked polyurethane, cross-linked acrylated polyether and their combinations, about from 5 to 60 wt.-%; cross-linked acrylic polymer with solidification point about from 40°C to 100°C, and about 0.1 to 10 wt.-% of one or some free-radical initiating agents. Additional reducing luster and improved smoothness can be obtained by addition spheroidal particles to the powder cover composition. Proposed compositions can be used for making covers on metallic backings, such as vehicle bodies and on nonmetallic backings, such as backings made of pressed wood materials with impregnation used for making table tops of different species.

EFFECT: improved and valuable properties of covers.

21 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: polyvinyl butyral, surfactant, plasticiser and water are fed into a screw extruder. The components are mixed in the first zone of the extruder to form a welding mass. The welding mass is moved to the second zone of the extruder. Water is added to the welding mass in the second zone and mixed, and water is injected to a zone with high pressure, temperature and shear.

EFFECT: disclosed method enables fast and cheap production of an emulsion of plasticised polyvinyl butyral.

12 cl, 8 dwg, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for extreme media used in agriculture, cosmetology and everyday life. The compositions contain a surfactant based on an organosilicon compound of the formula: MM', where M=R1R2R3SiO1/2; M'=R4R5R6SiO1/2; where R1 is selected from a group consisting of a branched monovalent hydrocarbon radical containing 3-6 carbon atoms, and R7, where R7 has the formula: R8R9R10SiR12, R8, R9 and R10 are each independently selected from monovalent hydrocarbon radicals containing 1-6 carbon atoms and monovalent aryl or alkylaryl hydrocarbon radicals containing 6-13 carbon atoms, and R12 is a divalent hydrocarbon radical containing 1-3 carbon atoms, R2 and R3 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R1, with R4 in form of alkyl polyalkylene oxide of general formula: R13(C2H4O)a(C3H6O)b(C4H8O)cR14, where R13 is a divalent straight or branched hydrocarbon radical, having the structure: -CH2-CH(R15)(R16)dO-, where R15 is H or methyl; R16 is a divalent alkyl radical with 1-6 carbon atoms, where the subscrip d is equal to 0 or 1; R14 is selected from a group consisting of H, monovalent hydrocarbon radicals with 1-6 carbon atoms and acetyl, where subscripts a, b and c are equal to zero or positive numbers and satisfy the following relationships: 2≤a+b+c ≤20 for a≥2, and R5 and R6 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R4. The compositions have hydrolysis resistance in a wide pH range.

EFFECT: invention increases hydrolytic stability of the compositions.

65 cl, 21 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for extreme media used in agriculture, cosmetology and everyday life. The surfactant compositions for extreme media contain organically modified hydrolysis-resistant disiloxane surfactants which are based on an organosilicon compound of formula: MM', where M = R1R2R3SiO1/2; M' = R4R5R6SiO1/2; where R1 is selected from a group consisting of a branched monovalent hydrocarbon radical containing 3-6 carbon atoms, and R7, where R7 has the formula: R8R9R10SiR12, R8, R9 and R10 are each independently selected from a group of monovalent hydrocarbon radical containing 1-6 carbon atom and monovalent aryl or alkylaryl hydrocarbon radical containing 6-13 carbon atoms, and R12 is a divalent hydrocarbon radical containing 1-3 carbon atoms, R2 and R3 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R1, with R4 in form of alkylpolyalkylene oxide of general formula: R13(C2H4O)a(C3H6O)b (C4H8O)cR14, where R13 is a divalent straight or branched hydrocarbon radical, having the structure: -CH2-CH(R15)(R16)dO-, where R15 is H or methyl; R16 is a divalent alkyl radical consisting of 1-6 carbon atoms, where the subscript d can be equal to 0 or 1; R14 is selected from a group consisting of H, monovalent hydrocarbon radicals consisting of 1-6 carbon atoms and acetyl, where subscripts a, b and c are equal to zero or positive numbers and satisfy the following relationships: 2≤a+b+c≤20 for a ≥2, and R5 and R6 are each independently selected from a group of monovalent hydrocarbon radicals containing 1-6 carbon atoms or R4. The compositions are resistant to hydrolysis in a wide pH range.

EFFECT: invention increases hydrolytic stability of the compositions.

65 cl, 21 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: prepolymer composition for making sealants and coatings contains polyurethane prepolymers with blocked terminal NCO groups in which 50-100% terminal NCO groups are blocked silane groups and the remaining terminal NCO groups are blocked alcohol groups, where said composition contains unreacted aromatic alcohol in amount of not more than 0-15 mol % in terms of content of terminal NCO groups in the prepolymer, where the aromatic alcohol is selected from a group comprising phenol, 3-methoxyphenol, 4-methoxyphenol, nonylphenol, meta-cresol, para-cresol, 4-chlorophenol, meta-hydroxybenzaldehyde, ortho-hydroxybenzaldehyde, para-hydroxybenzaldehyde, hydroquinone, 3-hydroxyacetophenone and 4-hydroxyacetophenone. The invention also relates to a sealant containing said prepolymer composition and a catalyst for increasing the rate of cross-linking prepolymers as part of said prepolymer composition in a moist atmosphere.

EFFECT: high resistance to weather, high temperature and UV radiation.

15 cl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a powder coating composition obtained from aqueous dispersion containing polymer-encapsulated particles, said particles including particles encapsulated in a brittle polymer which can easily break up under ambient conditions. The invention also discloses a method of preparing an aqueous dispersion of particles encapsulated in a brittle polymer, a base which is at least partially coated with a coating deposited from said composition, a multilayer composite coating, a method of preparing a powder coating composition, a method of preparing an aqueous dispersion of particles encapsulated in a brittle polymer and a powder coating composition formed from said dispersion prepared using said method, as well as a reflecting surface which is at least partially coated with a layer which gives the colour of an uncovered coating deposited from disclosed powder coating compositions.

EFFECT: obtaining aqueous dispersion of particles encapsulated in a brittle polymer in which repeated agglomeration of particles is minimised and which enables to obtain a powder coating composition which contains multiple polymer-encapsulated particles having maximum turbidity so that the coating has absorption or reflection in the visible spectrum which is close to that of the given coating.

22 cl, 14 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: disclosed is a colourless luminescent decorative paint containing a luminophor and binder. The luminophor is an organic luminophor with anomalously large Stokes shift which is greater than 100 nm, which is colourless in daylight and luminescent in the visible spectral region when illuminated with a source of UV radiation. The organic binder is a transparent organic substance which does not absorb long-wave ultraviolet radiation in the 365-420 nm range.

EFFECT: obtaining fast and stable luminescent paint which contains a colourless organic luminophor, which enables to create a latent image which appears upon illumination with UV radiation which is invisible in daylight as well as in the dark, in the absence of UV radiation, the paint ensures high strength of the polymer base of the decorative layer of the article obtained using said paint.

13 cl, 8 ex

FIELD: construction.

SUBSTANCE: anti-corrosion protective coating consists of the first element - a single-component moisture-hardened isocyanate primer, which contains at least 75 wt % of a nonvolatile residue and 6…8 wt % of isocyanate groups. The second element is a thick-layer external coating, to produce which a double-component polyurea-urethane mastic is used, containing an isocyanate prepolymer on the basis of diphenyl methane diisocyanate with mass portion of NCO-groups making 15…17% and dynamic viscosity at the temperature of (20±3)°C - 3…10 Pa·s, and the component it hardens with active atoms of hydrogen with hydroxyl number making 95…105 mgKOH/g, mass portion of total titrated nitrogen of 4.2…4.5%, containing a mixture of simple or complex polyester diol with molecular weight of 800…1000 c.u., sterically hindered diamine with amine number of 12…16.7%, oxypropylated ethylene diamine with hydroxyl number of 640…800 mgKOH/g and liposoluble organic pigments, at the ratio of isocyanate prepolymer to a component with active atoms of hydrogen, which ensures hardening of a thick-layer external coating until the required level of operational characteristics is produced.

EFFECT: coating ensures high level of adhesion, resistance to cathode lamination with preservation of the main physical-mechanical indices and ecological safety in process of insulation works.

3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to compositions based on silane-functional polymers, which are suitable for adhesive binding, sealing and coating porous substrates. The composition contains at least one silane-functional polymer, at least one organosilane and at least one organotitanate. The silane-functional polymer is a silane-functional polyurethane polymer or can be obtained through hydrosilylation of polymers, having terminal double bonds. The organosilane contains at least one sulphur atom. The organotitanate has ligands bound to a titanium atom through an oxygen-titanium bond. The ligands are selected from a group consisting of an alkoxy group, a sulphate group, a carboxylate group, a dialkylphosphate group and an acetylacetonate group. Content of the organotitanate in the composition is between 0.1 and 10 wt %. Content of the organosilane in the composition is between 0.1 and 7 wt %. The composition also contains at least one filler, content of which is between 10 and 70 wt %. The composition is used for binding, sealing and coating substrates made from concrete, mortar, brick, tiles, plaster, natural stone such as granite or marble, glass, glass-ceramic, metal or metal alloy, wood, plastic and lacquer.

EFFECT: obtained article, which is bound, sealed or coated using the composition, is a building structure, more specifically a building or civil construction structure; the composition guarantees efficient adhesion to a substrate even after storage in the presence of water.

17 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of preparing an aqueous agent for applying coating, as well as an aqueous agent obtained using said method, and use thereof as binder in single-component (1K)-systems and a two-component (2K)-system, and for obtaining a coating on soaking substrates. The method involves the following: (I) polyurethane dispersion which is free from solvent and N-methylpyrrolidone is prepared, where the solvent free dispersion is a dispersion containing 0.9 wt % or less solvent, and the polyurethane dispersion (I) is simultaneously or separately mixed with (II) 1-7 wt % monohydroxyl-functional ethylene- or propyleneglycol ester, as well as (III) other lacquer additives. Wherein I.1) at the first step a NCO-prepolymer solution is obtained in a solvent with concentration of 66-98 wt %, where the solvent has boiling point lower than 100°C at nominal pressure, by reacting: (a) one or more polyisocyanates, (b) one or more polyols with average molecular weight Mn 500-6000, (c) one or more polyols with average molecular weight Mn 62-500, (d) one or more compounds containing a ion group or capable of forming an ion group and the NCO-prepolymer is free from a non-ionic hydrophilisising agent; I.2) at the second step the NCO-prepolymer I.1) is dispersed in water, where before, during or after dispersion, ion groups are at least partially neutralised; I.3) at the third step the chain is elongated by (e) one or more polyamines with average molecular weight Mn less than 500; and l.4) at the fourth step, the solvent is completely removed by distillation.

EFFECT: obtaining an aqueous agent for applying a coating, having improved film-forming properties, as well as obtaining coatings therefrom, having good chemical resistance and pendulum hardness higher than 75 seconds.

13 cl, 5 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a polyurethane dispersing resin, primarily having a polyurethane chain which contains hydrophilic groups of the side chain based on polyalkylene oxide, where groups of the side chain are covalently bonded to the polyurethane backbone chain, and where content of polyalkylene oxide in the polyurethane dispersing resin is at least 45 wt % and not more than 80 wt %. Polyurethane also contains hydrophobic groups on the side chain, which are covalently bonded to the polyurethane backbone chain. The invention also describes a coating composition containing said polyurethane dispersing resin, methods of preparing said composition and use of the polyurethane dispersing resin to prepare a composition for mixing with a pigment.

EFFECT: providing a polyurethane dispersing resin which enables to prepare concentrates of pigments, which can be easily included in a coating composition, in which pigments are stably dispersed, as well as possibility of obtaining pigment compositions with a wide range of pigments and obtaining dyes having excellent properties and stability, especially hard-to-disperse and stabilised pigments.

24 cl, 16 ex, 4 tbl

FIELD: chemistry.

SUBSTANCE: radiation curable primary coating composition contains at least one urethane-(meth)acrylate functional oligomer and a photoinitiator, wherein the urethane-(meth)acrylate functional oligomer is a product of reaction of hydroxyethyl acrylate, a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, isophorone diisocyanate and polyether polyol in the presence of a catalyst and an inhibitor, where the urethane-(meth)acrylate functional oligomer contains (meth)acrylate groups, at least one polyol backbone chain and urethane groups, where 15% or more of the urethane groups are derivatives of one of 2,4- and 2,6-toluene diisocyanate or both, where at least 15% of the urethane groups are derivatives of isophorone diisocyanate, and where said urethane-(meth)acrylate functional oligomer has number-average molecular weight from at least 4000 g/mol to at least 15000 g/mol; and where the cured film of the radiation curable primary coating composition has equilibrium modulus of elasticity, measured as indicated in the description, which is equal to at least 1.2 MPa. The invention also relates to a method of coating glass optical fibre, involving (a) using a glass drawing column to obtain glass optical fibre, preferably at linear velocity between 750 m/min and 2100 m/min; (b) applying the radiation curable primary coating composition onto the surface of the optical fibre; and (c) optional exposure to radiation to cure said radiation curable primary coating composition. The cured primary coating composition on the optical fibre and conductor has the following properties after initial curing and after one month at 85°C and 85% relative humidity:A) % RAU from 84% to 99%; B) in-situ modulus of elasticity between 0.15 MPa and 0.60 MPa; and C) Tc of the tube -25°C to - 55°C.

EFFECT: improved coating characteristics.

13 cl, 2 tbl

Up!