D1365 bj radiation-curable primary coating for optical fibre

FIELD: chemistry.

SUBSTANCE: radiation-curable primary coating composition for optical fibre or wire contains A) an oligomer; B) a first diluent monomer; C) a second diluent monomer; D) a third diluent monomer; E) a first light stabiliser; F) a first photoinitiator; G) a second photoinitiator; H) an antioxidant; I) a second light stabiliser; J) an adhesion promoter; where said oligomer is a product of reaction of: i) hydroxyl-containing (meth)acrylate; ii) isocyanate; iii) polyether polyol; iv) a polymerisation inhibitor; v) a catalyst; vi) a diluent; where said oligomer has number-average molecular weight ranging from at least 4000 g/mol to less than or equal to 15000 g/mol; and where said catalyst is selected from a group consisting of copper naphthenate; cobalt naphthenate; zinc naphthenate; triethylamine; triethylene diamine; 2-methyl triethylene amine; dibutyl tin dilaurate, metal carboxylates, sulphonic acids, catalysts based on amines or organic bases, zirconium and titanium alcoholates, and ionic liquid salts of phosphonium, imidazolium and pyridinium, and where the hardened film of said radiation-curable primary coating composition has peak value tan δ Tc, measured as indicated in the description, ranging from 25°C to -55°C and modulus of elasticity from 0.85 MPa to 1.10 MPa.

EFFECT: improved production and operational characteristics of primary coatings.

5 cl

 

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This patent application claims priority based on provisional application for U.S. patent No. 60/874731 "radiation-Curable primary coating BJ for optical fiber", filed December 14, 2006.

The technical FIELD TO WHICH the INVENTION RELATES.

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

The LEVEL of TECHNOLOGY

[0003] Optical fibers typically cover two or more radiation-curable coatings. These coatings are usually applied on the optical fiber in liquid form, and then subjected to irradiation to cause solidification. The type of radiation that can be used for curing coatings, must be that which is capable of initiating the polymerization of one or more radiation-curable components such coatings. Radiation suitable for curing such coatings are well known and include ultraviolet light ("UV") and electron beam ("E"). The preferred type of radiation for curing coatings applied when obtaining covered optical fiber is UV radiation.

[0004] Coated the eve ENT, which is in direct contact with the optical fiber, called primary coating, 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 advantage resulting from this composition represents an increased resistance to microshell.

[0005] Microengine are sharp, but microscopic curvature in an optical fiber, implying 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. When they are present, microengine impede the ability of the coated optical fiber to transmit the signal. Weakening is an undesirable decrease of the signal transmitted on the optical fiber. Relatively soft primary coating provides resistance optical fiber to microshell, thereby minimizing signal attenuation. Relatively more rigid secondary coating provides resistance to stresses resulting from handling of the fiber, such as encountered when pokrytiya connect to tape the tires and/or cables.

[0006] the Previously described radiation-curable coating suitable for use as a primary coating for optical fibers, include the following:

[0007] Published patent application China No. CN 16515331 "Radiation Solidification Paint and Its Application", assigned to the firm Shanghai Feikai Photoelectric, inventors: Jibing Lin and Jinshan Zhang, describes and claims radiation-curable coating comprising the oligomer, an active diluent, photoinitiator, thermo stabilizer, selective adhesion promoter, in which the content of the oligomer is between 20% and 70% (by weight, hereinafter the same), the content of other components is between 30% and 80%; the oligomer chosen from (meth)acelerando polyurethane oligomer or a mixture of (meth)acelerando polyurethane oligomer and a (meth)acelerando epoxy oligomer; mentioned (meth)atilirovanie polyurethane oligomer is obtained using at least the following substances:

[0008] (1) one of the polyols selected from polyurethane polyol, polyamide polyol, simple polyetherpolyols, complex polyetherpolyols, polycarbonate polyol, hydrocarbon polyol, polysiloxane polyol, a mixture of two or more identical or different types of polyol(s);

[0009] (2) a mixture of two or more diisocyanates or polyisocyanates;

[0010] (3) (meth)giliran the th connections, containing one hydroxyl, capable to react with isocyanate.

[0011] Example 3 in published patent application China No. CN 16515331 is the only example in this published application, which describes the synthesis of radiation-curable coating suitable for use as radiation-curable primary coating. Floor, synthesized in Example 3, has a modulus of elasticity of 1.6 MPa.

[0012] the Article "UV-CURABLE POLYURETHANE-ACRYLIC COMPOSITION as a SOLID OUTER LAYERS two-layer PROTECTIVE COATINGS FOR OPTICAL FIBERS" ("UV-CURED POLYURETHANE-ACRYLIC COMPOSITIONS AS HARD EXTERNAL LAYERS OF TWO-LAYER PROTECTIVE COATINGS FOR OPTICAL FIBRES"), the authors W.Podkoscielny and .Tarasiuk, journal Polim.Tworz.Wielk, volume 41, No. 7/8, pp. 448-455, 1996, NDN-131-0123-9398-2, describes an optimization study of the synthesis of UV-curable urethane-acrylic oligomers and their use as hard protective coatings for optical fibers. For the synthesis used made in Poland oligotherapy, diethylene glycol, colorvision (Izocyn T-80) and isophorondiisocyanate in addition to hydroxyethyl - and hydroxypropylmethacrylate. Active diluents (butyl acrylate, 2-ethyl hexyl acrylate and 1,4-batangyagit or mixtures thereof) and 2,2-dimethoxy-2-phenylacetophenone as photoinitiator was added to the urethane-acrylic oligomer, which had a polymer of the struc-active double bond. The composition was irradiated with UV light in an oxygen-free atmosphere. I recorded the IR spectra of these compositions was determined by some physical, chemical and mechanical properties before and after curing (density, molecular weight, viscosity as a function of temperature, the refractive index, the content of the gel, the glass transition temperature, shore hardness, young's modulus, tensile strength, elongation at break, heat resistance and the diffusion coefficient of water vapor).

[0013] the Article "properties of UV-CURABLE POLYURETHANE-ACRYLATES" ("PROPERTIES OF ULTRAVIOLET CURABLE POLYURETHANE-ACRYLATES"), the authors M.Koshiba; K.K.S.Hwang; S.K.Foley; D.J.Yarusso and S.L.Cooper; published in the journal J.Mat.Sci, vol. 17, No. 5, may 1982, str-1458; NDN - 131-0063-1179-2; describes the investigation of the relationship between the chemical structure and physical properties of the hardened UV polyurethane-acrylate-based isophorondiisocyanate and colordistance (TDI). These two systems were obtained with variations of the molecular weight of the soft segment and the content of the crosslinking agent. The results of dynamic mechanical tests showed that it was possible to get one - or two-phase materials, depending on the molecular weight of the soft segment. Increases past the glass transition temperature (Tc) polyol shifted to lower temperatures. Increased when the change or N-vinylpyrrolidone (NVP), or diacrylate of polyethylene glycol (PEGDA) caused increase in the young's modulus and ultimate tensile strength. The stitching with the use of NVP increased impact strength in two-phase materials and moved the high temperature peak of the Tcto higher temperatures, and PEGDA were not given such effects. Mechanical properties tensile two systems were similar.

[0014] US-B-6630242 describes radiation-curable composition for coating optical fibers. Example 11 this document describes how to obtain inner primary coating (also known as the primary coating from the coating composition, which contains only two of the diluent and the polyether oligomer-aromatic urethaneacrylate, containing 21% of isobutylacetate and 2% of laurelcrest. This document says nothing about the molecular weight of the oligomer.

[0015] Typically, in the production of radiation curable coatings for use on optical fiber in order to obtain urethane oligomers using isocyanates. In many sources, including U.S. patent No. 7135229 "radiation-CURABLE COATING COMPOSITION", issued November 14, 2006, assigned to the patentee DSM IP Assets B.V., in column 7, line 10-32 provided the following information as a guide for professionals on the synthesis of the urethane oligomer is: "the Polyisocyanates, suitable for use in preparation of the compositions of the present invention can be aliphatic, cycloaliphatic or aromatic and include diisocyanates, such as 2,4-colorvision, 2,6-colorvision, 1,3-xylylenediisocyanate, 1,4-xylylenediisocyanate, 1,5-naphthalenedisulfonate, meta-delete the entry, para-delete the entry, 3,3'-dimethyl-4,4'-diphenylmethanediisocyanate, 4,4'-diphenylmethanediisocyanate, 3,3'-dimethylphenylsilane, 4,4'-biphenylenediisocyanate, 1,6-hexadienal, isophorondiisocyanate, Methylenebis(4-cyclohexyl)isocyanate, 2,2,4-trimethylhexamethylenediamine, bis(2-isocyanatomethyl)fumarate, 6-isopropyl-1,3-phenyldiazonium, 4-diphenylmethanediisocyanate, liaindizecign, hydrogenated diphenylmethanediisocyanate, hydrogenated xylylenediisocyanate, tetramethylethylenediamine and 2,5(or 6)-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane. Among these diisocyanates are particularly preferred 2,4-colorvision, isophorondiisocyanate, xylylenediisocyanate and Methylenebis(4-cyclohexyl)isocyanate. These diisocyanate compounds are used either individually or in combination of two or more."

[0016] Although the currently available number of primary coatings, it is desirable to provide new primary coatings that have superior technological and/or operational characteristics of p is compared with existing coatings.

The INVENTION

[0017] the First aspect of the claimed invention now is a radiation-curable primary coating composition containing:

A) oligomer;

B) a first monomer-diluent;

C) a second monomer-diluent;

D) a third monomer-diluent;

E) a first light;

F) the first photoinitiator;

G) a second photoinitiator;

H) an antioxidant;

I) a second light and

(J) an adhesion promoter;

moreover, the above-mentioned oligomer is a reaction product of:

(i) hydroxyl-containing (meth)acrylate;

ii) isocyanate;

iii) simple polyetherpolyols;

iv) inhibitor of polymerization;

v) catalyst and

vi) a diluent;

these oligomer has srednecenovogo molecular weight of at least 4000 g/mol to less than or equal to 15000 g/mol; and

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

when this cured film mentioned radiation-curable composition perving the coating has a peak value of tan δ T cmeasured, as indicated in the description, from -25°C to -55°C, and the modulus of elasticity of from 0.85 MPa up to 1.10 MPa.

[0018] the Second aspect of the claimed now of the invention is a method of coating an optical fiber, including:

a) operation of the column extraction of glass to obtain a glass optical fiber; and

b) coating the aforementioned glass optical fiber radiation-curable primary coating composition according to the first aspect of the claimed invention now.

[0019] the Third aspect of the claimed now of the invention is a method of coating an optical fiber, including:

a) operation of the column extraction of glass with a linear speed between 750 meters/minute and 2100 meters/minute to obtain a glass optical fiber; and

b) coating the aforementioned glass optical fiber radiation-curable primary coating composition according to the first aspect of the claimed invention now.

[0020] a Fourth aspect of the claimed invention now is a wire covered with the first and second layer, 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 coated is in contact with the outer surface of the primary coating,

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

A) A % RAU of from 84% to 99%;

B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and

C) Tctube from -25°C to -55°C;

this curable primary coating represents the above-mentioned radiation-curable composition of the primary coating.

[0021] a Further aspect of the present invention is an optical fiber coated with the first and second layer, the first layer is utverjdenie radiation-curable primary coating for now declared the invention, which is in contact with the outer surface of the optical fiber and the second layer is utverjdenie radiation curable secondary coating in contact with the outer surface of the primary coating,

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

A) A % RAU of from 84% to 99%;

B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and

C) Tctube from -25°C to -55°C.

A DETAILED DESCRIPTION of the PREFERRED embodiments

[0022] throughout this application for PA is UNT following abbreviations have the indicated meanings:

A-189γ-mercaptopropionylglycine manufactured by the General Electric
EIT2,6-di-tert-butyl-para-cresol, manufactured by Fitz Chem
CASindicates the registration number of refereed journal Chemical Abstracts
Chivacure 1841-hydroxycyclohexane manufactured by Chitech
Chivacure TPO2,4,6-trimethylbenzenesulfonamide manufactured by Chitech
NOPEhydroxyethylacrylate, produced by BASF
Irganox 1035thiodiethyl-bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate), manufactured by Ciba
Lowilite 202-hydroxy-4-methoxybenzophenone, manufactured by Great Lakes Chemical
P2010polypropyleneglycol (MW 2000), produced by BASF
SR 349 BPAEDAdiacrylate ethoxylated bisphenol a, manufactured by Sartomer company
SR395isodecyladipate, manufactured by Sartomer company
SR 504 Dthe acrylate of ethoxylated Nonylphenol, manufactured by Sartomer company
IPDIisophorondiisocyanate produced by Bayer
TDIa mixture of 2,4 - and 2,6-isomers colordistance in relation to 80/20, produced by BASF
TDS100%2,4-isomer colordistance produced by Bayer
Tinuvin 123N-substituted spatial hindered amine, manufactured by Ciba

[0023] One aspect of the present invention is a radiation-curable composition of the primary coating, including:

A) oligomer;

B) a first monomer-diluent;

C) a second monomer-diluent;

D) a third monomer-diluent;

E) a first light;

F) the first photoinitiator;

G) a second photoinitiator;

H)an antioxidant;

I) a second light and

(J) an adhesion promoter;

moreover, the above-mentioned oligomer is a reaction product of:

(i) hydroxyl-containing (meth)acrylate;

ii) isocyanate;

iii) simple polyetherpolyols;

iv) ing the inhibitors of polymerization;

v) catalyst and

vi) a diluent;

these oligomer has srednecenovogo molecular weight of at least 4000 g/mol to less than or equal to 15000 g/mol; and

these catalyst selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine; triethylenediamine; 2-methyldiethylamine; dilaurate dibutylamine; carboxylates of metals, including but not limited to those: vismutorganicheskikh catalysts, such as neodecanoic bismuth; neodecanoate zinc; neodecanoate zirconium; 2-ethylhexanoate zinc; sulfonic acids, including but not limited to such, dodecylbenzenesulfonic acid, methanesulfonate acid; catalysts based on amines or organic bases, including but not limited to those of: 1,2-dimethylimidazole and diazabicyclo; triphenylphosphine; zirconium alcoholate and titanium, including, but not limited to those, zirconium butyl and butyl titanium; and ionic liquid phosphonium salts, imidazole and pyridinium, such as chloride, tetradecyl(trihexy)phosphonium; and

when this cured film mentioned radiation-curable primary coating composition has a peak tan δ Tcfrom -25°C to -55°C and the modulus of elasticity of from 0.85 MPa up to 1.10 MPa.

[0024] the Oligomer truly is obreteniyu is a urethane(meth)acrylate oligomer, includes (meth)acrylate group, urethane group and the main chain. The term "(meth)acrylate" includes acrylate and methacrylate functional groups. The main chain is preferably derived from applied polyol which is reacted with a diisocyanate and a hydroxyl-containing (meth)acrylate, more preferably hydroxyethylacrylate.

[0025] Preferably, the oligomer obtained by reaction of hydroxyl-containing acrylate (for example, NEA); isocyanate (for example, an aromatic isocyanate, TDI or TDS); simple polyetherpolyols (for example. Acclaim 4200); inhibitor (e.g., BHT); catalyst (for example, DBTDL) and the reactive monomer-diluent (for example, SR 395).

[0026] the hydroxyl-containing (meth)acrylate component, applicable upon receipt of the oligomer may be of any suitable type, but preferably is hydroxyalkyl(meth)acrylate, such as hydroxyethylacrylate (NEA), or acrylate selected from the group consisting of monoacrylate of polypropylenglycol (for example, RRA), monoacrylate tripropyleneglycol (TPGMA), acrylates of caprolactone and triacrylate pentaerythritol (e.g., SR-444). Preferred NEA.

[0027] Upon receipt of the acrylate oligomer component may be added to the oligomer reaction mixture in any suitable amount, preferably from 0.2 wt.% up to 25 wt.%, above is consequently 0.6 wt.% up to 10 wt.%, and preferably from 1 wt.% up to 5 wt.%, all calculated on the weight of the oligomeric mixture of the reactants.

[0028] the Isocyanate may be of any suitable type, for example aromatic or aliphatic, but preferably includes 2,4-colorvision and, optionally, 2,6-colorvision. Preferably, at least 90 wt.%, more preferably at least 95 wt.%, and most preferably at least 99 wt.% isocyanate are 100%2,4-isomer colordistance (TDS).

[0029] Upon receipt of the isocyanate oligomer component may be added to the oligomer reaction mixture in the amount of 0.4 wt.% to 9.6 wt.%, preferably from 1.2 wt.% to 8.8 wt.%, and preferably from 2 to 8 wt.%, all based on the mass percentage of oligomeric mixture.

[0030] To obtain the oligomer can be used many simple polyether polyols. There are no particular restrictions on the method of polymerization of the structural units in these polyols; apply any statistical polymerization, block polymerization or graft polymerization.

[0031] the Molecular weight of simple polyether polyols for use in preparation of the oligomer may be 1000 or higher, preferably 1500 or higher, and still more preferably 2000 or higher. Preferably, the molecular weight (MW) can be 8000 or lower, and more preferably 6000 or below.

0032] Examples of suitable simple polyether polyols and hydroxyl-containing (meth)acrylates are disclosed in WO 00/18696. Preferably use polypropyleneglycol (MW=4200) (e.g. Acclaim 4200, manufactured by Bayer).

[0033] Upon receipt of the oligomer component simple polyetherpolyols can be added to the oligomer reaction mixture in any suitable amount, preferably of 44 wt.% up to 90 wt.%, more preferably from 50 wt.% to 84 wt.%, and preferably from 55 to 75 wt.%, all based on the mass percentage of oligomeric mixture.

[0034] In the reaction composition used to obtain the oligomer, is also present reactive monomer (also referred to as a diluent). In the art there are many different diluents that can be used to obtain oligomer, including, without limitation, acrylate alkoxysilanes alkyl substituted phenol, such as acrylate of ethoxylated Nonylphenol (ENPA, such as Photomer 4066, manufactured by Cognis), acrylate propoxyethanol of Nonylphenol (PNPA), vinyl monomers, such as vinylcaprolactam (nVC), isodecyladipate (IDA, for example SR 395, manufactured by Sartomer), 2-ethyl hexyl acrylate (S), diethylene glycol hexyl acrylate (DEGEHA), isobutylacetate (IBOA), diacrylate tripropyleneglycol (TPGDA), diacrylate of hexandiol (HDDA), triacrylate of trimethylolpropane (TMRCA), triacrylate alkoxysilanes of trimethylolpropane and diacrylate alkoxysilane what about bisphenol a, such as diacrylate ethoxylated bisphenol A (EO-BPADA). Preferably, the diluent used isodecyladipate (for example, SR 395, manufactured by Sartomer company).

Upon receipt of the oligomer component of the monomer-diluent may be added to the oligomer reaction mixture in any suitable amount, preferably from 4 wt.% to 8.4 wt.%, more preferably from 4.5 wt.% up to 7.7 wt.%, and more preferably from 5 to 7 wt.%, all calculated on the weight of the oligomeric mixture of the reactants.

In the reaction, which gives oligomer, using a catalyst, such as catalyst oreanization. Catalysts in the synthesis of oligomers based urethanes for use in radiation-curable coatings for optical fibers known in the prior art. Suitable catalysts may be selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine; triethylenediamine; 2-methyldiethylamine; dilaurate dibutyrate (DBTDL); carboxylates of metals, including but not limited to those: 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 such, dodecylbenzenesulfonic acid, CAS 27176-87-0; and methansulfonate acid, CAS 75-75-2; catalysts based on amines or organic bases, including but not limited to those of: 1,2-dimethylimidazole, CAS 1739-84-0 (very weak base); and diazabicyclo[2.2.2]octane (DABCO), CAS 280-57-9 (strong base); and triphenylphosphine (TPP); the alcoholate of zirconium and titanium, including, but not limited to such, butyl zirconium (tetramethylsilane), CAS 1071-76-7; and butyl titanium (tetrabutyltin)CAS 5593-70-4; and ionic liquid phosphonium salts, imidazole and pyridinium, such as, but not limited to those, 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 chloride, tetradecyl(trihexy)of phosphonium, commercially available under the trade name Cyphosil 101.

[0035] the Preferred catalyst is DBTDL.

[0036] the Catalyst may be used in a free, soluble and homogeneous state, or may be associated with inert agents such as silica gel, or macrostate resins with divinely cross and applied in heterogeneous able to be filtered by the completion of the synthesis of the oligomer.

[0037] Upon receipt of the oligomer component of the catalyst may be added to the oligomer reaction mixture in any suitable amount, preferably from being 0.036 wt.% to 0,072 wt.%, and preferably about is 0.03 to 0.06 wt.%.

[0038] obtaining the oligomer is carried out in the presence of a polymerization inhibitor, which is used to suppress the polymerization of the acrylate in the reaction time. In the art there are many inhibitors that can be applied upon receipt of the oligomer, including, without limitation, bottled hydroxytoluene (BHT), hydroquinone and derivatives thereof, such as methyl simple ether of hydroquinone and 2,5-dibutylamino, 3,5-di-tert-butyl-4-hydroxytoluene; methyl-di-tert-butylphenol; 2,6-di-tert-butyl-para-cresol and the like. The preferred polymerization inhibitor is EIT.

[0039] Upon receipt of the inhibitory oligomer component may be added to the oligomer reaction mixture in any suitable amount, preferably from 0.04 wt.% to 0.24 wt.%, more preferably from 0,045 wt.% to 0.22 wt.%, and preferably from 0.05 to 0.20 wt.%.

[0040] obtaining the oligomer may be performed in any suitable way, but preferably occurs in the synthesis of the outside-inside (outside-in), in which the isocyanate component is reacted with acrylate, and after that formed the reaction product interacts with the polyol. More specifically and preferably, some of the isocyanate, the inhibitor and catalyst oreanization thoroughly mix, then add acrylate (for example, NEA) in a controlled manner so that the temperature value of the reaction does not exceed 40°C. After adding the rest of the acrylate component and polyol reaction allowed to proceed to completion.

[0041] In General, the reaction of formation of oligomer is carried out at a temperature from 10°C to 90°C, and preferably from 30°to 80°C.

[0042] the Oligomer contained in the radiation-curable primary coating composition according to the claimed invention now has srednecenovogo molecular weight of at least 4000 g/mol. The option of carrying out now of the invention is an oligomer, which has srednecenovogo molecular weight of at least 5000 g/mol. The option of carrying out now of the invention is an oligomer, which has srednecenovogo molecular weight of at least 6000 g/mol.

[0043] the Oligomer contained in the radiation-curable primary coating composition according to the claimed invention now has srednecenovogo molecular weight less than or equal to 15000 g/mol. The option of carrying out now of the invention is an oligomer, which has srednecenovogo molecular weight less than or equal to 10000 g/mol. The option of carrying out now of the invention is an oligomer, which has srednecenovogo molecular weight less than or equal to 9000 g/mol.

[0044] After receiving the oligomer can be prepared response is edema radiation composition. The amount of oligomer in the curable composition may vary depending on the desired properties, but will preferably be from a 59.2 wt.% to 88.8 wt.%, and preferably 74 wt.%, in the calculation of the mass percentage of the radiation-curable composition.

[0045] To the curable composition add first, second and third reactive monomer diluent. As mentioned earlier, such diluents are well known in the art. Preferably, the diluents include a combination of SR 504 D, SR 349 and SR 395, preferably in approximately equal proportions. When using thinner SR 504D is present in an amount of 8 wt.% up to 12 wt.%; SR 349 is present in an amount of from 3 to 7 wt.% and SR 395 is present in an amount of from 4 to 8 wt.%, all calculated on the weight of curable composition.

[0046] the Curable composition also includes first and second light stabilizers. Such light stabilizers are well known in the art. Light stabilizers can be included in the composition in amounts comprising from 0.01 wt.% up to 2 wt.% from the curable composition. Preferably, the first light may be present in amounts of from 0.2 to 0.6 wt.%, and the second light may be present in amounts of from 0.05 to 0.25 wt.%. Preferably, the first stabilizer is a Tinuvin 123, while the second Stabi who isator preferably represents Lowilite 20.

[0047] the Curable composition also includes first and second photoinitiator. Such components are well known in the art. Photoinitiator can be included in the composition in amounts comprising from 1 wt.% up to 8 wt.% from the curable composition. Preferably, the first photoinitiator is present in an amount of from 0.5 to 3 wt.%, and the second photoinitiator is present in an amount of from 0.5 to 3 wt.%. Preferably, the first photoinitiator is a Chivacure TPO, while the second photoinitiator preferably represents Chivacure 184.

[0048] Another component used in the curable composition is an antioxidant. Such components are well known in the art. A component of the antioxidant may be included in the composition in amounts comprising from 0.5 to 3 wt.%, and more preferably up to 1.5 wt.% from the curable composition. Preferably, the antioxidant is a Irganox 1035.

[0049] Another component included in the curable composition is an adhesion promoter, which means his name, enhances the adhesion of the cured coating to the optical fiber. Such components are well known in the art. The adhesion promoter may be included in the composition in amounts comprising from 0.2 wt.% up to 2 wt.% from the curable composition and, such as from 0.5 wt.% up to 2 wt.%, preferably from 0.8 to 1.0 wt.% from the curable composition. Preferably, the adhesion promoter is an A-189.

[0050] In a preferred aspect of the present invention, the oligomer can be obtained from the following components:

hydroxyl-containing acrylate (for example, NEA): from 1 to 5 wt.%;

isocyanate (e.g., TDS): from 2 to 8 wt.%;

simple polyetherpolyols (for example, Acclaim 4200): from 55 to 75 wt.%;

inhibitor of polymerization (e.g., BHT): from 0.05 to 0.20 wt.%;

the catalyst (for example, DBTDL): from 0.030 to to 0.060 wt.%;

the diluent (e.g., SR 395): from 5 to 7 wt.%.

[0051] exemplary compounds should be checked for accuracy and to ensure that the total amount of all components equals 100%.

[0052] Examples of the present invention can be represented as follows:

Oligomer primary coatingwt.%wt.%wt.%
Example 1Example 2Example 3
Hydroxyl-containing acrylate (NEA)1,841,841,84
Isocyanate (TDS) 4,144,144,14
Acclaim 420062,1162,1162,11
EIT0,0610,0610,061
DBTDL0,0340,0340,034
SR 395of 5.81of 5.81of 5.81
Curing radiation, the composition coatingwt.%wt.%wt.%
Oligomer primary coating747576
The monomer-diluent (SR 504D)approximately 10.4 wt.%10,410,4
The monomer-diluent (SR 349)about 5.0 wt.%5,05,0
The monomer-diluent (SR 395)about 6.0 wt.%6,0 6,0
First photoinitiator (Chivacure TPO)0,300,300,30
The second photoinitiator (Chivacure 184)1,001,001,00
Antioxidant (Irganox 1035)0,750,750,75
First light (Tinuvin 123)0,40,40,4
The second light (Lowilite 20)0,150,150,15
The adhesion promoter (A-189)1,02,03,0

(these percentages are selected and adjusted as necessary to achieve a total amount of 100 wt.% composition).

[0053] the Primary coating according to the claimed invention now designated as primary coverage BJ.

[0054] After receiving the primary coating it can be applied directly to the surface of the optical fiber. The stretching is carried out with the use of either "wet on dry"or "LR is mportant to wet". Mode "wet on dry" means that the liquid primary coating is applied wet, and then produce radiation for curing the liquid primary coating to a hard layer on the wire. After curing the primary coating is applied to the secondary coating and then also utverjdayut. Mode "wet on wet" means that the liquid primary coating is applied wet, then the secondary coating is applied wet, and then utverjdayut both coverages, primary and secondary.

[0055] the Preferred radiation used to promote curing is ultraviolet radiation.

[0056] If the secondary coating is transparent and not colored, it may be covered with a layer of paint covering. If the second floor is painted, the layer of the coating of paint is usually not applied on the secondary floor. Regardless of whether applied paint coat, common practice is to place multiple covered with fibers parallel to each other in the team ribbon (bus), application of a radiation-curable matrix coatings for fixation of many fibers in his place in this team the tape.

[0057] the Following examples further illustrate the invention.

EXAMPLES

[0058] test Method tensile strength tensile, elongation and modulus of elasticity: Mechanical properties tensile (n is published by third parties tensile strength, the percentage elongation at break and modulus of elasticity) of solidified samples radiation-curable primary 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 values of ultimate tensile strength, percentage elongation at break and hewer or segment of the modulus of elasticity. Samples are prepared for testing by curing the film material with a thickness of 75 μm using a UV processor Fusion. Samples utverjdayut at 1.0 j/cm2in nitrogen atmosphere. From the film cut out test pieces having a width of 1.27 cm (0.5 inch) and a length of 12.7 cm (5 inches). The exact thickness of each sample is measured with a micrometer. For relatively soft coatings (for example, with modulus less than 10 MPa) floor and pull utverjdayut on a glass plate, and the individual samples are cut with a glass plate with a scalpel. In the Instron device using 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 plot of strain from the strain. Before testing solidified film is conditioned at a temperature of 23±1°C and relative humidity is 50±5% for 16 to 24 hours.

[0059] For relatively more solid film coating pull on the tape, Mylar and cut samples of 1.27-Santorum (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 testing solidified film is conditioned at a temperature of 23±1°C and relative humidity of 50±5% for sixteen hours. For specimens tested working length is 5.1 cm (2 inches), and the speed of the RAM is 2.54 cm/min (1.00 inch/min). All testing is carried out at a temperature of 23±1°C and relative humidity of 50±5%. All measurements determined as the average of at least 6 test samples.

[0060] the Method of testing DMA: Dynamic mechanical analysis (DMA) is performed on the test samples with the use of the device RSA-II manufactured by Rheometric Scientific Inc. Free sample film (typically with a length of about 36 mm, a width of 12 mm and a thickness of 0.075 mm) is placed in the clamps of the device, and the temperature is initially adjusted to 80°C and maintained at this level for about five minutes. During the last period of exposure at 80°C the sample stretch approximately 2.5% of its original length. Also during this period, the identification information about the sample,its size and specific test methods is introduced into a computer program (RSI Orchestrator), installed on a connected personal computer.

[0061] All tests are performed at a frequency of 1.0 rad/s dynamic method step change of temperature with steps of 2°C, dwell time from 5 to 10 seconds, the initial deformation of about 0,001 (AL/L) and activated options autonation and avtodetali. Autonation set to ensure that the sample remains under the action of tensile forces throughout the test cycle, and autodermal set in order to allow deformation as the sample passes through the glass transition and becomes softer. After a five-minute exposure temperature in a heating Cabinet for sample reduced by steps of 20°C to achieve the initial temperature, typically -80°C or -60°C. the Final temperature of the test cycle is introduced into a computer program before starting the test cycle so that the data about the sample ranged from the region of the vitreous state through the transition region and deep into the area of high elasticity.

[0062] Test cycle start and allow you to proceed to completion. Upon completion of the test cycle on the computer screen displayed a graph of temperature dependence of several parameters: E' = storage modulus tensile E" = module is other tensile and tangent Delta (tan δ). Experimental points on each curve smoothed using a computer program. 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 tan δ curve contains more than one peak, measure the temperature of each peak. One additional value that is obtained from the graph represents the minimum value of E' in the field of high elasticity. This value is recorded as the equilibrium modulus of elasticity E0.

[0063] the test Method for measuring adhesion in dry and wet conditions:

Determination of adhesion in dry and wet conditions is performed by using a universal measuring device Instron model 4201. On a polished glass plate for thin-layer chromatography (TLC) cause a film thickness of 75 microns and utverjdayut using a UV processor Fusion. Samples utverjdayut at 1.0 j/cm2in nitrogen atmosphere. The sample is conditioned at a temperature of 23±1°C and relative humidity of 50±5% within a period of 7 days. After conditioning cut off with a scalpel eight samples with a length of 15.2 cm (6 inches) and a width of 2.54 cm (1 inch) in the direction of extrusion. Four of these samples apply a thin layer of talc. First of 2.54 cm (the first inch) of each sample prepare the chin from the glass. The glass is fixed in a horizontal holder on the Instron instrument with fixation of the end of the sample next to the pulley attached to the holder and located directly below the slider. To the end of the debonded sample attach the wire, pass it along the sample and then transferred through the pulley in the direction perpendicular to the sample. The free end of the wire is clamped in the upper jaw of the Instron instrument, which then lead to action. The test continued until until the average force in grams-force/2.54 cm (grams-force per inch) will be relatively constant. The speed of the RAM is 25.4 cm/min (10 in/min). The importance of adhesion in the dry state is averaged for the four samples. The other four sample is then conditioned at a temperature of 23±1°C and relative humidity of 95±5% for 24 hours. On the sample surface a thin layer of slurry of polyethylene in water. Then conduct the same test as in the previous paragraph. The importance of adhesion in the wet state is averaged for the four samples.

[0064] the Method of testing sensitivity to water: Utverjdayut layer composition to obtain test strips UV-cured coating with dimensions of 3.8 cm × 3.8 cm × 15-mm (1.5 inch × 1.5 inch and 0.6 mil). The test strip is weighed and placed in a bottle containing demineralize annoy water, which is then stored for 3 weeks at 23°C. at periodic intervals, such as 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 weighed again. The percentage of water absorption register as 100×(weight after immersion - weight before immersion)/(weight before immersion). The peak absorption of water represents the largest value of water absorption, achieved during a 3-week period of immersion. At the end of 3-week period of the test strip is dried in an oven at 60°C for 1 hour, cooled in a desiccator for 15 minutes and re-weighed. The percentage of recoverable water components is recorded as 100×(weight before immersion - weight after drying)/(weight before immersion). Sensitivity to water are classified as |peak absorption of water|+|recoverable water components|. To improve the accuracy of the tests have three test strips.

[0065] 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 what icroscope at 23°C and using light with a wavelength of 589 nm.

[0066] test Method viscosity: Viscosity is measured using a Physica viscometer MS. The test samples are examined and, if there is an excessive amount of bubbles, take measures to remove most of the bubbles. At this stage it is not necessary to remove all the bubbles, since the loading of the sample introduces some amount of bubbles. The device is set up on the ordinary system of Z3, which is used. Samples are loaded into a disposable aluminum cups using a syringe for measuring 17 cm3. The sample in the beaker test, and if it contains an excessive amount of bubbles, remove them by a direct method, such as centrifugation, or leave for a time sufficient to allow the bubbles to leave the volume of liquid. The presence of bubbles on the upper surface of the liquid is acceptable. Carefully immerse the pendulum in the liquid in the measuring Cup, and a glass pendulum is placed in the device. The sample temperature to give balanced with the temperature of the circulating fluid, after waiting for five minutes. Then adjust the speed to the desired value, which gives the desired shear rate. The desired shear rate is easily determined by the average expert in the field of technology on the expected viscosity range about is Azza. Typical shear rate of 50 sec-1or 100 sec-1. Read the indication of the viscosity on the instrument panel, and if the viscosity varies only slightly (less than 2% relative deviation) for 15 seconds, complete the measurement. If not, then it is possible that the temperature has not reached the equilibrium state, or that the material has undergone a change due to the shift. In the latter case you will need further testing at different shear rates to determine the rheological properties of the sample. The results are average values of viscosity for the three test samples. Results expressed or centipoise (SP), or in millipascal·seconds (MPa·s).

[0067] Prepare and test two batches of the compositions of the claimed invention now.

Example 1Example 2
Viscosity, MPa·s, 25°C58505600
Ultimate tensile strength, MPa0,850,66
Elongation, %179151
The module will focus the spine, MPa0,980,96
E' at 1000 MPa (°C)-58,9-59,0
E' at 100 MPa (°C)-50,8-50,4

[0068] For BJ primary coating cured film mentioned radiation-curable primary coating composition has a peak tan δ Tcfrom -25°C to -55°C. One variant of implementation of the mentioned radiation-curable primary coating composition has a peak tan δ Tcfrom -35°C to -55°C. Another variant implementation of the mentioned radiation-curable primary coating composition has a peak tan δ Tcfrom -40°C to -55°C.

[0069] For BJ primary coating cured film mentioned radiation-curable composition of the primary coating has a modulus of elasticity of from 0.85 MPa up to 1.10 MPa. One variant of implementation of the mentioned radiation-curable composition of the primary coating has a modulus of elasticity of from 0.90 to 1.00 MPa MPa.

EXAMPLES of SIMULATOR EXHAUST COLUMNS

Simulator extraction columns, test methods and examples

Test methods

Test method for percent reacted acrylate unsaturation for the primary coating, abbreviated oboznacheniya % RAU primary coverage:

[0070] the Degree of cure on the inner primary coating on an optical fiber or a metal wire is determined using infrared spectroscopy with Fourier transform (FTIR) using a diamond ATR accessory. 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 signal-to-noise ratio. Requires two spectra: one for the uncured liquid coating, which corresponds to the coating on the fiber or wire, and one for the inner primary coating on the fiber or wire. In the Central area of 2.54-cm (1-inch) square piece size Mylar film thickness of 76 microns (3 mil) smear a thin film of contact glue. After contact adhesive to become tacky, he placed a piece of optical fiber or wire. The sample is placed under a low-power optical microscope. The coating on the fiber or wire to cut glass with a sharp scalpel. Then cover the cut longitudinally to the upper side of the fiber or wire approximately 1 inch, making sure that the cut was clean and to the outer coating was not bent on the primary floor. Then cover waverace is up on contact adhesive so that the primary floor next to the glass or wire disclosed as a flat film. Glass fiber or a wire break in the area where disclosed primary coverage.

[0071] the Range of liquid coatings are produced after the entire surface of the diamond is completely occupied by the coating. The liquid should be from the same batch, which is used for coating the fiber or wire, but the minimum requirement is that it should have the same composition. The final format of the spectrum must be on the uptake. Open primary coating on the Mylar film is placed in the center of the diamond with the axis of the fiber or wire parallel to the direction of the infrared beam. The back side of the sample should press down to ensure good contact with the crystal. The spectrum should not contain any peaks of absorption from contact glue. If there are absorption peaks contact adhesive, it is necessary to prepare a fresh sample. It is important to remove the range immediately after preparation of the sample, and not to cook any of numerous samples and remove spectra after all samples will be ready. 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 of the region 750-780 cm -1. The peak area determined using the method of the 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 area acrylate peak to the area of control of the peak is defined as liquid, and for the cured sample. The degree of cure, expressed as a percentage reacted acrylate unsaturation (% RAU), calculated by the following equation:

where RLrepresents the ratio of the area of the liquid sample, a RFrepresents the ratio of the area of the cured primary coating.

[0074] the Method of testing in-situ modulus primary coating: This test method to measure in-situ modulus of the primary coating having a two-layer coating (soft primary coating and a hard secondary coating) glass fiber or metal wire. A detailed discussion of this test can be found in the work of authors Steeman, P.A.M., Slot, J.J.M., Melick, N.G.H. van, Ven, A.A.F. van de, Cao, H., and Johnson, R. (2003), Mechanical analysis of the in-situ Primary Coating modulus test for optical fibers. Proceedings 52ndInternational Wire and Cable Symposium (IWCS, Philadelphia, USA, 10-13 but the ber, 2003), article 41. To prepare the sample remove the coating layer short length (~2 mm) using a trim tool at a distance of ~2 cm from the end of the fiber. The fiber is cut so as to form the other end on the exact distance of 8 mm from the edge of the removed cover to the end of the fiber. Part 8-mm coated fiber is then inserted into a metal clamping device for sample, as schematically shown in Figure 6 in the paper [1]. Coated fiber is inserted into the microtubules in the mounting bracket; microtubules consists of two semi-cylindrical recesses; its diameter is dimensioned approximately the same as the outer diameter (-245 µm) standard fiber. Fiber tightly clamp after tightening the screw, the clamping force on the surface of the secondary coating is uniform and the coating layer does not occur significant deformation. Clamping device with the fiber is then installed on the device DMA (Dynamic mechanical analysis): Rheometric Solids Analyser (RSA-II). Metal clamping device is clamped by the lower clamp. Tighten the top clamp, pressing on the upper portion of the covered fibers against such a force, to destroy the coating layer. Clamping device and the fiber must be strictly vertical. You should ensure that newscalenda part of the fiber had a constant length is for each sample: in our tests 6 mm Regulate the deformation displacement, by setting the axial pretensioning almost zero (-1 g ~ 1 g).

[0075] To measure the shear modulus G of the primary coating selected geometric layout of the two-sided test on the shift. The width of the sample, W, in two-sided test shift introduced is equal to 0.24 mm, calculated according to the following equation:

where Rfand Rprepresent the outer radius of the bare fiber and the primary coating, respectively. The calculations are based on the geometry of standard fiber Rf=62.5 μm and Rp=92,5 μm. In geometry, two-sided test shift enter the length of the sample 8 mm (inserted length) and a thickness of 0.03 mm (the thickness of the primary coating). Testing was performed at room temperature (~23°C). Used frequency test is 1.0 radian/second. The shear deformation ε set at 0.05. Produce dynamic time base, having 4 experimental point for the measured storage modulus shear G. Given G value represents average value for all experimental points.

[0076] The measured shear modulus G is then further corrected according to the correction method described in the article [1]. Correction needed to account for the stretching of the glass in the inserted and nastavlenii parts. In a CR is the correction procedures require you to enter a modulus of tensile elasticity bare fiber (E f). For glass fibers Ef=70 GPA. For the wire fibers, which used stainless steel wire S314, Ef=120 GPA. The adjusted value G next Ousterhout using the real values of Rfand Rp. For the glass fibers of the fiber geometry, including the values of Rfand Rpmeasure using RC Fiber Geometry System. For the wire fibers Rfis 65 µm for used wire stainless steel S314 diameter of 130 μm; Rpmeasured under a microscope. Finally, in-situ modulus of elasticity E ' (storage modulus tensile) for the primary coating on the fiber is calculated according to the equation E=3G. Given the value of E is the average of three test samples.

[0077] test Method for in-situ measurements Tcthe primary and secondary coatings: This method measure the glass transition temperature (Tc) the primary and secondary coatings on glass fiber or metal wire dies (wire) with double-layer coating. These glass transition temperature is indicated as "Tctube".

[0078] To prepare samples with fiber peeling off layers of coating a length of ~2 cm in the form of a solid tube cover with one end covered with fiber, first immersing the end of the coated fibers together with the edging tools in liquid nitrogen for at measures is 10 seconds, and then a quick movement removing the receiver cover, while the coatings are still hard.

[0079] the Device DMA (Dynamic mechanical analysis): use the device Rheometrics Solids Analyzer (RSA-II). In the case of the device RSA-II gap between the two clamps RSA-II can be extended up to a maximum of 1 mm, the Gap initially set to the minimum level by adjusting the deformation displacement. A simple sample holder, made of metal plate, bent and pinched at the open end of the screw, is used for thorough fixation of the sample tube covering the bottom end. Shift the clamping device in the center of the lower clamp and tighten the clamp. Use tweezers to straighten the tube cover to the vertical position through the top clamp. Close and tighten the top clamp. Closed heat chamber and adjusting the temperature to a value higher than Twithsecondary coverage, or 100°C, using liquid nitrogen as a medium for temperature control. When the temperature of the heating Cabinet has reached this temperature, regulate the deformation displacement up until the pre-tensioning will not be in the range from 0 g to 0.3 g

[0080] 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; step changes the temperature is 2°C, and the exposure time is 10 seconds. The geometry type choose cylindrical. Set geometry parameters were the same as used for testing in-situ modulus of the secondary coating. The sample length equal to the length of the tube cover between the top edge of the metal clamping device and the lower clamp in the trial of 11 mm Diameter (D) is equal to 0.16 mm according to the following equation:

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

[0081] the Dynamic test at step temperature change is carried out from the initial temperature (100°C in our test) to a temperature below Tcprimary coverage or -80°C. After the test cycle peaks on the curve tangent Delta (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 the coating on the fiber due to the shift of the tan δ of the rather complex structure of the tube cover.

Examples of simulator exhaust columns

[0082] a Variety of compositions declared now the primary coating and a commercially available radiation curable secondary coating applied to the wire using a simulator exhaust column. The wire is passed in five different linear velocity: 750 m/min, 1200 m/min to 1500 m/min, 1800 meters/minute and 2100 meters/minute.

[0083] the Stretching is carried out with the use of either "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 curing the primary coating is applied to the secondary coating and then also utverjdayut. Mode "wet on wet" means that the liquid primary coating is applied wet, then the secondary coating is applied wet, and then utverjdayut both coverages, primary and secondary.

[0084] Conduct multiple test cycles with different compositions declared now the primary coating and a commercially available radiation curable secondary coating. Utverjdenie primary coating on the fiber have initial % RAU, the initial in-situ modulus and the initial Twithof the tube. The covered wire is then subjected to aging for odnokimnata at a temperature of 85°C and 85%relative humidity. Utverjdenie primary coating on the wire is then subjected to aging for one month and experience the % RAU, in-situ modulus and Twithtube in aged condition.

[0085] the tuning of the exhaust simulator columns:

- Use the die Sadly: 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 W/cm2(600 W/inch2) UV lamp D Fusion is used 100% for 1°'s coatings.

- (3) 93 W/cm2(600 W/inch2) UV lamp D Fusion is used 100% for 2°'s 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 1°th coating is 1 bar (0.1 MPa) at 25 m/min up to 3 bar (0.3 MPa) at 1000 m/min

- Pressure for 2°th coating is 1 bar (0.1 MPa) at 25 m/min and up to 4 bar (0.4 MPa) at 1000 m/min

[0086] Utverjdenie radiation-curable primary coating according to the claimed invention now found has the following properties:

Linear speed (m/min)%RAU primary coating (primary) % RAU primary cover (1 month)
75096-9992-96
120095-9992-95
150088-9392-96
180089-9389-93
210084-8888-92

Linear speed (m/min)in-situ modulus of the primary coating (MPa)in-situ modulus of the primary coating (MPa) (1 month)
7500,30-0,600.29 to 0.39
12000,25-0,350,25-0,35
15000,17-0,280,25-0,35
18000,15-0,250,20-0,30
21000,15-0,170,14-0,24

Linear speed (m/min)The values of Twithtube primary coating (°C) (initial)The values of Twithtube primary coating (°C) (1 month)
750from to -52 -47from -48 to -52
1200from -25 -51from -48 to -52
1500from -49 to -51from -46 to -50
1800from -47 to -51from -48 to -52
2100from -49 to -55from -48 to -52

[0087] Therefore, it is possible to describe and claim the wire covered with the first and second layer, the first layer is utverjdenie radiation-curable primary coating for now declared the invention, which is in contact with the outer surface of the wire, and the second layer is utverjdenie radiation curable secondary coating in contact with the outer surface of the primary coating,

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

A) A % RAU of from 84% to 99%;

B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and

C) Tctube from -25°C to -55°C.

[0088] using this information it is possible to describe and to declare an optical fiber covered with the first and second layer, the first layer is utverjdenie radiation-curable primary coating for now declared the invention, which is in contact with the outer surface of the optical fiber and the second layer is utverjdenie radiation curable secondary coating in contact with the outer surface of the primary coating,

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

A) A % RAU of from 84% to 99%;

B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and

C) Tctube from -25°C to -55°C.

[0089] the radiation Curable secondary coating may be any commercially available radiation curable secondary coating for optical fibers. Such commercially available radiation curable secondary coating are made by the company DSM Desotech Inc. and others, including, but without limitation, Hexion, Luvantix and PhiChem. As a secondary coating in the present invention can be used, for example, coating, described in document the Oh EP 2091883 B1, EP 2089334 A1, EP 2091884 Al, WO 2010/053532 (Specialty High Temperature Resistant Secondary Coating), US 6534557 and US 6306924.

[0090] 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" shall be construed as non-limiting terms (i.e. meaning "including, but not limited to,") unless otherwise stated. Specifying ranges of values here is only intended to serve as a quick way of individually specifying each separate value falling within the range, if it is not otherwise specified, and each separate value is incorporated into the description, as if it was individually listed here. All methods described here can be performed in any suitable order, here if not otherwise specified, or unless otherwise clearly contrary to the context. The use of any and all examples, or exemplary expressions (e.g., "such as")provided here are intended only to better illuminate the invention and does not limit the invention, unless stated otherwise. One expression in the description should not calculates is pointing to any undeclared element as essential to the practical implementation of the invention.

1. Curing radiation, the composition of the primary coating to the optical fiber or wire containing:
A) oligomer;
B) a first monomer-diluent;
C) a second monomer-diluent;
D) a third monomer-diluent;
E) a first light;
F) the first photoinitiator;
G) a second photoinitiator;
H) an antioxidant;
I) a second light; and
(J) an adhesion promoter;
moreover, the above-mentioned oligomer is a reaction product:
(i) hydroxyl-containing (meth)acrylate;
ii) isocyanate;
iii) simple polyetherpolyols;
iv) inhibitor of polymerization;
v) a catalyst; and
vi) a diluent;
these oligomer has srednecenovogo molecular weight of at least 4000 g/mol to less than or equal to 15000 g/mol; and
these catalyst selected from the group consisting of copper naphthenate, cobalt naphthenate, zinc naphthenate, triethylamine; triethylenediamine; 2-methyldiethylamine; dilaurate dibutylamine; carboxylates of metals; sulfonic acids; catalysts based on amines or organic bases; alcoholate of titanium and zirconium; and ionic liquid phosphonium salts, imidazole and pyridinium; and
when this cured film mentioned radiation-curable primary coating composition has a peak tan δ Tcmeasured as specified from -25°C to -55°C and the modulus of elasticity of from 0.85 MPa up to 1.10 MPa.

2. The method of coating an optical fiber, including:
a) operation of the column extraction of glass to obtain a glass optical fiber; and
b) coating the aforementioned glass optical fiber radiation-curable primary coating composition according to claim 1.

3. The method according to claim 2, including operation of the column extraction of glass with a linear speed between 750 m/min and 2100 m/min to obtain a glass optical fiber.

4. The wire is covered with the first and second layer, the first layer is utverjdenie radiation-curable primary coating according to claim 1, which is in contact with the outer surface of the wire, and the second layer is utverjdenie radiation curable secondary coating in contact with the outer surface of the primary coating
this utverjdenie primary coating on the wire has the following properties after initial cure and after one month aging at 85°C and 85%relative humidity:
A) A % RAU of from 84% to 99%;
B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and
C) Tctube from -25°C to -55°C.

5. The optical fiber coated with the first and second layer, the first layer is utverjdenie radiation-curable primary coating according to claim 1, which is in contact with the outer surface of optionscom the fiber, and the second layer is utverjdenie radiation curable secondary coating in contact with the outer surface of the primary coating
this utverjdenie primary coating on the optical fiber has the following properties after initial cure and after one month aging at 85°C and 85%relative humidity:
A) A % RAU of from 84% to 99%;
B) in-situ modulus of between 0.15 MPa and 0,60 MPa; and
C) Tctube from -25°C to -55°C.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: radiation curable secondary coating composition contains an Alpha-oligomer which does not contain urethane, obtained via reaction of (a) an acrylate compound selected from alcohol-containing acrylate or alcohol-containing methacrylate compound, (b) an anhydride compound, (c) an epoxide-containing compound, (d) an optional chain extender compound, and (e) an optional catalyst, where said composition additionally contains a Beta-oligomer, where said Beta-oligomer is different from said Alpha-oligomer, where said Beta-oligomer is obtained via reaction of (β1) hydroxyethyl acrylate; (β2) one or more diisocyanates; (β3) polyester polyol or polyether polyol with number-average molecular weight ranging from 300 g/mol to 10000 g/mol; and (β4) a catalyst. The secondary coating composition can additionally contain a Gamma-oligomer which is epoxy diacrylate. The invention also relates to a method coating an optical fibre involving 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. The invention also relates to a coated wire and a coated optical fibre. The radiation-curable secondary coating on the wire and optical fibre has the following properties after initial curing and after one month of ageing at 85°C and 85% relative humidity: A) % RAU from 80% to 98%; B) in-situ modulus of elasticity between 0.60 GPa and 1.90 GPa; and C) Tc of the tube from 50°C to 80°C.

EFFECT: improved coating properties.

8 cl, 5 tbl

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

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: 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: composition for sports coatings contains oligobutadiene diol, plasticiser, mineral filler, trifunctional low molecular weight alcohol, polymethylene-polyphenylene polyisocyanate containing 29.5-31.0% isocyanate groups, organotin catalyst, 2,4,6-tri-tertbutylphenol, polyfluorinated alcohol, copper diacetate-di-ε-caprolactamate.

EFFECT: improved dynamic, physical and mechanical properties and light-resistance of the coatings.

2 tbl

FIELD: chemistry.

SUBSTANCE: composition for sports coatings contains oligobutadiene diol, plasticiser, mineral filler, trifunctional low molecular weight alcohol, polymethylene-polyphenylene polyisocyanate containing 29.5-31.0% isocyanate groups, organotin catalyst, 2,4,6-tri-tertbutylphenol, copper diacetate-di-ε-caprolactamate and a modifier - prepolymer - oligodiene diol ether of ε-aminocaproic acid oligomer.

EFFECT: improved dynamic, physical and mechanical properties, resistance to thermal-oxidative and light ageing of the coatings.

2 tbl

Coating composition // 2434918

FIELD: chemistry.

SUBSTANCE: coating composition contains a base in form of hydroxyl-containing polybutadiene rubber with a microstructure, %: 1,4-trans 10-15 and 1,2-links 85-90, molecular weight 1250-3200 and content of hydroxyl groups 0.82-2.36%; isocyanate curing agent - polyisocyanate, urethane-formation catalyst. The composition can additionally contain a low molecular weight trifunctional alcohol.

EFFECT: high coating strength.

2 cl, 1 tbl

Coating composition // 2434917

FIELD: chemistry.

SUBSTANCE: coating composition contains a base in form of hydroxyl-containing polybutadiene rubber with a microstructure, %: 1,4-trans 10-15 and 1,2-links 85-90, molecular weight 1250-3200 and content of hydroxyl groups 0.82-2.36%; plasticiser, filler, antiageing agent, isocyanate curing agent - polyisocyanate, urethane-formation catalyst and additionally 3,5-dimethylthio-toluylne diamine or 3,5-diethylthio-toluylene diamine.

EFFECT: high level of strength properties - strength, hardness and relative elongation.

4 cl, 2 tbl

Coating composition // 2434916

FIELD: chemistry.

SUBSTANCE: coating composition contains a base in form of hydroxyl-containing polybutadiene rubber with a microstructure, %: 1,4-trans 10-15 and 1,2-links 85-90, molecular weight 1250-3200 and content of hydroxyl groups 0.82-2.36%; plasticiser 40-140, filler, antiageing agent, isocyanate curing agent - polyisocyanate, urethane-formation catalyst. The composition can additionally contain a low molecular weight trifunctional alcohol.

EFFECT: high strength of the coatings.

5 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

Coating composition // 2434909

FIELD: chemistry.

SUBSTANCE: coating composition contains oligobutadiene diol, mineral filler, trifunctional low molecular weight alcohol, polyisocyanate, urethane-formation catalyst and 2,4,6-tri-tertbutylphenol. The mineral filler additionally contains multifunctional filler which is a mixture of chemically co-deposited calcium carbonate and magnesium hydroxide.

EFFECT: obtaining coatings with improved dynamic and physical and mechanical properties.

2 tbl

Coating composition // 2433155

FIELD: chemistry.

SUBSTANCE: coating composition as a base contains hydroxyl-containing polybutadiene rubber with a microstructure, %: 1,-4-trans 10-15 and 1,2-links 85-90, molecular weight 1250-3200 and content of hydroxyl groups 0.82-2.36%, isocyanate curing agent, polyisocyanate, urethane-formation catalyst and an additional mixture of isomers of 3,5-dimethylthio-2,4- toluylenediamine and 3,5-dimethylthio-2,6-toluylenediamine in ratio of 75.5-81:18-20 or a mixture of 3,5-diethyl-2,4-toluylenediamine and 3,5-diethyl-2,6-toluylenediamine in ratio of 75.5-81:18-20.

EFFECT: high strength of the coating.

1 tbl

FIELD: chemistry.

SUBSTANCE: radiation curable secondary coating composition contains an Alpha-oligomer which does not contain urethane, obtained via reaction of (a) an acrylate compound selected from alcohol-containing acrylate or alcohol-containing methacrylate compound, (b) an anhydride compound, (c) an epoxide-containing compound, (d) an optional chain extender compound, and (e) an optional catalyst, where said composition additionally contains a Beta-oligomer, where said Beta-oligomer is different from said Alpha-oligomer, where said Beta-oligomer is obtained via reaction of (β1) hydroxyethyl acrylate; (β2) one or more diisocyanates; (β3) polyester polyol or polyether polyol with number-average molecular weight ranging from 300 g/mol to 10000 g/mol; and (β4) a catalyst. The secondary coating composition can additionally contain a Gamma-oligomer which is epoxy diacrylate. The invention also relates to a method coating an optical fibre involving 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. The invention also relates to a coated wire and a coated optical fibre. The radiation-curable secondary coating on the wire and optical fibre has the following properties after initial curing and after one month of ageing at 85°C and 85% relative humidity: A) % RAU from 80% to 98%; B) in-situ modulus of elasticity between 0.60 GPa and 1.90 GPa; and C) Tc of the tube from 50°C to 80°C.

EFFECT: improved coating properties.

8 cl, 5 tbl

Up!