Method and composition of primer for coating application onto non-polar base

FIELD: technological processes.

SUBSTANCE: method of coating application onto non-polar base includes stages of applying primer that contains one or more non-polar polymers polyolefins with silane functional groups onto non-polar base, and then applying one or more layers of pigmented coating above the primer layer. The primer contains resin based on alkyl aromatics and non-polar polyolefin, which contains silane groups.

EFFECT: primer demonstrates proper adhesion on non-polar bases without reduction of chemical resistance.

14 cl, 1 tbl, 5 ex

 

The invention relates to a method and primer for processing non-polar substrates. Non-polar substrates are substrates made of materials which does not allow for the free movement of electrons, such as a thermoplastic polyolefin substrate. The use of thermoplastic olefins, such as polypropylene, continues to expand, especially in the automotive industry, due to the low cost of such materials and their formemost and the ability to recycling. However, due to the very low surface tension such materials, the coating of such substrates require special technologies pre-treatment.

The level of technology

Commonly used technologies pre-treatment are, for example, processing by flame or corona discharge. These technologies have major disadvantages associated with security. Another pretreatment technology is the application of adhesion promoters, such as chlorinated polyolefins. Coatings based on chlorinated polyolefins, usually applied with a low content of solid products and are usually made conductive to facilitate electrostatic coating the following layers of the coating. However, chlorinated polyolefins are expensive and was found to have a neg is a negative effect on chemical resistance.

In addition, attempts have been made to use non-chlorinated polyolefins, but as for chlorinated polyolefins, these adhesion promoters lower chemical resistance. In addition, the adhesion with other film coatings applied to these primers, as found, is selective with respect to the upper floors.

The invention

The present invention is the creation of primers, demonstrating good adhesion on non-polar substrates, as well as additional layers of coatings applied to layers of primer, without reducing chemical resistance. Another objective of the present invention is a method of coating a non-polar substrate, resulting in good adhesion of the primer/substrate interface, as well as good adhesion between the primer and the additional coating on the primer.

Detailed description of the invention

The present invention is solved by the method of coating a non-polar substrate, comprising the stage primer containing one or more non-polar polymers with wilanowie functional groups on the substrate and applying a layer of pigmented coating over a layer of primer. Non-polar polymers are polymers having a main chain which basically do not contain the at ion or other polar groups, other than silane functional group. In this regard, "basically does not contain" means less than about 5 wt.% from the polymer, preferably less than about 1 wt.%.

Found that the method in accordance with the present invention results in excellent adhesion primer - substrate, also when applying the systems main cover/transparent cover with intensive or moderate drying. Suddenly primer not only demonstrate excellent adhesion on non-polar substrates, but also with additional layers of pigmented coatings applied to it, which, as a rule, are more polar in nature. Substrates with coatings deposited using the method according to the present invention, exhibit good chemical resistance, in particular resistance to gasoline, and good results when testing thermal shock and water jet. Primer, apparently, are particularly suitable for thermoplastic polyolefin substrates, such as polypropylene substrates modified with rubber.

Suitable for use modified wilanowie groups of polymers that can be used in variants of the implementation of primer in accordance with the present invention, are modified wilanowie groups polyolefins, the particular alpha-polyolefins, Homo - or copolymers of olefins, such as polyethylene, polypropylene, polybutylene, ethylene-propylene, ethylene-hexylen, ethylene-butylene-styrene complex ethylene-vinyl esters (for example, ethylene-vinyl acetate), esters of ethylene(meth)acrylic acid (for example, ethylene-acrylate, ethylene-methyl acrylate and ethylene-butyl acrylate). Particularly suitable example of a commercially available modified wilanowie groups polyolefin is a Vestoplast® 206, available from Degussa.

The polymer used in the primer can contain up to 20% Milanovich functional groups, for example, in the range between 0.1-10% or in the range between 0.5 to 6 wt.% from the polymer.

The primer typically contains one or more solvents to obtain the necessary viscosity. This can be used solvents such as aromatics (e.g. xylene and/or toluene) and aliphatic hydrocarbons, esters, ethers, alcohols, ketones, acetates, ethers, or their mixtures. Particularly suitable solvent is, for example, Aromatic® 100, commercially available from Exxon - Mobil, which is a mixture of aromatic hydrocarbons, which gives the best appearance of solution and having a lower content of hazardous air pollution than xylene or toluene. Suitable for using the Oia non-aromatic solvent is for example, VMP® Naphtha, available from Ashland Chemical Company. Can also be used mixtures of two or more of these solvents. For example, toluene, xylene and/or VMP® Naphtha can be used separately or in combination with Aromatic® 100, to achieve the desired drying characteristics and solubility. The content of the solid products may, for example, be in the range of from about 15 wt.% to about 35 wt.%, but optionally can be used to lower or higher content of solid products.

Under the action of moisture silane group is hydrolyzed, forming a silanol group. Then the polymer may the cross be crosslinked, for example, by condensation of silanol or through interaction of hydroxy-functional polymers. The condensation reaction of silanol can kataliziruetsa using catalyst condensation silanol, such as the carboxylates of metals such as dilaurate dibutylamine, ORGANOMETALLIC compounds, such as tetrabutyl titanate, organic bases such as ethylamine and mineral, and fatty acids. Other suitable catalysts are described in U.S. patent No. 3646155. The catalyst may optionally be used in an amount of 0.004-0.2 wt.%, for example, 0.01 to 0.1 wt.% the composition of the primer.

The primer composition may also contain additional is omponent, such as fillers or pigments. Suitable fillers are, for example, talc and calcium carbonate. Can be used organic or inorganic pigments, such as titanium dioxide. Can also be used conductive pigments, such as conductive carbon black.

The primer composition of the present invention may also contain other additives. Typical additives are, as a non-limiting example, dispersing agents, for example soy lecithin; reactive diluents; plasticizers; leveling agents, such as acrylate oligomers; protivovspenivayushchie agents, for example silicone oil; metal salts and organic acids, such as cobalt ethylhexanoate; chelating agents; agents for controlling the rheology, such as bentonites, peroozvanny silicon oxide, derivatives of hydrogenated castor oil and the products added di - or triisocyanate to monoamino; antioxidants, such as substituted phenols; and UV stabilizers, such as benzophenone, triazole, benzoate and employed piperidylamine.

Adding one or more resins based on alkyl aromatic hydrocarbons to the primer composition according to the observations significantly improves the stability of the primer when stored in the packaging and the ke. A commercially available example of a usable resin is a Nevchem® 140, available from Neville Chemical Company.

Primer is especially suitable for use on non-polar substrates, such as substrates of thermoplastic polyolefins, such as substrates made of polypropylene or polyethylene.

As is conventional, for example, in the automotive industry, the composition of the coating applied on the primer can be a primary coating, which, in turn, is applied as a clear coat. Optional, such systems main cover/transparent coatings can be applied by way of painting on wet layer. In this way, the primer should be applied to non-polar substrate is subjected to thermal drying, for example for about five minutes, and put the main floor. After heat drying of the layer of the primary coating, for example for about five minutes on the main floor put a clear coating. After this primer, the base coating and clear coating otverzhdajutsja together, for example, by sintering or UV curing, or any other suitable method of curing.

Instead of using the primary cover/transparent cover can be used, if required, with the system of single-layer coating. In the system of the single-layer coating only the pigmented coating is applied on the primer layer without the use of a transparent cover.

Main floor, single-layer coating and/or clear coating may constitute, for example, coatings of water or solvent. Basic coatings from solvent can be combined with transparent coatings of water, and any other means as desired.

Basic coating, clear coating, or a single-layer coating can be based on any suitable for use with the mechanism of cross-linking or curing. The coating can be a 1K or one-component system using blocked or latent agents for cross-linking. Alternatively, it may be 2K or multi-component coating, where the agents to cross-linkage, and reacting with them binders are stored separately and mixed immediately prior to application or during it.

Usable cross-linkage mechanism for systems basic coatings and clear coatings represents, for example, cross-linking of NCO-OH, as a rule, carried out using polyisocyanate agent for cross-linking and hydroxy-functional resin, or any other way is, optional.

Examples of usable polyisocyanates include 1,6-hexane diisocyanate, 1,6-hexamethylene diisocyanate, isophorone diisocyanate, tetramethylsilane, 2-methyl-1,5-pentane diisocyanate, 2,2,4-trimethyl-1,6-hexamethylene diisocyanate, 1,12-dodecane diisocyanate, methylene bis(4-cyclohexyl isocyanate) or bis(isocyanate cyclohexyl)methane and product additions, such as biuret or isocyanurate. Usable biuret represents, for example, biuret 1,6-hexamethylene diisocyanate, commercially available as Desmodur® N from Bayer. Examples of usable isocyanurates are isocyanurate 1,6-hexamethylene diisocyanate and isocyanurate isophorone diisocyanate, commercially available as Desmodur® N-3390 and Desmodur® Z-4370, respectively, both from Bayer. Typically, the ratio of NCO:OH is in the range of 0.5-3:1, for example 1-2:1.

To prevent premature cross-linking agents for cross-linking and co-reactive WLANs are packaged separately and mixed just before application or in the course of it (usually referred to as 2K or a two-component system). Alternatively, one of the functional groups responsible for cross stitching, may be blocked, thereby making it possible to take a mixture of all the components of the water package or container (1K or one-component system). Blocked component can be unlocked under the action of, for example, increasing the temperature, humidity, light and the like. Suitable for use blocking agents for isocyanates are, for example, ketoxime, esters of malonic acid or acetoacetate. Suitable for use monofunctional blocking agents are, for example, diethyl ether complexmalonic acid, ethylacetoacetate, ε-caprolactam, butanonoxime, cyclohexanone, 1,2,4-triazole, dimethyl-1,2,4-triazole, 3,5-dimethylpyrazole or imidazole. Preferably used blocking agents, which hatshepsuts in the temperature range up to 160°C, more preferably up to 150°C.

Isocyanate agents for cross-linking can be used not only in curing systems NCO/OH, but also in combination with the resin containing a functional group having active hydrogen atoms, such as politiely or polyamine.

Additional suitable for use agents for cross-linking, for hydroxy-functional compounds are, for example, agents for cross-linking based on melamine. Examples of suitable melamine are partially or completely alkylated condensates of melamine and formaldehyde, for example methyl is rowanne melamineformaldehyde resin. Specific examples are hexamethoxymelamine (for example, Cymel® 303), mixed epirotiki/butoxy methylmelamine (for example, Cymel® 1135), the highest aminopolymers methoxyethylamine (for example, Cymel® 325), all these products Cymel® are commercially available from Cytec Industries Inc.

The primer can be applied to the substrate in any usable way, for example by coating with a roller, spraying, brush application, application flow or immersion. The primer is usually applied with a layer thickness of dry film approximately 5-10 micrometers, for example 6-8 micrometers. The layer of the primary coating or layer single-layer coating, usually applied with a layer thickness of dry film 20-50 micrometers, for example 30-40 micrometers. If applied clear coating, the thickness of the layer of dry film as a rule, is approximately 40-50 micrometers.

Further the present invention is described and illustrated using the following examples. In the examples, all values of the concentrations are given in mass units, pbw, if not stated otherwise.

Example 1

Vestoplast® 206, a modified wilanowie groups polyolefin, available from Degussa, melted and dissolved in Aromatic® 100, with 20% solution. 100 pbw (mass parts) of this solution are mixed with 2.4 pbw of conductive carbon is soot and 0,93 pbw of talc, crushed in the horizontal kinetic dispersion mill to obtain a dispersion of the grinding, at least 4, according to the device Hagman. After that add 112 pbw of toluene and 1,91 pbw of 1% solution of dilaurate dibutylamine in Aromatic® 100.

The resulting primer composition is applied on a number of panels of thermoplastic material (reactor grade TPO, CA 186 AC from Basell), when the dry film thickness of about 5-10 μm. Then applied from solvent two-component urethane basic coating with a dry film thickness of about 38 μm. The main floor is based on hydroxy-functional complex polyester, cross crosslinked by isocyanate agent for cross-linking. The primer and the base coat is subjected to heat drying for 5 minutes at room temperature. Then applied two-component urethane clear coating based on hydroxy-functional acrylic resin and isocyanate agent for cross-linking. After 10 minutes of heat-drying the entire system baked at 80°C for 30 minutes.

Example 2

Example 1 is repeated, but for the other system main cover/transparent coating. The main floor is a one-component composition is applied from a solvent-based polyol complex polyester and agent for cross-linking on the basis of the chalk is on. Transparent coating is a one-component composition is applied from a solvent-based polyol polyurethane and agent for cross-linking based on melamine. After the application of the system as a whole is baked at a temperature of 120°C for 30 minutes.

The panel examined for compliance with the descriptions of General Motors using the test methods specified in the table.

TestTest methodThe test results for examples 1 and 2
240-hour adhesion in wet conditionsGM 4465 P, GM 9071 PAdhesion is saved
Thermal shockGM 9525 PAdhesion is saved
Water jetGM 9531 PAdhesion is saved
5 pints of gravel for refrigerator, 45°SAE J 400Satisfies the descriptions OEM
Immersion in gasolineGM 9501 p, method BWithstands a 30-minute dive time

Comparative example A

Vestoplast® 708, asianromance grade, melt and dissolve in Aromatic® 100 with a 20% solution. For each of these grades receive a primer composition similar to that prepared in example is e 1, except the content of 1% solution of dilaurate dibutylamine in Aromatic® 100. The resulting primer composition is applied on a number of panels of thermoplastic material (reactor grade TPO, CA 186 AC from Basell) at a dry film thickness of about 5-10 μm. After this main floor/transparent coating is applied and baked as described in example 1.

When tested for adhesion according to test method GM, GM9071P, it is observed that the adhesion of the primary coating on the primer layer does not occur.

Comparative example B

Comparative example a is repeated, using Vestoplast® 828 instead of Vestoplast® 708. Vestoplast® 828 is a polyolefin without Milanovich functional groups. The results of the test are the same as in comparative example A.

Comparative examples C and D

Examples 1 and 2 is repeated using, in both cases, primers based on the chlorinated polyolefin, commercially available as HP 21054-4B1, Rohm and Haas. The results of tests similar to those for examples 1 and 2.

Example 3

Vestoplast® 206 melted and dissolved in Aromatic® 100 with a 20% solution. 71,04 pbw of this solution are mixed with 4.3 pbw Aromatic® 150, 3,72 pbw Aromatic® 100 and 25 pbw VMP Naphtha. Then added to the mixture 0,69 pbw of 1% solution of dilaurate dibutylamine in Aromatic® 100.

The resulting composition is transparent primer sprayed over molded the th color (MIC) substrate TPO (Sequel 1140 YBTA) at a dry film thickness of about 5-10 μm. The primer is subjected to heat drying for 5 minutes at room temperature.

Then two-component urethane primary coating from a solvent, is applied at the dry film thickness of about 38 μm. The main floor is based on hydroxy-functional complex polyester, cross crosslinked by isocyanate agent for cross-linking. The main floor is subjected to heat drying for 5 minutes at room temperature. Then applied two-component urethane clear coating based on hydroxy-functional acrylic resin and isocyanate agent for cross-linking. After 10 minutes of thermal drying system as a whole baked at 80°C for 30 minutes.

Panel test in accordance with test procedure General Motor GM4465P and GM9071P for 240 hours, adhesion in wet conditions. The test results meet the criteria for procedures about the no loss of adhesion or formation of bubbles upon contact with moisture.

Repetition of the experiment using substrates of TPO extrusion quality (Sequel E3000 and Indure 1500 HG) gives the same results.

Example 4

Transparent primer prepared as in example 3, and applied to the molded colored (MIC) substrate TPO (Sequel 1140 YBTA) at a dry film thickness of about 5-10 μm. Soil is the heat drying for 5 minutes at room temperature.

One-component main floor-based polyol complex polyester and agent for cross-linking on the basis of melamine applied on the primed substrate. Then put one-component clear coating of solvent-based polyol polyurethane and agent for cross-linking based on melamine. After the application of the system as a whole is baked at a temperature of 120°C for 30 minutes.

Carry out the same tests as in example 3. There is no loss of adhesion or formation of bubbles. Repetition of the experiment using TPO substrates extrusion quality (Sequel E3000 and Indure 1500 HG) gives the same results.

Example 5

Vestoplast® 206 melted and dissolved in Aromatic® 100 with a 20% solution. 35,63 pbw of this solution are mixed with 3,63 pbw Aromatic® 100, 1,66 pbw conductive carbon and 0.65 pbw of precipitated barium sulfate (Blanc Fixe). This mixture is ground in a horizontal kinetic dispersion mill to obtain a dispersion of grinding at least 4 according to the device Hagman.

Then add to 4.2 pbw Aromatic® 150, pbw of 19.91 20% solution Vestoplast 206, 19,80 pbw VMP Naphtha, of 8.47 Aromatic® 100 and 0.55 pbw of 1% solution of dilaurate dibutylamine in Aromatic® 100. To this mixture add 5,49 pbw 20% solution of the resin based on alkyl aromatic hydrocarbon (Nevchem® 140, available from Neville Chemical Company) vexille. The addition of this resin according to the observations significantly improves the stability of the primer when stored in the packaging.

The resulting primer composition is applied on a number of panels of thermoplastic material (reactor grade TPO, CA 186 AC, Basell), when the dry film thickness of about 5-10 μm. Then, as in example 1, two-component urethane primary coating from a solvent, is applied at the dry film thickness of about 38 μm. The main floor is based on hydroxy-functional complex polyester, cross crosslinked by isocyanate agent for cross-linking. The primer and the base coat is subjected to heat drying for 5 minutes at room temperature. Then applied two-component urethane clear coating based on hydroxy-functional acrylic resin and isocyanate agent for cross-linking. After 10 minutes of heat-drying the entire system baked at 80°C for 30 minutes. The panel feel the same way as in example 1. The test results are similar (see table 1).

1. Method of coating a non-polar substrate, which includes stages primer containing one or more non-polar polymers of polyolefins with wilanowie functional groups on the non-polar substrate, and then applying one or more of the Loew pigmented coating over a layer of primer.

2. The method according to claim 1, in which the composition of the coating, applied over primer, represents the main floor, and then one or more layers of clear coating is applied over the primary coating.

3. The method according to claim 2, in which the primary coating and a clear coating is applied by way of painting on wet layer and together utverjdayut at the next stage.

4. The primer composition containing a resin on the basis of alkylated aromatic hydrocarbons and non-polar polymer, in which the polyolefin contains a silane group.

5. The primer composition according to claim 4, in which the polyolefin is a polypropylene.

6. The primer composition according to claim 4, in which it contains one or more conductive pigments.

7. The primer composition according to claim 4, in which it contains a condensation catalyst silanol.

8. The primer composition according to claim 7, in which the condensation catalyst silanol is an organic compound of tin.

9. The primer composition of claim 8, such that the organic compound of tin is dilaurate dibutylamine.

10. The primer composition according to claim 4, in which the polymer contains up to 20 wt.% Milanovich functional groups, for example, in the range of 3-10%, for example about 5 wt.% from the polymer.

11. Non-polar substrate with a coating according to claim 1.

12. Nonpolar padlock is according to item 11, in which the substrate is a polyolefin substrate.

13. The nonpolar substrate according to item 12, in which the polyolefin substrate is a polypropylene substrate.

14. The nonpolar substrate according to item 13, in which the substrate is a polypropylene modified with rubber.



 

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1 ex

FIELD: agriculture.

SUBSTANCE: method for production of liquid complex fertiliser with application of nitrogen-, phosphorous- and potassium-containing components consists in the fact that carbonate or hydrocarbonate of potassium or ammonium and monosubstituted potassium or ammonium phosphate are combined at mole ratio equal to 1 : 0.8 - 2.2, accordingly, and is stirred into water directly prior to irrigation of plants. Method makes it possible to produce fertilizser, which increases speed of plant green material growth due to release of carbonic acid. Besides efficient substance is phosphate of ammonium - potassium, which is produced directly when stirred and more actively acts at metabolism of plants.

EFFECT: fertiliser is especially efficient for use in greenhouses.

1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in the production of potassium chloride. The method of controlling the process of sylvinite ores dissolution includes the regulation of ore supply depending on the content of a useful component in input flows, measurement of the temperature in the input flows, measurement of the temperature of the final solution, determination of sodium chloride by the calculation method, measurement of the density, temperature and dissolving solution consumption, determination of the sodium chloride content by the content of the useful component, density and temperature, calculation of ore supply. In the realisation of the process of sylvinite ore dissolution on two parallel lines with common ore with the total consumption of ore and correction of the ore consumption by the composition of the final solution, additionally measured are: content of potassium chloride and magnesium chloride in the final solution, consumption of ore per one of the lines and the total expenditure of the dissolving solution. Calculated values are supplied as a task into a system for control of a weight dosing device of ore of the general flow and the second line.

EFFECT: invention makes it possible to simplify the process due to the reduction of the number of apparatuses and the amount of control and management means.

2 tbl, 1 ex

FIELD: technological processes.

SUBSTANCE: method of coating application onto non-polar base includes stages of applying primer that contains one or more non-polar polymers polyolefins with silane functional groups onto non-polar base, and then applying one or more layers of pigmented coating above the primer layer. The primer contains resin based on alkyl aromatics and non-polar polyolefin, which contains silane groups.

EFFECT: primer demonstrates proper adhesion on non-polar bases without reduction of chemical resistance.

14 cl, 1 tbl, 5 ex

FIELD: process engineering.

SUBSTANCE: invention relates to coat and method of coating outer surfaces. Proposed method of coating pipeline outer surfaces by polymer capable of forming cross-links under action of water comprises the following stages: a) pipeline outer surface is coated by, at least, one polymer that forms cross-links under action of water. Note here that said polymer represents HDPE grafted by alkoxy silane. b) Polymer is cross linked on subjecting it to water at increased temperature to produce cross-linked polymer layer unless cross linking degree makes ≥30% to ≤80%. c) Polymer is cross linked that can form cross links under action of water at ≥50°C to ≤350°C, preferably at ≥150°C to ≤300°C, more preferably at ≥200°C to ≤260°C. Note here that during these stages, pipeline is heated to ≥170°C to ≤230°C, preferably to ≥180°C to ≤220°C, more preferably to ≥190°C to ≤210°C. Powder ionic spraying method is used epoxy resin layer is applied with thickness of ≥0.08 to ≤0.16 mm, preferably of ≥0.10 to ≤0.13 mm, more preferably, 0.125 mm. Method of envelopment extrusion is used to apply a layer of glue with thickness of ≥0.15 mm to ≤0.30 mm, preferable of ≥0.22 mm to ≤0.27 mm, more preferably of 0.25 mm. By method of extrusion, applied is upper layer of HDPE with thickness of ≥2.8 mm to ≤3.2 mm, preferably of ≥2.9 mm to ≤3.1 mm, more preferably of 3 mm. Extrusion is used to apply layer of HDPE cross linked by silane with thickness of ≥0.8 mm to ≤1.2 mm, preferably of ≥0.9 mm to ≤1.1 mm, more preferably of 1 mm. Now, pipeline is treated by water with temperature of ≥10°C to ≤40°C, preferably of ≥20°C to ≤30°C, more preferably of 25°C. Coat is made as described above. Invention covers also coated pipeline.

EFFECT: improved operating performances and expanded applications.

11 cl, 2 tbl, 3 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to water varnish composition for application of coverings on polymers. Varnish composition includes water basic varnish and water dispersion at least partially neutralised wax based on ethylene copolymer. Said wax is selected from the group, which includes waxes based on gradient or statistic ethylene copolymers, which contain units of comonomers: (A) from 12 to 40 wt % of ethylene-unsaturated carboxylic acid of formula (I), where R1 and R2 are hydrogen or alkyl with 1-10 carbon atoms, (B) from 60 to 88 wt % of ethylene units; or (A') from 5 to 50 wt % of units of formula (II) comonomer, where R1 and R2 are hydrogen or cycloalkyl with 3-12 carbon atoms, X is oxygen, A1 is alkylene with 1-10 carbon atoms or cycloalkylene with 4-10 carbon atoms, (B') from 50 to 95 wt % of ethylene units. Wax on ethylene copolymer base, which contains (A) and (B), has Mw from 10000 to 150000 g/mole; pH of its water dispersion is from 1 to 7. Content of water wax dispersion based on ethylene copolymer counted per water basic varnish is from 0.1 to 10 wt %.

EFFECT: claimed composition possesses increased adhesion to polymer bases.

5 cl, 1 dwg, 2 tbl, 3 ex

FIELD: optical engineering.

SUBSTANCE: invention, in particular, relates to UV solidifying composition based on urethane acrylates and containing 6.0-19.3 wt parts of hydroxyalkylacrylate and 1-5 wt parts of light initiator, said urethane acrylate base being mixture of 30.0-82.0 wt parts of interaction product of poly(oxypropylene glycol), 2,4-tolylenediisocyanate, hydroxypropyl acrylate, and 1,2-propylene glycol [molar ratio (1-2):(2-3):(2-2.1):(0.003-0.33)] with 4.7-60.0 wt parts of interaction product of 2,4-tolylenediisocyanate, hydroxypropyl acrylate, and 1,2-propylene glycol [molar ratio 1:(2.5:(0.004-0.065)]. Fiber light guide consisting of quartz optical fiber enrobed by above-defined composition is further described. Loss of light in light guide is thus lowered to 0.42-0.23 dB/km. Rupture strength is thus increased by 7.0 GPa.

EFFECT: increased rupture strength and reduced light loss.

2 cl, 1 tbl, 8 ex

Resin composition // 2247087

FIELD: building industry, in particular polymer composition for sealing adhesives.

SUBSTANCE: claimed composition contains polyisocyanate oligomer comprising 1.9-8.9 mass % of isocyanate groups, water, polymethylsiloxane, dioctylphtalate, chloroparaffin, glycerol, and inorganic powder. Composition of present invention is useful in manufacturing of floor, roof cladding, etc.

EFFECT: composition if increased flexibility, strength, uniform surface flowing, improved wettability, adhesion, homogeneity, radiation resistance, and increased curing time.

4 ex

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