Polymer composition

FIELD: chemistry.

SUBSTANCE: composition contains isocyanate hardener, urethane-formation catalyst, a rubber base and a mixture of 2,4 and 2,6-isomers of 3,5-dimethylthiotoluylene diamine. The rubber base contains low-molecular hydroxyl-containing rubber, a plasticiser, filler, an antiageing agent and a pigment. The isocynate hardener is a prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligodiene diol with molecular weight 2000-2200, content of hydroxyl groups of 1.2-1.9% with the ratio of isocyanate to hydroxl groups equal to 2:1 with content of isocyanate groups in the prepolymer equal to 4-5%.

EFFECT: obtaining coatings with high strength, hardness and elasticity.

6 cl, 2 dwg, 2 tbl

 

The invention relates to compositions for coatings based on liquid rubbers designed for covering sports grounds, floors, roofing and insulating materials in construction.

Known composition for coating comprising a low molecular weight hydroxyl-containing rubber is a copolymer of isoprene and butadiene, polyisocyanate, catalyst retinoblastoma. Additionally, the composition may contain a desiccant, a filler, a plasticizer, a low molecular weight alcohol, pigment, alkylphenolic antioxidant and rheological additive (patent RF 2268279, 09D 175/14, publ. 27.11.2006, bull. No. 2).

Known composition for coatings, including oligodontia copolymer of isoprene and butadiene, plasticizer, filler, trifunctionally low molecular weight alcohol, catalyst retinoblastoma, 2,4,6-tri-tertbutylphenol, the curing agent is a polyisocyanate, and optionally ethyl silicate (RF patent 2186812, C09D 109/00, publ. 10.08.2002).

The disadvantage of these compositions is the low strength of the solidified elastomeric coatings.

Known composition for coatings, including oligomerization, plasticizer, mineral filler, trifunctionally low molecular weight alcohol, catalyst retinoblastoma, 2,4,6-tri-tertbutylphenol, the polyisocyanate and ethyl silicate (RF patent 2190002, 09 D 175/08, publ. 27.09.2002).

<> The disadvantage of this composition is the low strength of the elastomeric coating.

The closest solution of the present invention (the prototype) is the composition (patent RF 2285026, C09D 175/14, publ. 10.10.2006, bull. No. 28), comprising isocyanate curing agent is a polyisocyanate, catalyst retinoblastoma and the basis of hydroxyl-containing polybutadiene rubber with a molecular weight of 2100 and content of hydroxyl groups of 1.2 to 1.9%, or molecular weight 3000-3200 and content of hydroxyl groups of from 0.88 to 1.36%, or molecular weight 5000-5300 and the content of hydroxyl groups of 0.6-0.8% in the ratio of components, parts by weight:

The specified hydroxyl-containing polybutadiene rubber100
Isocyanate curing agent is a polyisocyanate10-36
Catalyst retinoblastomaof 0.001 to 3.0

Additionally, the composition may contain:

The desiccant (calcium oxide, gypsum, cement)5-20
Filler (chalk, talc, lime-dropout, kaolin)50-250
The plasticizer20-100
Low molecular weight alcohol with not less than two
hydroxyl groups, or a component of the AF-21-8
Alkylphenolic antioxidant0,5-2,0
Pigment0.5 to 10.0
The rheology modifier surfactant0,5-5,0

Coatings of this composition are characterized by inadequate mechanical properties. This is due to the fact that the polyisocyanate curing agent based diphenylmethanediisocyanate insufficiently compatible with hydrocarbon butadiene rubber polymer based composition. By mixing rubber non-polar bases and polar aromatic MDI unable to obtain a homogeneous system. The polyisocyanate as the curing agent is not efficient enough, which reduces the degree of cure and leads to a lower level of strength properties of the coating.

The technical result is to increase the strength properties, especially the strength of the coating.

The technical result is achieved in that the composition for p the floor, including isocyanate hardener, catalyst retinoblastoma and rubber base made from low molecular weight hydroxyl-containing rubber, plasticizer, filler, antioxidant and pigment, as an isocyanate hardener contains a prepolymer obtained by the interaction of 4,4'-diphenylmethanediisocyanate and oligonucleotide with a molecular mass of 2000-2200, the content of hydroxyl groups of 1.2 to 1.9% when the ratio of isocyanate and hydroxyl groups is 2:1 with a content of isocyanate groups in the prepolymer 4,0-5,0% in the following ratio of components, rubber base, parts by weight:

Low molecular weight hydroxyl-containing rubber100
The plasticizer60-180
Filler100-500
Antioxidant1-2
Pigment1-10

and additionally mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine in the ratio of 80:20 in the following ratio of the components of the composition, parts by weight:

Rubber Foundation100
Specified isocyanate hardener26-45
A mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine1-2
Catalyst retinoblastomaof 0.01-0.1

The composition may contain rheological additive for improving wettability, dispersibility, which reduces the viscosity and improves the processing properties of the composition, such as surfactants, oleic or stearic acid, organosiloxane modifiers.

The technical result is an increase in strength is due to the fact that in contrast to the known composition the proposed composition contains as an isocyanate hardener, the prepolymer obtained by the interaction of 4,4'-diphenylmethanediisocyanate and oligonucleotide molecular weight 2000-2200, the content of hydroxyl groups of 1.2 to 1.9% when the ratio of isocyanate and hydroxyl groups is 2:1 with a content of isocyanate groups in the prepolymer 4-5% in combination with an additional cross-linking agent mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine (itakura 300).

Butadiene nature of the main chain isocyanate prepolymer hardener and diene molecular chains of the rubber compositions allow you reach the full compatibility isocyanate hardener and base. As a result, when the mixture increases the homogeneity of the composition, increases the efficiency of crosslinking. In addition, higher molecular weight flexible diene chain between the isocyanate groups in the molecule of the curing agent allows you to move the mesh nodes arising from the reaction of hydroxyl groups of rubber, amino 3,5-diethyltoluenediamine (atakor 300) and the isocyanate groups of the hardener. However due to the large flexibility of cross-linked diene chains is their orientation and strengthening of the cured elastomer. The combination of the isocyanate prepolymer and itakura leads to the formation of additional nodes stitching without loss of viscoelasticity and increase strength.

In addition, the increase in strength is achieved by using as the rubber composition of the rubber, plasticizer, filler, pigment and antioxidant, in which all components are pre-dispersed to a homogeneous state until the introduction of the isocyanate prepolymer, catalyst retinoblastoma and 3.5-dimethylethylenediamine as a crosslinking agent and prior to the beginning of structure formation in the composition.

Rubber base is a suspension of powdered fillers, plasticizers, pigments and antioxidants in liquid hydrocarbon gidroksilaminami is the rubber. Rubber based compositions for coatings produced commercially by THE 5775-004-22474224-96 - polyurethane mastic; on THE other 5775-001-34702 890-99 - composition danurasana "Sportline"; on THE other 2513-560-22462037-98 - composition "Alastor".

As a low molecular weight hydroxyl-containing rubber is used SOPS-1K, Krasol. SOPS-1K liquid copolymer of isoprene to butadiene ratio of isoprene and butadiene, 20:80, the content of hydroxyl groups of from 0.7 to 1.1%. Cresol - liquid butadiene rubber molecular weight of from 2000 to 5000, the content of hydroxyl groups of from 0.6 to 1.9%.

To obtain the isocyanate prepolymer use of low molecular weight hydroxyl-containing rubber Krasol LBH-2000. The isocyanate prepolymer receive the following procedure: a sample of 200 g of the rubber content of 1.2 to 1.9% of hydroxyl groups are placed in a flask, heated to 80C. with stirring, maintained at this temperature under vacuum at a residual pressure of not higher than 10 mm Hg for 60 minutes, enter 35,2-of 41.9 g of 4,4'-diphenylmethanediisocyanate and incubated at 80C under stirring for 2 hours. The resulting prepolymer is poured and cooled.

As softener of rubber Foundation contains compounds used in the production of elastomeric materials based on diene rubbers: alkyl(aryl)new esters of phthalic or phosphoric acid, chlorinated paraffin wax. For example, chloroparaffin CP-470, dibutylphthalate; oil of petroleum origin, such as butter CHM "Naloxol" on the basis of saturated hydrocarbons of the paraffin series CnH2n+2n=10-30.

Fillers for rubber base serve as crumb rubber, mineral powders such as chalk, lime-dropout, calcium oxide, kaolin, talc, lime, etc.

As an antioxidant, rubber base includes mainly colorless treatment of phenolic or organophosphorus compounds, such as 2,6-ditretbutyl-4-METHYLPHENOL (Agidol-1), 2,4,6-tetrachlorophenol, 2,2-methylene-bis-(4-methyl-6-tertbutylphenol)n (product 2246).

Pigments for rubber bases are oxides of iron, chromium, zinc, titanium and other elements, organic azo and phthalocyanine pigments, phtalocyanine green, phtalocyanine blue, iron oxide red, iron oxide yellow, yellow crowns, crowns lemon, yellow translucent, red 4, red 5 C.

As a catalyst retinoblastoma use tertiary amines or ORGANOMETALLIC compounds, commonly used in polyurethane chemistry, such as dimethylbenzylamine, dibutylthiourea tin, octoate tin, etc.

The technical result is an increase in strength of the coating when using isocyanate diene prepolymer hardener and a rubber base combined with a mixture of 2,4 - and 2,6-isomers of 3,diethyltoluenediamine (atakor 300) as a crosslinking agent, it is not obvious, since the analysis of the known solutions do not give grounds to assume that the combination of these components should lead to improving the strength of the hardened products.

For the manufacture of compositions for coating use mixing equipment to ensure the homogenization of the isocyanate prepolymer, catalyst retinoblastoma and cross-linking agent - atakor 300 in the rubber composition.

Rubber base is prepared beforehand by mixing and dispersion in rubber all components: powdered fillers, plasticizers, antioxidants, pigments. An industrial application of the components is dispersed in the rubber before milling degree not greater than 100 microns in a ball mill. The isocyanate prepolymer, atakor 300 and the catalyst retinoblastoma come complete with rubber base and put it directly before preparing polymeric compositions and applied on the ground. The invention is illustrated by the following example.

The hanging rubber base 200 g, 2 g of ethacure 300 is placed in the mixer, ensuring uniform mixing, or glass for hand mixing with a spatula. Stirred for 5 minutes until smooth, enter the portion 52 g of isocyanate prepolymer, 0.2 g of catalyst and again stirred for 5 m is the gram (Composition No. 1 in table 1.) The resulting mixture is poured onto a flat shape and can stand up to full cure at room temperature. Control curing in terms of hardness. The curing time at 20-25C for 3-5 days, after which the hardness of the samples ceases to change. Similarly prepared composition of other compositions. The composition of the prototype is prepared by sequential injection and mixing of rubber with all components. The composition of all investigated compositions are given in table 1. Properties of samples of the coatings of the compositions are shown in table 2. Testing of the samples was carried out according to known standard methods.

From table 2 it is seen that the claimed composition provides coatings with higher complex characteristics. Increases the strength, elongation at break, hardness and elasticity. The increase of the complex mechanical properties is achieved by using a rubber base and offer isocyanate prepolymer hardener in combination with itakura 300.

The reduction of the number of isocyanate prepolymer leads to a decrease in strength due to the significant deviation of the ratio of NCO:OH of equimolecular and reduce the density of the stitching. When large amounts of prepolymer strength also decreases because of the excess NCO groups, the tendency to foaming, the increase in the rigidity of the cured product.

td align="center"> 100
Table 1
The composition
Name of the componentComposition, parts by weight
1234567891011121314A prototype RF Patent 2285026
12345678910111213141516
1. Rubber Foundation100100100100100100100100100100100100100-
1) Rubber:100100100
- Krasol LBH-3000100100100100100100100100100100
rubber SOPS-1--- ----100100------
2) Filler
- Mel90160160160160220480160-16016016052080160
- lime-dropout 10606060606022060606060
- calcium oxide-----1020------10-
3) Plasticizer:
- chloroparaffin CP-470------180-100------
- oil "Naloxol"60909090-90-90-9090901905090
- dibutyl----80------ ----
4) Pigment55101011225555200,55
5) Antioxidant1,51,51,51,5222111220,531,5
2. Catalyst retinoblastoma0,10,10,10,10,010,010,01 0,010,010,010,010,010,0050,150,01
3. The isocyanate prepolymer2628323741373737373843455118
4. Atakor 3001111111111,51,522,50,5-
5. The polyisocyanate--- -----------16
6. Glycerin--------------1
Notes:
1. In the compounds 5-8 and 14 used pigment phtalocyanine green and phtalocyanine blue, respectively; compounds 3, 4 and 13 - zinc oxide and titanium dioxide; a composition of 9 - yellow lightfastness, in other formulations, the pigment is red iron oxide.
2. In compounds 1-4 and 14 used catalyst octoate tin, the rest - dibutylthiourea tin.
3. In approximately the Ah 1, 2 and 14 the antioxidant 2,4,6-tetrachlorophenol, in the 3 - 2,2-methylene-bis-4-methyl-6 tertbutylphenol, in the other - 2,6-ditretbutyl-4-METHYLPHENOL (Agidol-1).
4. The isocyanate prepolymer in compounds 1-3 and 14 contained 4,0% NCO groups in the compounds 4-11 - 4.5% of the NCO groups and the remaining 5% of the NCO groups.

Table 2
Properties of coatings
IndicesThe compositions of songsPrototype - RF Patent 2285026
1234567891011121314
1. Conditional tensile strength, kgf/cm218202328206 16252925292711715
Otnositelnoi elongation, %300290280290220210130210200220210200110180120
3. Hardness, shore A, usled585961636160626064636465604848

The number and nature of the pigment does not affect the mechanical the properties of coatings change only the color and intensity of color.

The number of ethacure 300 - linking agent, as well as the number of isocyanate prepolymer has a significant influence on the properties of the coatings. At low content of ethacure 300 decreases the degree of crosslinking, with the rich content needs to increase the amount of prepolymer, which leads to higher density of cross-linking to increase stiffness and loss of strength.

Catalyst retinoblastoma regulates the viability and curing speed without affecting the properties of the coating.

The increase in the degree of filling rubber composition creates difficulties when mixing and formation of the monolithic structure of the coating due to the large proportion of dry ingredients. The mixture is difficult when small quantities of plasticizers, and the upper limit of plasticizers limited compatibility with polymers.

The antioxidant has little effect on the properties of hardened coatings typically use within 1-2 parts by weight of a Smaller number reduces the resistance to thermal-oxidative aging, and large doses can lead to deterioration in strength due to the potential deactivation of the isocyanate groups of the prepolymer with hydroxyl groups of the antioxidant.

Thus, the advantage of the coatings of the proposed composition is to increase strength, elastic the spine, the hardness and relative elongation.

1. Composition for coating comprising isocyanate hardener, catalyst retinoblastoma and rubber base made from low molecular weight hydroxyl-containing rubber, plasticizer, filler, antioxidant and pigment, characterized in that as isocyanate hardener contains a prepolymer obtained by the interaction of 4,4'-diphenylmethanediisocyanate and oligonucleotide molecular weight 2000-2200, the content of hydroxyl groups of 1.2 to 1.9% when the ratio of isocyanate and hydroxyl groups is 2:1 with a content of isocyanate groups in the prepolymer 4,0-5,0% in the following ratio of components, rubber base, parts by weight:

Low molecular weight hydroxyl-containing rubber100
The plasticizer60-180
Filler100-500
Antioxidant1-2
Pigment1-10

and additionally mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine in the ratio of 80:20 in the following ratio of the components of the composition, parts by weight:
Rubber Foundation100
Specified isocyanate hardener26-45
A mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine1-2
Catalyst retinoblastomaof 0.01-0.1

2. Composition for coating according to claim 1, characterized in that as a low molecular weight hydroxyl-containing rubber rubber base it contains a liquid copolymer of isoprene to butadiene SOPS-1K, with a content of hydroxyl groups of 0.7-1.1 percent or liquid butadiene rubber molecular weight of from 2000 to 5000 content of hydroxyl groups of from 0.6 to 1.9% brand Cresol.

3. Composition for coating according to claim 1, characterized in that as a plasticizer rubber base it contains a plasticizer selected from the group consisting of alkylamine phthalic or phosphoric acids, chloroparaffin, oils of petroleum origin softner MP or Naloxol".

4. Composition for coating according to claim 1, characterized in that the filler bases it contains a filler selected from the group consisting of chalk, lime-dropout, calcium oxide.

5. Composition for coating according to claim 1, characterized in that as antioxidant bases it contains the antioxidant, selected from the group consisting of ALKYLPHENOLS connection 2,6-ditretbutyl-4-METHYLPHENOL (Agidol-1), 2,4,6-tetrachlorophenol, 2,2-methylene-bis-(4-methyl-6-tertbutylphenol) (product 2246).

6. Composition for coating according to claim 1, characterized in that as a pigment bases it contains pigments selected from the group consisting of chromium oxide, zinc oxide, titanium dioxide, iron oxide pigments, organic azo and phthalocyanine pigments.



 

Same patents:
Polymer composition // 2421494

FIELD: chemistry.

SUBSTANCE: composition contains an isocynate hardener, urethane-formation catalyst, a rubber base and glycerin. The rubber base contains low-molecular hydroxyl-containing rubber, a plasticiser, filler, an antiageing agent and a pigment. The isocynate hardener is a prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligodiene diol with molecular weight 2000-2200, content of hydroxyl groups of 1.2-1.9% with the ratio of isocyanate to hydroxl groups equal to 2:1 with content of isocyanate groups in the prepolymer equal to 4-5%.

EFFECT: composition enables to obtain coatings with high strength, hardness and elasticity.

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Coating composition // 2421493

FIELD: chemistry.

SUBSTANCE: coating composition contains an isocynate prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligobutadiene diol with molecular weight 2800-3200, content of hydroxyl groups of 0.88-1.3% with ratio of isocynate to hydroxyl groups equal to 4:1, with content of isocyanate groups in the prepolymer equal to 8.0-9.7%, a base - rubber composition of low-molecular hydroxyl-containing rubber, a plasticiser, filler, an anti-ageing agent and a pigment, a urethane-formation catalyst and 3,3'-dichloro-4,4'-diaminodiphenyl methane.

EFFECT: high strength, hardness and relative elongation of coatings.

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Coating composition // 2412971

FIELD: chemistry.

SUBSTANCE: invention relates to liquid rubber based compositions for coating playgrounds, floors, roofs and applying insulation coatings in construction. The coating composition contains an isocyanate prepolymer obtained from reacting 4,4'-diphenylmethanediisocyanate and oligodienediol with molecular weight 2800-3200, content of hydroxyl groups of 0.88-1.3% with ratio of isocyanate to hydroxyl groups equal to 4:1, with content of isocyanate groups in the prepolymer of 8.0-9.7%, a base - rubber composition from low-molecular weight hydroxyl-containing rubber, plasticiser, filler, anti-ageing agent and a pigment, a urethane formation catalyst and a mixture of 2,4- and 2,6-isomers of 3,5-dimethylthiotoluylene diamine in ratio of 80:20.

EFFECT: composition increases strength, hardness and relative elongation of the coating.

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FIELD: construction.

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EFFECT: increased strength, elasticity and hardness.

6 cl, 2 tbl

Polymer composition // 2397193

FIELD: chemistry.

SUBSTANCE: invention relates to polymer compositions for elastomeric waterproofing, roof coating, floor and sports field coatings. The said composition contains 100 pts. wt isocyanate prepolymer, 3-30 pts. wt ethoxylated glycerin or glycerin, or trimethylol propane as a hardener and 0.005-0.01 pts. wt tin dibutyl dilurate. The isocyanate prepolymer used is obtained by reacting four moles of 4,4'-diphenylmethane diisocyanate and one mole of oligobutadiene diol with molecular weight of 2800-3200, containing 0.9-1.3% hydroxyl groups, while the prepolymer contains 8.0-9.7% isocyanate groups.

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Polymer composition // 2397192

FIELD: chemistry.

SUBSTANCE: invention relates to a polymer composition for elastomeric waterproofing, roof coating, floor and sports field coatings. The composition contains 100 pts. wt isocyanate prepolymer and 11-31 pts. wt hardener. The isocyanate prepolymer used is obtained by reacting four moles of 4,4'-diphenylmethane diisocyanate and one mole of oligobutadiene diol with molecular weight of 2800-3200, containing 0.9-1.3% hydroxyl groups, while the prepolymer contains 8.0-9.7% isocyanate groups. The hardener used is 3,3'-dichloro-4,4'-diaminodiphenylmethane or a mixture of 2,4 and 2,6 isomers of 3,5-dimethylthiotoluylenediamine in ratio of 80:20.

EFFECT: polymer composition provides improved strength properties of elastomers and coatings obtained from it, specifically higher strength, hardness, relative elongation and adhesion properties of the coating.

1 tbl

Polymer composition // 2393190

FIELD: chemistry.

SUBSTANCE: invention relates to a polymer composition for elastomer roof coatings, floor and sports field coatings. The composition contains the following in pts. wt: 100 - isocyanate prepolymer, 1.8-1.5 - ethoxylated glycerin or glycerin or trimethylolpropane and 0.01-0.05 - tin dibutyldilaurate. The isocyanate prepolymer used contains 4.0-5.0% isocyanate groups and is obtained by reacting two moles of 4,4'-diphenylmethanediisocyanate and one mole of oligobutadienediol with molecular weight of 1800-2200 and 1.2-1.9% content of hydroxyl groups.

EFFECT: coatings based on the disclosed composition have high strength, hardness and elasticity.

1 tbl

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EFFECT: possibility to make measurements of drinking water.

23 cl, 2 dwg

Rubber covering // 2285026

FIELD: rubber industry.

SUBSTANCE: invention relates to rubber coverings used for sports grounds and insulation coatings in construction. Composition contains, as base material, 100 wt parts hydroxyl-containing polybutadiene rubber composed of (microstructure): 10-18% cis-1,4, 18-28% trans-1,4, 58-70% 1,2-units with molecular mass 2100 content of hydroxyl groups 0.88-1.36%, or molecular mass 5000-5300 and content of hydroxyl groups 0.6-0.8%; 10-36 wt parts polyisocyanate; and 0.001-3.0 wt parts urethane-formation catalyst. Composition may further contain moisture-absorption component, filler, plasticizer, low-molecular weight alcohol or aminophenol component, alkylphenol antiaging agent, pigment, and rheological property modifier.

EFFECT: improved wear resistance and mechanical properties of coverings.

8 cl, 2 tbl

Polymer composition // 2421494

FIELD: chemistry.

SUBSTANCE: composition contains an isocynate hardener, urethane-formation catalyst, a rubber base and glycerin. The rubber base contains low-molecular hydroxyl-containing rubber, a plasticiser, filler, an antiageing agent and a pigment. The isocynate hardener is a prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligodiene diol with molecular weight 2000-2200, content of hydroxyl groups of 1.2-1.9% with the ratio of isocyanate to hydroxl groups equal to 2:1 with content of isocyanate groups in the prepolymer equal to 4-5%.

EFFECT: composition enables to obtain coatings with high strength, hardness and elasticity.

6 cl, 2 tbl

Coating composition // 2421493

FIELD: chemistry.

SUBSTANCE: coating composition contains an isocynate prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligobutadiene diol with molecular weight 2800-3200, content of hydroxyl groups of 0.88-1.3% with ratio of isocynate to hydroxyl groups equal to 4:1, with content of isocyanate groups in the prepolymer equal to 8.0-9.7%, a base - rubber composition of low-molecular hydroxyl-containing rubber, a plasticiser, filler, an anti-ageing agent and a pigment, a urethane-formation catalyst and 3,3'-dichloro-4,4'-diaminodiphenyl methane.

EFFECT: high strength, hardness and relative elongation of coatings.

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FIELD: chemistry.

SUBSTANCE: invention relates to a paint composition containing a hydrophobic latex polymer component for endowing resistance to softening by water and staining of the paint film obtained from the latex paint produced from the paint composition, as well as paint, a paint film and production method thereof.

EFFECT: invention enables to obtain a latex paint film and a latex paint, which are not sensitive to water, staining, deterioration of lustre and change in rheological properties.

11 cl, 7 ex

Coating composition // 2412971

FIELD: chemistry.

SUBSTANCE: invention relates to liquid rubber based compositions for coating playgrounds, floors, roofs and applying insulation coatings in construction. The coating composition contains an isocyanate prepolymer obtained from reacting 4,4'-diphenylmethanediisocyanate and oligodienediol with molecular weight 2800-3200, content of hydroxyl groups of 0.88-1.3% with ratio of isocyanate to hydroxyl groups equal to 4:1, with content of isocyanate groups in the prepolymer of 8.0-9.7%, a base - rubber composition from low-molecular weight hydroxyl-containing rubber, plasticiser, filler, anti-ageing agent and a pigment, a urethane formation catalyst and a mixture of 2,4- and 2,6-isomers of 3,5-dimethylthiotoluylene diamine in ratio of 80:20.

EFFECT: composition increases strength, hardness and relative elongation of the coating.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymeric compositions used in making water-proofing and sealing adhesive coatings. The composition contains SKS synthetic non-specific rubber (waste products), bitumen, waste industrial oil, chalk, octophor-N.

EFFECT: composition has water absorption of 0,17-0,19 wt % and relative elongation of 42,80-44,26%.

1 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for articles made from copper-zinc alloys based on KC-0125 lacquer contains 682% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from copper-zinc alloys having a complex shape involves preparing the surface, chemical cleaning, washing in hot water, washing in flowing cold water, etching, washing in flowing cold water, passivation, washing in flowing cold water. The lacquer film is deposited onto waveguide devices made from copper-zinc alloys having a complex shape by simple immersion of the said lacquer composition for 3-5 minutes at 15-28C and then washing with flowing cold water, drying for not less than 0.5 hours at 110-120C.

EFFECT: protective lacquer composition can form a corrosion-resistant coating on the surface of copper-zinc alloys.

2 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 682% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from aluminium alloys having a complex shape is realised by preparing the surface by etching, washing in flowing hot water, washing in flowing cold water, clarification, washing in flowing cold water, chemical oxidation, washing in flowing cold water, removing condensed moisture, chemical cleaning and washing in flowing cold water. Said lacquer composition is then applied by simple immersion for 3-5 minutes at 15-35C and washing in flowing cold water. The lacquer coating is deposited in a solution containing linoleic acid, oxalic acid, mixture of isopropyl alcohol and water in ratio of 1:1 and then washing in flowing cold water, removing condensed moisture and curing at 110-120C for not less than 30 minutes.

EFFECT: obtaining a protective lacquer coating which can form a non-porous, corrosion-resistant coating on the surface of oxidised aluminium alloys with reduction of hardening temperature of the composition.

2 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to protective coating compositions. The self-oxidisable protective coating composition contains a liquid aqueous dispersion medium and binder. The binder contains an unsaturated copolymer which contains i) not less than one unsaturated fatty acid of drying oil obtained from a reaction of an unsaturated fatty acid with the epoxy group of an ethylene unsaturated monomer and ii) one or more monomers which copolymerise with i), where not less than 15% of the mass of the binder is in form of microgel. Particles of the microgel have size of 20-750 nm. The unsaturated copolymer has maximum calculated Fox glass transition temperature (Tg) of 8C. The copolymerising monomer is an acrylic monomer obtained from esters of acrylic and methacrylic acids, esters of acrylic and methacrylic acids and aliphatic or aromatic alcohols, styrene, substituted styrene, vinylcarboxylate esters and olefins selected from ethylene, propylene, butene-1 and styrenes and homopolymers thereof. Described also is a dispersion of particles of an unsaturated copolymer for a self-oxidisable coating, method of preparing the dispersion and a protective coating made from the self-oxidisable composition described above. The method of preparing a dispersion of particles of an unsaturated copolymer involves emulsion copolymerisation of an unsaturated fatty acid of drying oil and copolymerisable monomers using a redox initiation system. Polymerisation takes place at 30-45C. The redox initiation system is taken in amount of 0.15-0.50% of the total mass of the monomers.

EFFECT: disclosed self-oxidisable composition enables to obtain a protective coating with good physical and mechanical characteristics.

23 cl, 5 tbl, 24 ex

FIELD: construction industry.

SUBSTANCE: invention refers to floor covering of rubber-polyolefine composition and method of obtaining thereof. Covering for surface includes 5 to 50 wt/wt % of thermoplastic material chosen from the group including polyethylene of extra-high molar weight, ion metre or copolymer of ethylene with methylmethacrylate, copolymer of ethylene with acrylamide, polystyrene, copolymers of ethylene with butyl acrylate, ethylene with methyl acrylate, ethylene with vinyl acetate, ethylene with octane, polyvinyl chloride, polyethylene, polypropylene, polybutene, and their mixture, from 5 to 50 wt/wt % of elastomeric material chosen from the group including styrene-butadiene rubber, nitrile-butadiene rubber, natural rubber, isoprene rubber, ethylene-propylene rubber and their mixture, from 5 to 20 wt/wt % of resin with high content of styrene, from 25 to 70 wt/wt % of filler and from 1 to 10 wt/wt % of vulcanising system. Method is implemented by mixing thermoplastic material, elastomeric material, resin with high content of styrene, filler, vulcanising system, calendering of mixture thus obtaining at least two calendered sheets, granulation of these sheets thus obtaining granules, mixing of the above granules and obtaining marble-like coating for surface by means of these granules and vulcanisation of elastomeric material.

EFFECT: obtaining the coating with increased resistance to tear and resistance to formation of spots.

9 cl, 1 dwg

FIELD: printing industry.

SUBSTANCE: composition contain the following components a) from 1 to 30 wt % per total mass of organic dye pigment composition, b) from 1 to 20 wt % of one or several binding substances, c) from 0 to 20 wt % of starch, d) from 0 to 10 wt % of anion direct dye, e) from 0 to 10 wt % of one or several auxiliary substances and f) water of up to 100%. Method for application of this composition and its use are also described.

EFFECT: improved resistance of organic pigments penetration and increased saturation of painting on paper.

8 cl, 4 tbl, 76 ex

FIELD: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.

SUBSTANCE: claimed composition contains: butadiene-styrene thermoelastomer, diepoxy resin, filler (carbon black), solvent (toluene), pigment filler, containing aluminum and iron hydroxides and additionally indene-coumarone resin, waterproofing agent (liquid polymethylsiloxane), and stabilizer.

EFFECT: composition with high adhesion to concrete and metal surface and improved strength.

2 tbl

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