Rubber covering

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

 

The invention relates to a rubber coating on the basis of liquid hydrocarbon rubbers designed for devices primarily coatings playgrounds, floors, roofing and insulating materials in construction.

Known composition for coating comprising a copolymer of butadiene and piperylene with a molecular mass of 1200-3200 and 500-1200, glycerin, polyisocyanate, catalyst retinoblastoma and rubber crumb (see RF patent 1229214, MKI 09 D No.3 / 72, 1984). The lack of coverage of this composition is a low wear resistance.

Known composition for coating comprising a low molecular weight butadienestyrene rubber molecular weight 1200-3200, glycerin, polyisocyanate, catalyst retinoblastoma, gidrauxilirovaniu rubber crumb and calcium oxide (see RF patent 2024564, 09 D 109/00, 1994).

The disadvantage of this composition is a high-abrasion coatings from it because of the wide molecularmass distribution and low functionality butadienestyrene rubber.

Known composition for coating (see RF patent 2186812, 09 D 109/00, 2000), comprising a copolymer of butadiene with isoprene ratio of monomers to 70:30, molecular weight 4000-5000, the content of hydroxyl groups of 0.75 to 0.89 wt.%, plasticizer, mineral filler, trifunctionally low molecular weight alcohol, polyiso ianal, catalyst retinoblastoma, 2,4,6-tri-tertbutylphenol and ethyl silicate.

A coating of this composition has insufficient wear resistance, low abrasion resistance, which is especially important for floorings for sports facilities and waterproofing coatings. High abrasion coating caused by the characteristics of the used rubber, the structure of the Monomeric composition of macromolecules rubber. The high content of isoprene units in combination with a high degree of filling inactive mineral fillers (up to 150 parts by weight) does not allow to obtain coatings with sufficient wear resistance.

The closest solution of the present invention is a composition (see RF patent 2190002, 09 D 175/08, 2000) based on oligonucleotide molecular weight of 2000-5000, the content of hydroxyl groups 0,7-1,7%, including 100 parts by weight of plasticizer 5-30, mineral filler, 90-150, trifunctionally low molecular weight alcohol 1-5, the polyisocyanate 12-24, ORGANOTIN catalyst is 0.01-1,1; 2,4,6-tri-tertbutylphenol 0.5 to 1.5, ethyl silicate 0,8-1,6.

Coatings of this composition have a low wear resistance, which is associated with a very broad molecular weight distribution of macromolecules polybutadiene. The minimum and maximum molecular weight differs by 2.5 times, which does not allow for curing of the coating SFD shall inform regular and uniform grid structure.

The purpose of the invention is improving the abrasion resistance of the coating.

This objective is achieved in that the composition for coating as the basis contains hydroxyl-containing polybutadiene rubber microstructure, %: 1,4-CIS 10-18, 1,4-TRANS 18-28, 1,2-links 58-70, with a molecular mass of 500-5300 and the content of hydroxyl groups of 0.6-0.8% in the following ratio of components, parts by weight:

the specified hydroxyl-containing polybutadiene rubber100
isocyanate curing agent10-36
catalyst retinoblastomaof 0.001 to 3.0

The composition may contain a desiccant, such as calcium oxide, gypsum, cement, a filler, a plasticizer and/or solvent; low molecular weight alcohol with not less than two hydroxyl groups or aminophenolic component of the AF-2; ALKYLPHENOLS or phosphorus-containing antioxidant; a pigment; at least one component selected from the group consisting of rheology modifiers, wetting, protivovspenivayushchie substances that prevent delamination, contributing to the removal of gases, dispersing agents and mixtures thereof.

The invention consists in using as the basis of the hydroxyl-containing composition of polybutadien the new rubber with narrow molecular weight distribution, this helps to ensure better functionality and more advanced distribution by type of functionality, in particular provides a lower content of monofunctional not macromolecules due to a higher proportion of bifunctional macrocephaly. The content of the bifunctional macromolecules over 92%, with the share misfunctioning not participating in the structuring and sharply deteriorating properties of the coatings macromolecules less than 2%.

Narrow molecular weight distribution, along with functionality close to two, with absence of non-functional impurities rubber allows you to realize when structuring a near-perfect spatial grid crosslinked elastomer coating, in which all the circuits are equivalent in the same degree of perceived stress. This leads to reduced stress, improved elasticise active chains per unit volume.

This allows for a more dense and uniform stitched grid of the cured elastomeric product with high complex of mechanical properties and wear resistance. Increased wear also provides the microstructure of the used rubber.

The ratio of 1,4-CIS, TRANS and 1,2-links polybutadiene provides good video rate it with isocyanate hardener. Higher compatible with the cost of hardener with rubber promotes effective interaction between isocyanate and hydroxyl groups, without education zones microrasbora the cured product.

Hydroxyl-containing polybutadiene rubber is a product of anionic polymerization, linear structure, the chemical structure:

where R is H; CH3.

The average molecular weight of 2100, a hydroxyl number of 1.2 to 1.9%.

The average molecular weight of 3000, a hydroxyl number of from 0.88 to 1.36%.

The average molecular weight of 5000 and a hydroxyl number of 0.6-0.8%.

The content of the bifunctional macromolecules of at least 92%, monofunctional not more than 6%, non-functional - less than 2%. The viscosity at 25°With Brookfield:

Molecular weight 2100 -7-11 Pa.s
Molecular weight of 3000 -14-16 Pa.s
Molecular weight of 5000 -30-36 Pa.s

The microstructure contains:

1.4-CIS10-18%
1,4-TRANS18-28%
1.2 links58-70%

Density of 0.9 g/cm3.

As the curing agent in the composition used polyisocyanates, in particular polymethylenepolyphenylisocyanate based on 4,4-diphenylmethanediisocyanate (TU-6-03-375-75, 113-03-38-106-90, 113-03-603-86, 2224-152-04691277-96) or their foreign equivalents: Desmodur, suprasec 500, vortex DM-100 company Kunstman Polyurethane (Belgium) and the other with the content of isocyanate groups 29-32%.

As a catalyst retinoblastoma used tertiary amines or ORGANOMETALLIC compounds, such as triethylamine (GOST 9966-85), tributylamine (TU 6-09-2870-78), dimethylbenzylamine (TU 6-09-2974-78), dibutyltindilaurate tin (TU 6-02-818-73), octoate tin and other ORGANOTIN and amino compounds used in polyurethane chemistry.

As moist collectors used calcium oxide, calcium sulfate (gypsum), cement, capable of chemical and sorption interaction with water at the stage of mixing of the composition and dispersion of the components in the rubber matrix until retinoblastoma.

Fillers are mineral powders and crumb rubber, such as chalk, lime - dropout, kaolin, talc, dolomite powder, barite.

As the plasticizer composition includes an alkyl(aryl)new esters of phthalic, such as chlorinated paraffin wax, for example, dibutyl phthalate, dioctylphthalate, chloroparaffin CP-330, CP-470; oil softening agent MP and butter "Naloxol" oil origin; or phosphoric acid, for example, alkyl(aryl)phosphates, such as hydraulic fluid DALY (TU 6-00-0210054-008-90), representing a mixture of dibutyltindilaurate (80%), tributyl phosphate (10%), diphenylmethylphosphine (9%) and triphenyl (1%); white spirit.

p> As a low molecular weight alcohol composition contains glycerin, trimethylolpropane, triethanolamine, polyester Laprol 373 (TU 2226-024-1048857-95), obtained by condensation of glycerol and propylene oxide, aminophenolic component AF-2 (TU 06-05-1663-79, THE 38-3034083). As the alkyl-phenolic antioxidant composition comprises 2,6-ditretbutyl-4-METHYLPHENOL, trade name ionol, Agidol 1, alkoven PSU with the following features: white or yellowish crystalline powder with a melting point of 70°S, soluble in hydrocarbons and hydrocarbon rubbers; 2,4,6-tetrachlorophenol, trade name of alkoven B or P-23; 2,2'-methylene-bis-(4-methyl-6-tertbutylphenol), trade name NG-2246.

The pigments in the composition are the oxides of iron, chromium, zinc, titanium and other elements, organic azo and phthalocyanine pigments, for example, phtalocyanine green, phtalocyanine blue, iron oxide red, iron oxide yellow, yellow crowns, crowns lemon, lightfastness yellow, red 4, red 5 C.

As components for improving rheological properties, wettability, contributing to the dispersion and removal of gases, the composition comprises surfactants, such as oleic or stearic acid or organosiloxane modifiers.

In the composition can be injected component is, not affect the envisaged technical result, but gives the material covering other benefits. For example, a surfactant for facilitating the dispersion and reduce the time of mixing, in particular stearic, oleic acid, OP 7, OP-10, an organic diluent.

For the manufacture of a composition using mixing equipment to ensure homogenization isocyanate hardener and catalyst retinoblastoma in low molecular weight rubber, powder dispersion of fillers and pigments, dissolving rubber in the plasticizer or plasticizer, antioxidants and additives in the rubber. The degree of milling of the solid particles should not exceed 100 microns. During the industrial use of the composition isocyanate hardener are supplied complete with song and give it directly before coating.

The invention is illustrated by the following example. In a mixer with anchor stirrer 1 liter load of 300 g of rubber, 60 g of isocyanate curing agent, 0.3 g of catalyst (dibutyltindilaurate tin), the mixture is stirred for 10 minutes. The resulting mass is poured to form and maintain at a temperature of not lower than 20°C for 3-5 days. The composition corresponds to example 1 in table 1.

Compositions containing fillers and other additives in soo is Ted claims, prepared as follows. In the mixer download prescription quantity of rubber, filler, pigments, antioxidants, moist collectors.

The mass is stirred for 2 hours, add a plasticizer, a solvent, a low molecular weight alcohol and a catalyst retinoblastoma and again stirred for 20 minutes. Then faucet enter the polyisocyanate, the composition is stirred for 10 minutes and applied on the mold for curing the coating. The composition shown in table 1. Similarly prepared composition of the prototype.

Testing of coating material is conducted according to GOST 263-93, GOST 270-75, GOST 426-66.

Properties of the samples of the coatings are shown in table 2.

From table 2 it is seen that the use as the basis of the composition claimed polybutadiene in combination with polyisocyanate and catalyst retinoblastoma provides obtaining coatings with low friction, therefore, higher wear resistance than that of the prototype, which increases the service life of the coating. The combination of rubber with a filler, an antioxidant, a plasticizer, a low molecular weight alcohol, pigment, silica gel and organosiloxanes modifiers or surfactants enhances the effect of improving wear resistance.

Coatings have a higher strength characteristics and compared with the prototype.

Coatings of the compositions 15-17 have less endurance and lower mechanical properties, which is associated with the deviation of the content of the components of the composition from optimal.

Reducing the number of MDI less than 10 parts by weight leads to the formation of laboratoy patterns and the formation of gel-like product. An increase of more than 36 parts by weight is also impractical because of the tendency to foaming during curing.

The number of vodopoglaschenie affect the integrity of the samples. If there are not enough of them in the composition of all the moisture can not be connected, which leads to the partial foaming material during curing and getting loose structure. High concentrations lead to lower deformation properties.

Increasing the amount of filler is more than 250 parts by weight creates difficulties when forming a monolithic homogeneous samples due to the high viscosity.

The high content of plasticizer (more than 100 parts by weight) and organosiloxane modifiers leads to wypadaniu it from cover because it exceeded the limits of compatibility with the rubber.

Excess doses of low molecular weight alcohol reduces the level of hardness and strength of samples and can lead to loss of the ability to cure.

Introduction more than 2 parts by weight of ALKYLPHENOLS antioxidant causes decrease is giving hardness because of the potential binding isocyanate groups.

The choice of the number of pigments is determined by the necessity of obtaining the desired color and considerations of economy.

Thus, the advantage of the coatings of the proposed composition is to increase the wear resistance, mechanical properties and service life.

1. Composition for coating comprising isocyanate curing agent is a polyisocyanate, catalyst retinoblastoma and a base, characterized in that as the basis contains hydroxyl-containing polybutadiene rubber microstructure, %: 1,4-CIS 10-18, 1,4-TRANS 18-28, 1,2-links 58-70 with 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 following 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

2. Composition for coating according to claim 1, characterized in that it further comprises 5-20 parts by weight of component moisture absorption you the security of a group, containing calcium oxide, gypsum, cement.

3. Composition for coating according to claim 1, characterized in that it additionally contains 50-250 parts by weight of a filler selected from the group consisting of chalk, lime-dropout, kaolin, talc, dolomite flour, barite or rubber crumb.

4. Composition for coating according to claims 1 to 3, characterized in that it further comprises 20-100 parts by weight of plasticizer selected from the group consisting of alkyl(aryl) esters of phthalic or phosphoric acid, chloroparaffin, oil softening agent MP and oil of petroleum origin "naloxol".

5. Composition for coating according to claim 1, characterized in that it additionally contains 1 to 8 parts by weight of a low molecular weight alcohol with not less than two hydroxyl groups or aminophenolic component of the AF-2.

6. Composition for coating according to claim 1, characterized in that it additionally contains 0.5 to 2.0 parts by weight of ALKYLPHENOLS antioxidant selected from the group consisting of 2,6-ditretbutyl-4-METHYLPHENOL, 2,4,6-tetrachlorophenol, 2,2-methylene-bis-(4-methyl-6-tertbutylphenol).

7. Composition for coating according to claim 1, characterized in that it additionally contains 0.5 to 10.0 parts by weight of pigment.

8. Composition for coating according to claim 1, characterized in that it comprises from 0.5 to 5.0 parts by weight of a rheology modifier selected from the group consisting of surfactants, olein or stearin is first acid or organosiloxane.



 

Same patents:
Rubber coating // 2268279

FIELD: rubber materials.

SUBSTANCE: invention relates to rubber coatings used mainly for sporting platforms, floorings, roofing and insulating coverings. The coating composition comprises the following components, mas. p. p.: hydroxyl-containing copolymer of isoprene and butadiene with the ratio of monomers = 20:80, molecular mass 3000-3500 Da, the content of hydroxyl groups is 0.7-1.1 wt.-%, 100; polyisocyanate, 10-36; catalyst for urethane formation, 0.001-0.3. Coating can comprise additionally a water-absorbing agent, up to 20; a filling agent, up to 250; plasticizer agent and/or solvent, up to 100; low-molecular alcohol or aminophenol component, up to 8; an alkynophenol antiager, up to 2; pigment, up to 10, and components improving rheological properties or organosiloxane modifying agents, up to 5. Proposed composition provides enhancing abrasion resistance and coating structure.

EFFECT: improved and valuable properties of coatings.

9 cl, 2 tbl, 1 ex

Coating composition // 2266935

FIELD: polymers, in particular resin compositions based on liquid hydrocarbon rubber useful in building industry for manufacturing of roofing and insulating coatings.

SUBSTANCE: claimed composition contains law molecular rubber isoprene-butadiene copolymer in monomer ratio of 20:80, having molecular weight of 3000-3500 and hydroxyl content of 0.7-1.1 mass %; polyisocyanate, waste from polycaproamide production, catalyst for urethane formation. Additionally composition may contain component moisture absorber, filler, plasticizer solvent, law molecular alcohol, antiaging agent pigment and surfactant.

EFFECT: coatings with decreased moisture absorption and increased aging resistance.

2 cl, 2 tbl

FIELD: paint and varnish coatings.

SUBSTANCE: composition comprises a semifinished product of enamel XC-5146 representing pigments and filling agents suspension in solution of partially saponificated copolymer of vinyl chloride with vinyl acetate of brand A-15-0 in mixture of organic solvents, enamel ML-1110 representing pigments suspension in solution of alkyd and melaminoformaldehyde resins and organic solvents with addition of special additives, hardening agent, 40-70% solution of urethane prepolymer with the content of isocyanate groups 8-35% in non-hydroxyl-containing organic solvents. The composition is prepared by pneumospraying method and can be used in preparing decorative coatings showing high exploitation properties.

EFFECT: valuable properties of composition.

1 tbl

The invention relates to varnishes and paints for painting plastic products from different types of plastics, both domestic and foreign firms, namely reactive layer on polyurethane or polyacrylic-based

The invention relates to the technology of binders based Uralkalij products intended for use as paints and other coatings for the surface treatment and finishing of various materials based on paper (decorative, label paper, Wallpaper, securities and so on)
Rubber coating // 2268279

FIELD: rubber materials.

SUBSTANCE: invention relates to rubber coatings used mainly for sporting platforms, floorings, roofing and insulating coverings. The coating composition comprises the following components, mas. p. p.: hydroxyl-containing copolymer of isoprene and butadiene with the ratio of monomers = 20:80, molecular mass 3000-3500 Da, the content of hydroxyl groups is 0.7-1.1 wt.-%, 100; polyisocyanate, 10-36; catalyst for urethane formation, 0.001-0.3. Coating can comprise additionally a water-absorbing agent, up to 20; a filling agent, up to 250; plasticizer agent and/or solvent, up to 100; low-molecular alcohol or aminophenol component, up to 8; an alkynophenol antiager, up to 2; pigment, up to 10, and components improving rheological properties or organosiloxane modifying agents, up to 5. Proposed composition provides enhancing abrasion resistance and coating structure.

EFFECT: improved and valuable properties of coatings.

9 cl, 2 tbl, 1 ex

FIELD: manufacture of tires for transport facility wheels.

SUBSTANCE: proposed method includes several stages: manufacture of untreated tire including at least one cross-linked elastomer material; molding the untreated tire in mold found in vulcanization chamber; cross-linking elastomer material by heating the tire to preset temperature during preset period of time. Untreated tire contains at least one material to be cross-linked; this material contains elastomer polymer containing epoxy groups at glass transition temperature Tgl.tr. below 23 C; it has at least 0.05% of molar concentration of epoxy groups relative to total number of moles of monomers present in polymer and active filler including the hydroxylic groups with area of surface exceeding 40 sq m/g as determined by wet method and density of active hydroxylic groups more than 1 group/sq nm. Active filler is dispersed in polymer. Stage of cross-linking the elastomer material is performed without additional cross-linking agents. Proposed method ensures manufacture of articles from cross-linked synthetic rubber without use of sulfur-based cross-linking systems.

EFFECT: enhanced efficiency.

50 cl, 3 dwg, 4 tbl

The invention relates to the field of production of bituminous compositions containing polymeric additives used in road construction, for the manufacture of roofing, waterproofing materials and sealants

The invention relates to polymeric compounds and methods of using them to fill cable joints

The invention relates to partially epoxydecane elastomeric compositions suitable for the manufacture of tyre tread

The invention relates to asphalt-rubber compositions and can be used in road, industrial, civil and hydraulic engineering

The invention relates to a method of obtaining high adhesion compositions based on chlorinated polyvinylchloride and chlorinated diphenylpiperazine rubber in the following ratio, wt.%: chlorinated polyvinyl chloride - 1 - 96; chlorinated diphenylpiperazine rubber - 4 - 99, and the chlorine content of the chlorinated diphenylpiperazine rubber is 45 to 55 wt.%

The rubber mixture // 2083608

The invention relates to the development of recipes vulkanizetas rubber based on butadiene-nitrile rubber for attaching to the impregnated nylon Corda was and can find application in the tire industry in the manufacture of rubber-cord casings and rubber industry in the manufacture of rubber membranes, V-belts, resistant to oils and fuels of oil origin

FIELD: manufacture of tires for transport facility wheels.

SUBSTANCE: proposed method includes several stages: manufacture of untreated tire including at least one cross-linked elastomer material; molding the untreated tire in mold found in vulcanization chamber; cross-linking elastomer material by heating the tire to preset temperature during preset period of time. Untreated tire contains at least one material to be cross-linked; this material contains elastomer polymer containing epoxy groups at glass transition temperature Tgl.tr. below 23 C; it has at least 0.05% of molar concentration of epoxy groups relative to total number of moles of monomers present in polymer and active filler including the hydroxylic groups with area of surface exceeding 40 sq m/g as determined by wet method and density of active hydroxylic groups more than 1 group/sq nm. Active filler is dispersed in polymer. Stage of cross-linking the elastomer material is performed without additional cross-linking agents. Proposed method ensures manufacture of articles from cross-linked synthetic rubber without use of sulfur-based cross-linking systems.

EFFECT: enhanced efficiency.

50 cl, 3 dwg, 4 tbl

Rubber coating // 2268279

FIELD: rubber materials.

SUBSTANCE: invention relates to rubber coatings used mainly for sporting platforms, floorings, roofing and insulating coverings. The coating composition comprises the following components, mas. p. p.: hydroxyl-containing copolymer of isoprene and butadiene with the ratio of monomers = 20:80, molecular mass 3000-3500 Da, the content of hydroxyl groups is 0.7-1.1 wt.-%, 100; polyisocyanate, 10-36; catalyst for urethane formation, 0.001-0.3. Coating can comprise additionally a water-absorbing agent, up to 20; a filling agent, up to 250; plasticizer agent and/or solvent, up to 100; low-molecular alcohol or aminophenol component, up to 8; an alkynophenol antiager, up to 2; pigment, up to 10, and components improving rheological properties or organosiloxane modifying agents, up to 5. Proposed composition provides enhancing abrasion resistance and coating structure.

EFFECT: improved and valuable properties of coatings.

9 cl, 2 tbl, 1 ex

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

Up!