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.
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 (see RF patent 2268279, C09D 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 (see 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 (see RF patent 2190002, 09D 175/08. Publ. 2709.2002).
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 (see RF patent 2285026, 09D 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 rubber||100|
|Isocyanate curing agent is a polyisocyanate||10-36|
|Catalyst retinoblastoma||of 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|
|Low molecular weight alcohol with not less than two|
|hydroxyl groups, or a component of the AF-2||1-8|
|Pigment||0.5 to 10.0|
|The rheology modifier surfactant||0,5-5,0|
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 aim of the invention is to improve the strength properties, especially the strength of the coating.
This objective is achieved in that the composition for coating comprising from tianity hardener, catalyst retinoblastoma and the Foundation, as the isocyanate hardener contains a prepolymer obtained by the interaction of 4,4'-diphenylmethanediisocyanate and oligodontia with a molecular mass of 2800-3200, the content of hydroxyl groups of from 0.88 to 1.3% when the ratio of isocyanate and hydroxyl groups of 4:1 with a content of isocyanate groups in the prepolymer 8.0 to 9.7 per cent, as the basis contains a rubber composition of low molecular weight hydroxyl-containing rubber, plasticizer, antioxidant, filler and pigment in the following ratio of the components of the rubber composition, parts by weight:
|Low molecular weight hydroxyl-containing rubber||100|
and additionally mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine in the ratio of 80:20, with the following ratio of the components of the composition, parts by weight:
|Specified isocyanate hardener||17-42|
|A mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine||1-3|
|Catalyst retinoblastoma||of 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, for example, surfactant, oleic or stearic acid, organosiloxane modifiers.
The technical result, the increase in strength is achieved through the use of hardener isocyanate prepolymer based on liquid hydroxyl-containing butadiene rubber and 4,4'-diphenylmethanediisocyanate with a ratio of NCO and HE is 4, in combination with a 3.5-dimethylethylenediamine (atakor 300). Molecular weight hydroxyl-containing rubber 2800-3200, the content of terminal hydroxyl groups in the rubber 0,88-1,3%, the content of isocyanate groups in the prepolymer 8.0 to 9.7 per cent.
Butadiene nature of the main chain isocyanate prepolymer hardener and diene molecular chains of the rubber composition can achieve full compatibility isocyanate hardener and base. As a result, when solenoidoperated 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 obtained by using as a basis 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-diethyltoluenediamine as a crosslinking agent and prior to the beginning of structure formation in the composition.
The base is a rubber composition is a suspension of powdered fillers, plasticizers, pigments, antioxidants, moist collectors in the hydroxyl-containing liquid hydrocarbon-rubber SOPS-1K, krasol. SOPS-1K - idci 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%.
Rubber composition - based compositions for coatings produced commercially by THE 5775-004-22474 224-96 - polyurethane mastic; on THE other 5775-001-34702 890-99 - composition danurasana "Sportline"; on THE other 2513-560-22462037-98 - composition "Alastor".
To obtain the isocyanate prepolymer use of low molecular weight hydroxyl-containing rubber krasol LBH-3000. The isocyanate prepolymer receive the following procedure: a sample of 200 g of the rubber content of 1.1% of hydroxyl groups are placed in a flask, heated to 80°C. with stirring, maintained at this temperature under vacuum at a residual pressure of not higher than 10 mm Hg for 60 minutes, enter to 64.8 g of 4,4'-diphenylmethanediisocyanate and incubated at 80°C under stirring for 2 hours. The resulting prepolymer is poured and cooled.
As a catalyst retinoblastoma use tertiary amines or ORGANOMETALLIC compounds, commonly used in polyurethane chemistry, such as dimethylbenzylamine, dibutylthiourea tin, octates tin, etc.
As fillers basics - rubber composition using chalk, talc, kaolin, rubber crumb, lime-fines, dolomite flour, lime and other
Plasticizers service is t a chlorinated paraffin wax, alkyl(aryl)new esters of phthalic, phosphoric acid, oil of petroleum origin. For example, chloroparaffin CP-470, oil "Naloxol", dibutyl phthalate.
As the antioxidant composition comprises predominantly 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) (product 2246).
To impart the desired color composition comprises pigments: iron oxide, chromium oxide, zinc oxide, titanium dioxide, organic azo and phthalocyanine pigments, phtalocyanine green, phtalocyanine blue and other
Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources and identify sources that contain information about the equivalents of the claimed invention, allowed the Complainant to establish the absence of analogues characterized by signs, identical to all the essential features of the claimed invention. The definition of all identified unique prototype, as the most similar in essential features analogue, revealed a set of distinctive features with respect to the apparent technical result in the claimed compositions set forth in the claims. Therefore, the claimed image is the group meets the condition of "novelty."
The technical result of the increased strength of the coating when using isocyanate diene prepolymer hardener and base in the form of a rubber composition in combination with glycerol as a crosslinking agent 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 is 3,5 - diethyltoluenediamine in the rubber composition.
A rubber composition is prepared beforehand by mixing and dispersion in rubber all components: powdered fillers, plasticizers, antioxidants, pigments, moist collectors. 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, 3,5-diethyltoluenediamine and catalyst retinoblastoma are supplied with a rubber composition and put it immediately before preparation of a composition for coating and its application on the ground.
The invention is illustrated by the following example.
On ESCO rubber composition 200 g, prescription number 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, introducing a portion of isocyanate prepolymer, catalyst and again stirred for 5 minutes. 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 20-25°C for 3-5 days, after which, the hardness of the samples ceases to change. Similarly prepared composition on the prototype by sequential injection and mixing of rubber with all components. The compositions shown 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.
|Properties of the coatings of the compositions|
|Indices||Compositions compositions (see table 1)|
|1||2||4||5||6||7||8||9||10||11||12||13||14||15||16||17||18||A prototype RF patent 2285026|
|1. Conditional tensile strength, kgf/cm2||13||26||26||38||36||32||22||34||17||21||25||36||24||20||15||25||19||15||16|
|2. Elongation, %||260||230||220||220||210||200||140||210||160||140||130||130||140||130||90||115||90||80||100|
|3. Hardness, shore a, usled||48||52||55||67||64||63||62||65||60||65||64||63||60||58||66||61||65||68||54|
|4. Ball rebound resilience, %||30||36||38||40||42||40||38||42||36||39||40||42||37||38||26||37||36||32||35|
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 the rubber composition of the substrate and curing it the isocyanate prepolymer 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.
The number and nature of the pigment does not affect the mechanical properties of the 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. When mA the om content of ethacure 300 decreases the degree of crosslinking, with the rich content of ethacure 300, you must 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 the strength, elasticity, hardness, and relative elongation.
Composition for coating comprising isocyanate hardener, catalyst retinoblastoma and a base, characterized in that as isocyanate hardener contains a prepolymer, polucen the th interaction 4,4'-diphenylmethanediisocyanate and oligodontia with a molecular mass of 2800-3200,
the content of hydroxyl groups of from 0.88 to 1.3% when the ratio of isocyanate and hydroxyl groups of 4:1 with a content of isocyanate groups in the prepolymer 8.0 to 9.7 per cent, as the basis contains a rubber composition of low molecular weight hydroxyl-containing rubber, plasticizer, filler, antioxidant and pigment in the following ratio of the components of the rubber composition, parts by weight:
|Low molecular weight hydroxyl-containing rubber||100|
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:
|Specified isocyanate hardener||17-42|
|A mixture of 2,4 - and 2,6-isomers of 3,5-diethyltoluenediamine||1-3|
|Catalyst retinoblastoma||of 0.01-0.1|
SUBSTANCE: composition contains the following components, wt parts: 100 - rubber base, 26-44 - isocyanate hardener, 0.01-0.1 - catalyst of urethane formation and 1-2 - 3,3'-dichloro-4,4'-diaminodiphenylmethane. Rubber base consists of the following components, wt parts: 100 - low-molecular hydroxyl-containing rubber, 60-190 - plasticiser, 100-480 - filler, 1-2 - anti-ageing agent and 1-10 - pigment. Isocyanate hardener represents prepolymer with content of isocyanate groups of 4.0-5.0%. Prepolymer is produced by interaction of 4,4'-diphenylmethanediisocyanate and oligodiendiol with molecular weight of 2000-2200, with 1.2-1.9% content of hydroxyl groups, at the ratio of 2:1 of isocyanate and hydroxyl groups.
EFFECT: increased strength, elasticity and hardness.
6 cl, 2 tbl
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.
EFFECT: polymer composition provides improved strength properties of elastomers and coatings obtained from it, specifically higher strength, longevity, hardness and relative elongation of the coating.
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.
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.
FIELD: machine building.
SUBSTANCE: proposed flow metre comprises magnetic-inductive or acoustic transducer with metal measuring pipe fitted into pipeline. Aforesaid pipe inside is lined with organic-plastic (elastomer) comprising polyurethane produced from multi-component system consisting of prepolymer, bivalent alcohol and catalyst containing metal organic (primarily, organotin) compounds. Polyurethane lining comprises organically bound tin.
EFFECT: possibility to make measurements of drinking water.
23 cl, 2 dwg
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
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: 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.
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
SUBSTANCE: protective lacquer composition for articles made from copper-zinc alloys based on KC-0125 lacquer contains 68±2% 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 15-28°C and then washing with flowing cold water, drying for not less than 0.5 hours at 110-120°C.
EFFECT: protective lacquer composition can form a corrosion-resistant coating on the surface of copper-zinc alloys.
2 cl, 3 ex
SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 68±2% 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 15-35°C 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 110-120°C 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
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 8°C. 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 30-45°C. 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
SUBSTANCE: invention pertains to the area of construction operations and may be employed for protection from dehydration of new concrete in construction of highways and airdromes, ameliorative and water engineering. Film-forming material for maturing of newly placed concrete contains styrene-butadiene latex "БС" 50, stiffener - sodium carboxymethyl cellulose, stabiliser ethoxylated octyl phenol "ОП-10", filler - kaolin clay, dispersing agent "НФ", adhesive additive - methylol melamine derivations mixture and water, with the following ratio of components, wt %: above said latex - 57-66, said stiffener - 0.18-0.35, said stabiliser - 0.60-0.65, kaolin clay - 14.3-16.0, dispersing agent "НФ" - 0.73-0.80, said adhesive additive - 0.03-0.04, water - the rest.
EFFECT: getting environmentally safe low toxic film-forming material, reduced specific moisture permeability of the film, enhanced strength of concrete.
SUBSTANCE: composition includes binding agent - modified with hexamethylentetramine mixture of tal pitch and technical lignosulfonates in presence of catalyst - zinc oxide, tal modified colophony, pigments - aluminium powder and titanium dioxide, zinc phosphate, neutralising filler - calcium oxide and/or calcium hydroxide and/or chalk and/or microcalcite and/or microtalc, hardener- polyethylenpolyamine and organic solvent. Composition is obtained by first mixing (modification) mixtures of tal pitch, technical lignosulfonates and hexamethylentetramine at temperature 120-140°C in presence of catalyst - zinc oxide. Mixture is cooled, tal modified colophony, pigments are added. Neutralising filler, hardener and solvent are added.
EFFECT: increased light-resistance of coating, extension of colour range and quick drying.
3 cl, 1 tbl
FIELD: inorganic chemistry.
SUBSTANCE: invention refers to production of materials used for protective coatings of various natural and man-made surfaces. Method is realised in the following way: neonol, marble powder are fine grinded in ball grinder. White spirit, aqueous ammonia (25%) and water are added and mixed to homogeneous composition which is added with carbon nanofibre, carbon nanoclusters and butadiene-styrene latex, all specified components are additionally mixed to homogeneous composition, added with defoaming agent and thickener. Produced material is packed. As carbon nanofibre and carbon nanoclusters components produced by methane pyrolysis on catalyst Ni/MgO at fibre length 50-100 mcm and diameter 20-60 nm. Finished product has high adhesive ability and protective properties as applied on metal, polymer surfaces, wood and other materials.
EFFECT: production of high-adhesive coating material with high protective properties.
FIELD: manufacture of heat-insulating materials for surfaces of any form which are also used as sound-insulating, waterproofing, anti-corrosion and sealing materials.
SUBSTANCE: proposed coat is made from composition containing the following components: binder in dry state, hollow micro-spheres and water to required consistency. Binder is selected from group containing the following components: dry copolymer re-dispersible powder or mixture in the amount of up to 95 mass-% with dry re-dispersible water glass in the amount of up to 80 mass-% and/or with cement in the amount of up to 60 mass-%. Used as follow micro-spheres is borosilicate glass at bulk density of 0.05-0.35 g/cm3. Composition may also contain filler in the amount of up to 45 mass-%.
EFFECT: possibility of obtaining ecologically pure composition of protracted term of storage; enhanced heat conductivity of coat.
3 cl, 5 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.