SUBSTANCE: invention relates to making coatings for different equipment and structural units of residential, public and industrial buildings and structures. Proposed is a paint-coating containing the following (in wt %): binder in form of solutions of acrylic (co)polymers and/or organosilicon resins in an organic solvent (10-25); additional binder in form of organosoluble polyurethanes (5-15); filler selected from microwollastonite, kaolin, micro-marble, micro-mica and/or inert barite filler (10-30); modifying additives made in form of ceramic and/or glass beads with size of 20-150 mcm (10-30); antipyrene additive (10-20) and pigment (2-4). The pigment used can be titanium dioxide. The suitable antipyrene additive is a compound from the group: phosphorus-containing compounds, hydroxides of aluminium or magnesium, zinc borate, melamine and pentaerythritol.
EFFECT: preparation of a coating with high thermo-, firer- and weather resistance, the coating also has good sound-proofing properties.
3 cl, 2 tbl, 9 ex
The invention relates to the chemical industry and applies coatings of various equipment, pipelines, metal, concrete, reinforced concrete, brick, wood and other building structures, residential, public and industrial buildings and structures. More specifically the invention relates to obtaining on the specified surface coatings with heat-and fire-resistance, heat-waterproof and anti-corrosion properties.
High-quality and heat-protective coating for a number of applications is of paramount importance, for example, when solving the problem of thermal insulation of pipelines and water supply when it is essential to ensure long-lasting protection of the pipe from external corrosion, because it is the main factor limiting their useful life. Just as important are such coatings and to protect any building structures made of metal, wood, etc. At the same time, the task of maintaining heat in residential and industrial construction, of course, is one of the primary, and the huge resources are being allocated. To solve both the first and second tasks of modern technology offers a wide range of solutions. By insulating materials, actively offer at the present time, in addition to well-known the mineral and basalt Wat and fibers, the use of different foamed polymeric materials, such as foamed polystyrene, polyethylene, polyurethane, polypropylene and other as minerals for corrosion protection of various painting materials (water dispersion, coating materials based on organic solvents), as well as protection of metal surfaces metal, resistant to corrosion, such as electrolytic zinc plating. Materials which would have had the joint effect of protecting surfaces from corrosion and thus would contribute to the conservation of heat and has a high adhesion property, at the present time practically does not exist.
Known composition to obtain a heat coating, which is a composition including an epoxy resin, a curing agent, the plasticizer, and glass microspheres with a diameter of 200-300 microns (EN 93052300, 20.07.1996). Known composition provides good mechanical and insulating properties of the coatings, however, refers to toxic substances, cumbersome and does not provide the necessary level of thermal insulating properties while protecting, for example, pipelines.
Currently in wide use are materials for water-based coatings as the most environmentally friendly materials. So, for example, known is Yong composition to produce a protective coating of pipelines from corrosion, including latex, silica sand, latex stabilizer, trisodium phosphate, glass fibre and water (SU 1717580, 07.03.1992). However, this arrangement also does not provide the necessary high complex heat-insulating properties of the obtained coating and full corrosion protection.
Closest to the claimed invention is a paint-coating comprising a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive and pigment (EN 2310670, 20.11.2007). The said coating has such disadvantages as: insufficient thermo fire chemical resistance, firing shrinkage, as well as smoke.
Objective of the claimed invention is to remedy these disadvantages. The technical result is to increase thermo-, heat - and weather resistance of the coating.
The problem is solved and the technical result is achieved by the fact that the paint-coating thermo-fire-weather-resistant includes a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive is a pigment. In the coating composition added an additional binder in the form of organic polyurethane and a filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers. As the flame retardant additive used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol. The coating has the following ratio of components:
|a flame retardant additive||10-20%,|
As a pigment may be used titanium dioxide. As the flame retardant additive can be used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol.
The paint according to the invention as above-mentioned binder contains a binder selected from the group which, includes silicone resin, various organic acrylic (co)polymers in the form of dispersions, emulsions, and additional binder is traditionally used for organic coatings polyurethanes. In particular, use polymethylsiloxane resin including a liquid siloxane rubbers (SCTN, SCTN-IN), polymethylphenylsiloxane resin PMPS (base lacquer KO-08, CO-915, etc.), polymethylphenylsiloxane rubbers (SCTP and others); PU-resin-based polyether and diphenylmethanediisocyanate or toluylene diisocyanate (for example); acrylic (co)polymers, for example copolymers of butyl methacrylate or methyl methacrylate and (meth)acrylic acid and possibly butadiene, acrylic dispersions, for example, based on styrene-acrylic copolymer, etc.
As the organic solvent used in typical organic solvents which dissolve the above polymeric binder, such as ethyl acetate, butyl acetate, acetone, toluene, etc., in particular paint may contain a copolymer of methyl methacrylate, butyl acrylate and methacrylic acid (BMP-5S, acrylic emulsion AK-211-23, butadienestyrene DMA, the dispersion of a copolymer of butyl acrylate and methacrylic acid (Lakris 41), copolymer of vinyl chloride with vinylidenechloride and maleic acid Vdvhmk-E-VDK and others.
Adding filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers can significantly improve the heat resistance, thermal stability, chemical resistance, radiation protection and acoustic properties of the coating to suppress combustion and smoke formation, to improve the flame retardant properties of the coating.
As fire proofing additives in the paint according to the invention is used additives such as, for example, phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol. The paint obtained by dispersing the components in a mixer at a rotation speed of the working body is not above 300 rpm.
The coating is applied to various surfaces by brush or airless spray gun.
To ensure the high elasticity of the paint-coating it is necessary to use a liquid paraffins, which must be entered in the formula in the manufacturing process of paint.
In the tables presents the properties of the obtained coatings on the basis of the declared paint.
Thus, the paint coating is heat-, fire - and weather-resistant.
The coating is applied to a surface of any form of equipment, pipelines, metal, concrete, reinforced concrete, brick, wood and other building design the AI residential, public and industrial buildings and structures.
The range of application of the paint-coating is very wide and includes:
- the refining, transportation and storage of oil and oil products;
industrial communication (including pipelines, proprovide, ducts);
- water supply (tanks and tanks for storage and transportation of water tanks for potable water storage);
- heating systems (water heaters for hot water preparation, etc.);
aviation industry (the inner wall of the plane);
- shipbuilding industry (ship hull);
- automotive industry (interior parts of buildings buses, motor compartments, the roofs of cars, trailers, trailers, refrigerators);
- chemical industry (capacity to store nitrogen and the like);
- industrial construction (reflecting walls in plants steel mills, the roofs of the hangars and the top of the roofs of enterprises, the outer parts of the bulkheads, bridges, roofs, sheds, garages, piles in permafrost, air conditioning systems, etc.);
- housing construction (corrugated roof top, tile roofs, metal roofs and other walls of dwellings and the inner walls of old houses, etc.);
- the military-industrial complex (various military installations);
- Stroitel the STV road and railway bridges (lowers the freezing);
- fire protection system (to prevent condensation in the pipes and so on).
The coating simultaneously provides sound good properties, i.e. simultaneously performs and the role of the sound-absorbing coating, which is especially important when using it in the construction of houses.
Used the term paint-coating is traditionally used at the present time, especially in construction and is used for quite viscous paint materials such as mastics, putties.
|Examples of inks according to the invention|
|Name of the component||The ratio of the components in the examples, wt.%|
|-||Silicone resin (polymer clay is insulationa)||25||-||11||-||-||-||20||23||25|
|-||The copolymer of butyl methacrylate and methacrylic acid||-||25||-||-||-||20||-||-||-|
|-||Styrene acrylic copolymer dispersion||-||-||-||25||25||-||-||-||-|
|-||polyurethane organic-based polyether and diphenylmethanediisocyanate (additional binder is)||11||5||15||5||5||15||10||15||15|
|2. Titanium dioxide||4||2||4||4||3||2||4||4||4|
|3. Hollow beads with a size|
|4. A flame retardant additive:|
|-||Inert barite fillers||-||-||-||-||20||-||-||-||-|
|1.||The conductivity of the paint-coating||0.04-0.05 W/m·°C|
|2.||Fire||At least 30 min|
|4.||Operating temperature range||minus 100°C - plus 280°C|
|5.||The tensile strength of the coating tensile, MPa||3.0|
|6.||The tensile strength of the coating in compression, MPa||4.0|
|7.||Water absorption by volume, %||1.5|
|8.||The adhesion of the coating to the steel, MPa||1.0|
|9.||The adhesion of the coating to the concrete, MPa||1.5|
|10.||The adhesion of the coating to the tree, MPa||1.2|
|11.||Resistance to climatic factors in the services is of the open atmosphere of the moderately cold climate, years||10|
|12.||The adhesion of the coating to the steel after exposure to climatic tests, MPa||1.0|
|13.||The life of the coating, not less than, years||10|
1. Paint-coating thermo-fire-weather-resistant, comprising a binder, which consists of the solutions of acrylic (co)polymers and/or silicone resins in an organic solvent, modifying additives in the form of a ceramic and/or glass beads with a size of 20-150 μm, a flame retardant additive and pigment, characterized in that the coating composition added an additional binder in the form of organic polyurethane filler selected from the group: micropollutant, kaolin, mikromramor, microslide and/or inert barite fillers in the following ratio of components:
|a flame retardant additive||10-20%|
2. Paint-coating according to claim 1, characterized in that the pigment used is titanium dioxide.
3. Paint-coating according to claim 1, characterized in that the flame retardant additive used compounds from the group of phosphorus-containing compounds, aluminum hydroxide or magnesium, zinc borate, melamine and pentaerythritol.
SUBSTANCE: described is a method of making chromate anticorrosive pigment involving suspension of spent chrome-aluminium catalyst in aqueous solution of calcium nitrate and barium nitrate, taken in amount of 10-30% and 5-25% of the mass of catalyst respectively, in mass ratio of catalyst to the said nitrates equal to 65-70:30-35 respectively, dehydration of the obtained mixture with subsequent calcination at 800-900°C for 3-6 hours and grinding. The obtained pigment has anticorrosive effectiveness which surpasses that of the closest analogue by 6-40% and has lower cost.
EFFECT: use of pigment in ground coating improves anticorrosive properties of the coating and increases environmental friendliness.
1 cl, 1 tbl, 15 ex
FIELD: construction industry.
SUBSTANCE: invention refers to corrosion-resistant filler on the basis of lignified wastes of plant raw material, which is included in lacquer coatings and used for protection of metal surfaces against corrosion. Filler includes base made from lignified wastes of plant raw material crushed till powder is obtained, and amine-bearing addition. As lignified wastes of plant raw material, there used are fruit kernels (apricots, peaches, cherries, plums) and/or shells of nuts (walnuts, almond nuts, pistaches, coconuts, pine nuts, peanuts) or their composition with kernels of berries (grape, pomegranate, cornel), which are crushed to 5-40 mcm particle size. As amine-bearing addition, there used is monoethanolamine or triethanolamine.
EFFECT: filler has high corrosion-resisting properties and properties of rust solvent.
7 cl, 3 tbl
SUBSTANCE: anticorrosion coating composition which can be used for protecting steel structures, objects and equipment from corrosion in atmospheric conditions and aqueous media, contains finely dispersed zinc powder, polystyrene and/or a copolymer of styrene with rubber, organic solvent and a rheological additive, and additionally a binder in form of a polyisocyanate prepolymer - aromatic polyisocyanate prepolymer based on diphenylmethanediisocyanate and moisture-absorbing additives. The finely dispersed zinc powder is obtained through physical vapour deposition. The moisture-absorbing additive used is tosylisocyanate and/or micronised highly porous crystalline aluminium silicat. The rheological additive used is bentonite or montmorillonite. The organic solvent used is a solvent of oil or xylene or butylacetate or methoxypropylacetate or white spirit or mixture thereof.
EFFECT: improved physical and mechanical and protective properties of the coating based on the composition, reduced presence of defects in the coating, reduced consumption of the composition, with preservation of protective properties, increased stability during storage and longer storage life.
8 cl, 4 tbl
FIELD: production processes.
SUBSTANCE: blemished surface is covered with polyester resins Derakane 8084 as primer coat, after drying surface is covered with at least two layers of powder-bonded glass-fiber mat and three layers of surface film as reinforcing layer, these layers are resinated by Derakane 411-350, rolled, after drying protecting cover as wax top coat based on isophthalic polyester is applied.
EFFECT: improvement of coating service life.
3 cl, 1 dwg
SUBSTANCE: described is a heat resistant coating composition containing the following, wt %: polyorganosiloxane resin - 20-25, pentaphthalic lacquer - 8-14, isobutylmethacrylate polymer - 5-7, heat resistant pigment - 11-17, filler - 5-10, rheological additive - 1-2, thickener - 1-2 and organic solvent - the rest. The composition contains porous silicate in form of pearlite or kieselguhr, and the heat resistant pigment is aluminium powder or heat resistant pigments of different colours.
EFFECT: increased sedimentation resistance during storage and provision for coating with high resistance to physical and chemical effects.
3 cl, 2 tbl, 15 ex
SUBSTANCE: invention relates to anticorrosion zinc-containing coating compositions for corrosion protection of steel structures, objects and equipment used in average- and highly aggressive media and can be used in industrial and civil engineering, shipbuilding, motor car construction and bridge building for protecting engineering and hydraulic engineering structures, industrial and power installations, equipment of chemical and petrochemical industry, port structures. The anticorrosion composition contains finely dispersed zinc powder, zinc oxide, binder in form of chlorinated rubber, modified with alkyd resin with acidity of not more than 20 mgKOH/g and plasticised with chlorinated paraffin wax in a medium of organic solvent and target additives in form of polymerised amphoteric oil, organophilic bentonite and graphite.
EFFECT: obtaining one-pack anticorrosion composition with good processing characteristics with longer protection of coatings in average- and highly aggressive media.
SUBSTANCE: invention relates to compositions for anticorrosion zinc-containing coating material of first coating, paint and enamel type for corrosion protection of steel structures, objects and equipment used in average- and highly aggressive media and can be used in industrial and civil engineering, shipbuilding, motor car construction and bridge building for protecting engineering and hydraulic engineering structures, industrial and power installations, equipment of chemical and petrochemical industry, port structures. The composition contains finely dispersed zinc power, binder in form of chlorinated rubber, epoxy resin, chlorinated paraffin wax and an organic solvent and target additives in form of polymerised amphoteric oil based on aromatic oil distillates, organophilic bentonite and additionally graphite.
EFFECT: obtaining one-pack anticorrosion composition with good processing characteristics with longer protection of coatings in average- and highly aggressive media.
SUBSTANCE: base coat contains chlorine-containing polymer, pigment, plasticiser, organic solvent and rust solvent. The base coat also contains a texturing agent, a dispersing agent and an imidazole derivative. The chlorine-containing polymer used is a vinylchloride copolymer and components are in the following ratio, wt %: vinylchloride copolymer 10-20; plasticiser 3-6; texturing agent 0.2-0.6; dispersing agent 0.2-0.6; pigment 10-25; modifier-rust solvent 5-10; imidazole derivative 0.2-3.0; organic solvent - the rest.
EFFECT: use of the invention allows for depositing a base coat on an unprepared surface in a wide temperature range.
12 cl, 2 tbl
SUBSTANCE: invention relates to a cold drying wear-resistant polymer composition, which can be used for protecting metal and concrete structures, for making floors and for other purposes. The composition contains the following components with their ratio given in pts. wt: 100 epoxy resin, 30.0 to 60.0 modifier, 40.0 to 80.0 flake reinforcement, 5.0 to 10.0 aerosil and/or 1.0 to 20.0 microtalc, 8.0 to 28.0 amine hardening agent. If necessary, the composition can contain a solvent in amount of up to 120 pts. wt. The modifier is butadiene-nitrile low-molecular rubber, or polysulphide rubber, or acrylic resin. The flake reinforcement is flaked silicon or iron mica. The amine hardening agent is a product of condensing N-methylol caprolactam with an aliphatic amine hardening agent, selected from a group which consists of diethylene triamine, triethylene tetraamine, polyethylene polyamine, or a mixture of the above mentioned product of condensing aliphatic amine, selected from a group which consists of diethylene triamine, tetraethylene tetraamine, polyethylene polyamine, and/or with organosilicon amine.
EFFECT: invention increases resistance to type B-3V synthetic oils, light resistance, adhesion to metal or concrete, elasticity, wear-resistance, hardness.
2 tbl, 11 ex
SUBSTANCE: invention relates to heat-insulating coatings. The anticorrosion and heat-insulating coating is made from a water-suspension composition with viscosity ranging from 1 to 100 Pa·s. The water-suspension composition contains a mixture of 5 to 95 vol. % polymer binder with 5 to 95 vol % hollow microspheres. The polymer binder is a water-emulsion polymer latex composition, which contains from 10 to 90 vol. % (co)polymer, selected from a group which includes acrylate homopolymer, styrene-acrylate copolymer, butadiene-styrene copolymer, polystyrene, butadiene polymer, polychlorovinyl polymer, polyurethane polymer, vinylacetate polymer or copolymer, or their mixture and from 10 to 90 vol % mixture of water and surface active substance. The hollow microspheres are in form of microspheres with different sizes from 10 to 500 micrometres and different packed density from 50 to 650 kg/m3, selected form a group which includes hollow glass microspheres, hollow ceramic microspheres, hollow polymer microspheres, hollow technogenic microspheres or their mixture. The water-suspension composition also contains a mixture of polyatomic alcohol with polybasic carboxylic or amino acid in equimolecular ratio.
EFFECT: longer service life of composition in harsh climatic and industrial conditions.
2 tbl, 1 ex
FIELD: chemical industry, paint-vehicle systems, in particular heat protective dyes.
SUBSTANCE: claimed dye contains ceramic and corundum microspheres; resins, selected from group including silicone resin, polyesterepoxy resin, acrylic resin dispersions as binder; pigment; and aluminum powder as deflector. Such composition provides reduced heat loss into environment. Obtained dyes have thermal gradient, improved heat-retention properties and strength, and useful in corrosion and heat-loss protection of building construction, transport, gas and oil lines, heating systems, etc.
EFFECT: easier method for dye production; strength and homogenous heat protective dye layer of improved adhesiveness.
2 cl, 3 tbl
FIELD: polymer materials and corrosion protection.
SUBSTANCE: invention relates to cold-drying anticorrosive coating compositions, which can be used in petroleum, gas, power, chemical, and other industries for protection surfaces of iron articles and structures. Composition of invention is based on binder, namely alkyd-styrene resin or poor alkyd resin in amount 11.0-44.0%. Composition further comprises 0.3-5.0% tannin or tannin derivatives as anticorrosive additive, 3.0-24.0% pigments, 5.0-22.-% fillers, and balancing amount of organic solvent.
EFFECT: enhanced protective properties.
4 cl, 2 tbl, 5 ex
FIELD: corrosion protection.
SUBSTANCE: protective ground paint for painting coiled metal and electrochemical protection of bridges, power lines, and other long term-use metallic structures contains, wt %: epoxide resin 9.0-29.0, polyamide resin 3.0-9.5, pigment 23.0-36.0, zinc nanoparticle preparation 3.0-5.0, filler 13.0-23.2, and solvent - the balance. Zinc nanoparticle preparation is introduced in the form of (0.4-4)x·10-3 M solution in isooctane.
EFFECT: enhanced protective properties.
2 tbl, 4 ex
FIELD: pipeline heat insulation in civil and industrial building.
SUBSTANCE: coating composition includes 5-95 vol.% of polymeric binder and 5-95 vol.% of hollow microspheres. At least one composition layer is coated onto substrate and dried. Said polymeric binder contains 10-90 % of (co)polymer selected from acrylate homopolymer, styrene-acrylate copolymer, butadiene-styrene copolymer, polyvinylchloride, polyurethane, vinylacetate polymer or copolymer or mixture thereof. Binder also contains 10-90 vol.% of water and surfactant mixture. hollow microspheres have particle size of 10-500 mum and bulk density of 50-650 kg/m3, and made from glass, ceramic, polymers, sol or mixture thereof.
EFFECT: improved corrosion resistance and heat insulation of coated substrate; increased adhesion properties.
5 cl, 1 tbl, 1 ex, 3 dwg
FIELD: organic chemistry, in particular composition for corrosive and chemically stable coats.
SUBSTANCE: invention relates to alkyd-epoxy undercoat compositions based on debris from phthalic anhydride and epoxy resin distillation. Claimed composition contains (mass %) epoxydianic resin 45.0-45.4; modified alkyd resin obtained by stepwise esterification of sun flower oil, polyhydric alcohol and slop from phthalic anhydride distillation with grain-size classification of 0.05-1.1 mm and phthalic anhydride content of 37-80 % - 36.0-36.3; filler 4.9-5.5; pigment 3.5-3.8; balance: solvent; and over 100 mass % of composition it contains polyethylene polyamine as curing agent 15, and cobalt naphthenate as curing catalyst 1.8. Composition of present invention is useful in coating of metal parts and various constructions.
EFFECT: undercoat composition of high corrosion resistance, strength and lower cost.
2 tbl, 1 ex
FIELD: building materials.
SUBSTANCE: invention relates to a method for preparing compositions used for covers, among them to corrosion-water-fuel-resistant covers by nonferrous metals, concrete and ceramics in moisture and aggressive media. The composition comprises the following mass ratio of the parent components, %: film-forming mixture comprising oligomeric carboxyl-containing butadiene-nitrile rubber, 10.9-28.1 and epoxy-diane oligomer, 7.0-10.9 in the mass ratio of epoxy-diane oligomer and rubber from 19.9:80.1 to 50.0:50.0; hardening agent, 5.9-18.1; solvent, 41.0-51.1; filling agent, 1.4-1.6, and pigment, 13.6-16.4. Film-forming agent is heated preliminary at temperature 90-120°C to the conversion degree of carboxyl groups 8.8-25.2%. Mixture of γ- and β-aminopropyltriethoxysilanes is used as a hardening agent in the mass ratio = (67-75):(25-33), or 45-55% solutions of products of hydrolytic condensation of mixture of γ- and β-aminopropyltriethoxysilanes in cyclohexanone or toluene. Invention provides enhancing the strength of cover in direct/reverse impact, adhesion in moisture media, resistance to defoliation in storage and bending, to reduce swelling capacity in water.
EFFECT: improved, enhanced and valuable properties of composition.
2 tbl, 4 ex
FIELD: composition materials.
SUBSTANCE: invention relates to a method for preparing the composition cover that can be used for recovery worn out article surfaces working under conditions of high compression loadings, bearing surface of lateral framework in loading truck car in zone of slipping aperture. Method involves mixing the polymerizing epoxy composition and metallic dispersed filling agent in the ratio = (1:6)-(1:9) mas. p. p. Mixing is carried out at effect in increasing pressure in auger mixer with alternate step being each the following auger step differs from previous step by the constant value. Then the prepared composition is applied on metallic surface and kept its at the polymerization temperature up to finishing the solidification process. Composition based on epoxy resin ED-16, ED-20 with latent hardening agent dicyandiamide is used as epoxy composition. Iron powder PZH-4, iron-base powder PS 27-M, iron-base PG-USCH-35, nickel-base powder PG-SP2-M are used as a metallic dispersed filling agent. Invention provides enhancing the specific compression loading value.
EFFECT: improved method for preparing, valuable properties of cover.
5 cl, 1 tbl, 1 dwg, 6 ex
FIELD: metal-protecting materials.
SUBSTANCE: invention relates to protection of metals against corrosion using paint and varnish coatings. Invention proposes using as anticorrosive pigments co-precipitated manganite-phosphates, manganite-silicates, manganite-sulfates of metals of the general formula: MMnOxnMZ wherein M means Ca2+, Zn2+, Fe2+, Sr2+ at Z - PO4 3-, SiO3 2-, and M means Ba2+ at Z - SO4 2-, PO4 3-, SiO3 2-; x = 2.5-3; n = 0.5-10 with the content of co-precipitated manganite of corresponding metal from 5 to 70 wt.-% as anticorrosive pigments. Proposed pigments by their anticorrosive properties exceed that of zinc tetraoxychromate. Invention provides applying low toxic anticorrosive pigment-inhibitors with protective properties comparable with that of chromate pigments.
EFFECT: expanded assortment of anticorrosive pigments.
FIELD: polymeric protective coatings.
SUBSTANCE: invention relates to compositions forming anticorrosive coatings on reinforced concrete, concrete, and bricks and which, in particular, can be employed for anticorrosive protection of concrete floors, large-size metallic containers, pipelines, brick basements, bottoms, cattle-breeding farms, open-type swimming pools, and also air conduits, piping, and other metallic structures in industrial buildings, and near production enterprises producing corrosive emissions into atmosphere. Coating according to invention is composed by copolymer obtained via copolymerization of vinyl ether with methyl methacrylate at weight ratio (3-6):1 in presence of azo-bis-isobutyronitrile followed by dissolution of copolymer in toluene. Vaporization of the latter leaves film protecting surface from destruction.
EFFECT: enhanced protection efficiency.
FIELD: paint and varnish materials.
SUBSTANCE: invention relates to priming aqueous-dispersion compositions designated for protection metallic surfaces against corrosion in exploitation both under atmosphere conditions and subjected for effect of different liquids. Invention proposes anti-corrosive aqueous-dispersion priming-enamel comprising the following components, wt.-%: styrene-acrylic dispersion as a binding agent, 30-50; calcium molybdate phosphate as an anti-corrosive pigment in the following ratio of molybdate and phosphate ions from 1:0.01 to 1:100; color-forming pigment, 1-10; phosphate dispersing agent, 0.1-10; thickening agent, 0.05-0.2, and water, the balance. Applying calcium molybdate phosphate in priming-enamels provides the passivating activity in interaction 0f phosphate-molybdate ions with metallic backing of both ferrous and nonferrous metals and exhibits the additional protecting effect.
EFFECT: improved and valuable properties of compositions.