Composition for anti-corrosion coatings
(57) Abstract:The invention relates to compositions for anti-corrosion coatings with the use of a copolymer on the basis of the bottoms of the distillation of styrene copolymer KORS), and is intended primarily for the protection of metal (including steel) structures operated at the temperature of the metal surface to +150oC. the Composition comprises, in wt.%: the copolymer based on the bottoms of the distillation of styrene 8 - 11; polyvinyl chloride 11 - 13, cyclohexanone 27 - 29; polystyrene 4 - 6; sesquioxide antimony 4 - 6; filling 8 - 10; pigment 5 - 7; xylene - rest. At relatively small cost of coverage not less than 1.5 times smaller than those currently used for the same purpose coatings with the same properties, the proposed coating keeps unchanged appearance and protective properties for a very long time by providing components of the barrier and adhesion mechanism of the protective action of the coating in the presence of a temperature stabilizer. 3 table. The invention relates to compositions for anti-corrosion coatings with the use of a copolymer on the basis of the bottoms of the distillation of styrene copolymer KORS) and the temperature of the metal surfaces to +150oC.Known composition for corrosion-resistant coating comprising a copolymer based on a bottoms distillation styrene copolymer KORS) as a foaming agent, policrystalline, plasticizer, asbestos as filler, xylene as the organic solvent /1/.Coatings based on this composition have a relatively small value, the upper limit of the temperature range of application until the surface temperature of +70oC.Known composition for corrosion-resistant coating comprising a copolymer based on a bottoms distillation styrene copolymer KORS) as a foaming agent, plasticizer, asbestos as filler, xylene as the organic solvent, the copolymer based on oligomers of butadiene with methyl methacrylate /2/.The disadvantage is that at relatively small cost of the coverage it has an upper limit of the range of application to surface temperature +70oC.Closest to the technical essence, adopted as a prototype, is a composition for corrosion-resistant coating comprising a copolymer on the basis of the bottoms reflectivities and polymerized unsaturated compounds pyrolysis liquid and gaseous petroleum fraction C8-C9-resin SPP 9-14 /3/.The advantage of the composition is relatively low cost coverage. The disadvantage is that the coating has the upper limit of the temperature range of application until the surface temperature of +70oC.The task, which directed the claimed invention is to provide a composition that provides the extended temperature range of application of the coating to the surface temperature of +150oC while keeping costs low in comparison with the currently used compositions for coatings with similar properties.The problem is solved as follows. According to the claimed invention, the composition for corrosion-resistant coating comprising a copolymer on the basis of the bottoms of the distillation of styrene, xylene, pigment, filler, has a distinctive essential features in the new essential features, namely the composition further comprises polyvinyl chloride, cyclohexanone, polystyrene and sesquioxide antimony in the following ratio, wt.The copolymer based on the bottoms of the distillation of styrene 8-11
Polyvinyl chloride 11-13
Cyclohexa the aspects of
Polyvinyl chloride which introduced the solvent is cyclohexanone) and polystyrene in the presence contained in the coating sesquioxide antimony provide confident at temperatures up to +150oC predominantly barrier mechanism of the protective action of the coating, and the adhesion mechanism of the protective action of the coating at temperatures up to +150oC in the presence of sesquioxide antimony provides mainly the copolymer based on the bottoms of the distillation of styrene, thus, the proposed floor have a mixed mechanism of the protective action, gives the greatest and long-term protective effect, while a small value of the coating, not less than 1.5 times smaller than those currently used for the same purpose coatings with the same properties.As a copolymer on the basis of the bottoms of the distillation of styrene using a polymerization product of a joint VAT residue of the distillation of styrene with acid anhydrides (maleic anhydride) (GOST 11153-75).Polyvinyl chloride product of the radical-chain polymerization of vinyl chloride with a degree of polymerization of 100-2500, the composition may be used polyvinyl chloride PVC-66026 (HOST-78).Cyclo is>/P>The polystyrene polymer, a polymerization product of styrene (GOST 20289-84).Sesquioxide antimony (TL6-09-32-67-84) is known as thermo stabilizer of plastics.As filler can be used talc powder for paint industry (TU 21-25-201-77), mica Muscovite ground (GOST 855-74).As the pigment may be used titanium dioxide pigment (TU 6-10-1650-85), zinc (GOST 202-84), red iron oxide (GOST 8135-74), pigment yellow zheleznodorolny (GOST 18172-72), pigment red zheleznodorolny (TU 6-10-602-74).Xylene oil (GOST 9410-78) an organic solvent.The composition for anti-corrosion coatings are produced by first the formation of two solutions: first, taken in prescription quantities of powdered polyvinyl chloride prescription number cyclohexanone, second, taken in prescription quantities of granulated polystyrene prescription number of xylene, and then mix these solutions simultaneously with the copolymer based on the bottoms of the distillation of styrene, taken in prescription number, until a homogeneous film-forming base composition, and then mixed with prescription courney mill to the required milling degree, then filtered and poured into containers.The surface composition is applied by brush, spray gun or roller.The tests were carried out as follows.For definitions of indicators: the appearance of the film, elasticity, adhesion, hardness of the coating film and the heat resistance of the film at a temperature of +150oC preparation of test samples for the tests were carried out according to GOST 8832-76. On the steel samples of low carbon steel Art.3 sizes HH,8 mm using the paint was applied the following compositions: known composition prototype options and composition the proposed composition, in a single layer, followed by drying for 2 hours at 60-65oC. the film Thickness after drying was 30 μm.The appearance was determined after cooling visually with diffused light. The definition of the elasticity of the film produced according to GOST 6806-78, the diameter of the rod on a scale of flexibility 1 mm, the hardness of the films produced according to GOST 5233-89 on a glass plate. Determination of adhesion was carried out according to GOST 15140-78.The heat resistance of the coating film at a temperature of +150oC was determined by placing the plate with the applied and dried coating to thermostat, having the temperature and examined in daylight.The invention is illustrated by the following examples of specific performance (see table. 1) and a performance test (see tab. 2) appearance of the coating film, elasticity, adhesion, hardness. The indicators in testing resistance of the coating film at a temperature of -150oC are given in table. 3.The sources of information.1. USSR author's certificate N 905245, M CL C 09 D 5/08, C 09 D 3/733, publ. 15.02.82, bull. N 6.2. USSR author's certificate N 1502593, M CL C 09 D 5/08, publ. 23.08.89, bull. N 31.3. USSR author's certificate N 1726485, M CL C 09 D 5/28, CD 4 41/61 B, publ. 15.04.92. bull. N 14 (prototype). Composition for corrosion-resistant coating comprising a copolymer on the basis of the bottoms of the distillation of styrene, xylene, filler, pigment, characterized in that it further contains polyvinyl chloride, cyclohexanone, polystyrene and sesquioxide antimony in the following ratio, wt.The copolymer based on the bottoms of the distillation of styrene 8 11
Polyvinyl chloride 11 13
Cyclohexanone 27 29
Polystyrene 4 6
Sesquioxide antimony 4 6
A filler 8 10
Pigment 5 7
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.