Composition for anticorrosion coating

FIELD: composition for corrosion protection of basic constructional materials (steel, concrete).

SUBSTANCE: claimed composition contains (mass %): polymeric film-forming substance 40-52; natural fine-grain iron alpha-oxide 11-27; organosilicon curing agent 1`2-17; thiocol 7-10; synthetic silica 3-5; strontium chromate 7-9. Solution of epoxy resin in xylene and acetone is used as polymeric film-forming substance. Natural fine-grain iron alpha-oxide contains (mass %): silica, aluminum oxide, magnesium oxide, and calcium oxide not more than 2.5; 1.8, 0.2, and 0.3, respectively and Fe2O3 85-95 %. As organosilicon curing agent organosilicon amine derivatives are used.

EFFECT: coating of increased fuel resistant and durability in high aggressive medium, containing, in particular, fuel with water impurity.

2 tbl, 6 ex

 

The invention relates to the field of corrosion protection of the main structural materials /steel concrete/ and can be used for corrosion protection of the internal and external surfaces of the fuel tanks and pipelines operating in the environment of fuel mixed with water.

Known composition for anti-corrosion coatings, including epoxy resin, solvent and pigments, which are used aluminum or zinc powder /V. Protasov. Efficacy of anti-corrosive coatings for oilfield equipment. M: VNIIEM. - 1984, - p.44-45/.

Improving the corrosion resistance of coatings based on such compositions as compared to clean paintwork materials due to the increased resistance of the composition to the combined effects of different corrosion factors /oxidation, photolysis, electrochemical processes, and alternating dynamic loads products/. Protective protective effect /zinc, aluminum/ pigments reduces the rate of corrosion even in aggressive environments.

However, the resistance of the coatings of such compositions to certain types of corrosion /abrasion, pitting, cavitation/ limited. Another disadvantage is the emission in reactions with aggressive acidic and alkaline environments, loosening the coating structure and dramatically worsen the th protective properties.

Also known composition for corrosion-resistant coating comprising a polymeric film-forming substance, which is applied epoxy resin, and silicone hardener /SGC L.G. and other Amoxicillinpurchase enamel with increased weathering. Coating materials and their application. - 1995. - No. 3-4, - pp.33-34/.

This composition compared to above has a higher strength and adhesion to metal. However, the durability of the coating under conditions of a complex corrosive factors small /7-8 years/.

Closest to the invention to the technical essence is a composition for corrosion-resistant coating, comprising a polymer plenkoobrazuyushchie substance, which used a solution of epoxy resin e-41 in xylene and acetone, Thiokol, a kind of natural, fine-flaked alpha-iron oxide - specularite Altai Deposit Ore Log" containing oxides of silicon, aluminum, magnesium and calcium, respectively, not more than 2.5; 1,8; 0.2 and 0.3% and a high content of alpha-iron oxide - Fe2About390-95% and 12-16% silicone hardener ASOT-2 /patent RU 2174136, C 09 D 5/08, 2001 - prototype/.

The disadvantage of this arrangement is that it does not provide the desired durability of the corrosion protection of the fuel tanks, work is in their environment fuel with impurities of water. In addition, it only provides a multilayer coating. This leads to a significant increase in the time of coating, as well as to increased losses of the composition, especially when applying the corrosion-resistant coating on the internal surface of pipelines and tanks.

The objective of this invention is to increase teplostoykost and durability of the protection cover in very corroded conditions.

The technical result is an increase in teplostoykost and durability of the coating in very corroded conditions.

The technical result is achieved by the fact that the known composition for corrosion-resistant coating comprising a polymeric film-forming substance, which is applied to the solution of epoxy resin e-41 in xylene and acetone, Thiokol, a kind of natural, fine-flaked alpha-iron oxide - specularite Altai Deposit Ore Log" containing oxides of silicon, aluminum, magnesium and calcium, respectively, not more than 2.5; 1,8; 0.2 and 0.3% and a high content of alpha-iron oxide - Fe2About3and derived organosilicon amines ASOT-2 as a silicone curing agent contains specularite with alpha iron oxide in it 85-95%, and optionally the composition comprises a synthetic silica is Aerosil A-175 and strontium chromowane the ly, in the following ratio, wt.%:

a solution of epoxy resin e-41 in xylene and acetone40-52
the above type of natural
fine-flaked alpha-iron oxide11-27
the above organosilicon compound of ASOT-212-17
Thiokol7-10
synthetic silica is Aerosil A-1753-5
strontium chronologicly7-9

The essence of the invention lies in the fact that adding to the composition additionally strontium hromovokislyj and Aerosil a-175 in a given percentage increases toplevelname and improves anti-corrosion coating strength in very corroded environments and provides corrosion protection equipment one layer.

For the preparation of anticorrosive composition use solution of epoxy resin e-41 /TU 6-10-507-76/ and silicone hardener ASOT-2 /TU 6-02-1250-83/. E-41 - solution in xylene and acetone. The hardener is ASOT-2 is derived organosilicon amines /50%solution in cyclohexanone/.

As specularite use a variety of natural, fine-flaked alpha-OK the IDA iron Altai Deposit Ore Log" with a low content of oxides of silicon, aluminum, magnesium and calcium and a high content of iron oxide. The chemical composition of this specularite characterized by the following data: the contents of the oxides of silicon, aluminum, magnesium and calcium, respectively, not more than 2.5; 1,8; 0.2 and 0.3% and a content of iron oxide Fe2About3- 85-95%. Crushing specularite - 63 µm /residue on the sieve with openings 63 microns less than 2.0 wt.%/.

As Thiokol apply liquid teocoli, such as Thiokol mark 1, which is a polysulfide polymer viscosity at 25°20,0 PA·with mass fractions of SH-groups of 2.6%, viability 54 /GOST 12812-80/. Teocoli used to improve the elasticity of the coating.

Strontium chronologicly /TU 48-4-239-82/ - pigment lemon yellow, the mass fraction of strontium hromovokislyj not less than 97%, mass fraction of residue after wet prosave on sieve No. 0045 not more than 43%. Advantage - low reactivity and lack of crystalline water.

Used synthetic silica is Aerosil A-175 /GOST 14922-77/ is a powder with a high specific surface area /175±20 m2/g/, has thixotropic properties. Characterized by an exceptionally high degree of dispersion, particle size of from 0.15 to 0.02 μm. When the dispersion in the environment, wetting only part of their surface, they form a volumetric coagulation the s grid. These grids include particles of pigments and prevent their deposition, increase the viscosity of the disperse medium. Mass fraction of the main substances SiO299,8%. Mass fraction of moisture not more than 2%.

The composition is prepared by mixing in a mechanical mixer in the estimated quantities of a solution of epoxy resin e-41, specularite, Thiokol, Aerosil and strontium hromovokislyj for 10-15 min at room temperature. Then add silicone hardener ASOT-2 and the composition additionally stirred for 10-15 minutes

The composition is applied to the surface of the product after its preparation method of the pneumatic spraying Shirokogorov paint sprayer or a brush in the form of a single layer of a thickness of 200-300 μm.

The invention is illustrated by the following examples: composition of the coating are shown in table 1, the main characteristics of the coatings in table 2.

From table 2 it follows that the compositions of examples 2-4 create agnoloni coating with high teplostoykost in the fuel mix with water and added durability to 15-20 years).

These results are based on the input into the composition additionally synthetic silica is Aerosil a-175 and strontium hromovokislyj and select the appropriate components. Add in the known composition of strontium hromovokislyj and Aerosil a-175 to property the x leads, besides reducing the number of layers, to increase the content of non-volatiles /64%/ and consequently to the reduction of the porosity of the coating, which leads to increased resistance single-layer coverage when operating it in a very corroded environments. Aerosil A-175 prevents the deposition of particles specularite.

Viscosity of the composition without hardener/ determined by viscometer B3-246 with the nozzle diameter of 4 mm at a temperature of 20±5°GOST 8420. Water and heat resistance of the coatings is determined according to GOST 21513. Mass fraction of non-volatiles determined according to GOST 17537. The strength of the film at impact is determined by THE device 1A according to GOST 4765. The elasticity of the film at the bend defined by GOST 6806. Adhesion of the film is determined according to GOST 15140. The durability of the coating on the basis of the proposed compositions is confirmed by the operation of the tanks for fuel and oil in corrosionresisting environments /environment fuel mixed with water/.

Thus, the input in anticorrosive composition additionally two components: Aerosil a-175 and strontium hromovokislyj and selected percentage of them provide increased teplostoykost cover in very corroded conditions and increase the effectiveness of the composition.

Table 1

The comp is stand cover
ComponentsContent, wt.%The placeholder
Examples
12345
A solution of epoxy resin e-41 in acetone and xylene525245403647
Silicone ommercially ASOT-2181714121014
Variation of natural fine-flaked alpha-iron oxide101120273030
Synthetic silica Aerosil A-17523458-
Strontium chronologicly678910-
Thiokol mark 112109769

Table 2

The main characteristics of the composition and coating
Indicators ExamplesThe placeholder
12345
Viscosity of the composition without hardener/,304050607520
The strength of the film when hit, j555535
The elasticity of the film bending, mm6555105
Teplostoykost /expansion in the fuel for 30 days/, %1,00,50,50,51,01,0
Adhesion after aging for 1000 h in water/score
at 20°111121
at 60°111121
The number of layers1111-2-3
The thickness of pokr is ment, mcm100200250300350150-200
The durability of the coating, years8-1015-20-8-10

Composition for corrosion-resistant coating comprising a polymeric film-forming substance, which is applied to the solution of epoxy resin e-41 in xylene and acetone, Thiokol, a kind of natural, fine-flaked alpha-iron oxide - specularite Altai Deposit Ore Log" containing oxides of silicon, aluminum, magnesium and calcium, respectively, not more than 2.5; 1,8; 0.2 and 0.3% and a high content of alpha-iron oxide - Fe2About3derived organosilicon amines ASOT-2 as a silicone curing agent, characterized in that it contains specularite with alpha iron oxide in it 85-95%, and optionally the composition comprises a synthetic silica is Aerosil A-175 and strontium gramaticly, in the following ratio, wt.%:

A solution of epoxy resin e-41 in xylene and acetone40-52
The above type of natural
fine-flaked alpha-iron oxide1-27
The above organosilicon ommercially ASOT-212-17
Thiokol7-10
Synthetic silica is Aerosil A-1753-5
Strontium chronologicly7-9



 

Same patents:

FIELD: composition for corrosion protection of basic constructional materials (steel, concrete).

SUBSTANCE: according to the first variant claimed composition contains (mass %): epoxyorganosilicon oligomer as polymeric film-forming substance 16.0-18.0; butadieneacrylonitrile carboxylate rubber 34.0-36.0; natural fine-grain iron alpha-oxide 24.0-27.0; organosilicon curing agent such as organosilicon amine derivative 12.0-15.0; xylene as solvent 3.3-5.0; microtalc (talcone) 3.0-4.0; synthetic silica 0.7-1.0. Natural fine-grain iron alpha-oxide has low content of silica, aluminum oxide, magnesium oxide, and calcium oxide and not less than 60 mass % of Fe2O3. According to the second variant claimed composition contains (mass %): epoxydianic resin as polymeric film-forming substance 14.0-16.0; butadieneacrylonitrile carboxylate rubber 29.0-31.0; natural fine-grain iron alpha-oxide 21.0-31.0; organosilicon curing agent such as organosilicon amine derivative 24.0-25.3; xylene as solvent 3.0-4.0; microtalc (talcone) 3.0-4.0; synthetic silica 0.7-1.0.

EFFECT: composition with increased content of non-volatile components; coating with increased thickness of single layer.

2 cl, 4 tbl, 12 ex

FIELD: corrosion protection.

SUBSTANCE: invention relates to anticorrosion compositions for metallic parts, in particular to utilization of MoO3 as agent enhancing anticorrosive properties of composition for anticorrosion coating based on dispersed metal, containing zinc of zinc alloy in aqueous phase (30-60% water in dispersion) and containing binding agent. Compositions for anticorrosion coating of metallic parts are disclosed containing such corrosion inhibitor (MoO3); at least one dispersed metal selected from group composed of zinc, aluminum, chromium, manganese, nickel, titanium, and alloys thereof; organic solvent; thickening agent; silane-based binder; optionally sodium, potassium, or lithium silicate; and water in amount from 30 to 60% by weight. Disclosed are also anticorrosion coating and metallic substrate with deposited anticorrosion coating prepared from above-defined composition.

EFFECT: improved resistance of composition to salt fog action.

22 cl, 2 dwg, 6 tbl, 3 ex

FIELD: chemistry of polymers.

SUBSTANCE: invention relates to using polyurethane reactive bicomponent solvent-free composites used for preparing thermostable at temperature below 90°C and compatible with cathode protecting covers. The composite comprises the following components: (A) solvent-free polyhydroxy-component consisting of (A1) 40-100 weight % of simple polyetherpolyol with functionality index ≥ 3.5 and molecular mass 280-1000 Da, or a mixture of some such components, and also (A2) 0-60 weight % of simple polyetherpolyacrylate with from 5.0 to 15 weight % of hydroxyl groups and viscosity index from 300 to 5000 mPa x s at 23°C, and also (A3) 0-60 weight % of other hydroxyl-containing groups of compounds of molecular mass from 32 to 1000 Da and wherein the weight % sum (A1)-(A3) is 100% always, and (B) polyisocyanate component consisting of at least one organic polyisocyanate wherein the equivalent ratio NCO : OH is in the range from 0.8:1 to 1.5:1. Invention provides preparing covers with high permissible prolonged temperature loading below 90°C for protection against corrosion in simultaneous compatibility with cathode protection.

EFFECT: improved and valuable properties of systems.

74 cl, 1 tbl

Polymer composition // 2277561

FIELD: polymer materials.

SUBSTANCE: invention concerns polymer composition providing reliability and long period of running repaired sections of pipelines comparable to those in defectless pipelines. Composition is constituted by, wt parts: epoxide dian resin 100; aliphatic epoxide resin 35-75; oligoether-cyclocarbonates with weight portion of cyclocarbonate groups 18 to 29, 5-40; powder filler 40-200, amine hardener 55-90, and plasticizer 7-30, said powder filler being a mixture of mineral silicate-containing powders with metallic powders at ratio between 100:4 and 100:20 and said amine hardener being a mixture of (A) and (E) products at ratio between 80:20 and 60:40. Product (A) is prepared by reacting amine (B) with salicylic acid (B) and plasticizer (D), which is oxygen-containing compound from polyol group, weight ratio (B):(C):(D) ranging from 72:1.5:26.5 to 40;9;51. Product (E) is prepared via condensation of phenol, formaldehyde, and aliphatic amine. Invention improves physico-mechanical properties of polymer composition cured at temperatures 4-5°C and 20°C such as bend strength, tensile strength, and elongation, increases adhesion for steel, reduces shrinkage, viscosity, and temperature of exothermic reaction, and also increases time of the beginning of exothermic reaction.

EFFECT: improved performance characteristics of polymer composition.

2 tbl, 9 ex

FIELD: corrosion protection.

SUBSTANCE: invention is designed for use in oil and gas industry, mechanical engineering, in particular to protect internal surfaces of steel fuel tanks and mains, wherein all kinds of petroleum products or various organic solvents can be present. Composition contains 55-35 vol % pre-polymerized polyurethane based on tolylenediisocyanate and diethylene glycol, 35-55 vol % polytrifluorochloroethylene, and 5-10 vol % aluminum powder with particle size no larger than 20 μm.

EFFECT: achieved heat resistance of anticorrosive coating within a working temperature range ±50°C and protective properties of coating when surfaces are treated with steam at 150°C and pressure up to 6 atm.

2 ex

FIELD: polymers, anticorrosive materials.

SUBSTANCE: invention relates to polymeric compositions used for protection against corrosion. Polymeric composition comprises epoxidated rubber or dimethylsiloxane rubber as a polymeric binding agent, polyamide resin or polymethylsilazane as a nitrogen-containing hardening agent, talc or mica as a filling agent, aerosil as a thixotropic additive and electrolytic nickel powder or powder of the alloy system Al-Fe-Cu as a current-conducting additive. The composition can comprise additionally epoxy resin in the amount 10-20 mass. p. Invention provides preparing the composition showing high protective properties in all-climate conditions that allows increasing exploitation period of articles. Invention can be used for filling the internal lap cavity (before welding) formed in the pointed arc welding of metals and alloys.

EFFECT: improved and valuable properties of composition.

7 cl, 2 tbl

FIELD: protective coatings.

SUBSTANCE: invention relates to chemical engineering processes, in particular to solve problem of protecting metallic equipment against operation deposits of solid and viscous products. Coating is constituted by adhesive primer deposited on metallic surface of process equipment and 3-4-layered coating made from powdered polytetrafluoroethylene or polytrifluorochloroethylene dried to moisture content not higher than 3% and stabilized in acetylene medium by moistening polymer powder with Diaphene HH stabilizer in acetone solution at 40°C, followed by drying polymer/stabilizer mixture at ambient temperature, finally drying at 80-100°C for 5 h, calcination at 210°C for 1 h, and ageing at 220-230°C for 5-6 h. Formation of polymer comprises applying polymer onto metallic surface of process equipment preliminarily thoroughly cleaned via shot blasting treatment, flattened, degreased, heated, and hardened. Inhibiting coating is made from powdered polytetrafluoroethylene or polytrifluorochloroethylene stabilized by afore-indicated way, dried to moisture content not higher than 3% and applied in 3-4 layers onto adhesive primer in electrostatic field and finally held for 5-6 h at 220-230°C.

EFFECT: prolonged lifetime of coating and prevented working surfaces of process equipment from formation of deposits.

3 cl, 2 ex

FIELD: building materials.

SUBSTANCE: invention relates to a method for preparing an aqueous epoxide corrosion-stable priming used for protection against corrosion and no containing hexavalent chrome compounds. Priming comprises aqueous epoxide compound based on bisphenol A diglycidyl ester, hardening agent and chromate-free pigment inhibiting corrosion. Hardening agent is taken among the group comprising aqueous modified adducts of amines or polyamidoamines decreasing the water content. Chromate-free pigment inhibiting corrosion comprises chromate-free pigment additive inhibiting corrosion that is taken among the group comprising mixtures of cerium molybdate with bismuth vanadate, cerium molybdate with strontium tungstate, cerium phosphate with strontium tungstate, bismuth vanadate with bismuth molybdate and strontium tungstate, and their mixtures also. Pigment-filling agents and hydrophobic hardening agent are added to the priming composite for enhancing waterproofness and corrosion resistance. Invention provides excluding the negative effect of hexavalent chrome on environment objects and human body.

EFFECT: improved and valuable properties of priming.

4 ex

FIELD: protective coatings.

SUBSTANCE: invention aim is preparation of coatings providing long-term protection of chemical shop equipment under alternate alkali and acid solution action conditions. Protection of equipment, according to invention, is provided by polysulfide sealant having prolonged durability owing to lowered permeability and swelling ability of cured coating material on contact with water and aqueous acid and alkali solutions. Coating is formed by consecutively depositing curable primer and transition adhesive layer onto cleaned metal followed by layer-by-layer application and curing of polysulfide sealant. On the surface of cured coating, additional anti-diffusion polymeric layer based on chlorinated polyvinylchloride resin is formed.

EFFECT: achieved long-term protection of equipment.

FIELD: polymeric materials.

SUBSTANCE: abrasive-resistant composition material is made of composition comprising the following ratio of components, wt.-%: functional additives, 40-45; thermoplastic modifying agent, 28.14-43.5; hardening agent, 1-2; epoxy resin E-41, E-41r, the balance. Mixture of thermoplastic chlorine-containing modifying agent - perchlorovinyl resin and thermoplastic polymer taken in the ratio = (1:0.5)-(1:0.005) is used as a thermoplastic modifying agent. Thermoplastic polymer is taken among the following group: polystyrene, acryl-butadiene-styrene plastic, polyamide, polyethylene, polypropylene, copolymer of ethylene and vinyl acetate. Invention provides enhancing the adhesion strength and stability to abrasive wearing, among them, in effect of sign-variable and impact loadings and vibrations. Invention can be used in machine engineering for making functional coverings preventing wear of articles, constructions or aggregates as result of effect of abrasive and corrosive media, impact loadings and vibrations.

EFFECT: improved and valuable properties of material.

2 tbl, 13 ex

FIELD: special compositions.

SUBSTANCE: invention relates to a method for preparing an aqueous bicomponent joining composition as a cover or adhesive for different backings, such as aluminum, steel, galvanic steel, copper, zinc, magnesium and their alloys, and can be used in automobile industry for external finishing large means of transportations. The composition comprises an aqueous dispersion of at least partially neutralized polymer representing a derivative of amino-functional epoxide and organic compound comprising at least two acetoacetate groups or acetoacetamide groups or combination of two groups. Invention provides preparing covers showing high polish, good waterproofing and resistance to solvents, high hardness and adhesives of high adhesive strength.

EFFECT: improved and valuable properties of composition.

27 cl, 51 ex

Epoxide composition // 2280053

FIELD: coating compositions.

SUBSTANCE: invention relates to a method for preparing composition used for paint and varnish coatings. The composition comprises the components taken in the following ratio, mas. p. p.: epoxy diane oligomer, 50; amine hardening agent, 5.9-11; xylene, 25; butyl acetate, 10; acetone, 15; polyfluorinated alcohol-telomer of the formula: H(CF2CF2)nCH2OH wherein n = 3, 10-15. Low-molecular epoxy diane oligomer of molecular mass 400 Da, not above, and with epoxide number 21-22% is used as epoxy diane oligomer. Invention provides enhancing adhesion, hardness, impact resistance and diminishing water absorption of coatings. Proposed composition can be used in making pouring floors, pouring compounds and for other aims.

EFFECT: improved and valuable properties of composition.

2 tbl, 14 ex

Polymer composition // 2277567

FIELD: polymer materials.

SUBSTANCE: polymer composition for varnishes, adhesives, and coatings is constituted by, weight parts: epoxide dian resin ED-2, 100; maleic anhydride as hardener, 40-80; oil slime as modifier, 10-30; and aniline bottom waste with aniline content 15-18 wt parts, 1-3. Oil slime is composed of hydrocarbon fractions with boiling temperature from 293 to 470°C.

EFFECT: reduced water content and curing time of polymer composition.

1 tbl, 6 ex

FIELD: building materials.

SUBSTANCE: invention relates to a method for preparing an aqueous epoxide corrosion-stable priming used for protection against corrosion and no containing hexavalent chrome compounds. Priming comprises aqueous epoxide compound based on bisphenol A diglycidyl ester, hardening agent and chromate-free pigment inhibiting corrosion. Hardening agent is taken among the group comprising aqueous modified adducts of amines or polyamidoamines decreasing the water content. Chromate-free pigment inhibiting corrosion comprises chromate-free pigment additive inhibiting corrosion that is taken among the group comprising mixtures of cerium molybdate with bismuth vanadate, cerium molybdate with strontium tungstate, cerium phosphate with strontium tungstate, bismuth vanadate with bismuth molybdate and strontium tungstate, and their mixtures also. Pigment-filling agents and hydrophobic hardening agent are added to the priming composite for enhancing waterproofness and corrosion resistance. Invention provides excluding the negative effect of hexavalent chrome on environment objects and human body.

EFFECT: improved and valuable properties of priming.

4 ex

FIELD: polymeric materials.

SUBSTANCE: abrasive-resistant composition material is made of composition comprising the following ratio of components, wt.-%: functional additives, 40-45; thermoplastic modifying agent, 28.14-43.5; hardening agent, 1-2; epoxy resin E-41, E-41r, the balance. Mixture of thermoplastic chlorine-containing modifying agent - perchlorovinyl resin and thermoplastic polymer taken in the ratio = (1:0.5)-(1:0.005) is used as a thermoplastic modifying agent. Thermoplastic polymer is taken among the following group: polystyrene, acryl-butadiene-styrene plastic, polyamide, polyethylene, polypropylene, copolymer of ethylene and vinyl acetate. Invention provides enhancing the adhesion strength and stability to abrasive wearing, among them, in effect of sign-variable and impact loadings and vibrations. Invention can be used in machine engineering for making functional coverings preventing wear of articles, constructions or aggregates as result of effect of abrasive and corrosive media, impact loadings and vibrations.

EFFECT: improved and valuable properties of material.

2 tbl, 13 ex

FIELD: building materials.

SUBSTANCE: invention relates to a method for preparing the coating composition based on modified epoxy resin used in protection of building constructions, for example, as a component for pouring floorings. The composition comprises the following ratio of components, wt.-%: epoxy diane resin, 55.0-63.0; amine hardening agent as a mixture of isophoronediamine, 13.0-20.3, and one of amine taken among methaxilylenediamine, 7.0-9.0, or diethylenetriamine, 5.0-6.0, or triethylenetetraamine, 5.5-6.5 and tris-(dimethylaminomethyl)phenol, 2.0-2.7, as adduct with laprolat-803, 6.5-10.5, and mixture of dioxane alcohols and their high-molecular esters (EDOS). Laprolat-803 represents polyoxypropylenetriol tricyclocarbonate propyl ester. Invention provides hardness and wear-resistance of coating.

EFFECT: improved and valuable properties of composition.

2 tbl, 7 ex

FIELD: polymers.

SUBSTANCE: invention relates to a method for preparing abrasion-resistant protective polymeric composition. The composition comprises the following components, mas. p. p.: epoxydiane resin, 100; modifying agent, 30-60; organosilicon amine hardening agent, 10-20; scaly filling agent, 40-80; aerosil and/or microtalc, 10-20 as a finely divided filling agent. Resins ED-18, ED-20 and E-41 are used as epoxydiane resin. Low-molecular butadiene-nitrile rubber or polysulfide rubber, or acrylic resin is used as a modifying agent. Organosilicon amine hardening agent represents aminosilane or aminosiloxane that is used in common with polyethylene polyamine in their mass ratio = 1:1. The condensation product of polyethylene polyamine with trimerized fatty acid from flax or tall oil can be added to the hardening agent composition. Scaly silicon representing waste in manufacture of crystalline silicon for preparing organosilicon compounds is used as a scaly filling agent. Pigments can be added to the composition for coloring. Invention provides preparing the composition showing high adhesion to metals, for example, to steel and to concrete, high mechanical strength, elasticity, abrasion-resistance, atmosphere-resistance, resistance to hot water effect and longevity. Proposed polymeric composition can be used for protection of metallic and concrete constructions, for floor covering and so on.

EFFECT: improved and valuable properties of composition.

6 cl, 2 tbl, 13 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to preparation of vibration-absorbing composition that can be used in a variety of industrial fields, in particular to mount turbogenerators, marine engines, hoists, and other equipment. Composition contains, wt % 4,4'-isopropylidenediphenol epoxide resin 20.7-40.8, active diluent 5,8-10.2, mineral filler 41,8-62.4, and amine hardener 7.2-11.1, said mineral filler being wollastonite with at least 30% needle fraction wherein ratio of needle length (not larger than 63 μm) to needle thickness is 5:1.

EFFECT: improved mechanical characteristics and damping properties.

2 tbl, 13 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: 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: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.

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

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

2 tbl

Up!