Anticorrosive primer coating

FIELD: oil producing industry; natural gas industry; production of the anticorrosive primer coating.

SUBSTANCE: the invention represents the anticorrosive primer coating intended for the anticorrosive protection of the steel pipelines predominantly of the oil pipelines and the natural gas pipelines at their building and overhaul and may be used for zone insulation of the welded couplings of the pipes together with the thermal shrink couplings and also for reconditioning of the insulation defects. For increasing the adhesion strength to the polyethylene and the steel as well as the primer coating protection stability against the cathodic spalling at the heightened temperature and slowing down of the underfilm corrosion by the primer coating it contains the butadien-styrene rubber, n-tret- butylphenolformaldehyde pitch, the copolymer of ethylene with the vinylacetate of "Evalan" brand, the mixture of the aminemethyl derivatives of nonylphenols and their hydrochlorides in the ratio from 25:1 up to 1:1, pyrocatechol, magnesium oxide, industrial carbon and the petroleum solvent.

EFFECT: the invention ensures, that the anticorrosive primer coating provides the anticorrosive protection for the oil and natural gas steel pipelines at their building and overhaul, for the pipelines welded couplings areas insulation as well as reconditioning of the insulation defects.

2 tbl

 

The invention relates to compositions of adhesive primers or primers designed for corrosion protection of steel pipelines, mainly oil and gas pipelines in their construction and repair. Primer can be used to isolate zones of welded joints of pipes with factory polymer insulation complete with double-layer radiationoncology heat-shrinkable polymeric sleeve, such as sleeve of heat-shrinkable "Temp" TU 19418943.001-99. The specified polymer coupler is applied on the primer to the metal in the weld seam area and on the edge of the factory plastic cover. The composition may be applied as a primer in insulating structures for application under the melts of polymers, under sticky polymer tape, bitumen based materials, as well as a separate coating.

Known industrial anti-corrosive primer, GRBI (TU 264-58-92). Primer of GRBI - resinosa filled, inhibited composition is dissolved in an organic solvent. Primer of GRBI is designed for corrosion protection of steel oil and gas pipelines with operating temperatures from minus 40 to plus 50°, and is used in insulating structures, consisting of a primer, polymer tape and husk.

The main disadvantage of known composition and the primer is a low adhesion to the surface of a polyethylene plant cover, so you cannot use it to isolate zones of welded joints of pipes and repair of defects. In addition, the coating on the primer, GRBI, has a low resistance to cathodic flaking and high speed sub pellicle corrosion.

The closest destination is an anticorrosive primer (Patent of Ukraine # 57291 And from 16.06.03., Bull. No. 6), which includes synthetic rubber, kumaran-indene resins and perchlorovinyl resin, corrosion inhibitor, a solvent, and as a filler carbon black, and as the vulcanizing agent is magnesium oxide. The composition is known primer is designed for corrosion protection of steel pipelines complete with sticky polymer ribbons, the polymer melts and polymer-bitumen materials. Known primer has a high protective and operational properties.

A disadvantage of the known composition of the primer is a low adhesion to the surface of the polyethylene and high speed sub pellicle corrosion.

The objective of the invention is the increase in the adhesion strength of the coating to the polyethylene and steel, increasing the resistance of the coating to the cathode otslaivaniju at elevated temperature and reduced speed sub pellicle corrosion.

This object is achieved anticorrosive primer comprising syntheti the ski rubber, synthetic resin, corrosion inhibitor, magnesium oxide, carbon black and an organic solvent, which contains as a synthetic rubber of the butadiene-styrene rubber, as a synthetic resin, p-tert-butylbenzaldehyde resin, as a corrosion inhibitor mixture aminomethyl derivatives of nonylphenols and their clorhidrato in a ratio of from 25:1 to 1:1 as the organic solvent oil solvent additionally contains a copolymer of ethylene with vinyl acetate brand "Avatar" and pyrocatechin in the following ratio of ingredients, wt.%:

Butadiene-styrene rubber3,5-12,5
p-tert-Butylbenzaldehyde resin4,5-10,5
A copolymer of ethylene with vinyl acetate brand "Avatar"2,5-9,0
A mixture of aminomethyl derivatives of nonylphenols
and their clorhidrato in a ratio of from 25:1 to 1:10,2-3,0
Pyrocatechinof 0.02 to 0.9
Magnesium oxide0,1-1,0
Carbonof 0.5-3.5
Oil solventRest

Feature selection primer was carried out taking into account the contribution and role of the Department of the components in the connectivity of the polymer coating to the metal surface and the surface of the factory plastic cover. In addition, taken into account manufacturability and application of primers, as well as the stability of its properties during prolonged storage.

For making primer as the base component is butadiene-styrene rubber stamps SKS-30 ark (GOST 6074-87) production Kuibyshev plant SC (Russian Federation). The application of the primer composition of styrene-butadiene rubber due to its good characteristics: high strength, water resistance, gas impermeability, compatibility with other components and manufacturability rubber mixture.

Used as part of p-tert-butylbenzaldehyde type resin 101-molecular weight 700-900 and melting temperature of 75-90°S, which is manufactured for THE 6-14-22-171-79 (Russian Federation), known as the vulcanizing agent in the tire industry. This resin is applied to improve the adhesiveness of the primer and increase its compatibility with the internal layer of heat shrinkable sleeves, which also contains the same resin. In addition, the applied p-tert-butyl phenol-formaldehyde resin provides high adhesion primer to the steel, as determined experimentally, has advantages in comparison with kumaran-ingenui, styrene-indene resins and perchlorovinyl resin.

In quality the ve copolymer of ethylene with vinyl acetate in the composition of the primer applied copolimer known under the trademark "Avatar" with a content of acetate groups 32-34%, t PL°C. Copolymers of ethylene with vinyl acetate are slightly soluble in the organic solvent at ordinary temperature, so their use in compositions of the primers problematic. Used in the primer composition is a copolymer with a high content of acetate groups is dissolved in an oil solvent at ordinary temperature and is compatible with other components of the primer. The use of Matana" in the primer composition can significantly improve the adhesion of heat shrinkable sleeves for polyethylene plant cover, since the inner adjacent to the primer layer of heat shrinkable sleeves are also made from a thermoplastic composition based on a copolymer of ethylene with vinyl acetate. In addition, the use of a copolymer of ethylene with vinyl acetate brand "Avatar allows to increase cohesive strength of the primer coating and improve its physical-mechanical properties.

As a corrosion inhibitor in the composition of the primers used a mixture of aminomethyl derivatives of nonylphenols and their clorhidrato. The raw material for the synthesis of aminomethyl derivatives were industrial mixture of mono - and dinonylphenyl and VAT residue production nonylphenols (CONF), containing about 20% of mono - and 50% of dinonylphenol (the remainder is mainly nonlevy ether anonanimal). The synthesis was performed according to the reaction Mann who ha condensation nonylphenols with formaldehyde and amines.

Condensation was carried out in two steps. First mixed at room temperature with equimolar amounts of aqueous solutions of formaldehyde (37%) and dimethylamine (30%). The resulting solution was added with vigorous stirring to the previously heated to 50-60°With Nonylphenol. The reaction was held at 60°C, atmospheric pressure within 4-5 hours the Oil layer was separated, washed with water and centrifuged. The resulting product is a viscous, oily mass brown color with a smell of amines; pl. t+5°C; soluble in aromatic hydrocarbons; insoluble in water and acetone; the content of amino nitrogen of 2.8%.

As the amine component along with dimethylamine was used ammonia and VAT residue production diamine. Chlorhydrate aminomethyl derivatives of nonylphenols were obtained by treatment of the latter with concentrated hydrochloric acid.

Individual aminomethyl derivatives of nonyl-phenols and their chlorhydrate known as additives for road bitumen, which improve communication between the bitumen from the sand and marble. In the proposed composition of the primers tested mixture aminomethyl derivatives of nonylphenols and their clorhidrato in a ratio of from 25:1 to 1:1. A significant positive effect is observed when the ratio of the amine to the hydrochloride in the range from 3:1 to 1.5:1. Optimal spacecraft is seen from the experimental data, is the ratio of amine:hydrochloride of 2:1, resulting in a significant positive effect of increasing the resistance of the coating to the cathode flaking and reduce speed sub pellicle corrosion. The application of a mixture of amine hydrochloride with another ratio leads to a marked reduction of the protective properties of the primer.

To increase the resistance of the coating to the cathode peeling at an elevated temperature in the primer composition applied pyrocatechin (o-dioxobenzo), t square 105°C.

It is known that for inhibiting corrosion of steel pipelines are under electrochemical protection. Under the influence of applied potential to the polymer coating may peel off from the metal surface, while reducing its protective properties. The rate of exfoliation increases significantly with increasing temperature operation of the pipeline. Therefore, the resistance of the polymer coating to the cathode peeling is one of the main indicators, which are normalized GOST R 51164-98: "steel pipe mains. General requirements for corrosion protection".

In the identified analogues are not ingredients designed to increase the resistance of the coating to the cathode detachment. When developing a primer composition was found experimentally that applied pyrocatechin increases the resistance of Antico is rosinei primer to the cathode peeling as normal, and at an elevated temperature.

In the primer composition is applied magnesium oxide, which is produced for GOST 4526-85. Magnesium oxide is used in rubber industry as a vulcanizing agent chloroprene rubber. The offered primer is magnesium oxide used as mineral filler and amplifier physico-mechanical properties of the primer coating. In addition, the magnesium oxide can bind adsorbed by the surface of the steel water and carbon dioxide.

As the filler and the amplifier of the rubber in the proposed composition of the primers used carbon C or P for GOST 7885-86.

As the organic solvent used oil solvent for the paint industry, GOST 10214-78.

Comparative analysis of the prototype allows us to conclude that the proposed composition of the primer differs from the known to the introduction of new components, such as a copolymer of ethylene with vinyl acetate and pyrocatechin. In addition, the proposed composition of the primer contains another, namely - butadiene-styrene rubber as the synthetic resin contains p-tert-butylbenzaldehyde resin as the corrosion inhibitor is a mixture of aminomethyl derivatives of nonylphenols and their clorhidrato, as an organic solvent - solvent oil.

The essence of the proposed solution is explained by the trail of the relevant examples.

Example 1.

First, cook the rubber mixture. With this purpose, 40 g of styrene-butadiene rubber dissolve for 2-3 min on cold microwulf. Then for 3-5 minutes give or 32.5 g of a copolymer of ethylene with vinyl acetate and fray to obtain a homogeneous mass. Further, with the difference in 2-3 minutes give 7.5 g of carbon black, and 2.5 g of magnesium oxide and homogenize the mixture for 3-5 minutes Total cooking time rubber compound is 12-15 minutes Gap between the rollers 1-2 mm, the temperature of the rolls 50-70°C. has been Removed from the rolls of the rubber mixture is crushed, loaded into clearesult, pour 1/2 of the organic solvent and dissolved in 3-4 hours at t 25+5°C. After dissolution of the rubber load of 37.5 g of p-tert-butylbenzaldehyde resin and another 1/4 part of the solvent. To this solution was added 5 g of the corrosion inhibitor and 0.5 g of pyrocatechin. The mixture is stirred for 1.5 to 2.0 hours to dissolve the components. Add in a few receptions, the remainder of the solvent, reducing the viscosity of the primer to 30-40 with the viscometer of the OT-4.

The total time of manufacture of the primer is 5.5 to 6.0 hours at a temperature of 25+5°C.

Examples of compositions 2-21, manufactured analogously to example 1, the only difference is the number of components. The compositions of the obtained primers shown in table 1.

Grunto the ku can be produced on industrial equipment. The total time of manufacture of the primer is 5.5 to 6.0 hours at a temperature of 25+5°C.

Ready primer should be applied to prepared in accordance with the regulatory documents dry metal surface of the weld zone of the pipe, and on the edge of the factory plastic insulation so that heat-shrink sleeve was applied to the primed surface. The primer is applied in a thin layer (flow rate of 100-150 g/m2using a brush, by spraying or watering at the temperature of the pipe body from + 10 to + 60°C. After 2-10 min after the application of primer to the area of welded joint put heat shrink sleeve and get her thermal or thermoelectric method according to the technology provided specifications and technical regulations on the clutch.

The resulting compositions primers and coatings on their basis were tested for adhesive strength in accordance with GOST R 51164-98 method of peeling off the steel substrate under an angle of 180° 20°S, 40°S, 60°and the rate of exfoliation of 50 mm/min as heat shrinkable sleeves used clutch "Temp" (TU 19418943.001-99). The tests were carried out on pipes with a diameter of 530 mm in the factory, as well as fragments of coated pipes, under laboratory conditions. The test results are given in table 2.

The measured critical exploitationsilva obtained compositions primers - the stability of the adhesive strength under the effect of water and temperature. The water resistance of adhesion of primers was determined after soaking the samples in water for 1000 hours at a temperature of 20°S, 60°and 98°C. the measurement Results are shown in table 2.

Determined resistance based primer to the cathode peeling in the process of soaking in 3%aqueous NaCl solution at a potential of polarization 1.5 volts for 30 days and temperatures of 20°s and 60°in accordance with GOST R 51164. The measurement results are given in table 2.

The protective properties of the primer and coating on its basis is determined using the method of the polarization resistance of the device WISC-1 in saline water at 20+1°C. Evaluated the corrosion rate of the metal under the primer that was applied to the sensor by dipping them into the primer, followed by drying for 60 minutes at a temperature of 20-25°C. the value of the current calculated polarization resistance, which is inversely proportional to the corrosion rate of the metal under the coating. The measurement results are given in table 2.

The data of table 2 indicate that the proposed anti-corrosion primer in comparison with the known, taken as a prototype, has the following advantages:

1) adhesive strength to the polyethylene at 20&#HWS above 10 times;

2) bond strength to steel at 20°With above 3 times, and at 40°in 7-8 times;

3) resistance adhesion above 3-5 times;

4) resistance to cathodic flaking at 20°above 2-3 times, and during the 60°With much higher;

5) speed sub pellicle corrosion smaller by 2-3 orders of magnitude.

Thus, with the combination of useful features, the proposed anti-corrosion primer and coating on its basis acquire qualitatively new properties, which confirms the novelty of technical solutions.

Shelf life primer - at least 2 years.

Table 1 - Compositions of primers
Name

components
The content of components in the composition, wt.%
1234567
Butadiene-styrene rubber8,03,512,58,08,08,08,0
P-tert-Butylbenzaldehyde smo is and 7,57,57,54,510,57,57,5
A copolymer of ethylene with vinyl acetate brand "Avatar"6,56,56,56,56,52,59,0
The mixture aminomethyl
derivatives of nonylphenols and their
clorhidrato1,01,00,51,00,50,50,3
in the ratio of: (Amin:PI is Gerat) (2:1)(2:1)(2:1)(2:1)(2:1)(2:1)(2:1)
Pyrocatechin0,10,10,10,10,60,10,1
Magnesium oxide0,50,50,50,50,50,50,5
Carbon1,51,52,01,51,01,51,5
Oil solvent74,979,470,477,972,479,473,1
Continuation of table 1
Name

components
The content of components in the composition, wt.%
891011121314
Butadiene-styrene rubber8,08,08,08,08,08,08,0
P-tert-Butylbenzaldehyde resin7,57,57,57,57,57,57,5
A copolymer of ethylene with vinyl acetate brand "Avatar"6,56,56,56,56,56,56,5
A mixture of aminomethyl derivatives of nonylphenols and their
chlorhydrate the 0,51,01,01,01,01,00,2
ratio:
(Amin:hydrochloride)(25:1)(10:1)(5:1)(3:1)(1,5:1)(1:1)(2:1)
Pyrocatechin0,10,10,10,10,10,10,1
Magnesium oxide0,50,50,50,50,50,50,5
Carbon1,51,51,51,5 1,51,51,5
Oil solvent75,474,974,874,974,974,875,7

6 a 12.7 1,4
The end of table 1
Name of the componentThe content of components in the composition, wt.%
15161718192021
Butadiene-styrene rubber8,08,08,08,08,08,08,0
P-tert-Butylbenzaldehyde resin7,57,57,57,57,57,57,5
A copolymer of ethylene with vinyl acetate mA is key "Avatar" 6,56,56,56,56,56,56,5
A mixture of aminomethyl derivatives of nonylphenols and their
clorhidrato0,33,01,01,01,01,01,0
ratio:
(Amin:hydrochloride)(2:1)(2:1)(2:1)(2:1)(2:1)(2:1)(2:1)
Pyrocatechin 0,10,10,020,70,90,10,1
Magnesium oxide0,50,50,51,00,10,50,5
Carbon1,51,51,481,31,50,53,5
Oil solvent75,672,975,074,074,575,976,9
Table 2 - Physical and mechanical properties of primers and coatings based on it
IndicesThe value of indicators examples
1234578
The dry residue, wt.%:25,120,629,622,127,620,626,924,6
Viscosity of the OT-4 (20+1)°s:35,023,050,032,037,527,543,534,5
Adhesion to polyethylene, N/cm:
20°37,032,530,031,527,015,535,024,5
60°16,514,08,010,47,0of 17.011,5
Adhesion to steel, N/cm:
20°85,072,065,545,095,064,880,378,5
40°35,532,5to 25.325,042,031,037,6a 38.5
60°of 17.015,011,512,320,310,015,516,3
The water resistance of adhesion N/cm:
20°C, 1000 hours75,065,4a 50.528,7to 83.548,475,064,5
60°C, 1000 hours73,065,050,924,082,7to 43.172,961,5
98°C, 1000 hours72,063,050,023,581,542,571,5of 60.5
Area of peeling under cathodic polarization, cm2:
20°C, 30 days1,32,51,50,81,51,9a 4.9
60°C, 30 days9,09,511,811,57,38,710,014,5
The corrosion rate,

mm/year·10-6
0,60,82,02,91,81,32,79,5
Continuation of table 2
IndicesThe value of indicators examples
9101112131415
The dry residue, wt.%:25,125,125,125,125,1 24,324,4
Viscosity of the OT-4 (20+1)°s:34,334,534,935,535,735,936,3
Adhesion to polyethylene, N/cm:
20°27,025,530,528,523,016,821,8
60°12,513,014,512,113,68,017,1
Adhesion to steel, N/cm:
20°78,082,085,573,085,064,880,5
40°30,532,533,325,032,021,028,5
60°20,021,020,518,315,310,018,3
The water resistance of adhesion N/cm:
20°C, 1000 hours65,374,580,568,773,548,551,0
60°C, 1000 hours 53,067,060,964,052,745,552,9
98°C, 1000 hours61,065,559,761,550,841,8to 49.3
Ploddy of peeling under cathodic polarization, cm2:
20°C, 30 days4,3a 3.92,53,5the 3.82,91,9
60°C, 30 days12,912,510,814,516,311,713,0
The corrosion rate,

mm/year·10-6
6,85,62,23,17,02,51,9
The end of table 2
IndicesThe value of indicators examplesPrototype ″OZ″
161718192021
The dry residue. wt.%:27,125,0226,024,824,127,135,0
Viscosity of the OT-4 (20+1)°s:32,534,037,033,532,5a 38.530,0
Adhesion to polyethylene, N/cm:
20°24,534,525,537,529,333,03,0
60°15,313,810,9of 17.512,914,8-
Adhesion to steel, N/cm:
20°80,585,582,095,575,698,528,0
40°28,534,538,0 43,035,042,05,0
60°18,3to 12.020,523,517,825,1-
The water resistance of adhesion N/cm:
20°C, 1000 hours72,576,274,690,568,889,025,0
60°C, 1000 hours71,070,064,385,368,382,515,0
98°C, 1000 hours70,569,5 62,783,067,581,0-
Area of peeling under cathodic polarization, cm2:
20°C, 30 days2,77,80,44,51,51,83,5
60°C, 30 days16,5of 17.57,515,812,513,3the Opera
The corrosion rate, mm/year·10-65,1the 9.70,51,21,90,73,5·10-4

Anticorrosive primer is the WHC, including synthetic rubber, synthetic resin, corrosion inhibitor, magnesium oxide, carbon black and an organic solvent, characterized in that the quality of synthetic rubber contains butadiene-styrene rubber, as a synthetic resin, p - tert-butylbenzaldehyde resin, as a corrosion inhibitor is a mixture of aminomethyl derivatives of nonylphenols and their clorhidrato in a ratio of from 25:1 to 1:1 as the organic solvent - oil solvent additionally contains a copolymer of ethylene with vinyl acetate brand "Avatar" and pyrocatechin in the following ratio of ingredients, wt.%:

Butadiene-styrene rubber3,5-12,5
p-tert-Butylbenzaldehyde resin4,5-10,5
A copolymer of ethylene with vinyl acetate
the brand "Avatar"2,5-9,0
A mixture of aminomethyl derivatives
nonylphenols and their clorhidrato
in a ratio of from 25:1 to 1:10,2-3,0
Pyrocatechinof 0.02 to 0.9
Magnesium oxide0,1-1,0
Carbonof 0.5-3.5
With event oil Rest



 

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15 cl, 3 tbl, 9 ex

FIELD: polymer materials as protective coatings.

SUBSTANCE: invention relates to preparing anticorrosion, fire-resistant, and heat-retention composition for use in oil and gas production industry, petrochemical industry, in municipal economy and other areas, where protection of surfaces against corrosion, heat, and inflammation are required as well as to application of composition as protective coating for metal, concrete, and, in particular, for protection of pipelines operated in permafrost regions, under water surface, and at large temperature and pressure gradients inside and outside pipelines. Composition is composed of 5-95% epoxide resin, 3-65% hardener, 5-95% hollow microspheres, and 0-20% auxiliary additives. Hollow microspheres are selected from group consisting of glass hollow microspheres, ceramic hollow microspheres, polymeric microspheres, hollow man-made microspheres and mixtures thereof. Microspheres are dimensioned within a range 10 to 500 μm with loose density between 650 and 50 kg/m3.

EFFECT: improved performance characteristics of coatings.

2 cl, 1 tbl, 6 ex

FIELD: polymer materials and corrosion protection.

SUBSTANCE: invention relates to anticorrosive protection of articles, units, and constructions made of ferrous metals, concrete, and reinforced concrete operated under corrosive aqueous and oil-containing media conditions. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01) as film-forming component, indene-cumaron resin and epoxide dian resin (ED-20) as adhesive additives, phenyl-2-naphthylamine as amine-type antioxidant, xylene and/or toluene as organic solvent, polymethylsiloxane liquid (PMS-200) as spreading agent, and mixture of cobalt, manganese, and lead octoates as thixotropic additive in the form of 45-55% solution in white spirit or petroleum solvent Nefras C4-155/200, wherein mass percentage of lead is 15.0-15.5% and summary mass percentage of cobalt and manganese is 2.0-2.4%. Composition is thixotropic so that coating with thickness of nondrip wet layer 1.0-1.3 mm may be applied.

EFFECT: increased oil resistance in media of water-saturated petroleum products.

2 tbl

FIELD: polymer materials and corrosion protection.

SUBSTANCE: invention relates to technology of anticorrosive protection of internal surfaces vehicles and stationary metal and concrete storehouses exposed to chemical and abrasive action of loose mineral fertilizers. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01), epoxide dian resin (ED-20), indene-cumaron resin, phenyl-2-naphthalene, polymethylsiloxane liquid (PMS-200), pigment filler "Prokal", chromium oxide, tetrabutyl orthotitanate, and organic solvents: toluene and/or xylene. Proposed composition can be applied at negative temperatures and temperature below dew point while anticorrosive coating formed therefrom is less inflammable and is stable in media of wet loose mineral fertilizers.

EFFECT: reduced inflammability and increased resistance to wet loose mineral fertilizers.

2 tbl

FIELD: special compositions and covers.

SUBSTANCE: invention relates to applying anti-corrosive and anti-friction covers. Invention describes a composition used in preparing covers by autophoresis method and this composition comprises the following components: polytetrafluoroethylene F-4D 57% aqueous suspension, copolymer of tetrafluoroethylene with hexafluoropropylene F-4MD 53% aqueous suspension, oxyethylated alkylphenol, filling agents - titanium dioxide, ground mica, technical carbon of sort K-354, aerosil of sort AA taken in the ratio = 2:1:1:0.3, respectively, solvents - 1,4-butanediol, butyl cellosolve and xylene taken in the ratio = 1:0.7:0.7, respectively, polyvinylpyrrolidone, polymethylphenylsiloxane 30% solution in toluene, ortho-phosphoric acid, amino-derivatives of benzimidazoles: 2-(1-methyl-2-pyrrolyl)-5-aminobenzimidazole, 1,2-dimethyl-5,6-diaminobenzimidazole dihydrochloride, 2-(n-methoxyphenyl)-5-aminobenzimidazole and water taken in the claimed ratio of components. Invention provides absence of pores in cover, enhancing wear resistance and corrosion-protective properties of cover.

EFFECT: improved and valuable technical properties of composition and covers.

2 tbl, 4 ex

FIELD: manufacture of building materials.

SUBSTANCE: invention, in particular, relates to fireproofing materials based on intercalated graphite compounds and is designed for applying fireproofing coatings of outdoor and indoor surfaces of civilian- and military-destination objects, for treating industrial structures to block propagation of fire due to imparted fireproofing and high heat-insulation properties under high temperature conditions. Fireproofing composition proposed comprises 50% acrylic dispersion as binder, urea-formaldehyde resin, oxidized graphite as oxidant, pentaerythritol and Na-carboxymethylcellulose as carbonizer, titanium dioxide and calcium carbonate as filler, urea as hardener, and water, said 50% acrylic dispersion being based on copolymer of butyl acrylate, methyl methacrylate, and methacrylic acid at ratio 47:52:1 and said filler being in the form of chopped glass thread at specified proportion of constituents.

EFFECT: increased tensile strength and reduced variation in linear dimensions.

2 tbl

The invention relates to the field of creation of filled polymer compositions with reduced Flammability based on phenol-formaldehyde resins, which can be used as interior materials, coatings and levelling compounds in the structures of polymeric and metallic structural materials in engineering and shipbuilding, aviation industry and construction

The invention relates to a waterborne paint materials and can be used as a waterborne primers and enamels

The invention relates to coatings industry and can be used for coating the inner surface of the canning containers (stamped banks with varying degrees of extraction) and lewkowskiej covers made of aluminum and its alloys and tin

The invention relates to polymeric compositions for protection against corrosion, in particular to compositions for the protection of agricultural and railway equipment under the action of moisture at elevated temperatures

The invention relates to rubber chemicals-resin compositions for metal protection under the action of moisture and salt fog, used in particular in motor vehicles to cover the bottom of the wings and internal cavities

Modifier // 2005755
The invention relates to substances used in the process of paint application

FIELD: polymer materials and corrosion protection.

SUBSTANCE: invention relates to anticorrosive protection of articles, units, and constructions made of ferrous metals, concrete, and reinforced concrete operated under corrosive aqueous and oil-containing media conditions. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01) as film-forming component, indene-cumaron resin and epoxide dian resin (ED-20) as adhesive additives, phenyl-2-naphthylamine as amine-type antioxidant, xylene and/or toluene as organic solvent, polymethylsiloxane liquid (PMS-200) as spreading agent, and mixture of cobalt, manganese, and lead octoates as thixotropic additive in the form of 45-55% solution in white spirit or petroleum solvent Nefras C4-155/200, wherein mass percentage of lead is 15.0-15.5% and summary mass percentage of cobalt and manganese is 2.0-2.4%. Composition is thixotropic so that coating with thickness of nondrip wet layer 1.0-1.3 mm may be applied.

EFFECT: increased oil resistance in media of water-saturated petroleum products.

2 tbl

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