Anticorrosion coating composition

FIELD: chemistry.

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.

4 tbl

 

The invention relates to compositions of corrosion-resistant zinc-containing paint materials to surfaces such as primers, paints and enamels for cathodic corrosion protection of steel structures, products and equipment, operating in conditions of medium to very corroded environments and can be used in industrial and civil construction, shipbuilding, automotive, bridge and to protect engineering and hydraulic structures, industrial and energy installations, equipment, chemical and petrochemical industries, port facilities.

Widely known zinc-containing film-forming compositions on the basis used for cold galvanizing metal surface. It is also known that not all zinc-containing film-forming compositions on the basis of protect the metal surface protective mechanism, since the latter is provided, as a rule, provided that the content of zinc in the dry coverage of more than 90 wt.%. Moreover, an important condition of the cathodic protection mechanism is to maintain the conductivity of the coating. The global objective is to increase the duration of action of the protective properties of zinc-rich coatings, with the aim of bringing to the duration of protective actions hot-dip galvanized coatings. Indicated which data is addressed by the researchers by applying the mixed conductive pigments, the selection of powders and fillers with different particle shape, the use of powders of zinc alloys, as well as more active modifying additives to the film-forming with pigments or fillers conductive complexes.

In science and technology is known for a wide range of zinc-containing compositions based on epoxy, urethane, polystyrene, ethyl silicate and the like, a binder content of zinc powder in a dry coverage of more than 90 wt.%. Apply powder of zinc in all the compositions, as a rule, meets the requirements of ISO 3549:1995 (E). [Austinburg, Efecto, Tvilisskaya. "Anti-corrosion primer", Published by LLC "NIPROS LMB and P OP", St. Petersburg, 2006, p.78-86]. Protective properties of zinc-rich coatings due to the anodic dissolution of metallic zinc, which is attended only 25% of its mass content in the floor, into the oxide and / or hydroxide. When filling these reaction products surface coating, anodic dissolution of zinc is terminated, and further protection is provided by a "barrier" mechanism isolated from the corrosive environment.

In the known compositions as a film-forming base binder used, representing the individual polymers without special modification that is not always possible to provide the desired adhesion pokrytiya the metal and formation of a conductive complexes with filler. Get anticorrosive compositions are in the form of one or both supplied in two packages of songs.

Also known zinc-containing compounds on the basis of modified binders. So, for example, known zinc-containing paint based on chlorine-containing binder - modified thermoplastic resin of polyvinyl chloride, where the modifier used Dianova resin ED-20 or ED-41 [RF Patent №1657518, IPC C09D 127/06; C09D 5/10; C09D 127/06; C09D 155:02; C09D 163:02, 1991].

Known paint is the two packages, while odnoupakovochnye compositions more easy to apply. In addition, in the known structure is not provided sedimentation stability when diluted to working viscosity, and therefore, the coating is accompanied by uneven thickness and uneven distribution of zinc in the coating, which does not allow to provide a protective mechanism for the protection of metal surfaces.

Closest to the proposed is tropicabana primer containing, wt.%: zinc powder of highly dispersed 55-65; zinc oxide 10-15; a foaming agent consisting of skinny alkyd varnish, a modified phenol-formaldehyde resin with an acid number of not more than 15 mg KOH/g 10-15; bentonite organophilic SD10.3 to 0.8; lecithin 0.3 to 0.8; desiccant tracheally 0.1 to 0.3; toluene - rest [atent of the Russian Federation No. 2304602, IPC C09D 167/08; C09D 5/08; 2007]. As superfine zinc powder is used any powder imported with an average particle size of 3-5 μm, for example, imported brands S3 (Norway)or brand EMP, UMP (South Korea)meeting the requirements of ISO 3549:1995 (E).

Known composition is adaptable to the coating process and the resulting coating provides resistance to water and oil. However, the use as a binder alkyd agent restricts the extent of aggressiveness of the environment, which can be used material. Modification of the alkyd binder more chemically resistant phenol-formaldehyde resin allowed to provide resistance to water and oil, while a similar result usually is provided by the use of higher quality binder of epoxy and urethane series. Known coating cannot be used in solutions of acids, alkalis, salts, organic acids, aggressive industrial and marine atmospheres. In addition, the known coating dries to grade 3 for 1.5-2.0 hours, which makes the coating process unreasonably long. Moreover, due to the high content of zinc oxide in the coating, it has a weak protective properties.

The technical task of the present izaberete the Oia is the creation of material, providing high technological properties of the process of corrosion surface treatment of products made of ferrous metals, while providing increased the duration of the cathodic protection in conditions of medium to very corroded environment.

The problem is solved in that in contrast to the known composition containing fine powder of zinc in the environment binding, zinc oxide and additives target, the proposed composition as a binder contains glorious-modified alkyd resin having a pH of not more than 20 mg KOH/g and plasticized klorparaffiner wax in the medium of organic solvent in the following ratio of components, wt.%:

Glorious14,0-19,0
The alkyd resin with acidity not
more than 20 mg KOH/g6,0-9,0
Korparativy wax7,0-11,0
Organic solventrest

as the target additives contains thixotropic additive in the form of polymerized amphoteric oil, sedimentation additive - bentonite body is multidisciplinary, and optionally graphite in the following ratio of components, wt.%:

Superfine powder zinc48,8 is 69.6
Bentonite organophilicof 0.2-0.3
Curing amphoteric oilof 0.2-0.3
Graphite4.0 to 4.5
Zinc oxide0,9-1,2
The specified binderrest

As finely powdered zinc may be used any of known import and domestic brands of powder of zinc by the well-known industry methods and appropriate chemical and granulometric composition with the requirements of ISO 35:49:1995 (E), for example, powders imported brands S3 (Norway)or brand EMP, UMP (South Korea), or brand MSU (India)or brand R (Belgium)or brand KFZn625 (China), or domestic production - brand PCV (manufacturer OOO NPP "Uralavtoprom"), or brand PCVD (manufacturer ZAO NPP "Fine metal powders").

As the chlorinated rubber may be used any chlorinated olefin polymer with a chlorine content of at least 50 wt.%,for example, brand PERGUT S20 BAYER with a chlorine content of 64.5 wt.% or brand YURON CR20 company YURON CHEMICAL INUSTRY MATERIAL or other known equivalent materials.

As alkyd resins with acidity not more than 20 mg KOH/g can be used semi-lacquer brand PF-053, issued by THE 2311-277-05744283-2007 or THE 2311-059-05788576-2005 synthesized by modification of pentaftalevyh resin unrefined sunflower oil and a mixture of phthalic anhydride and rosin. Can be used by different well-known pentaftalevyh alkyd resin with a specified acidity.

As korparativnogo wax can be used a mixture of chlorinated paraffin wax With10-C13brands Cereclor 54 DP, DP 52 manufactured by BANG &BONSOMER or any other acceptable mixture of chlorinated paraffin wax.

As zinc oxide may be used any of industrially produced zinc oxide content of the basic substance 99,0-of 99.5 wt.%, meets the requirements of GOST 10262-73.

As a thixotropic additive use derivatives amphoteric polymer oils, for example, the brand Tromix 42 VA Corporation TROY-based aromatic petroleum distillates or Thixotropy marks ST, GST based on hydrogenated castor oil modified with organic substances or can be used by different well-known additive, similar thixotropic St is Istvan.

As sedimentation additives may be used any known organophilic bentonite, for example, the brand Bentonite SD1company BANG &BONSOMER.

As graphite can be used natural graphite brand EUT-2 according to GOST 10274-79 or brand GK-3 according to GOST 4404-78 or graphite other brands, preferably with scaly structure of the particles, capable of performing the function of a filler-pigment.

As the organic solvent used Srednerussky aromatic solvent, for example xylene or solvent oil, GOST 10214-78 or other acceptable solvent.

Comparison of the proposed structure with the known leads to conclude that the criterion of "novelty", as proposed composition contains a new binder, in a new qualitative and quantitative proportions of ingredients in the composition.

The proposed binding involves the use of chlorinated rubber modified alkyd resin and plasticized klorparaffiner wax in the environment of an organic solvent. As the basis of cinnabarinus material binding offer has not previously been used. The use of the claimed composition was allowed to get non-obvious technical result - homogeneous highly stable dispersion of a powder of zinc in a binder that provides a drying time of odnosno the aqueous coating at 20°C tack-free - 15-40 minutes. The coating obtained from the inventive composition, has high chemical resistance to aggressive media and has a long-lasting effect that provides durability anti-corrosion protection of metal surfaces. The proposed binding forms with the proposed fillers complex conductive complexes, providing a protective mechanism to protect the surface. In addition, studies have shown, the plasticization of the chlorinated rubber klorparaffiner wax provides high hardness, plasticity, resistance of the finished coating, the resistance of the coating acquires the quality of a "flame and quenching the flame.

The selection of hydrogen chloride, potential at thermal hydrolysis of chlorine-containing binder, is compensated by the introduction of zinc oxide, which in the inventive compositions performs the function of thermo stabilizer - acceptor hydrogen chloride generated during operation of the coating at high temperatures.

Introduction in the inventive composition graphite as filler increases the resistance of the finished coating to abrasive loads, expanding the scope. The inventive coating can be used for sealing joints, slab joints, protection of springs and spring leaves, experiencing specific physically the e load in combination with an aggressive environment. In addition, the joint introduction in the inventive composition of graphite and finely powdered zinc increases the chemical resistance and the heat resistance of the finished coating. The mechanism of action of such an integrated filler in the composition due to the fact that when applying the inventive composition to the surface, light graphite plate surface and protects the zinc from direct contact with an aggressive environment, preventing the formation of a continuous impermeable layer of products of interaction of zinc with the environment. Due to this, the duration of the protective properties of the coating increases, at least in 2.0-2.5 times, even when the content of zinc less than 90 wt.%.

The introduction in conjunction with the inventive binder and comprehensive filler traditional target antiedematogenic and thixotropic additives can receive chinnaponnu variance, not stratifying during prolonged storage (>12 months) and diluted to working viscosity.

Joint use of the claimed binder and comprehensive filler of finely powdered zinc and graphite in the stated quantities allows to obtain a technical result, which has no analogues in comparison with the known zinc-rich paint coatings - allows you to receive treatment with the a simple corrosion resistance, approaching the performance of galvanized coating thickness of 60 μm, and with high retention and good processing properties.

The foregoing leads to the conclusion on the compliance of the claimed invention, the criterion of "inventive step".

The inventive composition may be manufactured from known materials of domestic and/or imported, manufactured on an industrial scale and is widely represented in the domestic market, as well as the use of standard paint equipment. The coating is applied by standard methods adopted in paint production. The foregoing leads to the conclusion on the compliance of the claimed invention, the criterion of "industrial applicability".

The claimed composition was prepared as follows.

Organic solvent, which is used as xylene or solvent oil in the claimed amount, are mixed in a high-speed dissolver with chlorokauczukowy, which is used as the chlorinated olefin polymer with a chlorine content of 64.5 wt.% brand PERGUT S20. The mixture is heated to a temperature of 40°C or slightly above and stir until dissolved. There in the claimed amounts of load modifying alkyd resin having a pH of not more than 20 mg KOH/g, which is used in the comfort of alkyd varnish brand PF-053 and korparativy wax, which use a mixture of chlorinated paraffin wax With10-C13At the same time, in the dissolver in the claimed number of load sedimentation additive, which is used Bentonite SD1and thixotropic additive, which use derivatives amphoteric polymer oil brand Tromix 42 VA. The resulting mixture was dispersed at a constant temperature for 15-20 minutes. The mixture is then cooled to a temperature of the working premises and consistently give her the claimed amount of zinc oxide, graphite, which is used graphite brand EUT-2 brand or GK-3, and superfine powder of zinc, which is used as the powder zinc brand PCV or brand KFZn625. The resulting mixture is stirred until tender, being unloaded from dissolver in the deoxidizer for cooling and removal of air bubbles, then pour into containers.

Binder for the claimed composition is produced by mixing chlorinated rubber, alkyd resins, korparativnogo wax and an organic solvent in the following ratio, wt.%:

Glorious14,0-19,0
The alkyd resin with acidity not
more than 20 mg To The N/g 6,0-9,0
Korparativy wax7,0-11,0
Organic solventrest

The claimed composition was prepared in the following ratio, wt.%:

Superfine powder zinc48,8 is 69.6
Bentonite organophilicof 0.2-0.3
Curing amphoteric oilof 0.2-0.3
Zinc oxide0,9-1,2
Graphite4.0 to 4.5
The specified binderrest

Examples of specific formulations of the binder shown in table 1. Examples of specific formulations of the inventive compositions are shown in table 2. Properties of the claimed compositions are given in table 3.

Preparation of samples for testing is carried out according to GOST 8832, GOST 9,402 and ISO 12944-4:1998 and ISO 8501-1:1998.

As the sample material used low-carbon steel grades 08 PS or 08 KP, FCZ with a sheet thickness of 0.8-1.0 mm surface Preparation of samples PR is maintained by cleaning with a solvent, which used white spirit, solvent, xylene, solvent R-4, R-5, and by subsequent dry blasting. The surface roughness indicator Rz amounted to 40-60 microns.

Samples for testing were prepared by the applicable standard. The coating is deposited by methods of air, airless spray or by brush, roller. If necessary, the material before coating was diluted to working viscosity with xylene or solvent, or solvents R-4 or R-5. The resulting coating was dried in natural conditions within 15-40 minutes, depending on thickness, temperature and humidity. The thickness of the single-layer coating depends on the method of its application and is 30-80 μm. Before testing physico-chemical and mechanical properties of the coating is maintained at room temperature for more than 7 days. The drying time is determined according to GOST 19007, the adhesion of the coating to the metal surface defined by GOST 15140, method 2, the impact strength is determined according to GOST 4765, the elasticity of the coating at the bend defined by GOST 6806. The density of the claimed composition was determined according to GOST 28513, viscosity - viscometer VZ-246 with a nozzle of 4 mm according to GOST 8420. Mass fraction of non-volatiles determined according to GOST 17537, resistance to static action of liquid media is defined by GOST 9.403, the method is. Chemical resistance of the coating is tested at 25 and 60%solutions of sulfuric acid at a temperature of 20°C according to GOST 367-73 and sodium hydroxide according to GOST 4328-77. After testing the condition of the coating is evaluated according to GOST 9.407. The resistance of the coating is determined by OST 6-10-422-78. Protective properties determined by measuring the kinetics of changes of the electrode potential by direct potentiometry and practically confirmed by the results of state of the metal on the artificial defect is a scratch on ISO 4623 no on the scratch filiform rust and corrosion, which causes the leakage of dangerous process sub pellicle corrosion. The standard potential is defined by THE 2313-015-50316079-2004. The data obtained for coatings made from the inventive compositions are given in table 4.

Requirements for the coatings according to the normative-technical documentation:

the adhesion method of lattice cutsno more than 4 points
impact strengthnot more than 100 cm
elasticity in bendingnot more than 10 mm
initial inpatient capacity
regarding horsebang electrodenot more than 0.95 In

As can be seen from the data presented in table 4, the coating obtained from the inventive composition is characterized by high mechanical, abrasive properties, high impact resistance, ductility and resistance to aggressive environments, which are not resistant to all known still paint, zinc-rich materials.

When the number of input finely powdered zinc above the claimed limit of the applied layers are thicker and therefore has a high porosity, which can lead to chipping of the particles of zinc from the coating mechanical influences. When reducing the amount of typing powder zinc below the proposed limit, cathodic protection mechanism is not achieved.

When you reduce the amount of modifying alkyd resins and plasticizing korparativnogo wax in the binder below the stated limits, reduced corrosion and chemical resistance of the coating reduces the adhesion to the steel substrate and plasticity. When the number of modifying alkyd resins and korparativnogo wax in the binder above the upper limit increases drying time, deteriorating chemical resistance.

When you reduce the amount of graphite below the lower Pres who ate not achieved a substantial increase in the duration of the protective properties of the coating, reduced chemical resistance and heat resistance of the coating.

The manufacture of the compositions in proportions that do not meet the claimed amounts, leads to a significant reduction of technological and protective properties of coatings.

The claimed composition is tropicoco composition satisfies the requirements of anti-corrosion compounds, and can be used as a paint coating for cathodic protection from corrosion products and structures made of ferrous metals, operating in conditions of medium and high aggressiveness of the environment category C3-C5-M according to the classification ISO 1244-2:1998 at temperatures up to 150°C saline mist, vapours and aerosols of acids, alkalis, salt solutions, acids and alkalis, alternating exposure to acid-alkali and freshwater, sea water and soil categories Im1, Im2, Im3, respectively. Coating of the inventive compositions also sustainable in contact with crude oil and petroleum products, acetic acid and its anhydride, providing high corrosion resistance and chemical stability of the treated metal surface.

The inventive composition can be used to obtain separate coverage, and to obtain a primer coating in an integrated protective and decorative systems in combination with opaque enamels OS is ove epoxy, vinyl chloride, urethane, chlorinated rubber binder, chlorinated, chlorosulfonated polyethylene and other

The inventive composition has a high sedimentation stability during prolonged storage (>12 months) and diluted to working viscosity, technologically suitable speed for natural drying to grade 3 for 15-40 minutes, ensures anti-corrosion coatings with high adhesion, plasticity, long-lasting protection in excess of 2.0-2.5 times the length of the protective properties of the usual anti-corrosion compounds, chemical resistance in environments characterized by pH 3-12.

Table 1
The compositions of the binder compositions according to the invention
No.Name ingredientsExamples according to the invention
wt.%123
1Glorious Pergut S2014,0of 17.019,0
2The alkyd resin with
acidity not more than6,07,09,0
20 mg KOH/g-lacquer
brand PF-053
3Korparativy wax7,010,011,0
brand Cereclor 54 DP
4Organic solvent:
- xylene73,066,0-
- oil solvent- -61,0

Table 2
Formulations of compositions according to the invention
Name of ingredients, wt.%Examples according to the invention
1234
Binder:
- example 125,0---
- example 2-30,036,00-
- example 3--45,0
Superfine powder zinc:
- Brand PCV 69,6-57,8-
- Brand KFZn625-64,5-48,8
Graphite:
- brand EUT-24,0...4,5
- brand GK-3..4,04,5-
Bentonite SD10,20,20,30,3
Tromix 42 VA0,30,30,20,2
Zinc oxide0,91,01,21,2

Table 3
Properties of the claimed compositions
Name of indicatorExamples of compositions according to the invention
1234
Appearance:
after long-term storage in stationary conditionsHomogeneous plastic viscous dispersion without sediment
after thorough mixingA homogeneous suspension is dark gray in color without lumps
Density, g/cm32,52,52,32,2
Viscosity by viscometer B3-s the nozzle diameter of 4 mm at 20±0.5°C, with50454030
Mass fraction of non-volatiles, %8178 7366
The consumption of single-layer coating, g/m2250200200180
Shelf life, monthsMore than 12More than 12More than 12More than 12

Table 4
The properties of coatings obtained from the claimed compositions
NameExamples of compositions according to the invention
index1234
Color and appearanceDark-gray, slightlyGrayGray
roughMattMatt
Thickness of one layer80 605040
(dry) mm
Drying time before40303015
3rd degree at 20±2°C
min
The adhesion points1111
Impact strength, cm100100100100
Elasticity at2211
bending, mm
Resistance at
20±2°C static
impact h:
- water540540540540
- crude oil300300300300
- industrial oils250250250250
- solution "sea600600600600
Sol"
The temperature at8888
150°C
Resistance to
acid and
alkali at 20±2°C, h:
a solution of H2SO4for 25%300300300300
tion;300300300300
a solution of NaOH, 25%-
NYY
Resistance
the notch in
a temperature of 40±5°C and
humidity of 80±5%600600600600
the presence of traces
NaCl, h
Acetic acid and 18%100100100100
n the I at 20±2°C, h

Anticorrosive composition for coatings containing fine powder of zinc in the environment binding, zinc oxide and additives target, characterized in that the binder contains glorious-modified alkyd resin having a pH of not more than 20 mgKOH/g and plasticized klorparaffiner wax in the medium of organic solvent in the following ratio, wt.%:

Glorious14,0-19,0
The alkyd resin with acidity not
more than 20 mgKOH/g6,0-9,0
Korparativy wax7,0-11,0
Organic solventThe rest,

as the target additives contains polymerized amphoteric oil, bentonite organophilic and, optionally, graphite in the following ratio, wt.%:
Superfine powder zinc48,8 is 69.6
Bentonite organophilicof 0.2-0.3
Polymerized amphoteric oilof 0.2-0.3
Graphite4.0 to 4.5
Zinc oxide0,9-1,2
The specified binderrest



 

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2 tbl, 16 ex

FIELD: chemistry.

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.

4 tbl

FIELD: chemistry.

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

FIELD: chemistry.

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

FIELD: chemistry.

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

Mastic // 2368637

FIELD: construction.

SUBSTANCE: invention is related to materials for protection against corrosion of pipeline metal surfaces and electric cables in metal casing, and also to materials for sealing of accumulators. Mastic based on asmol contains oil dissolvent, ASM glue, plasticiser, bivinyl styrene thermoplastic elastomer DST and syndiotactic 1.2 polybutadiene. Mastic may additionally contain chalk.

EFFECT: mastic has high resistance to loads due to increase of its strength characteristics, when mastic is applied onto polymer base, possibility is provided to use tape at low temperatures (up to -20°C).

2 cl, 1 tbl

FIELD: construction.

SUBSTANCE: filming agent represents distillation residue of 4,5,6,7-tetrahydroindole production.

EFFECT: filming agent is highly adhesive to metals and protects them efficiently against corrosion.

1 cl, 4 ex

Coating composition // 2363769

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for coating base metals, to coating obtained from the said compositions, as well as to the method of obtaining the said compositions. The coating composition contains an aqueous mixture, containing particles, stable towards acids, and one or several fluoro-acids, where content of particles stable towards acids ranges from 0.005 to 8 wt % in terms of dry mass. The base metal coating contains particles, stable towards acids, attached to the base by a metal oxide matrix. Specific density of the base metal coating ranges from 5 to 50 mg/ ft2 (53.82 - 538.2 mg/m2). The method of producing the composition involves production of particles stable towards acids and one or several fluoro-acids, mixture of the said particles stable towards acids and one or several fluoro-acids in water, where pH of the coating composition ranges from 2 to 7, and content of particles stable towards acids in the coating composition ranges from 0.005 to 8 wt % in terms of dry mass.

EFFECT: invention allows for production of coating compositions, which significantly reduce the level corrosion of objects, containing several base metals.

40 cl, 3 dwg, 7 tbl, 20 ex

FIELD: chemistry.

SUBSTANCE: epoxy composition is intended for obtaining anti-corrosion coatings on products and reservoirs from concrete, reinforced concrete, metallic constructions. Composition includes following components, with their ratio, wt %: 47.4-54.4 of epoxy-diane resin ED-20, 2.8-4.3 of modifier, 19.6-27.0 of solvent, 21.7-22.8 of amine hardener. As modifier composition contains polyisocyanate based on 4,4'-diphenylmethandiisocyanate. As solvent composition contains solvent R-4. As hardener composition contains aromatic polyamine "Aramine".

EFFECT: increase of water-resistance and resistance of composition to impact of acids and alkalis.

2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: anticorrosive composition for primer coat contains finely dispersed powder of zinc, polystyrene and/or styrene copolymer with rubber used as a binding agent, aromatic solver and 4,4'-diphenylmethanediisocyanate additionally. The method of anticorrosive treatment is carried out by applying over preliminary treated surface at least one primer coat prepared from the mentioned above composition with further applying at least one finishing coat.

EFFECT: preparation of one-package anticorrosive composition, flowability and plasticity of which is unchanged in water presence, providing high anticorrosive and chemical stability of treated surface designed for using articles in the conditions of continuous contact with water medium and atmosphere, having of higher mechanical and adhesive properties and providing with decreased material consumption during coat formation.

3 cl, 5 tbl, 5 ex

FIELD: metallurgy.

SUBSTANCE: method consists in applying coating on polymer composition onto metal surface, where polymer composition is made on base of reactive resins, and in successive solidifying; in addition, there is used polymer composition containing micro-capsules with corrosion inhibitor preliminary introduced in micro-capsules from inert sorbent and/or inert sorbent with polymer shell of 1-100 mcm size. The micro-capsule with corrosion inhibitor used for protection of metal surfaces is made out of inert sorbent with polymer shell into pores of which corrosion inhibitor is impregnated and/or the capsule is covered with polymer shell produced by means of sedimentation of film forming substance from solution.

EFFECT: method facilitates upgrading degree of anticorrosion protection of coated metal surface due to continuous dozed release of inhibitor during operation of coating and due to constancy of inhibitor properties in coating; also method increases adhesion and strength of coating, reduces inhibitor consumption and localises selectivity of its effect.

9 cl, 2 dwg, 1 tbl, 4 ex

Heat protective dye // 2245350

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

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