Radiation-cured formulations containing silicic acid and dispersant, improving protection of metal substrates from corrosion

FIELD: chemistry.

SUBSTANCE: formulation composition contains: A) 5-95 wt % at least one radiation-curable resin, B) 5-25 wt % silicic acid, C) 0.1-10 wt % at least one adhesion promoter, D) 5-90 wt % at least one radiation-curable reactive diluent, E) 0.5-5 wt % at least one dispersant. The adhesion promoter is selected form phosphoric acid and/or phosphonic acid and/or products of reaction thereof with functionalised acrylates. The composition can additionally contain photoinitiators, pigments and additives, selected from diffusion promoting agents, delustering agents and degassing agents. The compositions are used as a primer, an intermediate layer, coating varnish and/or clear varnish, as well as for making coatings via a coil coating technique.

EFFECT: coatings have flexibility, thereby providing excellent protection of metal substrates from corrosion.

18 cl, 2 tbl, 6 ex

 

The invention relates containing silicic acid formulations with (approval under the influence of radiation, which in the hardened state to provide special protection of metallic substrates against corrosion.

Recipe by curing under the influence of radiation known. The ethylene-unsaturated prepolymers are described, for example, in the book RCT Glaring (Hrsg.), "Chemistry and Technology of UV and EB Formulations for Coatings, Inks and Paints", Vol.II. SITA Technology, London 1991, for example, on the basis of epoxyacrylate (pages 31 to 68), urethane-acrylates (pages 73 to 123) and melamine acrylate (page 208 of 214). In the patent literature also frequent mention of such formulations, as examples, mention should be made of Japanese patent JP 62110779 and European patent EP 947565.

When applying coatings on metal substrates formulations, curing by radiation, has a problem because in the process of shrinkage possible loss of adhesion. Such substrates are often used promoting adhesion of a substance containing phosphoric acid. The examples of this are the U.S. patents US 5,128,387 (coating on beer cans) and Japan JP 2001172554 (coating at different banks).

As you know, epoxyacrylate beautifully kept on metal substrates and give good protection against corrosion. The disadvantage of such coatings, however, is ostoic in a low ability to warp after curing. For some coating technologies, for example, coating the rolled material, the ability to deform the workpiece without cracks in the pavement is crucial. In addition, due to the presence of aromatic components such coatings are prone to yellowing.

In the international application WO 03/022945 described solidified under the influence of radiation recipes low viscosity for metal substrates with the resin with radiation hardening, monofunctional reactive diluents and acidic substances that promote adhesion. Used resin is a product offered by different market participants.

European patent EP 902040 also contains information on formulations, capable of hardening under the influence of radiation. It describes a urethane(meth)acrylates with monofunctional esters of unsaturated carboxylic acids, preterition alcohols containing carbon cycle or a heterocycle.

The use of silicic acid in the varnishes described, for example, in the brochure "AEROSIL für Lacke und Farben" (No. 68 series Pigmente, 3rd edition, was released in December 1989, Degussa AG). In it, depending on the recipe, it's recommended to use from 0.5 to 1% silicic acid (AEROSIL R 972) to improve corrosion resistance (p.12).

As a rule, to create dispersions of solids (in the example, fillers, dyes or pigments) in liquid media, in order to achieve effective dispersion, using dispersing agents.

Dispersing agents are also used in the manufacture of paints, varnishes, printing inks and other materials intended for coating.

The goal was to find the solidified under the influence of radiation formulation, which, on the one hand, after coating can be deformed, i.e. they have the flexibility, but which, on the other hand, provide excellent protection of metallic substrates against corrosion.

Unexpectedly it was found that the resistance of varnishes derived from a recipe with radiation hardening, the metal substrates increases, if the formulation contains at least 5 wt.% silicic acid, and optionally dispersing agents.

The subject of this invention is the formulation by solidification under the influence of radiation, which includes

A) at least one resin capable of hardening under the influence of radiation,

B) at least 5 wt.% silicic acid relative to the entire formulation,

C) at least one adhesion promoter,

D) at least one reactive diluent able to harden under the influence of radiation,

(E) at the ore, one dispersing agent

F) optionally - photoinitiator,

G) optionally a pigment and other additives.

The manufacture of solidified under the influence of radiation of the resin (A), oligomers and/or polymers are described for example in "Radiation Curing in Polymer Science & Technology, Vol I: Fundamentals and Methods" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993, ch.5, str-236, "Lackharze", D.Stove. W.Freitag. Hanser-Verlag, Wien, 1996, p.85, 94-98, 169 and 265 and in the European patent EP 947565.

Depending on the underlying raw material distinguish, for example, epoxyacrylate, Polyesterimide, preferability, polyacrylate-acrylates and urethane acrylates. The latter can be based, for example, a complex or polyethers. Also known corresponding methacrylates. Other suitable polymerization group is epoxides and vinyl ethers. They can also be connected with various basic resins.

The amount in the recipe varies from 5 to 95 wt.%, preferably from 10 to 39 wt.%. A particularly preferred complex polyetherurethane-acrylates. Examples of them is VESTICOAT EP 110 IBOA (commercial product of Degussa, Coatings & it composed of pretreatment (, disfunctionally complex polyetherurethane-acrylate) and EBECRYL 1256 (a commercial product of the company Cytec).

In the case of silicic acid In) distinguish between precipitated silicic acids and pyrogenic silicic acids.

From the point of the vision is the output of major are precipitated silicic acid. They are synthesized from aqueous solution of alkaline silicate by precipitation of mineral acids. The formation of primary colloidal particles, which upon further reaction aglomerados, and ultimately grow together in agglomerates. Pores powder voluminous forms come in sizes from 2.5 to 15 ml/g, and specific surface area of these forms is 800 m2/, In the framework of the invention the precipitated silicic acid is used in the form of dry powders. They are available on the market, for example, by the company Degussa under the trade name SIPERNAT.

The concept of "pyrogenic silica" combine highly dispersed silicic acid, which is produced by hydrolysis in the flame. When silicon tetrachloride is decomposed in the flame detonating gas. On almost devoid then, the surface of the pyrogenic silicic acid has less hydroxyl groups than on the surface of the precipitated silicic acid. Due to the hydrophilicity of synthetic silicic acid, due to the silanol groups, these acids are often subjected to additional chemical processing of various kinds, in which the hydroxyl group can react, for example, with organic CHLOROSILANES. Due to this arise modified, for example, hydrophobic surfaces, which significantly expand the range of possible Avenue is the use of silicic acid. Pyrogenic silicic acid available on the market, for example, by the company Degussa under the trade name AEROSIL™.

Important indicators such silicic acid is, for example, specific surface area (BET method), carbon content, apparent density after compaction, loss during drying, the content of SiO2after calcination, the pH value of the dispersion, surface tension, and also other additional components (e.g., aluminum, iron, titanium and hydrochloric acid). In the General case of pyrogenic silicic acid are characterized by the following indicators: BET from 30 to 380 m2/g; preferably from 70 to 250 m2/g, a pH of from 2.5 to 11, preferably from 3 to 7.

According to the invention is particularly preferable to apply the pyrogenic silicic acid. Particularly preferred hydrophobic pyrogenic silicic acid, and from them it is preferable to apply AEROSIL™ R 9200 manufactured by Degussa GmbH, Germany.

The proportion of silicic acid) in the entire recipe is 5-25 wt.%, preferably 10-20 wt.%. According to the invention used in the form of powders.

Substances that promote adhesion) for formulations with radiation hardening for metal substrates consist usually of phosphoric acid and/or phosphonic acid and/or products of their reactions (e.g., esters) function is alizirovannaya acrylates. While the available group of phosphoric acid are directly responsible for the adhesion to the metal acrylate groups provide education composite matrix of the coating. Such products are also described in international patent application WO 01/98413, in Japanese patents JP 08231564 and JP 06313127.

Typical commercial products are EBECRYL 169 and 170 production Cytec, ALDITOL Vxl 6219 production VIANOVA, CD and CD 9050 9052 project production Sartomer, SIPOMER PAM-100, SIPOMER PAM-200 and SIPOMER PAM-300 produced by Rhodia, and GENORAD 40 production Rahn. Number) in the formulation is from 0.1 to 10 wt.%, preferably from 1 to 5 wt.%.

Reactive diluents with radiation curing (D) and their production are described for example in "Radiation Curing in Polymer Science & Technology, Vol I: Fundamentals and Methods" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993, Chapter 5, str-240. As a rule, they are compounds containing acrylates or methacrylates, which at room temperature are in the liquid state and can thus reduce the overall viscosity of the formulation. Examples of such products are isobutylacetate, hydroxypropylmethacrylate, trimethyloctadecylammonium, tetrahydrofurfurylamine, phenoxyethylacrylate, trimethylolpropane, dipropyleneglycol, tripropyleneglycol, hexaniacinate, pentaerythritoltetranitrate, Laurier the lat, and propoxycarbonyl or ethoxylated variants of these reactive diluents, but also pretensiously reactive diluents, such as EBECRYL 1039 (Cytec), and others. In addition, it is possible to use other liquid components, which are able to participate in the reaction under the conditions of radical polymerization, for example, vinyl ethers or allyl ethers. The number of (D) in the formulation is from 5 to 90 wt.%, preferably from 10 to 70 wt.%

As the dispersing agent (E) can be applied many different substances. Apart from very simple low molecular weight compounds, such as lecithin, fatty acids or their salts or of apes, as a dispersant can also be applied to more complex molecular structure. In this capacity are used, in particular, amidofunctional and amidofunctional system.

In U.S. patent US 4,224,212, European patent EP 0208041, in international applications WO-00/24503 and WO-01/21298 described, for example, dispersing agents based on polyamines, modified complex polyesters. In the German patent described salts of polyamines and their use as dispersing agent for pigments and fillers. Dispersing agents are used in concentrations of from 0.5 to 5 wt.% relative to the entire formulation. Examples of such dispersant is TEGOSDISPERS 610, 630, 650, 51, 652, 653, 655, 700 and 710, LA-D 1045, LAD 868, (all manufactured by Degussa, Coatings & it composed of pretreatment (, TEGO), DIPERBYK 110, 168, 171, 174, 180 and 190, as well as HORDAPHOS 1306, HYDROPALATE and HOSTAPHAT OPS (Clariant).

Photoinitiator F) and their production are described for example in "Radiation Curing in Polymer Science & Technology, Vol II: Photoinitiating Systems" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993. Often it is α-hydroxyketone or their derivatives. Photoinitiator, if they are used, are present in quantities of from 0.2 to 10 wt.%.

Appropriate pigments (G) recipes by curing under the influence of radiation is described, for example in "Radiation Curing in Polymer Science & Technology, Vol IV: Practical Aspects and Application of" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993, Chapter 5, p.87-105, they may be present in amounts from 1 to 40 wt.%. Examples of pigments that protect against corrosion, can be found, for example, in tables of pigments and fillers, O. Luckert, Vincentz Verlag Hannover, 6. Edition 2002. As examples we can mention: SHIELDEX WITH 303 (Grace Davison) and HALOX Coil X 100, HALOX Coil X 200 and HALOX CW 491 (Erbsloh), HEUCOPHOS SAPP or ZPA (Heubach), K-White TC 720 (Taus) and HOMBICOR (Sachtleben). Of course, you can also use simple inorganic salts, such as zinc phosphate.

Other additives G) for formulations with curing under the influence of radiation are available in different formulations for different purposes, for example, this means contributing to the spreading means for katirovki for degassing and other Some the th of them described in the brochure "SELECTED DEGUSSA PRODUCTS FOR RADIATION CURING AND PRINTING INKS" ("featured products "Degussa" for curing under the influence of radiation and printing inks"), published Tego Coating &Ink Additives, Essen, 2003. In the case of the presence of such additives, their number varies from 0.01 to 5 wt.%.

Apply formula with curing under the influence of radiation can be well-known in the technology of paint and varnish coating methods, for example, applying a scraper, rolling, spraying or sprinkling.

As the metal substrate can be used primarily steel, as an option - subjected to preliminary processing, but also aluminum and other metals or alloys, which should provide coverage for reasons of corrosion protection.

Hardening occurs in the presence of photoinitiators under the influence of ultraviolet light and in the absence of photoinitiators under the influence of electron radiation. Properties of the hardened varnishes not practically depend on the method of curing.

Curing under UV light and the UV lamp is described, for example in "Radiation Curing in Polymer Science & Technology, Vol I: Fundamentals and Methods" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993, Chapter 8, str-503.

Curing under the influence of the electron beam and the agents of solidification under the influence of electron radiation is described, for example in "Radiation Curing in Polymer Science & Technology, Vol I: Fundamentals and Methods" authorship J.P.Fouassier, J.F.Rabek, Elsevier Applied Science, London and New York, 1993, Chapter 4, str-225 and in Chapter 9, p.53-555.

In addition, the subject invention is the application of the formulas to hardening under the influence of radiation, which includes

A) at least one resin capable of hardening under the influence of radiation,

B) at least 5 wt.% silicic acid relative to the entire formulation,

C) at least one adhesion promoter,

D) at least one reactive diluent able to harden under the influence of radiation,

E) at least one dispersing agent

F) optionally - photoinitiator,

G) optionally a pigment and other additives,

as a primer, an intermediate layer, the surface varnish and/or clear varnish.

The coating according to the invention can be applied either alone or as a layer in the composition of the multilayer coating. It can be applied, for example, as a primer, an intermediate layer or as a top coat or clear varnish. Solidification of layers under or over coating according to the invention, may be either a conventional thermal image, or also under the influence of radiation.

Also the subject of the invention is the application of the formulas to hardening under the influence of radiation, which includes

A) at least one resin capable of hardening under who is esteem radiation

B) at least 5 wt.% silicic acid relative to the entire formulation,

C) at least one adhesion promoter,

D) at least one reactive diluent able to harden under the influence of radiation,

E) at least one dispersing agent

F) optionally - photoinitiator,

G) optionally a pigment and other additives,

for the manufacture of coatings according to the method of roll coating.

Another object of the present invention is a coating containing formulations according to the invention.

Without further detailed presentation can be considered that the specialist can use the above description in full. Therefore, the preferred options and examples should be considered as illustrations, descriptions, their statement does not impose any restrictions.

Below is given a more detailed explanation of the present invention based on examples. Alternative versions of the present invention can be obtained similarly.

Examples:

Working materialsProduct description manufacturer
VESTICOATEP 110/IBOAResin with a hardening under the influence of the teachings, Degussa AG, Coatings & it composed of pretreatment (dissolved in 25% isobutylacetate
LAROMER 8887Trimethylammoniumchloride, BASF, reactive diluent able to harden under the influence of radiation
IBOAIsobutylacetate, Cytec, monofunctional reactive diluent
ADDITOLVXL6219The adhesion promoter containing phosphoric acid, Sartomer
IRGACURE 184Photoinitiator, Ciba
AEROSIL R 9200Pyrogenic silicic acid, Degussa, BET about 170 m2/g, the content of SJ02 after calcinations >99.5%pure, pH 3-5, No. SA-44-9
PZ 20 Zinkphosphatthe zinc phosphate, SNCZ
Tegosdispers 652Dispersing agent, Degussa AG, Coatings & it composed of pretreatment (, TEGO

(A) General card making

The resin is mixed with a reactive diluent, dispersing agent and silicic acid and using a Dispermat mixer for 20 minutes at 9000 rpm form the dispersion. Then, using a high-speed stirrer (2000 rpm), add an adhesion promoter.

a) Curing under impacts the quality of the electron radiation: ready-to-use recipe using a squeegee applied to the steel sheets (panel Q R36, raw steel sheet), and then subjected to curing using electron emitter (5 Mrad, ESI).

b) Curing under UV radiation: to the above mixture using a high speed stirrer (2000 rpm) add 3% IRGACURE 184. ready-to-use recipe using a squeegee applied to the steel sheets (panel Q R36, raw steel sheet), and then subjected to curing with UV lamp (3 m/min, Minicure, mercury lamp of 80 W/cm, manufacturer Technigraf).

All data in wt.% given relative to the total weight of the formulation.

ExperienceI*2*3*4*5*6
Vesticoat EP 110/IBOA20,020,020,020,020,020,0
IBOA22,529,519,526,526,519,5
Laromer 888727,534,5 27,534,534,527,5
Aerosil VP 920015,01,015,01,01,015,0
ADDITOLVXL62195,05,05,05,05,05,0
IRGACURE 184--3,03,0--
PZ2010,010,010,010,010,010,0
Tegosdispers 65233
Test with bulk salt for 144 h (penetration [cm])9,8 >1510,2>15>15the 4.7
Squeezing by Eriksen [mm]8,510,59,51110,59
Layer thickness [µm]28-3231-3427-3328-3125-2728-29
* Control experiments are not relevant to the invention

Curing 1,2 and 5,6 held electronic radiation, and 3 and 4 - ultraviolet radiation.

All varnishes demonstrate sufficient flexibility (squeezing the Eriksen more than 5 mm). Sufficient protection against corrosion after testing with bulk salt for 144 h (DIN 53167), with the spread of corrosion less than 5 cm, giving only formula 6 according to the invention.

1. Prescription composition for protecting metal substrates from corrosion able to harden under the influence of radiation, consisting of:
A) from 5 to 95 wt.%, at least one resin capable of hardening under the influence of radiation,
B) from 5 d is 25 wt.% silicic acid relative to the total composition,
C) from 0.1 to 10 wt.%, at least one adhesion promoter selected from phosphoric acid and/or phosphonic acid and/or products of their interaction with functionalized acrylates,
D) from 5 to 90 wt.%, at least one reactive diluent able to harden under the influence of radiation,
E) from 0.5 to 5 wt.%, at least one dispersing agent,
F) optional photoinitiator,
G) optionally pigments and additives selected from the funds that contribute to spreading, matting and means for degassing.

2. The composition according to claim 1, characterized in that the resin (A) it contains epoxyacrylate, complex preferability, simple preferability and urethane-acrylates, alone or in mixtures.

3. The composition according to claim 1, characterized in that the resin (A) it contains a complex polyetherurethane-acrylates.

4. The composition according to claim 1, characterized in that the amount of resin (A) is from 10 to 39 wt.%.

5. The composition according to claim 1, characterized in that as silicic acid) it contains precipitated silicic acid.

6. The composition according to claim 5, characterized in that it contains a precipitated silicic acid with a volume of pores of from 2.5 to 15 ml/g and a specific surface area of from 30 to 800 m2/year

7. The composition according to claim 1, characterized in that as silicic acid) it contains progeny the silicic acid.

8. The composition according to claim 7, characterized in that as silicic acid) it contains a hydrophobic pyrogenic silicic acid.

9. The composition according to claim 1, characterized in that the proportion of silicic acid) in the entire composition is 10-20 wt.%.

10. The composition according to claim 1, characterized in that it contains silicic acid in powdered form.

11. The composition according to claim 1, characterized in that the reactive diluent (D) is selected from isobutylacetate, hydroxypropylmethacrylate, trimethylammoniumchloride, tetrahydrofurfurylamine, phenoxyethylacrylate, trimethylolpropane, dipropyleneglycol-diacrylate, tripropyleneglycol, hexaniacinate, pentaerythritoltetranitrate, laurelcrest, and/or propoxycarbonyl or ethoxylated variants of these reactive diluents, and/or pretensioner reactive diluents.

12. The composition according to claim 1, characterized in that the number of (D) in the composition is from 10 to 70 wt.%.

13. The composition according to claim 1, characterized in that the dispersing agent (E) is a lecithin, fatty acids or their salts or alkylphenolethoxylate.

14. The composition according to claim 1, characterized in that it contains a dispersing agent based on polyamines, modified complex polyesters.

15. Application of the formulation, capable of saturd the VAT under the influence of radiation, consisting of:
A) from 5 to 95 wt.%, at least one resin capable of hardening under the influence of radiation,
B) from 5 to 25 wt.% silicic acid relative to the total composition,
C) from 0.1 to 10 wt.%, at least one adhesion promoter selected from phosphoric acid and/or phosphonic acid and/or products of their interaction with functionalized acrylates,
D) from 5 to 90 wt.%, at least one reactive diluent able to harden under the influence of radiation,
E) from 0.5 to 5 wt.%, at least one dispersing agent,
F) optional photoinitiator,
G) optionally pigments and additives selected from the funds that contribute to spreading, matting and means for degassing,
as a primer, an intermediate layer, the surface varnish and/or clear varnish.

16. The application indicated in paragraph 15, and in the prescription includes the original substance according to one of claim 2 to 14.

17. The use of prescription composition capable of hardening under the influence of radiation, consisting of:
A) from 5 to 95 wt.%, at least one resin capable of hardening under the influence of radiation,
B) from 5 to 25 wt.% silicic acid relative to the total composition,
C) from 0.1 to 10 wt.%, at least one adhesion promoter selected from phosphoric acid and/or phosphonic to the slots, and/or products of their interaction with functionalized acrylates,
D) from 5 to 90 wt.%, at least one reactive diluent able to harden under the influence of radiation,
E) from 0.5 to 5 wt.%, at least one dispersing agent,
F) optional photoinitiator,
G) optionally pigments and additives selected from the funds that contribute to spreading, matting and means for degassing,
for the manufacture of coatings according to the method of roll coating.

18. The coating containing prescription composition according to one of claims 1 to 14.



 

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2 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: method involves natural hardening at ambient temperature of an ethynol varnish-based polymer composition. The ethynol varnish-based polymer composition contains ethynol varnish, expanded-clay dust and divinyl styrene latex. After applying the coating onto the protected surface, the coating is exposed to intense ultraviolet beams for 15-90 minutes. Also, the distance to the exposed surface is equal to 0.4-0.7 m.

EFFECT: method cuts hardening time in a wide temperature range.

2 cl, 1 ex

FIELD: construction.

SUBSTANCE: protective-mechanical coating of monolithic heat insulation of heating networks, comprising a heat insulation material and glued above several coating layers of a rolled material, being hydraulic insulation, besides, the upper coating layer is glass tissue, which is glued onto the heat insulation by ethynol enamels on the basis of ethynol varnish with higher content of latex SKS-65, and the protective hydraulic insulation outer layer is made of a composition on the basis of the ethynol varnish with lower content of latex SKS-65.

EFFECT: higher quality of a protective-mechanical coating of monolithic heat insulation of heating networks due to increased strength and hydraulic insulation.

FIELD: metallurgy.

SUBSTANCE: agent with pH of 1 to 3 is intended to be applied as primary coating on metal substrates and contains water, as well as a) ions of fluorine complexes of titanium and/or zirconium, b) at least one corrosion-protective pigment, c) at least one water-soluble or water-dispersed polymer in the above pH range, which has pH 1-3 in water solution with concentration of 50 wt %. At that, c) includes i) links at least of two different ethylenically unsaturated monomers chosen from the group including acrylic acid, methacrylic acid, composite esters of acrylic acid and composite esters of methacrylic acid; at that, at least one monomer is chosen from the group including composite esters of acrylic acid and composite esters of methacrylic acid, and ii) 0.5 to 4.0 mol % of monomeric links with groups of phosphoric acid or ester of phosphoric acid. Application method of coating on metal strip involves application of the above agent of such thickness so that a coating with thickness of 0.5 to 10.0 mcm is formed as a result of its curing performed by heating of metal strip to the temperature of not more than 150°C during not more than 60 seconds.

EFFECT: improving properties of corrosion-resistant protection and adhesion of coating to organic varnishes.

17 cl

FIELD: chemistry.

SUBSTANCE: material contains the following in wt %: calcium alkylbenzosulphonate 6-10, higher C17-C20 aliphatic amines 4-8, fusion of solid petroleum hydrocarbon ceresin and butadiene styrene thermoplastic elastomer in ratio 9:1 3-4, C8-C12 alkylphenol 2.5-4.5, paint and varnish polymeric petroleum resin 28-32, butadiene styrene thermoplastic 1.5-2.0, xylene 22-30, nefras - up to 100.

EFFECT: improved protective properties with respect to ferrous and non-ferrous metals in corrosive-aggressive media with considerable reduction of film thickness to 50 mcm, prevention of accumulation of dust particles and dirt.

2 tbl

FIELD: construction.

SUBSTANCE: composite material as a protective coating is made of a composition containing an aluminium powder, a heat resistant powdery filler, a heat resistant grain material, liquid glass as the binder, and also a silicon-containing material. The heat resistant powdery material in the composition is chamotte with size of particles from 20 to 50 mcm. The heat resistant grain material in the composition is chamotte with size of particles from 0.3 to 1.5 mm. The silicon-containing material in the composition is ferrosilicon FS75 with grain structure from 0.3 to 1.5 mm.

EFFECT: composite material provides for high strength, high heat resistance and durable efficient protection against high-temperature corrosion of metal products at high temperatures of their operation.

1 tbl

FIELD: chemistry.

SUBSTANCE: anticorrosion protective polymer coating is made from a composition containing film-forming ethynol lacquer, pearlite filler and a plasticiser which is divinyl styrene latex SKS-65.

EFFECT: high quality of the anticorrosion protective polymer coating.

FIELD: chemistry.

SUBSTANCE: invention relates to a method of coating aluminium substrates through anionic electrodeposition of phosphated epoxy resin. The method of coating an aluminium substrate is realised by passing electric current between the substrate, which acts as the anode, and a cathode which is in electric contact with an electrodeposition bath containing an aqueous dispersion a base-neutralised resin composition containing a phosphated epoxy resin which does not form gel and which contains a mixture of a product of reaction of one or more polymer epoxy-compounds with phosphoric acid and with organophosphonic acid and/or organophosphinic acid, wherein the aqueous dispersion contains a curing agent. Also disclosed is an aqueous resin dispersion for coating a substrate, containig: (a) a base-neutralised resin composition containing a phosphated epoxy resin which does not form gel and which contains a mixture of a product of reaction of one or more polymer epoxy-compounds with phosphoric acid and with organophosphonic acid and/or organophosphinic acid, and (b) azole containing a sulphur atom.

EFFECT: coating exhibits low tendency to forming point holes.

14 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: paint with thermo-, fire-protective properties contains (wt %): binder based on acrylic (co)polymers and/or silicone resins and organosoluble polyurethanes - (20-40), filler in form of a mineral component - (10-30), antipyrene additive - (10-20), modifying additive in form of ceramic and/or glass microspheres with diameter of 20-150 mcm -(10-30) and an organic solvent - the rest. The paint composition additionally contains bentonite powder, intercalated with cobalt Co2+ ions and/or cerium Ce3+ ions in amount of 3-7 wt %.

EFFECT: invention increases stability of the formed protective paint coating to thermal-oxidative reactions, improves environmental safety, fire-resistance of the protective coating and endows said coating with bactericidal properties.

7 cl, 2 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: the invention relates to preventing metal corrosion with the use of paint coatings. The invention aims to find high-effective low-hydrolising phosphonate pigments. The result is achieved by the method of producing core anticorrosive pigment by interreacting hydroxyethylidene diphosphonic acid with calcium carbonate in a water medium. The mass ratio of hydroxyethylidene diphosphonic acid to calcium carbonate is 0,5-7,0 : 93,0 - 99,5 respectively. The mass ratio of the said mixture to water is 2 : 1 respectively. The method allows to obtain core phosphonate pigment with the structure comprising a low-hydrolising core and a hydrolising phosphonate shell which provides the effective anticorrosive properties of the pigment.

EFFECT: production of pigment with better anticorrosive properties than calcium hydroxyethylidene diphosphophonate and toxic zinc tetraoxychromate.

2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention can be used in producing pigments and/or filler materials for paper, paint and plastic. The composite contains particles of an inorganic and/or organic pigment and/or filler having equivalent diameter of 0.2-100 mcm, coated at least partially with a composition containing calcium carbonate particles having equivalent diameter less than 200 nm, and binder based on copolymers containing monomers in form of one or more dicarboxylic acids and one or more monomers from a group comprising diamines, triamines, dialkanolamines or trialkanolamines. Particles of the inorganic pigment and/or filler are selected from talc, mica or mixtures thereof. Particles of the organic pigment and/or filler are selected from polyethylene, polypropylene, polyethylene terephthalate or polystyrene. To obtain the composite, particles of the pigment and/or filler are mixed with a calcium carbonate composition, mainly in form of an aqueous suspension, and binder is added and the mixture is homogenised. In another version, the binder can be added to particles of the pigment and/or filler or to the calcium carbonate composition. Calcium carbonate is ground using ball mills, jet mills, burr mills or combination thereof cyclones and sieves.

EFFECT: obtained composites have high opacity, whiteness and lustre, high capacity for printing and resistance to segregation.

57 cl, 11 dwg, 4 ex

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