SUBSTANCE: invention relates to paint materials and can be used in mechanical engineering to protect metal surfaces operating at high temperatures, in highly corrosive conditions as well as at home and in industry. The heat-resistant enamel contains organoalkoxysilane-based methyl phenyl siloxane resin of general formula:
EFFECT: methyl phenyl siloxane resin used does not contain Cl-containing impurities, which improves environmental friendliness of the composition.
3 cl, 1 tbl
The invention relates to a paint and varnish materials and can be used in mechanical engineering to protect metal surfaces operating at elevated temperatures, under conditions of high corrosiveness of the environment, as well as in everyday life (colouring furnace systems, roofs, metal doors), and industry (for protective coloration engines and exhaust systems of automobiles and tractors, for the painting of equipment and pipelines in the oil and gas industry, flues and furnaces for the incineration of waste for thermal insulation of building structures.
Known composition on the basis of polymethylphenyl siloxane resin modified pentaftalevyh varnish (lacquer KO-075)containing aluminum powder, carbon black, iron oxide, allowing to obtain uniform coverage, working in conditions of constant heat (SU 169614, IPC C09D 183/06, publ. 1991).
Known composition, which includes polymethylphenyl siloxane resin, pentaftalevyh resin (PF-060); bitumen, a mixture of monoethanolamine with aminopyrine, the solvent is toluene, xylene or solvent, pigment, aluminum powder, red iron oxide, or zinc dust (EN 2028352, IPC C09D 184/04, C09D 5/086 publ. 1995)
Known composition, which includes polymethylphenyl siloxane resin, ethyl silicate binder, black pigment, talc, mica; quartz; Aerosil, an organic solvent (EN 2106378, M IS TO C09D 183/04, C09D 5/08, C09D 183/04, C09D 183:02 publ. 1998)
The disadvantage of the above compositions is insufficient heat resistance of the coating.
Closest to the proposed invention in quality and composition is a composition for heat-resistant coatings containing polymethylphenyl siloxane resin, pentaftalevyh lacquer, polymer isobutylacetate, heat-resistant pigment, filler - porous silicate or a mixture of mica with porous silicate, rheological additive, thickener, panel or tixosil and an organic solvent in the following ratio, wt.%:
|the polymer isobutylacetate||5-7|
|the specified filler||5-10|
(EN 2378309, IPC C09D 183/06 C09D 5/08 publ. 2010; EN 2400509, IPC C09D 183/06 C09D 5/08, C09D 133/08, publ. 2010)
The objective of the decision is of which sent the invention, is the increase in environmental performance, heat resistance and durability of the coating, the expansion of the scope and cost reduction composition.
This is achieved in that the composition for heat-resistant coatings containing silicone resin-based methylphenylsiloxanes, the polymer of butyl methacrylate, pentaftalevyh varnish, heat-resistant pigment, micronized filler, thickener, rheological additive - bentonite clay and an organic solvent, according to the invention as a silicone resin contains methylphenylsiloxane resin-based organoalkoxysilanes General formula:
|n, m, k=1,2;||R'=Me, H;|
|a=0.1 to 33;||R2 =Me.|
in the following ratio, wt.%:
|Specified methylphenylsiloxane resin||3,5-13,0|
|The polymer of butyl methacrylate||5,0-7,0|
|Heat-resistant pigment||of 10.5 to 15.0|
In this case, the filler composition comprises a micro-talc and microslide, and as a thickener, Angel.
A distinctive feature of the proposed resin is that the raw material for its production are alkoxysilane. Therefore, it is environmentally friendly, as it does not contain Cl-containing impurities, unlike resins, which are obtained on the basis of CHLOROSILANES, e.g the measures resin TO 139-297 on THE 2228-440-05763441-2004, 60%solution of polymethylphenylsiloxane in xylene or toluene or resin polymethylphenylsiloxane on THE 2228-277-05763441-99 used in all the above compositions.
This resin is made in accordance with the patent RU 2428438 (IPC C08G 77/06, C08G 77/38, publ. 10.09.2011) under the name methylphenylsiloxane resin on THE 2228-060-00209013-2008, manufacturer gnihtemos, and has the following specifications:
|Appearance||The solid product from light yellow to brown|
|The ratio of fragments (PhSiO1,5):(Me SiO1,5)||2:1|
|Mass fraction of volatile substances,%, no more||2,0|
|Softening point, °C||65|
|The output of the inorganic residue according to TGA||78|
|The onset temperature of degradation, °C||510|
The composition for the protective coating was prepared as follows:
In the estimated amount of solvent loaded into a reactor equipped with a mixer, dissolve the estimated number IU ifanillinois resin and isobutylacetate polymer, after dissolution of polymers download thickener and rheology additive, the mixture is dispersed to a homogeneous mass. Next download pentaftalevyh lacquer, filler, heat-resistant pigment and is dispersed to obtain a homogeneous mass.
The proposed composition of the heat-resistant composition is focused on the use of components manufactured on an industrial scale, with application to obtain standard equipment paint and varnish industries. It can be applied to the surface to be protected by any of the existing methods: brush, roller, dipping, air or airless methods of atomization.
Compounds for experimental testing of the invention and their physical and mechanical properties are given in the table.
As butylmethacrylate polymer used Degalan LP 65/12 innovations for this LP 65/12); Degalan LP 64/12 innovations for this LP 64/12) (manufacturer Evonik ROHM GmbH, Germany) and Dianal BR-116 (Dianal BR) (manufacturer MITSUBISHI RAYON CO., LTD., Japan)
As pentaftalevyh varnish used Varnish PF - 053 (TU 2311-001-589-484-36-2003) or Varnish PF-060 (TU 2311-001-52140236-2001), which is a solution of modified pentaftalevyh resin in organic solvents.
As the heat-resistant pigment used aluminum powder (GOST 5494-95), to obtain compositions of different colors as heat-resistant pigments,can also be used in various heat-resistant pigments, for example, pigment black heat resistant (THE 2364-017-00303835-96); or pigment blue (10446 Blu) or pigment green (1084 Green) firm Cerdes Corp. (USA).
As a rheological additive used Benton 34 or, Benton SD-1 F. Rheox, can be used other inorganic substances containing montmorillonite (bentonite clay).
As a solvent used xylene oil (GOST 9410-78), oil solvent (TU 38.101809-90), toluene oil (GOST 14710-78).
As the filler used microslide 10-80 (TU-005-40705684-2001), micro-talc (TU-5727-001-49439345-2004) or micro-talc for paint and pencil industry (GOST 19284-79).
As a thickener used Panel 20 - FT-138-96-01.
Panel is organoleptically thick - hydrogenated product of the interaction of magnesium silicate and Quaternary ammonium salts. Chemical formula: SiMg8O30(OH)4(HE2)4·8H2O; CIN26H48/.
Comparison of the claimed composition with a known composition allows to make a conclusion about its compliance with the criterion of "Novelty", as in this case contains a new set of components in the new proportions.
The specified limits of the ratios between the components of the composition are determined experimentally and are optimal from the point of view of the pros who supply a positive technical result and minimal cost.
Comparative tests based coating compositions of the prototype and claimed showed that the claimed composition forms a more durable floor Coating consisting of two layers of heat-resistant composition on the metal surface, the thickness of 22-32 μm in the temperate climates of U1 on the results of accelerated tests in accordance with GOST 9.401-91 maintains its protective properties within the time specified in table 2.
|Finish||The number of layers||Service life in operating conditions U1|
|to score A31|
|The claimed composition||2||not less than 10 years|
|The composition of the prototype||2||Not more than 7 years|
The use of the resin makes it possible to greatly reduce its amount in the composition, which contributes to the reduction of the total composition and the improvement of physical and mechanical properties.
The inventive composition has a high sedimentation stability during storage, dries faster and provides reception and tocorrosion coatings with high resistance to water, gasoline and oil, extended temperature range up to 650°C) coating.
|№p/p||Components||The content of the component wt.%|
|1||Methylphenylsiloxane resin||3,5||5,0||6,3||7,5||8,3||9||9,5||10,0||10,5||11,2||to 12.0||12,5||13,0|
|2||Degalan LP 64/12||7,0||-||-||-||5,0||-||-||5,0||-||-||-||-||-|
|3||Degalan LP 65/12||-||6,5||-||-||-||-||5,0||-||6,0||5,0||-||-||-|
|4||Dianal BR 116||-||-||5,2||5,0||-||6,7||-||-||-||-||5,8||5,0||5,0|
|Varnish PF 053||14,5||13,0||11,5||-||10,0||8,9||-||7,5||6,0||5,0||4,0||3,5||3,0|
|6||Varnish PF 060||-||-||-||10,0||-||-||8,0||-||-||-||-||-||-|
|12||Aluminum alloy. powder||15,0||to 12.0||10,5||11,7||11,0||11,5||11,5||11,7||11,7||11,5||to 12.0||11,7||10,7|
|13||Toluene||-||The OST.||The OST.||-||-||-||The OST.||-The OST.||-||-||-||The OST.|
|14||Xylene||The OST.||-||-||-||The OST.||The OST.||-||The OST.||The OST.||The OST.||-|
|15||Solvent||-||-||-||The OST.||-||-||-||-||-||-||The OST.||-||-|
|The quality indicators|
|17||The mass fraction VV%||44,9||44,3||to 38.3||43,8||44,7||44,6||44,9||43,7||44,9||44,8||44,8||44,4||45,0|
|18||Viscosity by viscometer type VZ-246 with the nozzle diameter of 4 mm at 20±0.5°C||44||42||35||39||45||43||46||37||45||43||42||42||46|
|19||Drying time to degree 3 at 20±0.5°C, not more than||1||1||1||1||1||1||1||1||1||1||1||1||1|
|20||The strength of the film at the impact on the device Y-1 And, see, not less than||50||50||50||50||50||50||50||50||50||50||50||50||50|
|21||Adhesion of the film, points||1||1||1||1||1||1||1||1||1||1||1||1|
|22||Resistance to temperature|
(600±5)°C, h, not less than
|23||Resistance to alternate action of heat at a temperature (600±5)°C and distilled water, cycles, not less than||5||5||5||5||5||5||5||5||5||5||5||5||5|
|24||Resistance to static action of liquids heating at a temperature of 600±5)°C, h, not less than|
|25||- distilled water||100||100||100||100||100||100||100||100||100||100||100||100||100|
|6||petrol (brand nefras C2-80/120)||48||48||48||48||48||48||48||48||48||48||48||48||48|
Composition for heat-resistant coating containing a silicone resin-based methylphenylsiloxanes, the polymer of butyl methacrylate, pentaftalevyh varnish, heat-resistant pigment, micronized filler, thickener, rheological additive-bentonite clay and an organic solvent, characterized in that as the silicone resin contains methylphenylsiloxane resin on anoverwhelming General formula:
where n, m, k=1,2; R'=Me, H;
in the following ratio, wt.%:
|Specified methylphenylsiloxane resin||3,5-13,0|
|The polymer of butyl methacrylate||5,0-7,0|
|Heat-resistant pigment||of 10.5 to 15.0|
SUBSTANCE: invention relates to paint industry and a paint coat having fire-proof and anticorrosion properties. Such a paint can be used in oil, gas and petrochemical industry, in public services and other sectors where there is need to protect surfaces of structures and components made from different materials, including when used in high temperature conditions. The paint contains organosilicon resin as binder, an organic solvent - xylene or paint thinner, filler - talc and kaolin with micro-wollastonite, a corrosion inhibitor in form of zinc phosphate with an additive of acid-free rust solvent based on tannins and target additives: emulsion of mineral oils based on paraffin and hydrophobic components, a solution of an alkaline liquid with silanol and a diurethane solution. The paint can further contain betolin and a drying agent.
EFFECT: invention increases fire resistance and improves anticorrosion properties of the coating.
3 cl, 1 tbl, 3 ex
SUBSTANCE: method is realised by applying a heat shrink multilayer adhesive tape, having a protective layer made from polyethylene tape, electron-chemically modified and aligned in the common direction by 25-75%, and an adhesive layer made from a tape which is electron-chemically modified with accelerated ions with absorbed dose of 0.1 MGy, made from a composition which contains an ethylene and vinyl acetate copolymer with content of vinyl acetate groups of 10-14%, melt fluidity of 5.0-10.0 g/10 min and breaking strength of 9.8 MPa or an ethylene and vinyl acetate copolymer with content of vinyl acetate groups of 10-15%, melt fluidity of 2.0-6.0 g/10 min and breaking strength of 9.0 MPa, mineral filler, modifier - polyisocyante and sulphur-containing polyhydroquinone disulphide stabiliser in concentration of 0.1-0.3 wt %.
EFFECT: improved adhesion strength of the insulation material.
9 cl, 2 tbl
SUBSTANCE: method of making heat shrink tape for a gasket from polyethylene and an ethylene and vinyl acetate copolymer by mixing polyethylene and an ethylene and vinyl acetate copolymer with a sulphur-containing polyhydroquinone disulphide stabiliser with concentration of 0.1-0.3 wt %, irradiating the obtained tape with accelerated electrons with absorbed dose of 0.07-0.1 MGy and subsequent duplication at temperature of 145-150°C. The heat shrink tape is stretched by 15-70% at temperature of 140-150°C and cooled under a load to room temperature.
EFFECT: technologically improved process of making heat shrink tape.
5 cl, 2 tbl
SUBSTANCE: present invention relates to an aqueous primer composition. The aqueous primer composition contains: a. at least one composition of a heat-curable self-emulsifying epoxy resin obtained by reacting (a) epoxy resin, (b) a polyatomic phenol and (c) an amine-epoxide adduct, where the amine-epoxide adduct is a product of reaction of an aromatic polyepoxide with polyoxyalkylene amine; b. at least one composition of a heat-curable non-self-emulsifying resin having an epoxide base which has epoxide functionality from 1.8 to 4 and epoxide equivalent weight from 100 to 200; c. water; and d. at least one curing agent. The invention also describes a method of producing the aqueous primer composition.
EFFECT: improved corrosion resistance at low concentrations.
7 cl, 4 tbl, 53 ex
SUBSTANCE: invention relates to methods of anti-corrosion protection of metal structures and large-size industrial equipment operating in atmospheric conditions by depositing a paint coat onto the surface of the equipment. Disclosed is an anti-corrosion protection method which involves depositing a prime coat onto the metal surface, followed by tack-free drying, and then depositing a top coat followed by drying until complete setting. The prime coat and the top coat are made from a composition which contains (wt %): silicone epoxy resin (32.0-52.0), nanodispersed fluoroplastic (2.0-4.0), aminosilane curing agent (8.0-12.8), target additives (1.84-2.32), pigments and filler materials (3.4-21.6), organic solvents - the balance.
EFFECT: anti-corrosion protection of metal structures and large-size industrial equipment for more than 15 years in atmospheric conditions of moderate and cold climates while increasing cost effectiveness of painting by using the same paint material as a prime coat and a top coat, fewer layers and reduced total thickness of the paint coat.
1 cl, 2 tbl
SUBSTANCE: invention relates to protective coating compositions based on chlorosulphonated polyethylene for protecting metal and concrete from external action. The protective coating composition based on chlorosulphonated polyethylene contains pigments, organic solvents, polymeric petroleum resin as a modifying additive and curing agent and zinc phosphate.
EFFECT: composition has high covering capacity and viscosity, and coatings made from said composition have improved waterproofing and protective properties.
2 tbl, 2 ex
SUBSTANCE: invention relates to protecting a metal base from corrosion by applying a corrosion-protective system thereon. The system contains at least one coating applied onto the base which consists of an organic matrix in which anticorrosion pigments are dispersed. The pigments are formed by an alloy of at least two metals and inevitable impurities. The organic matrix is a primer for a multilayer paint coat and/or an anticorrosion primer for a multilayer paint coat and/or coloured lacquer for a multilayer paint coat and/or finish lacquer for multilayer paint coat and/or lacquer for coating metal and/or an adhesive for gluing metal sheets and/or oil and/or wax and/or an oil-wax emulsion.
EFFECT: reliable resistance to corrosion penetration.
41 cl, 5 dwg, 1 tbl
SUBSTANCE: invention relates to the paint industry, particularly compositions and methods of producing water-resistant anticorrosion primers for protecting corroded surfaces of different metals and alloys before subsequent application of paint coatings or as independent protective coating. The method of making gradient coatings involves mixing components which comprise epoxy resin, a pigment, glycidyl ether of phosphoric acid and a curing agent, and applying onto the surface. The epoxy resin is first mixed with the pigment, followed by addition of the glycidyl ether of phosphoric acid in which in which a complexing agent - disodium salt of 3,5-pyrocatechin-disulphonic acid (tiron) is dissolved and the curing agent. The mixture is held until a given degree of demixing is achieved and then cured. The glycidyl ether of phosphoric acid used is either triglycidyl phosphate or diglycidyl phosphate or diglycidyl methylphosphonate.
EFFECT: reduced viscosity of the obtained composition and high resistance of the coating to aggressive media.
3 cl, 2 tbl
SUBSTANCE: composition contains binder - epoxy or polyurethane resins, curing agents, 5-30 wt % corrosion inhibitor and quaternary ammonium compounds in amount of not less than 0.1 wt % of the total weight of the composition.
EFFECT: invention enables to obtain coatings which do not contain chromates, which protect a metal surface from microbioligically induced corrosion.
13 cl, 4 tbl, 10 ex
SUBSTANCE: method of producing anticorrosive coating involves preparing the surface of structures of different types to be protected, removing dust from the surface to be protected using compressed air or an industrial vacuum cleaner, defatting the surface with a solvent or alkaline detergent, applying a rubber mixture, a rubber adhesive and a modifying component with a curing agent, which are used in form of a rubber-polymer compound with pre-dissolution thereof in a solvent. The rubber mixture used is a low-hardness rubber mixture GX-2566 which is based on synthetic cis-isoprene rubber SKI-3 gr.1 and synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15 and/or medium-hardness rubber GX-1976 based on synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15, and high-hardness rubber GX-1751 based on synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15 or GX-1627 based on synthetic cis-isoprene rubber SKI-3 gr.1 and synthetic butadiene methyl styrene rubber SKMS-50P, meant for making semi-hard rubber or hard-rubber articles, respectively. The rubber adhesive used is rubber adhesive 2572, which is a solution of a rubber mixture based on synthetic cis-isoprene rubber SKI-3 gr.1 and/or synthetic butadiene methyl styrene rubber SKMS-50P with sulphur, lead oxide and iron oxide additives. The modifying component used is a polymer compound for producing protective coatings at temperature of 20-35°C, which is polyurethane based on organic polyisocyanate, epoxide based on epoxy resin ED-20, polysiloxane based on an inorganic compound of silicon and oxygen; the solvent is nefras S2-80/120. The compound is applied in layers, each having thickness ranging from 0.03 mm to 0.13 mm. The first layers of the compound, which act as the prime coat, are applied with additional dilution of the compound in ratio of up to 6:1. After applying on the surface of the article, the compound is cured in ambient conditions at temperature of 20-35°C or is treated with hot air at temperature of 45-60°C, or with steam at temperature of 97.5-100.5°C at atmospheric pressure.
EFFECT: high adhesion and quality of the coating, high reliability and longevity thereof, simple technique and easier application of the coating, and application of the coating in ambient conditions.
2 cl, 2 dwg, 2 ex
SUBSTANCE: present invention relates to coating compositions which contain resin binder in form of an organofunctional polysiloxane polymer, which acquires a polymer structure as a result of partial action of a curing mechanism or a combination of curing mechanisms. Disclosed is a coating composition which is curable at ambient temperature, which contains polysiloxane with molecular weight of 500-2000 and an organofunctional silane with two hydrolysable groups, wherein content of solid substances in the coating composition is at least 60 wt %. Disclosed also is a method of forming a cured coating composition, a version of the coating composition, wherein polysiloxane does not contain epoxy groups, and versions of applying coating compositions.
EFFECT: obtaining a flexible inorganic polymer structure which is characterised by high resistance to UV radiation, heating and oxidation compared to coatings which contain a considerable amount of a carbon-based organic polymer.
15 cl, 11 tbl, 56 ex
SUBSTANCE: invention relates to a single-component, low-temperature coating composition which is hardened in a wet environment and is stable during storage, and contains silicone with silanol functional groups, silicone with alkoxyl functional groups, a plasticiser containing a product of reaction of two or more reagents and a hardener selected from amines, aminosilanes, ketimines, aldimines and combinations thereof. The invention also relates to substrates coated, at least partially, with said composition.
EFFECT: improved flexibility, elongation and bending of the coating, while preserving good drying time, chemical resistance and stability during storage of the single-component composition.
14 cl, 7 tbl, 11 ex
SUBSTANCE: disclosed is a method of modifying physical properties of a base selected from zeolites, synthetic and natural silicates, silicon oxides, aluminium oxides and minerals, involving coating the base with nanostructured chemicals selected from polyhedral oligomeric silsesquioxanes of formula [(RSiO1.5)n(RXSiO1.0)m]Σ#, where m, n and # denote an integer from 1 to 10, R is a linear aliphatic hydrocarbon and X=OH. The nanostructured chemical modifies a physical property of the base, selected from a group comprising (a) low moisture absorption by the base, and (b) high compatibility with polymers, when the said base is used as filler material.
EFFECT: possibility of obtaining coatings with improved hydrophobic property, heat resistance, strength and longevity.
11 cl, 7 dwg, 3 tbl, 1 ex
SUBSTANCE: here is disclosed anti-stick ceramic coating consisting of two superposed layers: base layer for application of substrate consisting of matrix including product of reaction of silica sol condensation, organoalkoxycilane, solvent and, possibly, catalyst, and external layer consisting of matrix including product of reaction of silica sol condensation and of organoalkoxycilane including insignificant share of fluoralkoxysilane. There are also disclosed the procedure for preparation of an external layer of claimed coating and procedure for application of claimed coating on substrate.
EFFECT: higher resistance to abrasive wear, raised surface hardness and long life wear resistance of coating.
35 cl, 7 dwg, 1 tbl
SUBSTANCE: two-component composition of adhesion promotor contains first component K1 including at least one organoalkoxysilane S and at least one dehydrated surfactant T, and second component K2 including water and at least one acid, with acid taken in amount providing acid reaction at pH 3-5 in the mix obtained from K1 and K2 components.
EFFECT: simplified composition preparation, improved adhesion with composition stability preserved.
27 cl, 7 dwg, 12 tbl
SUBSTANCE: composition contains (wt %): polyorganosiloxane or tetraethoxysilane (2.5-10), polymethylphenyl siloxane resin which is not modified or modified with polyester (0.5-7.0), copolymer based on butylmethacrylate and methacrylic acid or ester thereof (6.0-10.0), phosphorus-containing compound, selected from tris-chloroethylphosphate, tris-chloropropylphosphate or ammonium polyphosphate (25.0-35.0), butanol (6.0-10.0) and aromatic solvent (the rest). The proposed composition gives wood 100% biostability and a second group of fire-protective effectiveness.
EFFECT: design of a novel protective composition which provides high efficiency of fire- and bio-protection of wood material.
1 cl, 2 tbl
SUBSTANCE: described is a heat resistant coating composition containing the following, wt %: polyorganosiloxane resin - 20-25, pentaphthalic lacquer - 8-14, isobutylmethacrylate polymer - 5-7, heat resistant pigment - 11-17, filler - 5-10, rheological additive - 1-2, thickener - 1-2 and organic solvent - the rest. The composition contains porous silicate in form of pearlite or kieselguhr, and the heat resistant pigment is aluminium powder or heat resistant pigments of different colours.
EFFECT: increased sedimentation resistance during storage and provision for coating with high resistance to physical and chemical effects.
3 cl, 2 tbl, 15 ex
SUBSTANCE: composition is described for bioprotective coating wood, which contains organosilicon lacquer based on polymethylphenylsiloxane or polydimethylphenylsiloxane in amount of 1.5 to 10.0 wt % in terms of dry residue, polyphenylsiloxane or polymethylphenylsiloxane resin or tetraethoxysilane or ethylsilicate in amount of 3.0 to 24.0 wt % in terms of dry residue, a copolymer based on butylmethacrylate and methacrylic acid or its ether in amount of 5.0 to 10.0 wt % and organic solvent - the rest.
EFFECT: method increases water resistance and biostability of wood and wooden materials.
SUBSTANCE: invention relates to making a coating by dissolving polyethylhydrosiloxane in a hydrocarbon solvent in the presence of a tin-containing curing agent, wherein a solution of cyclohexanone peroxide in trichloroethylphosphate is further added to the said solution to speed up the curing process. The obtained coating can be used for making release coating for surfaces of moulds, used in making different objects from polymer composite materials.
EFFECT: design of a method of producing organosilicon anti-adhesive coating through accelerated cold curing of liquid polyethylhydrosiloxane.
3 cl, 5 ex
FIELD: protection and decorative painting of metal surfaces working at high temperatures under action of aggressive medium.
SUBSTANCE: proposed compound contains the following components, mass-%: polyphenyl siloxane resin, 25.0-35.0; butyl methacrylate and methacrylic acid copolymer, 4.0-8.0; heat-resisting pigment, 10.0-30.0; filler, 3.0-7.0; rheological additive, 0.5-4.0; synthetic zeolite having structure of alumosilicate complex with alkaline metals used as adsorbent, 1.0-10.0; the remainder being solvent. This coat withstands alternate action of temperature of 500°C and water; service life of this coat is no less than 18 months.
EFFECT: enhanced impact strength; enhanced adhesion and resistance to water, oil and gasoline.
SUBSTANCE: invention relates to production of siccatives which enable to dry paint materials based on alkyd, uralkyd and oily film-formers. The method of producing a siccative involves reaction of 2-ethylhexanoic acid with zinc oxide, cobalt hydroxide and manganese dioxide (pyrolusite) with successive feeding of components: zinc oxide at 90-100°C, cobalt hydroxide at 110-120°C, manganese dioxide (pyrolusite) at 120-130°C with simultaneous addition of ethylene glycol, followed by addition of a solvent: white alcohol and/or nefras C4, and/or rocket engine fuel TS-1 or mixtures thereof.
EFFECT: broader capabilities of using the siccative, low power consumption, high hardness of the film of the paint material.