The composition for graded coatings

 

(57) Abstract:

The composition can be used to protect metallic materials resistant to corrosive environments. The composition includes epoxygenase resin with a molecular mass of 850-1100, amine hardener, pigment, micro-talc as filler and triglycerol. A specific ratio of components in the composition provides high impact strength (50 cm) Flexural strength (1 mm), adhesion to various metals, high corrosion resistance. table 2.

The invention relates to the paint industry, in particular epoxy compositions to obtain spontaneously stratifying coatings, and can be used for protection of metal materials and products from them.

Known composition for Samarskaya coatings, including epoxygenase resin with a molecular mass of 850-1100 and content of epoxy groups 6.8-8.3%, perchlorovinyl resin with a molecular mass of 38000-63000, hardener amine type (hexamethylenediamine were), boric anhydride, pigments (titanium dioxide, chromium oxide, strontium chromate or zinc phosphate), filler (talc), and an organic solvent. Coatings based on these compositions characterized by low adhesion to aluminum [and. C. the USSR 1219624, IPC 4 09 D 3/58, 3/76; 08 L 63/02. The composition to obtain a stratifying coatings. Krylov Centuries, Verkholantsev Centuries, Orlova T. F., Kinova I. I., Slepneva E. P.].

The closest in technical essence and the achieved result to the proposed composition is a composition for obtaining a thick Samarskaya semi-gloss coatings containing epoxygenase resin with a molecular mass of 850-1100, epoxygenase resin with a molecular mass of 390-450, perchlorovinyl resin at a ratio of 1.0:0.48:0.44, hardener - polyethylenepolyamine, zinc phosphate, a pigment, a mixture of micro-talc and microbrite in the ratio 2: 1, an organic solvent. Coatings on the basis of the compositions of the prototype have high strength in bending, impact resistance, adhesion to steel, low-chalking. However, the coatings have insufficient adhesion to aluminum and accordingly insufficient corrosion resistance of the coatings of aluminum products in aggressive environments [RF patent 2028350, IPC 6 09 D 163/02. Composition for coating. Nikitaeva M. N., Lambrew C. G., Krylov Centuries, Verkholantsev Centuries, Ovodova E. C.].

The present invention aims to improve the adhesion to various metal substrates and increased chemical resistance products ISCA task is solved by the composition for gradient coatings on metal, resistant to corrosive environments, including epoxygenase resin with a molecular mass of 850-1100, amine hardener, pigment, micro-talc as filler, contains triglycerol in the following ratio, wt.h.:

Epoxygenase resin with m 850-1100 m - 100

Triglycerol - 20-40

Pigment - 90-100

The micro-talc - 35-40

Amine hardener - Stoichiometric amount of

As epoxygenase resin with a molecular mass of 850-1100 use resin e-41 (TU 6-10-607-78) with an epoxy number of 6.8-8.3%, e-40 (OST 6-10-416-76) with an epoxy number of 13-15%, e-45 (TU 6-10-1587-76) with an epoxy number of 8-10%. As amine hardeners used: PEPA - polyethylenepolyamine (TU 6-02-594-80) with the stoichiometric coefficient K=0.6, UE-M - monocanalicular (TU 6-05-1863-78) with K=0.92, up-0638 - eutectic 4,4'-diaminodiphenylmethane and meta-phenylenediamine (TU 6-09-15-295-77) with K= 0.94, AF-2 - N-cresylate-diamine (TU 2494-511-0020333521-94) with K=1.28. As pigments used titanium dioxide (GOST 9808-94), strontium chromate (TU 48-4-239-82), phosphate chromium (TU 6-18-87-75), zinc oxide (TU 6-09-01-760-90), red iron oxide (GOST 8135-74). The filler used, the micro-talc (GOST 19284-75). As active is idnum by 48%.

The compositions prepared as follows. Lacquer composition is produced by mixing high molecular weight epoxy resins e-40 (e-41, e-45) and tropicalista at room temperature for 30 minutes In the obtained varnish enter pigments and filler and dispersed. Before applying to the surface composition is administered in the estimated amount of the hardener. The claimed composition is significantly different from the prototype. In varnish part no: epoxygenase resin ED-20, perchlorovinyl resin, an organic solvent. Introduce a part of triglycerol plays a role as the solvent and low molecular weight resin. In the declared area of concentration triglycerol partially compatible with the high molecular epoxygenase resin and allows to obtain a gradient coating with a predominant distribution on the surface of the high molecular weight oligomers, which provides high impact strength and elasticity. Triglycerol is basically the substrate and results in high adhesion to metal. Gradientnoi coating is provided as in the lacquer composition, and with the introduction of pigments and fillers.

The compositions applied to the protected metal surface, time utverzhdeniyi and prototypes. In table.2 presents the properties of the proposed coatings in comparison with the prototype. From the data obtained it follows that the claimed composition does not contain compared to the prototype volatile flammable toxic substances by eliminating solvents, has a higher adhesion to various metals, increases the stability of the products in corrosive environments. In addition, the inventive composition compared to the prototype contains fewer components.

Composition for gradient coatings on metal, resistant to corrosive environments, including epoxygenase resin with a molecular mass of 850-1100, amine hardener, pigment, micro-talc as a filler, characterized in that it further comprises triglycerol, in the following ratio, wt. including :

Epoxygenase resin with m 850-1100 m - 100

Triglycerol - 20 - 40

Pigment - 90 - 100

The micro-talc - 35 - 40

Amine hardener - Stoichiometric amount of

 

Same patents:

The invention relates to the field of anti-corrosion coatings and can be used when applied to the bituminous coating coating of paint and varnish materials, such as alkyd enamels

The invention relates to compositions for coating based on epoxy resins and can be used to protect materials and products, mainly metal, from exposure to aggressive environments, including the impact of the marine environment and/or fog with a high concentration of salt ions, and intense solar radiation

The invention relates to a method for producing polymer coatings with high protective physico-chemical properties, low toxicity, suitable for implantation in tissue of living organisms

The invention relates to compositions for corrosion, polymer coatings based on copolymers of vinyl chloride and is designed to protect metal structures of industrial enterprises operating in aggressive environments, as well as in sea water

The invention relates to a composition anticorrosive materials for polymeric protective coating of metal and concrete structures from corrosion and erosion both on air and in the water, having biocidal properties

The invention relates to the production inhibited oil compositions for protection against corrosion

The invention relates to compositions for protecting metallic surfaces from corrosion and can be used for corrosion protection of the bottoms of cars, metal, steel
The invention relates to the field of application of polymer coatings and can be used in the manufacture of chemical equipment, utensils, electrical appliances, piping, heat exchangers, etc

The invention relates to compositions for coating based on epoxy resins and can be used to protect materials and products, mainly metal, from exposure to aggressive environments, including the impact of the marine environment and/or fog with a high concentration of salt ions, and intense solar radiation

The invention relates to the chemistry of polymers, namely, to polymeric compositions for the preparation of coatings biocidal action

The invention relates to the production of organo - and fiberglass to protect against thermal factors defeat an open flame and intense heat fluxes and can be used in the construction, automotive, chemical engineering, etc

The invention relates to a composition anticorrosive materials for polymeric protective coating of metal and concrete structures from corrosion and erosion both on air and in the water, having biocidal properties

Epoxy composition // 2186077
The invention relates to epoxy compositions used for gluing repair linings for pipes, metal structures for filling small defects, as anti-corrosion coatings

The invention relates to the field of building materials and can be used to produce waterproofing coatings for building structures and structures made of concrete, reinforced concrete, brick, wood and other materials

The invention relates to the field of construction materials used in civil and industrial construction, in particular for waterproofing of structures and buildings made of reinforced concrete as a protective coating

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

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

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

2 tbl

Up!