Composition for protecting corroded metal surfaces

 

(57) Abstract:

The invention relates to compositions of corrosion-resistant coatings cold drying and can be used in various industries. The composition comprises, in wt.%: polyvinylchloride chlorinated resin 6,0-9,0; glyptal resin 2,5-7,0; epoxy resin ED-40 0,8-2,0; chloroparaffin 1,5-4,0; rust - derived tannin; pigments 5,0-12,0, fillers 7,0-11,0, organic solvents else. The technical result - getting one-component compositions with high penetrating (impregnating) the ability in relation to the products of corrosion, thereby increasing the conversion efficiency of rust, increases adhesion to rusted surfaces, resulting in improved protection of the properties of the paint coating and provides the possibility of drawing on over a thick layer of rust. table 2.

The invention relates to compositions of corrosion-resistant coatings cold drying and can be used in oil, gas, energy, chemical and other industries to protect the corroded surface of the components and structures of iron or steel, used in the atmospheric conditions RA is Yu and gasoline.

Known primer - modifier rust MS-0152 [THE 6-10-1729-79, and.with. SU 510496 A, 1976] on the basis of a copolymer of styrene with maleic anhydride, containing pigments, filler, phosphoric acid and solvents.

However, it is not a high protective properties due to high water absorption, quickly destroyed not only in water and chemically aggressive environments, but also when using it as a separate coverage in a normal atmosphere (for example, for temporary storage of metal).

Closest to the present invention is a composition for repairing corroded surface containing epoxy Dianova resin, plasticizer platogo type, pigments, fillers, aminecontaining compound, rust Converter, such as pyrocatechin, an organic solvent, forsteriana polysiloxane resin, a copolymer based on vinyl chloride and silicon dioxide [U.S. Pat. EN 2174135 C1, publ. 27.09.2001].

However, it has low adhesion to rusted surfaces, insufficient protective properties, low-tech because of dvukhkomponentnoi.

The problem to which the present invention is directed, is to obtain a single component is stvie thereby increasing the conversion efficiency of rust, increases adhesion to rusted surfaces, which increases the protective properties of the paint coating and provides the possibility of drawing on over a thick layer of rust.

The problem is solved by the use of a composition comprising a polymer based on vinyl chloride, epoxy resin, plasticizer, pigments, fillers, rust Converter, the polymer based on vinyl chloride it contains chlorinated polyvinylchloride resin, plasticizer - chloroparaffin as epoxy resin - epoxy resin e-40, as a rust - derived tannin and further comprises a glyptal resin in the following ratio, wt.%:

Polyvinylchloride chlorinated resin 6,0-9,0

Glyptal resin 2,5-7,0

Epoxy resin e-40 0,8-2,0

Chloroparaffin 1,5-4,0

Pigments 5,0-12,0

Filler 7,0-11,0

Rust -

derived tannin 0,5-1,0

Organic solvents Else

As the filler, for example, use the micro-talc, micronized mica, talc and others.

As Pigma is ertificate use chloroparaffin, for example, the brand CP-470.

As chlorinated polyvinylchloride resin used resin grade PSC drug (OST 6-01-37-88).

As organic solvents used xylene, butyl acetate, acetone, and others.

As glyptal resin used resin grades FC-42 (TU 6-10-1441-79), FL-390 (TU 6-10-1384-73).

As a rust Converter use derivative tannin, reaching under the trade names “Corridor” firm Wegmann (Germany), Alkofer AC company Cognis (Germany).

As the epoxy resin used resin e-40 THE 2225-155-05011907-97.

Technology of preparation of the composition according to the invention is as follows. Dissolved chlorinated polyvinylchloride resin in a mixture of organic solvents. Dispersed pigment paste consisting of a glyptal resin, chloroparaffin, pigments and filler on the bead mill. When composing in disolver download: solution of chlorinated polyvinylchloride resin, pigment paste, mica, rust Converter and stirred for 30 minutes.

Examples of compositions according to the invention are shown in table 1, the properties of the coatings in table 2.

For comparative Yokoi layer of corrosion products. The thickness of the layer of rust was 35-60 μm, 70-100 μm.

The results of the tests are presented in table 2. These tables show that the drying time, adhesion to rusted surfaces and protective properties of the proposed composition than the known composition according to the patent 2174135.

Composition for protecting corroded metal surfaces, comprising a polymer based on vinyl chloride, epoxy resin, plasticizer, pigments, fillers, rust, organic solvents, characterized in that it comprises a polymer based on vinyl chloride - chlorinated polyvinylchloride resin as the epoxy resin - epoxy resin e-40, as a plasticizer - chloroparaffin, and as a rust - derived tannin and additionally glyptal resin in the following ratio, wt.%:

Polyvinylchloride chlorinated resin 6,0-9,0

Glyptal resin 2,5-7,0

Epoxy resin e-40 0,8-2,0

Chloroparaffin 1,5-4,0

Rust - derived tannin 0,5-1,0

Pigments 5,0-12,0

Fillers 7,0-11,0



 

Same patents:

The invention relates to compositions for coatings containing polyunsaturated polymer, thiol compound and photoinitiator

The invention relates to a method for producing coatings on the basis of melaminated enamels containing acidic accelerators based on phosphoric acid to reduce the temperature of curing

The invention relates to the production method of dispersion paints and varnishes alkyd binder, designed mainly for construction and finishing, interior and exterior

The invention relates to the production of alkyd oligomers, modified food waste plastics packaging based polyethylenterephthalat (PET), used as film-forming coating

The invention relates to the field of polymer formulations based on alkyd resins in combination with modifying additives used to protect from atmospheric corrosion of metal for railway transport and equipment

The invention relates to the technology of paint and varnish materials (coatings), in particular to coatings based on aqueous dispersions of alkyd resins to obtain coatings

The invention relates to a paint and varnish materials, namely, fire resistant enamels, and can be used for coating metal, wood, and other structures

The invention relates to construction materials for protection against corrosive effects on metal, concrete, reinforced concrete and wood surfaces

The invention relates to compositions for the antifriction metals and chemically resistant coatings based on PTFE by cathodic deposition

The invention relates to compositions for the preparation of hydrophobic coatings by cathodic deposition and can be used when you need the coverage the minimum thickness (not more than 10 μm), for example, when the protection of condenser tubes of heat exchangers made of copper alloys, where necessary drip condensation of the steam

The invention relates to the field of protection of metal surfaces and restore corroded surfaces, working in conditions of abrasive wear, corrosive environments, for example when transporting fertilizers, energy, chemical and mining industry, the repair of corroded equipment and to protect it

The invention relates to compositions for obtaining a flame-retardant heat-shielding coatings based on polymeric binder

The invention relates to compositions of corrosion-resistant coatings cold drying and can be used to protect the corroded surface

Polymer composition // 2214430
The invention relates to compositions of epoxy resins on the basis of simple polyglycidyl esters of bisphenols used as casting, impregnating and adhesive compositions, and also as a binder for the manufacture of materials used in construction, electrical and electronics, mechanical engineering and other industries

The invention relates to a protective coating of metal and concrete surfaces used in high corrosive activity

The invention relates to coatings industry and is designed to protect concrete, metal and aspectoriented surfaces against chemical and atmospheric effects and destruction

The invention relates to the field of production of epoxy compositions intended for the manufacture of anti-corrosion coatings, and can be used for the manufacture of mechanically durable floor coverings, metal and concrete building structures, tanks, gluing ceramic, glass, stalowych and stone tiles

The invention relates to compositions of polyurethane film-forming coating cold drying and can be used as a protective coating of wood products, concrete, metal structures
Up!