Polystryrene paint composition

FIELD: chemistry.

SUBSTANCE: polystyrene paint composition contains the following, wt %: film-forming agent - polystyrene or derivatives thereof 1-9, pigments 1-20, colloxylin 5-15, alkyd resins 10-15, plasticiser 1-15 and solvents - the balance.

EFFECT: obtaining coatings which provide high degree of protection from corrosion of components and surfaces in conditions of atmospheric exposure or exposure to a liquid or moist environment.

2 ex

 

The invention relates to the field of production of paintwork materials, in particular based paints polystyrene film-forming, and can be used to protect metal, concrete and wood surfaces from corrosion in various industries.

Known composition to obtain paint materials based on polystyrene, which contains a plasticizer and modifier in the form of an oligomer of styrene in amounts of 5-30 wt.%, the pigments.

Cm. RF patent №2142486, MKI C09D 125/06, Appl. 11.12.1997, publ. 10.12.1999, "Composition for paints and varnishes".

The disadvantage of this structure are low hardness and, consequently, low protective properties.

Known composition of polystyrene paint, including film-forming - polystyrene, solvent dyes, pigments and the modifier, which is used as a 4%aqueous solution of polyvinyl alcohol with the content of 12-14% of the acetate groups.

Cm. RF patent №2165951, MPK7 C09D 125/06, Appl. 11.05.2000, publ. 27.04.2001, "Composition of polystyrene paint".

The presence of a known composition of the modifier in the form of a 4%aqueous solution of polyvinyl alcohol content 12-12% acetate groups leads to the fact that the coatings produced from the use of such a composition, when exposed to light, heat, oxygen lose solidity. In the depending on the ambient humidity coatings behave as follows: under conditions of low humidity become hard, and in a humid environment soften and thereby lose their protective properties.

A disadvantage of known composition are low mechanical and protective properties that limit its use for parts and surfaces, operating in conditions of high humidity and low temperatures.

The closest in technical essence and the achieved effect and selected as a prototype is the composition of polystyrene paint, including film-forming - polystyrene, solvent, pigment, plasticizer, alkyd resins, collection in the form of a solution of nitrocellulose.

Cm. inventor's certificate SU # 774228 A1, Appl. 23.01.1979, publ. 23.12.1981, "Enamel".

The disadvantage of this composition is the following: if one applied on the surface of the coating is insufficient to hide possible defects of the coated surface and to obtain the required degree of protection. But when the second and subsequent application due to the increased viscosity caused by high content of polystyrene, formed the deformation (warping), which degrades the characteristics of the coating. This disadvantage can be avoided by reducing the content of polystyrene in the composition up to 9.0%. Also, this composition has poor adhesion. This parameter can be improved by increasing the content of alkyd resins up to 15.0%.

Tacacardiageneric of the invention is to obtain a paint composition, to ensure corrosion protection of parts and surfaces exposed to atmospheric exposure and effects of a liquid medium, while the ease of obtaining a composition.

The technical result that allows to solve this problem is to increase the strength of the coating of parts and surfaces by simultaneous use in one part of collocalia and polystyrene or its derivatives in an optimal ratio of components.

This object is achieved in that the composition of polystyrene paint, including film-forming - polystyrene or its derivatives, solvents, pigments, plasticizers, alkyd resins, collection, according to the invention the components are taken in the following ratio, wt.%:

Polystyrene and its derivatives- 1,0 - 9,0
Pigments- 1,0-20,0
The plasticizer- 1,0-15,0
Collection- 5,0-15,0
Alkyd resins- 10,0-15,0
Solvents- rest

Conducted investigated the I patent and scientific and technical information sources testify, the proposed composition of polystyrene paint is not known and should not be explicitly studied the prior art, i.e., meets the criterion of "novelty" and "inventive step".

The proposed composition of polystyrene paint can be prepared in any enterprise, specializing in this industry, because it requires known materials and standard equipment, widely produced by domestic and foreign industry.

Thus, the claimed composition polystyrene paint meets the criterion of "industrial applicability".

In the proposed structure in comparison with the known can result in atmosferoustojchivosti, moisture resistance and, therefore, are improved protective properties of the paint as a whole.

The use of alkyd resins in the proposed structure allows to increase the hardness of the coating and therefore to improve the corrosion protection of parts, the surfaces of which are treated in this part.

The introduction of the plasticizer in the composition of the paint to an even greater extent, help to improve the elasticity of the coating and increase corrosion protection.

Mix in one part paint collocalia and polystyrene or its derivatives is based on the fact that they dissolve in the same solvent, but a hee is practical level collection and polystyrene do not interact.

Preparation of composition - composition of polystyrene paint can be the following: in a container of solvent according to the recipe add collection, polystyrene and its derivatives, alkyd resin, plasticizer, pigments. All are thoroughly mixed until a homogeneous mass.

As alkyd resins can use the resin 188 (solution in organic solvents glyptal resin, modified vegetable oils or vegetable oils and synthetic fatty acids and resin 130 (solution in organic solvents glycerol polyester of phthalic acid modified synthetic fatty acids fractions With10-C13or10-C16; as a derivative of polystyrene can use the PVA polystyrene (polystyrene foam suspension); as pigments can use titanium dioxide, chromium oxide, red iron oxide, Prussian blue and other components, making it possible to obtain a wide color range of paints. Solvents - volatile part (the rest up to 100%) is a mixture of organic solvents of the following composition: butyl acetate, ethyl acetate, ethyl alcohol, butyl alcohol or n-butanol, toluene or xylene.

Example 1:

P is literal - 4,0%
Pigmentsto 8.0%
The plasticizera 3.5%
Collection- 6,0%
Alkyd resins- 13,0%
Solvents- rest

Example 2:

Polystyrene- 2,0%
Pigments- 9,0%
The plasticizer- 4,0%
Collection- 7,0%
Alkyd resins- 13,0%
Solvents- rest

As a plasticizer take in both examples, chloroparaffin CP-470, alkyd resin - resin 188.

Due to the increase in the composition of the mass fraction of polystyrene relative to kolloksilina increase the dielectric properties of the composition, while increasing the mass fraction of collocalia relative to polystyrene reach increase coating hardness.

Experimental is but installed by the applicant, that application claimed their composition allows to obtain a coating that provides a high degree of protection against corrosion of parts and surfaces, under conditions of atmospheric exposure or exposure to liquid medium.

The polystyrene composition of paints, including film-forming - polystyrene or its derivatives, solvents, pigments, plasticizers, alkyd resins, collection, characterized in that the components are taken in the following ratio, wt.%:

Polystyrene or its derivatives1,0-9,0
Pigments1,0-20,0
The plasticizer1,0-15,0
Collection5,0-15,0
Alkyd resins10,0-15,0
SolventsRest



 

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