Polystyrene paint composition

FIELD: chemistry.

SUBSTANCE: polystyrene paint composition contains a film-forming agent - polystyrene and/or derivatives thereof, colloxylin, a solvent, pigments, a plasticiser, alkyd resins and additionally a dispersant.

EFFECT: obtaining a highly homogeneous coating which provides high degree of protection from corrosion of components and surfaces in atmospheric or liquid medium exposure conditions.

6 ex

The invention relates to the field of production of paints and varnishes, 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 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 (see RF patent №2165951, IPC 7: C09D 125/06, Saul, epubl, "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. 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 nikitinantoh.

The closest in technical essence and the achieved effect and selected as a prototype is the composition of polystyrene paint, including film-forming - polystyrene or its derivatives, collection, solvent, pigment, plasticizer, alkyd resins (see application No. 2011130714, patent No. 2472827, Saul,, publ. Bull. No. 2 from 20.01.2013, "the Composition of polystyrene paint").

The disadvantage of this structure is the occurrence of unevenness of the paint coating. This disadvantage can be reduced significantly by changing the ratio of components in the paint, as well as by the introduction of the additional component-disperser.

The task of the invention is to obtain a paint composition that can provide corrosion protection of parts and surfaces exposed to weathering and exposure liquid environment while ensuring uniformity of the coating.

The technical result that allows to solve this problem is to increase the strength and uniformity of the coating of parts and surfaces by simultaneous use in one part of the polystyrene and/or its derivatives, collocalia, plasticizers, alkyd resins, dispersant, pigment and solvent in the optimal ratio of components.

Put ass the cha is achieved by the composition of polystyrene paint, including film-forming - polystyrene and/or its derivatives, collection, solvent, pigment, plasticizer, alkyd resins according to the invention it further comprises a dispersant in the following ratio, wt.%:

Studies on patent and scientific and technical information sources show that 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 about the industry, since this requires a 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 uniformity of the coating and consequently improved protective properties of the paint in General and uniformity of the coating.

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 between a chemical level collection and polystyrene do not interact.

The introduction of the polystyrene paint disperser allows to obtain more uniform (homogeneous) floor, as dispersant are special chemicals that allow you to connect the practice is logically incompatible components.

The solvent is volatile portion of the composition, which can be selected from a number of ethanol, butanol or Isobutanol, butyl acetate, ethyl acetate or acetone, toluene, cyclohexanol, which allow you to effortlessly prepare the inventive composition - the composition of polystyrene paint.

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, as polystyrene take or General purpose polystyrene (PSM), or polystyrene (LAN), or copolymers of styrene or polymers of derivatives of styrene or high impact polystyrene (UPM), alkyd resin, plasticizer, pigments, mix thoroughly to obtain a homogeneous mass, the dispersant is introduced into the composition in the final stages with continuous stirring to obtain the required uniformity of composition.

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 acid fraction C₁₀-C₁₃or C₁₀-C₁₆; as a derivative of polystyrene can use the PVA polystyrene (polystyrene foam suspension), high impact polystyrene (e.g., UPM - 0508); 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. As the plasticizer can use chloroparaffin CP-470. As a dispersant take copper oleate.

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Experimentally by the applicant established that the application claimed their composition allows to obtain highly homogeneous 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 and/or its derivatives, collection, solvent, pigment, plasticizer, an alkyd resin, characterized in that it further contains a dispersant in the following ratio, wt.%: