FIELD: chemistry.
SUBSTANCE: invention relates to preparation of coating compositions and can be used in interior finishing and facing paint coatings for wooden and metallic substrates. The coating composition, which is diluted with a solvent, contains alkyd resin having at least 20 wt % vinyl composite blocks and is characterised by fat content less than 65%. Mass ratio of non-vinyl to vinyl groups lies between 1:1 and 4:1. Vinyl groups contains styrene and/or (meth)acrylate groups. The ratio of styrene to (meth)acrylate groups ranges from 0.5:1 to 4:1. Vinyl groups have low polarity. Mw is less than 10000. Fat content is greater than 45%. The alkyd resin in accordance with this invention provides a coating consisting of a composition resulting from a solvent containing less than 300 g/l volatile organic substances.
EFFECT: composition has good rheological properties, required viscosity with low solvent content and short drying period, good strength and longevity.
7 cl, 3 tbl, 8 ex
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