AQUEOUS COATING COMPOSITION Russian patent published in 2011 - IPC C09D5/02 C09D4/00 C09D133/08 C09D133/10 C09D163/10 C09D175/04 

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous coating compositions with low content of volatile organic compounds. The aqueous coating composition contains water, oxidative-curable resin, at least 1.5% of the weight of the composition of a non-structured alkali-soluble acrylate, having weight-average molecular weight Mw of 200000 g/mol or lower, and acid number of at least 15 mg KOH/g; and an emulsified second acrylate having Mw of at least 300000 g/mol. Content of the alkali-soluble acrylate in the composition is equal to at least 3 wt %. The weight ratio of the alkali-soluble acrylate to the second emulsified acrylate ranges from 1:0.5 to 1:5, and the weight ratio of the alkali-soluble acrylate to the oxidative-curable resin ranges from 1:0.5 to 1:10. The oxidative curable resin is an alkyd resin, alkyd-urethane resin. The second acrylate is cross-linkable, for example azomethine cross-linkable links.

EFFECT: aqueous coating composition has good physical and mechanical properties.

9 cl, 3 ex