WATER-DISPERSED LACQUER COMPOSITION Russian patent published in 2007 - IPC C09D5/02 C09D5/14 

FIELD: paint-and-varnish industry.

SUBSTANCE: invention relates to polymer compositions to prepare biocidally active lacquer coatings. Composition proposed by invention contains nonionic water-dilutable film-forming component in the form of aqueous polymer dispersion, aqueous solution of biocide additive(polyhexamethylene-guanidine), and polymer paste. The latter is prepared from pigment, filler, and dispersing solution containing water, anionic polymeric disperser, nonionic cellulose thickener, emulsifier, and organic solvent, weight ratio of nonionic cellulose thickener to anionic polymeric disperser ranging from 2.0:1.0 to 1.0:2.0. In particular, nonionic cellulose thickener is a hydrocellulose derivative in amount 0.5=1.0%, anionic polymeric disperser is represented by sodium and ammonium salts of polycarboxylic acids (0.17-0.55%), and anionic polymeric disperser is sodium polyphosphate.

EFFECT: increased resistance of coating to water in cases where humidity is present under indoor conditions and ensured bactericidal effect when dry surface is wiped with wet cloth.

4 cl, 2 tbl