| 摘要 |
technology of paintwork materials, more particularly aqueous dispersive compositions intended for wide range of purposes. SUBSTANCE: described is aqueous dispersive composition which comprises aqueous dispersion of polyvinyl acetate, solution of isoprene rubber in nephras or white spirit, milled natural chalk, sodium salt of carboxy methyl cellulose, aerosil, oxyethylated alkylamide, polyvinyl alcohol, and water. Aqueous dispersive composition further comprises water-soluble chitosan salt additive selected from chitosan hydrochloride, chitosan sulfate, chitosan formate, ratios of components being as follows, wt.%: aqueous dispersion of polyvinyl acetate, 1.0-30.0; solution of isoprene rubber in or white spirit, 8.0; milled natural chalk, 15.0; zinc white, 20.0; sodium salt of carboxymethyl cellulose, 1.5-2.0; aerosil, 0.05-0.50; oxyethylated alkylamide, 0.2; polyvinyl alcohol; water soluble chitosan salt, 0.01-1.00; and water, the balance. EFFECT: higher moisture resistance and resistance to fungal microflora. 2 tbl
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