FIELD: chemistry.
SUBSTANCE: invention refers to the dry powder compositions containing water-soluble powder polymers, to the method of obtaining powder compositions (versions), to the water composition of the protective coating, and to method of obtaining water composition of the protective coating. A dry powder composition comprising water-soluble powder polymers and a component in a powder form, comprises, as a powder polymer, polyacrylamides, polyacrylamide derivatives, guar gums, or hydroxyethylcellulose. As a component, the composition contains a component selected from a group consisting of poly (metil vinil ether-alt-maleic acid) copolymers poly (methyl vinyl ether-alt-maleic acid), poly (methyl vinyl ether-alt-maleic anhydride) or poly (methyl vinyl ether-alt-maleic anhydride), poly (styrene-co-maleic acid), copolymer of poly (styrene-co-maleic acid ether), copolymer of poly (styrene-co-maleic anhydride), copolymer of poly (styrene-co-maleic anhydride ether), and their combinations. The preparation of the dry powder composition comprises mixing the water-soluble powder polymers with the component or applying the powder polymers to the component. The water coating composition includes a dry powder mixture and a latex. The water coating composition is prepared by adding one dry powder composition to the coating composition comprising latex, while mixing the formulation.
EFFECT: production of a dry powder composition that has improved dispersibility in water as compared to water-soluble powder polymers.
12 cl, 3 dwg, 2 tbl, 8 ex
