FIELD: chemistry.
SUBSTANCE: polymer powder compositions are obtained via radical polymerisation of one or more ethylenically unsaturated monomers carried out in an aqueous medium in the presence of a nonionic protective colloidal and/or nonionic emulsifying agent, followed by drying. Aqueous dispersions of polymers undergo drying in the presence of an additional 0.1-20 wt % cation-active protective colloid, in terms of the amount of polymer components of the polymer dispersion. The protective colloid is selected from a group comprising homopolymers or copolymers of one or more cation-active monomers as a drying-promoting agent. The invention also describes cation-stabilised and water-redispersible polymer powder compositions for use in construction chemistry and use of the polymer powder composition in construction chemistry products, in production of adhesives and in production of coating materials.
EFFECT: polymer powder compositions have caking resistance and high redispersibility in water.
9 cl, 3 tbl, 15 ex
