AUXILIARY AND METHOD FOR SPRAY-DRYING AQUEOUS POLYMER DISPERSION, POLYMER POWDER, SYNTHETIC RESIN PLASTER, MINERAL BINDER, AND DRIED SYNTHETIC RESIN PLASTER COMPOUND

摘要

The use of polymers I comprising from 15 to 80% by weight of monomers of the formula I where R<1>, R<2> and R<3> are C1- to C3-alkyl, R<4> is C1- to C5-alkyl and X is O or NH, and from 20 to 85% by weight of other free-radical-copolymerisable monomers, as auxiliaries in the spray-drying of aqueous dispersions of polymers II which are different from the polymers I.