A dispersion powder composition based on water-insoluble polymers with particularly
low water absorption comprises, based on the total weight of the polymer, an amount
in the range from 0.1 to 30% by weight of at least one carboxylic ester whose acid
component has at least 6 carbon atoms and whose alcohol component is a polyhydroxy
compound, preferably glycerol, diglycerol, or triglycerol. This is prepared by
mixing polymer and protective colloid with the carboxylic ester to prepare a dispersion
and then, where appropriate, drying this with simultaneous admixing of an anticaking
agent, and gives good results when used for modifying wallpaper pastes, mortars,
or concrete.
