Patent ID: 8084561

Claim:
A method of producing polymers which comprise, in copolymerized form, a) at least 50% by weight of olefinically unsaturated compounds selected from the group consisting of C 1 -C 18 -alkyl (meth)acrylates and b) at least a further monomer which is an olefinically unsaturated free-radically polymerizable compound containing urethane groups, by free-radical polymerization in solution, in an alcohol-comprising solvent which, based on the solvent, comprises 5 to 50% by weight of water, wherein the polymerization of a polymerization mixture comprising a) and b) in solution is carried out until a residual monomer content of at most 10% by weight is achieved, based on the solids content of the polymerization mixture, in the presence of at least one ethanol-soluble initiator, and a subsequent further polymerization of the polymerization mixture is carried out in the presence of at least one water-soluble initiator.