Patent ID: 7022344

Claim:
A process for producing a solid dosage form by mixing at least one polymer binder, at least one active ingredient and optionally conventional additives to form a plastic mixture, and shaping the plastic mixture, wherein the polymeric binder is a water-swellable graft copolymer which is obtained by free radical initiated polymerization of a) C l -C 30 -alkyl esters, hydroxy-C 2 -C 4 -alkyl esters, amides, mono- or di-C 1 -C 4 -alkylamides or nitrites of monoethylenically unsaturated C 3 -C 30 -mono- or dicarboxylic acids or mixtures thereof in the presence of b) homo- or copolymers of C 2 -C 4 -alkylene oxides as grafting base, and c) optionally one or more monomers having at least two non-conjugated ethylenically unsaturated double bonds, and wherein component a) optionally comprises up to 5% by weight, based on the total weight of component a), of an α,β-monoethylenically unsaturated C 3 -C 8 -carboxylic acid.