Patent ID: 7419685

Claim:
A solid dosage form which comprises at least one active ingredient and optionally one or more conventional additives, and as polymeric binder a water-swellable graft copolymer or a mixture of graft copolymers, wherein the graft copolymer is obtained by free radical initiated polymerization of a) C 1 -C 8 -alkyl esters of α,β-monoethylenically unsaturated C 3 -C 8 -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, wherein the graft copolymer comprises components a) and b) in a ratio of from 85 to 55: 15 to 45 by weight, and the graft copolymer has a Fikentscher K value of from 7 to 100.