Patent ID: 9655853
Date: 2017-05-23
CPC Classifications: A61K,A61P

Claim:
1. A pharmaceutical dosage form having a breaking strength of at least 300 N and comprising: a pharmacologically active compound, an anionic polymer bearing carboxylic groups, wherein the anionic polymer is derived from an ethylenically unsaturated monomer selected from (alk)acrylic acids, (alk)acrylic anhydrides, alkyl (alk)acrylates, or a combination thereof, wherein the anionic polymer is cross-linked with at least one cross-linking agent selected from the group consisting of allyl sucrose, allyl pentaerythritol, divinyl glycol, divinyl polyethylene glycol and (meth)acrylic acid esters of diols, and wherein the content of the anionic polymer is ≧20 wt.-%, based on the total weight of the pharmaceutical dosage form, and a nonionic surfactant.