Hard capsules comprising polymers of vinyl esters and polyethers, their use and production

摘要

The present invention relates to hard capsules comprising(A) polymers obtainable by free-radical polymerization ofa) at least one vinyl ester in the presence ofb) polyether-containing compounds andc) where appropriate one or more other copolymerizable monomers c) and subsequent at least partial hydrolysis of the ester functions in the original monomers a),with the proviso that in the absence of another copolymerizable monomer c) the polyether-containing compound b) must have a number average molecular weight <=10,000,(B) where appropriate structure-improving auxiliaries and(C) other conventional shell constituents, the production and use thereof.