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 of;a) at least one vinyl ester in the presence of;b) polyether-containing compounds and;c) 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.