Patent ID: 8222342

Claim:
A polymer blend comprising the components: (a) from 40% to 95% by weight of at least one polyaryl ether copolymer constructed of (a1) from 50% to 99.9% by weight of building units of the general formula I having the following meanings: t and q: independently are 0, 1, 2 or 3, Q, T and Y: each independently are a chemical bond or group selected from the group consisting of —O—, —S—, —SO 2 —, S═O, C═O, —N═N—, —R a C═CR b and —CR c R d , where R a and R b are each independently a hydrogen atom or a C 1 -C 12 -alkyl group and R c and R d are each independently a hydrogen atom, a C 1 -C 12 -alkyl, C 1 -C 12 -alkoxy or C 6 -C 18 -aryl group, at least one of Q, T and Y being other than —O— and at least one of Q, T and Y being —SO 2 —, and Ar and Ar 1 : independently are C 6 -C 18 -arylene, from 0% to 40% by weight of further building units II selected from segments of one or more thermoplastic polymers, and (a2) from 0.1% to 10% by weight of at least one crosslinker V having at least three hydroxyl functionalities, the at least one crosslinker V being present in component (a) in converted form and the sum total of % by weight for (a1) and (a2) being 100% by weight, and from 5% to 60% by weight of at least one hydrophilic polymer selected from the group consisting of polyvinylpyrrolidone, polyvinylpyrrolidone copolymers, polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, water-soluble cellulose derivative, polyamide, polyvinyl acetate and polyvinyl alcohol.