Patent ID: 8906992

Claim:
A thermoplastic molding composition, comprising: A) from 45 to 84.8% by weight of at least one polyether sulfone whose glass transition temperature is greater than 200° C. and comprising repeat units of the formula (I): in which t and q, independently of one another, are 0, 1, 2, or 3, each of Q, T, and Z, independently of the others, is a chemical bond or a group, selected from —O—, —S—, —SO 2 —, S═O, C═O, N═N—, with the proviso that at least one of the groups T, Q and Z is —SO 2 — and, if t and q are 0, Z is —SO 2 —, each of Ar and Ar 1 , independently of the other, is a C 6 -C 18 -arylene group, where this can have substitution by C 1 -C 12 -alkyl groups, by C 6 -C 18 -aryl groups, by C 1 -C 12 -alkoxy groups or by halogen atoms, B) from 15 to 54.8% by weight of at least one polysulfone having a glass transition temperature from 170° C. to 195° C. and comprising repeat units of the formula (II): in which R 1 is H or C 1 -C 4 -alkyl, each of Ar 2 and Ar 3 , independently of the other, is a C 6 -C 12 -arylene group, and Y is —SO 2 —, C) from 0.1 to 1.75% by weight of stearic acid, salts of stearic acid, esters of stearic acid, and/or stearates.