| 摘要 |
A thermoplastic molding composition, comprising:
A) from 40 to 97.9% by weight of at least one polyether sulfone,B) from 2 to 59.9% by weight of at least one polysulfone,C) from 0.1 to 2% by weight of stearic acid,
and also, if appropriate, further additives and auxiliaries, has improved flowability, surface quality, and notched impact resistance, and can be used for the construction of headlamps. |
| 主权项 |
1. 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—, —SO2—, S═O, C═O, N═N—, with the proviso that at least one of the groups T, Q and Z is —SO2— and, if t and q are 0, Z is —SO2—, each of Ar and Ar1, independently of the other, is a C6-C18-arylene group, where this can have substitution by C1-C12-alkyl groups, by C6-C18-aryl groups, by C1-C12-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
R1 is H or C1-C4-alkyl, each of Ar2 and Ar3, independently of the other, is a C6-C12-arylene group, and Y is —SO2—, C) from 0.1 to 1.75% by weight of stearic acid, salts of stearic acid, esters of stearic acid, and/or stearates. |
