POLY(ARYL ETHER SULFONE) COMPOSITION AND METHOD OF MAKING

摘要

A poly(aryl ether sulfone) comprises units of formula (I):;;wherein Ar1 is a divalent C6-C15 aromatic group, Ar2 is a divalent C6-C15 aromatic group, Ar3 is a divalent C6-C15 aromatic group, and n is greater than 1;;and a terminal group of formula (II) derived from a monofunctional phenoxide;;wherein is X is a hydrogen atom or an organic substituent having from 1 to 20 carbon atoms; wherein the poly(aryl ether sulfone) has a hydroxyl group content greater than 0 and less than 50 parts per million (ppm), based on the poly(aryl ether sulfone) weight, a glass transition temperature of 180 to 290° C., a weight average molecular weight of 20,000 to 100,000, a halogen content of greater than 0 and less than 3000 ppm based on the poly(aryl ether sulfone) weight. The poly(aryl ether sulfone) can have a thermal stability factor greater than or equal to 90%. The poly(aryl ether sulfone) can have a yellowness index (YI) less than 120 after an article made from the poly(aryl ether sulfone) is exposed to a temperature of 200° C. in ambient air for 28 days. The poly(aryl ether sulfone) is free of methoxy groups. Methods of making the polymer are also disclosed.

主权项

1. A poly(aryl ether sulfone) comprising units of formula (I): wherein Ar1 is a divalent C6-C15 aromatic group, Ar2 is a divalent C6-C15 aromatic group, Ar3 is a divalent C6-C15 aromatic group, and n is greater than 1; and a terminal group of formula (II) derived from a monofunctional phenoxidewherein X is a hydrogen atom or an organic substituent having from 1 to 20 carbon atoms and wherein the polymer is methoxy free and the polymer has an OH content greater than 0 and less than 50 ppm, based on polymer weight, a glass transition temperature of 180 to 290° C., a molecular weight of 20,000 to 100,000, and a halogen content of more than 0 and less than 3000 ppm.