发明申请
US20100087605A1 PROCESS FOR PRODUCTION OF THERMOPLASTIC COPOLYMER 有权
生产热塑性共聚物的方法

PROCESS FOR PRODUCTION OF THERMOPLASTIC COPOLYMER
摘要:
A process for continuously producing a thermoplastic copolymer, in which a copolymer (A) containing unsaturated carboxylic acid alkyl ester units and unsaturated carboxylic acid units is produced and in succession heat-treated to perform intramolecular cyclization reaction by dehydration and/or dealcoholization reaction, for producing a thermoplastic copolymer (B) containing glutaric anhydride units and the unsaturated carboxylic acid alkyl ester units. The obtained copolymer is excellent in heat resistance and colorless transparency and very small in foreign matter content.
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