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US5143984A Process to prepare high molecule weight polyester 失效
制备高分子量聚酯的方法

Process to prepare high molecule weight polyester
摘要:
A process for preparing a polyester having an inherent viscosity of at least 0.5 comprising(A) preparing an admixture of a molten polyester having an inherent viscosity of less than 0.5, a titanium alkoxide and a 13X zeolite, and(B) subjecting the admixture to a time and temperature sufficient to increase the inherent viscosity of the polyester to at least 0.5.
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