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US5266601A Process for preparing polybutylene terephthalate from pet scrap 失效
从宠物废料制备聚对苯二甲酸丁二醇酯的方法

Process for preparing polybutylene terephthalate from pet scrap
摘要:
Process for producing polybutylene terephthalate with less than 1.0 wt % units derived from ethylene glycol from polyethylene terephthalate scrap by diolysis and ester exchange with 1,4-butanediol and subsequent polycondensation.
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