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METHOD AND DEVICE FOR RECOVERING LINEAR POLYESTERS FROM THEIR WASTE
METHOD AND DEVICE FOR RECOVERING LINEAR POLYESTERS FROM THEIR WASTE
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机译:从废料中回收线性聚酯的方法和装置
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摘要
A method and device for recovering linear polyesters, such as PET and PBT, from polyester waste of the most varied form, in a continuous manner, in which undried or not dried-through waste is melted, the polymer chains being hydrolytically degraded by adhering moisture, and in which diol, corresponding to the basic constitutional unit of the polymer, is added to the melt resulting in glycolytic degradation, and the melt so treated is further condensed to the desired degree of polymerization.
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