PREPARATION OF OLIGOESTER DIOLS BY ALCOHOLYTIC DESTRUCTION OF POLY(ETHYLENE-TEREPHTHALATE)

被引：61

作者：

HALACHEVA, N

NOVAKOV, P

机构：

[1] Technological University of Sofia, 1756 Sofia

来源：

POLYMER | 1995年 / 36卷 / 04期

关键词：

ALCOHOLYSIS; POLY(ETHYLENE TEREPHTHALATE); OLIGOESTERS;

D O I：

10.1016/0032-3861(95)93119-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The alcoholytic destruction of poly(ethylene terephthalate) (PET) with diethylene glycol (DEG) is studied. The influence of the DEG amount on the structure of the obtained oligoesters is investigated. On the basis of the experimental results, a probable mechanism is proposed for the alcoholysis of PET at large excess of DEG. The molecular weight characteristics of the obtained oligomers are studied and kinetic schemes are assumed for alcoholysis at different molar ratios of the starting components. Optimal conditions are established for the preparation of linear oligoester diols suitable for the synthesis of water-borne polyurethanes.

引用

页码：867 / 874

页数：8

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