Title:
METHOD FOR PREPARING POLY(1,4-CYCLOHEXANE-DICARBOXYLATES)
Document Type and Number:
WIPO Patent Application WO2000058382
Kind Code:
A3
Abstract:
Polyesters such as poly(1,4-cyclohexanedimethyl-1,4-cyclohexanedicarboxylate) are prepared by the reaction of at least one relatively non-volatile diol, preferably 1,4-cyclohexanedimethanol, with a 1,4-cyclohexanedicarboxylic acid ester in the presence of a catalyst such as a tetraalkyl titanate. Maximum molecular weight and crystallinity are provided by at least one of two options: conducting the reaction at a series of progressively increasing temperatures below 265 DEG C, with a residence time in the range of 40-120 minutes at temperatures above 250 DEG C; and conducting an initial stage of the reaction in the presence of at least one C2-6 aliphatic diol such as ethylene glycol, diethylene glycol or 1,4-butanediol.
Inventors:
BRUNELLE DANIEL JOSEPH
JANG TAESEOK
JANG TAESEOK
Application Number:
PCT/US2000/005064
Publication Date:
January 18, 2001
Filing Date:
February 28, 2000
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
C08G63/199; C08G63/82; C08G63/672; C08G63/685; C08G63/78; C08G63/85; C08G63/83; C08G63/84; (IPC1-7): C08G63/199
Foreign References:
| US4480086A | 1984-10-30 | |||
| US4665153A | 1987-05-12 | |||
| US2901466A | 1959-08-25 | |||
| US5859119A | 1999-01-12 | |||
| US5399661A | 1995-03-21 | |||
| US5633340A | 1997-05-27 |
Download PDF: