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1. (WO1998050448) PROCESS FOR CONTINUOUSLY PRODUCING POLYESTERS

Pub. No.:    WO/1998/050448    International Application No.:    PCT/JP1998/001977
Publication Date: Fri Nov 13 00:59:59 CET 1998 International Filing Date: Fri May 01 01:59:59 CEST 1998
IPC: C08G 63/78
Applicants: TEIJIN LIMITED

MIYAJIMA, Kazumoto

KURIHARA, Hideshi

Inventors: MIYAJIMA, Kazumoto

KURIHARA, Hideshi

Title: PROCESS FOR CONTINUOUSLY PRODUCING POLYESTERS
Abstract:
A process for continuously producing polyesters by continuously melt-polymerizing starting materials composed of a dicarboxylic acid mainly comparing an aromatic dicarboxylic acid, an alicyclic dicarboxylic acid, an aliphatic dicarboxylic acid, or an ester-forming derivative of such acids and a diol component, characterized by condensing the diol component which is a distillate containing an adherent substance in a polycondensation reaction, removing the adherent substance by centrifugation, distilling the remaining diol component, and subjecting the obtained distillate to esterification or transesterification.