Search International and National Patent Collections

1. (WO2001000706) CATALYST FOR POLYESTER PRODUCTION AND PROCESS FOR PRODUCING POLYESTER WITH THE SAME

Pub. No.:    WO/2001/000706    International Application No.:    PCT/JP2000/004159
Publication Date: Fri Jan 05 00:59:59 CET 2001 International Filing Date: Sat Jun 24 01:59:59 CEST 2000
IPC: C08G 63/82
C08G 63/85
C08G 63/87
Applicants: TEIJIN LIMITED

YAMAMOTO, Tomoyoshi

Inventors: YAMAMOTO, Tomoyoshi

Title: CATALYST FOR POLYESTER PRODUCTION AND PROCESS FOR PRODUCING POLYESTER WITH THE SAME
Abstract:
A catalyst for polyester production which is a product of the reaction of (A) a titanium compound ingredient comprising a titanium compound (1) represented by formula (I) and/or a titanium compound (2) obtained by reacting the titanium compound (1) with either an aromatic polycarboxylic acid represented by formula (II) or an anhydride thereof with (B) a phosphorus compound ingredient comprising a phosphorus compound represented by formula (III). A polymerization feed material comprising an alkylene glycol ester of an aromatic dicarboxylic acid and/or an oligomer thereof is condensation-polymerized in the presence of the catalyst to obtain a polyester which has a satisfactory hue and excellent moldability and less forms a deposit on a spinning nozzle. (R1 is C¿2-10? alkyl; p is 1 to 3; n is 2 to 4; R?2¿ is (un)substituted C¿6-20? aryl or C1-20 alkyl; and m is 1 or 2 and q is 0 or 1, provided that m+q is 1 or 2).