Process for making polyesters containing low concentrations of d

Details Process for making polyesters containing low concentrations of d Process for making polyesters containing low concentrations of d

1997-10-14

1999-01-05

Mosley, Terressa

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528271, C08G 6302

Patent

active

058564241

ABSTRACT:
The present invention relates to a process for producing a high molecular weight polyester having less than about 0.5 weight % diethylene glycol comprising adding at least one carbonate compound to the ester exchange reaction product produced from reaction of a glycol component comprising ethylene glycol and an ester component comprising dimethylterephthalate, dimethylnaphthalenedicarboxylate and mixtures thereof wherein said reaction product is formed without a Ti catalyst.

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Chemical Abstracts, vol. 81, No. 18, Nov. 4, 1974, Columbus, OH, Abtract No. 106348, XP002054008 (see abstract) & JP 49 009 634 B (Teijin), Mar. 5, 1974.
Patent Abstracts of Japan, vol. 017, No. 689 (C-1143), Dec. 16, 1998 & JP 05 230201 A (Dainippon Ink & Chem Inc), Sep. 7, 1993 (see abstract).
Patent Abstracts of Japan, vol. 018, No. 163 (C-1181), Mar. 18, 1994, & JP 05 331299 A (Teijin Ltd), Dec. 14, 1993 (see abstract).
Patent Abstracts of Japan, vol. 095, No. 003, Apr. 28, 1995 & JP 06 345859 A (Teijin Ltd), Dec. 20, 1994 (see abstract).
Patent Abstracts of Japan, vol. 008, No. 024 (C-208), Feb. 2, 1984 & JP 58 191716 A (Toray KK), Nov. 9, 1983 (see abstract).
Patent Abstracts of Japan, vol. 010, No. 172 (C-354), Jun. 18, 1986 & JP 61 023623 A (Toray KK), Feb. 1, 1986 (abstract).

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