Process for catalytic production of polyesters

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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252431C, 260446, 528286, C08G 6312

Patent

active

041169425

ABSTRACT:
A process for producing polyesters and copolyesters, useful for making films and fibers, by the polycondensation of dicarboxylic acids and aliphatic glycols using mixtures of antimony diglycollate and silicon compounds as catalysts.

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patent: 3377319 (1968-04-01), Wiener
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patent: 3546179 (1970-11-01), Koller
patent: 3758535 (1973-09-01), Vizurraga
patent: 3833630 (1974-09-01), Loeffler
Mehrotra et al., Jour. Ind. Chem. Soc., v. 42, No. 5, pp. 327-332, (1965).

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