Preparation of oxysulfonylated polyesters

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

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528272, 528275, 528277, 528279, 528286, 528295, 528301, 528302, 528307, 528308, 5283086, 524706, 524710, 524779, 524783, C08G 6382, C08K 332

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057392617

ABSTRACT:
Oxysulfonylated polyesters, well suited for conversion into oriented composite polyester films, are prepared by polycondensing a lower alkyl diester of at least one aliphatic dicarboxylic acid and a lower alkyl diester of at least one aromatic dicarboxylic acid bearing an oxysulfonyl substituent, and optionally a lower alkyl diester of at least one aromatic dicarboxylic acid, with at least one diol, in the presence of a catalytically effective amount of at least one titanium compound and at least one manganese carboxylate.

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patent: 4499262 (1985-02-01), Fagerburg et al.
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patent: 4978740 (1990-12-01), Kawamoto et al.
patent: 5171308 (1992-12-01), Gallagher et al.
patent: 5191097 (1993-03-01), Niki et al.
Patent Abstracts of Japan, vol. 10, No. 383 (C-393)(2440) Dec. 23, 1986, & JP-A-61 174 223.

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