Linear copolyesters

Details Linear copolyesters Linear copolyesters

1977-07-05

1978-07-04

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C08G 6318

Patent

active

040987698

ABSTRACT:
Linear copolyesters formed from (A) isophthalic acid and, optionally, terephthalic acid and (B) bis(4-beta-hydroxyethoxyphenyl) sulfone and ethylene glycol are described. The linear polyesters contemplated have glass transition temperatures higher than that of poly(ethylene terephthalate) and oxygen and CO.sub.2 permabilities less than that of poly(ethylene terephthalate).

REFERENCES:
patent: 2593411 (1952-04-01), Caldwell

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