Polyesters of 1,2-bis(hydroxyphenyl) ethanes and aromatic dicarb

Details Polyesters of 1,2-bis(hydroxyphenyl) ethanes and aromatic dicarb Polyesters of 1,2-bis(hydroxyphenyl) ethanes and aromatic dicarb

1976-07-28

1978-07-25

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

260 334P, 260DIG24, 528193, 528194, 528176, 528190, 528125, C08G 6318

Patent

active

041028643

ABSTRACT:
Polyester condensates of aromatic dicarboxylic acids and diphenols containing 1,2-bis(hydroxyphenyl)ethane in which the hydroxyl is in the 3 or 4 position.
The component acids are selected from the group consisting of isophthalic acid, terephthalic acid, 3,3'-, 3,4'- and 4,4'-bibenzoic acids, 1,3-, 1,4-, 1,5-, 1,6-, 1,7-, 1,8-, 2,6-, and 2,7-naphthalenedicarboxylic acids and acids represented by the formula: ##STR1## wherein the carboxyl groups are in the 3- or 4- positions, and X is O, S, SO.sub.2, C.dbd.O, CH.sub.2, CH.sub.2 CH.sub.2, CH(CH.sub.3) or C(CH.sub.3).sub.2.
The diphenol comprises 1,2-bis(hydroxyphenyl)ethane and optionally a diphenol selected from the group consisting of resorcinol, hydroquinone, 3,3'-, 3,4'- and 4,4'-diphenols, 1,3-, 1,4-, 1,5-, 1,6-, 1,7-, 1,8-, 2,6- and 2,7-dihydroxynaphthalenes and diphenols represented by the formula: ##STR2## wherein the hydroxyl groups are in the 3- or 4- positions and Y is O, S, SO.sub.2, C.dbd.O, CH.sub.2, CH(CH.sub.3), C(CH.sub.3).sub.2 or (CH.sub.2).sub.3.
The aromatic polyesters have superior fire safety performance and are used for film, fiber and molding applications. Rapidly crystallizable polyesters may be obtained with superior solvent resistance and stress cracking resistance.

REFERENCES:
patent: 3028364 (1962-04-01), Conix et al.
patent: 3160602 (1964-12-01), Kantor et al.
patent: 3161710 (1964-12-01), Turner

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