Linear polyesters from aromatic dicarboxylic acids and cyclic al

Details Linear polyesters from aromatic dicarboxylic acids and cyclic al Linear polyesters from aromatic dicarboxylic acids and cyclic al

1981-02-17

1982-08-31

Welsh, Maurice J.

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

Synthetic resins

From carboxylic acid or derivative thereof

528274, C08G 6362

Patent

active

043473512

ABSTRACT:
Linear polyesters are produced by esterification of aromatic dicarboxylic acids with cyclic alkylene carbonates in the presence of organic compounds containing at least one six-membered aromatic nitrogen-containing heterocyclic moiety followed by polycondensation of the resulting low molecular weight ester.

REFERENCES:
patent: 3215731 (1965-11-01), Bearden et al.
patent: 3549692 (1970-12-01), Bockmann et al.
patent: 4079045 (1978-03-01), Lazarus et al.

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