Copolyesters capable of forming an anisotropic melt

Details Copolyesters capable of forming an anisotropic melt Copolyesters capable of forming an anisotropic melt

1976-12-21

1978-02-21

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 47C, C08L 6702

Patent

active

040752623

ABSTRACT:
This invention relates to a class of novel fiberforming, melt spinnable copolyesters capable of forming an anisotropic melt, said copolyester consisting essentially of units of the formula ##STR1## wherein units II and III are present in substantially equimolar amounts; Ar is selected from the group of chloro-, methyl-, 2,6-dichloro-, 2,6-dimethyl-1,4-phenylene or chloro-4,4'-biphenylene radicals; the copolyester containing from 15-70% by weight of unit I, and to the fibers and other shaped articles prepared therefrom. Also comprehended by this invention are the novel, optically anisotropic polyester melts from which these shaped articles can be prepared.

REFERENCES:
patent: 3037960 (1962-06-01), Frazer
patent: 3160603 (1964-12-01), Holub

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