Melt processable polyester capable of forming an anisotropic mel

Details Melt processable polyester capable of forming an anisotropic mel Melt processable polyester capable of forming an anisotropic mel

1983-04-18

1984-09-25

Lee, Lester L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524601, 524604, 528125, 528128, 528173, 528190, 528191, 528193, 528194, 528271, C08G 6360

Patent

active

044736827

ABSTRACT:
The novel polyester of the present invention is capable of forming an anisotropic melt phase and may be prepared on a relatively economical basis. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 4,4'-dioxybiphenyl moiety and terephthaloyl moiety. The polyester has been found to be capable of undergoing melt extrusion at a sufficiently low temperature to form quality high performance fibers, films, and three-dimensional shaped articles. Such product surprisingly has been found to be capable of exhibiting unusually high modulus characteristics in combination with other desirable properties.

REFERENCES:
patent: 4184996 (1980-01-01), Calundann
patent: 4219461 (1980-08-01), Calundann
patent: 4256624 (1981-03-01), Calundann
patent: 4299756 (1981-11-01), Calundann
patent: 4318842 (1982-03-01), East et al.
patent: 4337190 (1982-06-01), Calundann

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