Wholly aromatic polyester capable of forming an anisotropic melt

Details Wholly aromatic polyester capable of forming an anisotropic melt Wholly aromatic polyester capable of forming an anisotropic melt

1981-08-03

1983-02-15

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...

528191, 528193, 528206, 528271, 528272, 528299, 528305, C08G 6302

Patent

active

043742289

ABSTRACT:
A novel wholly aromatic polyester is provided which exhibits an anisotropic melt phase and which is capable of readily undergoing melt processing. The polyester of the present invention consists essentially of the recurring units (a) paraoxybenzoyl moiety, (b) bromo-substituted-para-oxybenzoyl moiety, and (c) meta-oxybenzoyl moiety. The resulting polymer may be economically produced. Additionally, it may be melt processed at an advantageous temperature which makes possible the utilization of standard equipment such as that heretofore utilized for the melt processing of polyethylene terephthalate.

REFERENCES:
patent: 3444131 (1969-05-01), Rosenbrock et al.
patent: 3759870 (1973-09-01), Economy et al.
patent: 3767621 (1973-10-01), Suzuki et al.
patent: 4067852 (1978-01-01), Calundann
patent: 4130545 (1978-12-01), Calundann
patent: 4146702 (1979-03-01), Morris et al.
patent: 4267304 (1981-05-01), Feasey et al.

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