Polyester of phenyl-4-hydroxybenzoic acid, aromatic diol, and ar

Details Polyester of phenyl-4-hydroxybenzoic acid, aromatic diol, and ar Polyester of phenyl-4-hydroxybenzoic acid, aromatic diol, and ar

1980-03-10

1981-11-10

Welsh, Maurice J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 40P, 528173, 528176, 528190, 528193, 528194, C08G 6306

Patent

active

042997569

ABSTRACT:
A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase at a temperature which enables it readily to undergo melt processing to form quality fibers, films, molded articles, etc. The polyester consists essentially of substantial concentrations of 3-phenyl-4-oxybenzoyl and/or 2-phenyl-4-oxybenzoyl moieties in combination with dioxy aryl and dicarboxy aryl moieties in the proportions indicated. In a further embodiment 4-oxybenzoyl and/or 6-oxy-2-naphthoyl moieties also are included. The wholly aromatic polyester is capable of forming an anisotropic melt at a temperature below approximately 350.degree. C., and preferably at a temperature below approximately 320.degree. C.

REFERENCES:
patent: 4067852 (1978-01-01), Calundann
patent: 4130545 (1978-12-01), Calundann
patent: 4161470 (1979-07-01), Calundann
patent: 4184996 (1980-01-01), Calundann
patent: 4219461 (1980-08-01), Calundann

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