Polyester of 6-hydroxy-2-naphthoic acid, aromatic diol, and arom

Details Polyester of 6-hydroxy-2-naphthoic acid, aromatic diol, and arom Polyester of 6-hydroxy-2-naphthoic acid, aromatic diol, and arom

1979-07-02

1981-03-17

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 40P, 528173, 528190, 528271, C08G 6360, C08G 6366, C08G 6368

Patent

active

042566240

ABSTRACT:
A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase which enables it readily to undergo melt processing to form quality fibers, films, molded articles, etc. The polyester of the present invention contains recurring 6-oxy-2-naphthoyl moieties in addition to moieties derived from at least one aromatic diol and at least one aromatic diacid in the proportions indicated. The hydrogen atoms present upon the aromatic rings of these moieties optionally may be at least partially substituted (as described). The wholly aromatic polyester is capable of forming the desired anisotropic melt at a temperature below approximately 400.degree. C., and in a particularly preferred embodiment at a temperature below approximately 320.degree. C.

REFERENCES:
patent: 3778410 (1973-12-01), Kuhfuss et al.
patent: 4067852 (1978-01-01), Calundann
patent: 4083829 (1978-04-01), Calundann et al.
patent: 4161470 (1979-07-01), Calundann
patent: 4169933 (1979-10-01), Jackson, Jr. et al.

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