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...
Patent
1980-10-06
1982-03-09
Welsh, Maurice J.
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...
528173, 528190, C08G 6360
Patent
active
043188427
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 trans-1,4-cyclohexanedicarboxylic acid in the proportions indicated. The hydrogen atoms present upon the rings of these moieties optionally may be at least partially substituted (as described). The polyester is capable of forming the desired anisotropic melt at a temperature below approximately 350.degree. C., and in a particularly preferred embodiment at a temperature below approximately 320.degree. C.
REFERENCES:
patent: 4118372 (1978-10-01), Schaefgen
patent: 4161470 (1979-07-01), Calundann
patent: 4184996 (1980-01-01), Calundann
patent: 4219461 (1980-08-01), Calundann
patent: 4238599 (1980-12-01), Langley et al.
patent: 4256624 (1981-03-01), Calundann
Calundann Gordon W.
East Anthony J.
Barris Charles B.
Celanese Corporation
Welsh Maurice J.
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