Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1983-02-07
1984-01-31
Lee, Lester L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528190, 528191, 528193, 528194, 528220, 528271, 528298, C08G 6360
Patent
active
044291000
ABSTRACT:
A novel wholly aromatic polyester is provided which exhibits an optically anisotropic melt phase and an unusually low melting temperature which renders the same particularly suited for use as a matrix resin in the formation of a fiber reinforced composite article, etc. The polyester of the present invention consists essentially of recurring 6-oxy-2-naphthoyl moiety, p-oxybenzoyl moiety, 2,6-dioxyanthraquinone moiety, and dicarboxy aryl moiety (as described). The hydrogen atoms present upon the aromatic rings of these moieties optionally may be partially substituted (as described). The wholly aromatic polyester is capable of forming the desired anisotropic melt at a temperature below 260.degree. C., and in a particularly preferred embodiment at a temperature below approximately 250.degree. C.
REFERENCES:
patent: 4188476 (1980-02-01), Irwin
patent: 4224433 (1980-09-01), Calundann et al.
patent: 4355134 (1982-10-01), Charbonneau et al.
Calundann Gordon W.
Charbonneau Larry F.
Celanese Corporation
Lee Lester L.
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