Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1990-04-04
1991-05-14
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528176, 528193, 528271, 528272, C08G 6302, C08G 6318, C08G 6300
Patent
active
050157221
ABSTRACT:
The novel polyester of the present invention is melt processable and is capable of forming an anisotropic melt phase. The polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety. Other key moieties are 4-oxybenzoyl moiety, terephthaloyl moiety, 1,4-dioxyphenylene moiety, and 4,4'-dioxybiphenyl moiety. The presence of the 1,4-dioxyphenylene moiety in the specified concentration in combination with the other moieties surprisingly has been found to be capable of advantageously lowering the melting temperature of the resulting polyester while making possible the substantial maintenance of a highly attractive heat deflection temperature in molded articles formed from the same. Fibers which exhibit a relatively high modulus also may be formed.
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Charbonneau Larry F.
Flint John A.
Kiss Gabor D.
Shepherd James P.
Anderson Harold D.
Hoechst Celanese Corporation
Mosley T.
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