Polyester of 6-hydroxy-2-naphthoic acid, para-hydroxy...

Details Polyester of 6-hydroxy-2-naphthoic acid, para-hydroxy... Polyester of 6-hydroxy-2-naphthoic acid, para-hydroxy...

C - Chemistry, Metallurgy

08

G

402/190, 402/191

C08G 63/60 (2006.01) C08L 67/04 (2006.01)

Patent

CA 1138593

Abstract of the Disclosure A novel polyester is provided which has been found to exhibit a thermotropic (i.e. anisotropic) melt phase at a temperature which enables it readily to under- go melt processing to form quality fibers, molded articles, etc. The polyester of the present invention contains sub- stantial concentrations of recurring 6-oxy-2-naphthoyl and p-oxybenzoyl 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 aniso- tropic mel at a temperature below approximately 320°C., and in a particularly preferred embodiment at a temperature below approximately 300° C.

350440

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