Polyester resin exhibiting optical anisotropy in molten state wh

Details Polyester resin exhibiting optical anisotropy in molten state wh Polyester resin exhibiting optical anisotropy in molten state wh

1989-04-10

1990-04-24

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

524599, 524601, 528176, 528193, 528206, 528271, C08G 6302

Patent

active

049201972

ABSTRACT:
A polyester is provided which exhibits an anisotropic melt phase and an advantageous combination of (1) melt processability and (2) excellent heat resistance in articles formed from the same. The polyester consists essentially of p-oxybenzoyl units, 6-oxy-2-naphthoyl units, terephthaloyl units, and metadioxyphenylene units in appropriate concentrations (as described. The aromatic rings of such units optionally may be substituted as discussed.

REFERENCES:
patent: 3778410 (1973-12-01), Kuhfuss et al.
patent: 3975487 (1976-08-01), Cottis et al.
patent: 4161470 (1979-07-01), Calundann
patent: 4684712 (1987-08-01), Ueno et al.

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