Polyester resin exhibiting optical anisotropy in molten state co

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

1989-07-03

1991-01-08

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, 528274, 524601, 524604, 524605, C08G 6302, C08G 6318, C08G 6300, C08G 6700

Patent

active

049837133

ABSTRACT:
A novel polyester resin is provided which exhibits an anisotropic melt phase. The polymer comprises recurring 4-oxybenzoyl units, 6-oxy-2-naphthoyl units, aromatic dicarboxy units, and aromatic diol units as described in appropriate concentrations. The resulting polyester exhibits excellent melt processability in combination with good mechanical properties and a good retention of properties at elevated temperatures.

REFERENCES:
patent: 4219461 (1980-08-01), Calundann
patent: 4318841 (1982-03-01), East et al.
patent: 4370466 (1983-01-01), Siemionko
patent: 4473682 (1984-09-01), Calundann et al.
patent: 4522974 (1985-06-01), Calundann et al.
patent: 4684712 (1987-08-01), Ueno et al.

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