Melt processable, liquid crystalline polyesters

Details Melt processable, liquid crystalline polyesters Melt processable, liquid crystalline polyesters

1988-08-01

1989-07-18

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528190, 528193, 528272, 528304, 528305, G08G 6360

Patent

active

048494992

ABSTRACT:
A high use temperature wholly aromatic polyester resin, comprising, (i) a diacid component comprising 2,6-naphthalenedicarboxylic acid (N) and terephthalic acid (T) monomer units, wherein the ratio N:T is from about 0.25 to about 4.0, (ii) an aromatic diol component, comprising 4,4'-dihydroxybiphenyl monomer units, and (iii) 10-80 mole percent p-hydroxybenzoic acid monomer units, based on the total monomer units.

REFERENCES:
patent: 3637595 (1972-01-01), Cottis et al.
patent: 4067852 (1978-01-01), Calundans
patent: 4169933 (1979-10-01), Jackson, Jr. et al.
patent: 4639504 (1987-01-01), Cottis

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