Wholly aromatic polyesters comprising isophthalic acid, terephth

Details Wholly aromatic polyesters comprising isophthalic acid, terephth Wholly aromatic polyesters comprising isophthalic acid, terephth

1989-12-18

1991-11-19

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528194, C08G 6302, C08G 6318

Patent

active

050667670

ABSTRACT:
Wholly aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol, e.g. 4,4'-biphenol are described. The materials displayed are excellent overall combination of mechanical and thermal properties. Their melting points and heat distortion temperatures (264 psi) are at least about 260.degree. C. and 260.degree. C., respectively. These novel polymers can be melt-fabricated using standard injection molding, extrusion, and melt spinning techniques and yield fabricated articles with good surface characteristics.

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