Method of making thermotropic liquid crystalline polymers contai

Details Method of making thermotropic liquid crystalline polymers contai Method of making thermotropic liquid crystalline polymers contai

1996-03-22

1998-08-25

Hampton-Hightower, P.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528179, 528190, 528191, 528193, 528194, 528211, 528219, 528271, 528310, 528322, 528332, 528335, 528336, 528348, 524601, 524602, 524604, 524607, C08G 6944, C08G 7300

Patent

active

057984328

ABSTRACT:
Liquid crystalline polymers that are made from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, terephthalic acid, hydroquinone, and N-acetyl-4-aminophenol by heating the monomers in the presence of acetic anhydride are more easily synthesized in high molecular weight if isophthalic acid is also included as a monomer at a level of about 0.5 mole % to about 10 mole %.

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