Process for the synthesis of polybenzazole polymers

Details Process for the synthesis of polybenzazole polymers Process for the synthesis of polybenzazole polymers

1994-06-28

1995-06-06

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 86, 528183, 528186, 528210, 528336, 528337, 528342, 528397, 528422, C08G 6300

Patent

active

054224160

ABSTRACT:
Described herein is a process for synthesizing polybenzazole polymers comprising: (a) contacting a bis(trihalomethyl) organic compound with a polyphosphoric acid under reaction conditions sufficient to convert at least about 25 mole percent of the trihalomethyl groups present to carboxylic acid or carboxylate groups, forming a reaction mixture thereby; and (b) contacting the reaction mixture with an aromatic compound having two o-amino-basic moieties under reaction conditions sufficient to form a polybenzazole polymer.

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