Benzobisazole copolymer system soluble in aprotic solvents

Details Benzobisazole copolymer system soluble in aprotic solvents Benzobisazole copolymer system soluble in aprotic solvents

1993-03-12

1994-05-17

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

525435, 528171, 528172, 528173, 528183, 528186, 528342, C08G 7318

Patent

active

053128958

ABSTRACT:
Para-ordered aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein n has a value of 0.05 to 1.00 and Q is a benzobisazole of the formula ##STR2## wherein X is --S-- or --O--, are soluble in aprotic solvents.

REFERENCES:
patent: 4785115 (1988-11-01), Tsai et al.
patent: 5081256 (1992-01-01), Arnold et al.
patent: 5140092 (1992-08-01), Arnold et al.
patent: 5175232 (1992-12-01), Arnold et al.
patent: 5216114 (1993-06-01), Walles et al.

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