Rigid-rod benzimidazole pendant benzobisazo polymer

Details Rigid-rod benzimidazole pendant benzobisazo polymer Rigid-rod benzimidazole pendant benzobisazo polymer

1991-04-16

1992-08-18

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528337, 528341, 528342, C08G 7318, C08G 7332, C08G 7322

Patent

active

051400928

ABSTRACT:
Provided is a para-ordered aromatic heterocyclic polymer having repeating units of the formula --(--Q--Ar--)-- wherein Q is ##STR1## wherein X is --O--, --NH-- or --S--, and wherein Ar is ##STR2##

REFERENCES:
patent: 4892921 (1990-01-01), Tsai et al.
patent: 4892953 (1990-01-01), Arnold et al.

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