Preparation of small particle polybenzimidazole

Details Preparation of small particle polybenzimidazole Preparation of small particle polybenzimidazole

1983-04-13

1984-07-17

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528342, C08G 7318

Patent

active

044607636

ABSTRACT:
Polybenzimidazoles are prepared in the form of small particles by reaction of bis(o-diamine) substituted compounds with dicarboxylic acids or of o-diamino-substituted carboxylic acids in the presence of an inert, nonsolvent, liquid medium and polyphosphoric acid.

REFERENCES:
patent: 3313783 (1967-04-01), Iwakura et al.

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