Cyanoethylation of hydroxyethylated polybenzimidazole polymers

Details Cyanoethylation of hydroxyethylated polybenzimidazole polymers Cyanoethylation of hydroxyethylated polybenzimidazole polymers

1987-12-21

1989-09-19

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525433, 525435, 528331, 528342, C08G 6926

Patent

active

048682497

ABSTRACT:
A process for producing cyanoethyl derivatives of hydroxyethylated polybenzimidazole is provided. The process comprises the steps of preparing an hydroxyethylated polybenzimidazole solution, mixing with that solution a base with a pka of at least 9 to form an hydroxyethylated polybenzimidazole anion and reacting the anion with acrylonitrile to produce a cyanoethyl derivative of the hydroxyethylated polybenzimidazole polymer. The derivative can be formed into ultrafilters, ion exchange membranes and for other such separatory articles.

REFERENCES:
patent: 4734466 (1988-03-01), Kindler et al.

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