Preparation of N-substituted phenyl polybenzimidazole polymers

Details Preparation of N-substituted phenyl polybenzimidazole polymers Preparation of N-substituted phenyl polybenzimidazole polymers

1989-02-27

1990-06-12

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...

525420, 528331, 528342, 528348, C08G 7318

Patent

active

049333976

ABSTRACT:
This invention discloses a unique process for the preparation of N-substituted phenyl polybenzimidazole polymers from unsubstituted polybenzimidazole polymers. An unsubstituted polybenzimidazole polymer is first reacted with an alkali hydride to produce a polybenzimidazole anion which is then reacted with a substituted or an unsubstituted phenyl fluoride to produce N-substituted phenyl polybenzimidazole polymer. The N-substituted phenyl polybenzimidazole polymer produced by this process can be formed into a wide range of products, such as membranes, films resins or fibers. The produce can be designed to meet special applications by the choice of the substitutent. These N-substituted phenyl polybenzimidazole polymers can be utilized for numerous applications including reverse osmosis, ultrafiltration, microfiltration, electrodialysis, ion exchange and affinity chromatography.

REFERENCES:
patent: 4579915 (1986-04-01), Choe

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