Process for sulfonating of polymers containing dicarboxylic acid

Details Process for sulfonating of polymers containing dicarboxylic acid Process for sulfonating of polymers containing dicarboxylic acid

1984-12-03

1987-02-17

Henderson, Christopher

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

Synthetic resins

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

C08F 836

Patent

active

046440356

ABSTRACT:
A process for producing sulfonated polymers containing styrene moieties and cyclic imide moieties comprises reacting a styrene/maleic anhydride copolymer with a primary amine to produce a polyimide and then subjecting the polyimide to sulfonation wherein both the imidization step and the sulfonation step are conducted in a solvent inert to both reaction steps, such as nitrobenzene.

REFERENCES:
patent: 3615531 (1971-10-01), Meyer
patent: 3730900 (1973-05-01), Perricone
patent: 4478727 (1984-10-01), Turner

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