Process for preparing fluorine-containing polymers having carbox

Details Process for preparing fluorine-containing polymers having carbox Process for preparing fluorine-containing polymers having carbox

1979-11-28

1981-10-13

Hamrock, William F.

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

Synthetic resins

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

521 27, 521 31, 521 32, 521 33, 525331, 525343, 525344, 525354, 525356, 525377, 525383, 525384, 525386, 525387, 525388, C08F 806

Patent

active

042949432

ABSTRACT:
A process for preparing a fluorine-containing polymer having carboxyl groups, which comprises subjecting a fluorine-containing polymer having sulfonyl halide groups bonded to it to an oxidation reaction at a temperature of not more than 250.degree. C.; and a process for electrolysis, using as a diaphragm a member of the polymer obtained by the above process.

REFERENCES:
patent: 4075184 (1978-02-01), Rechlicz
patent: 4200711 (1980-04-01), Onoue et al.

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