Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1987-07-30
1989-10-03
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
521 31, C08D 520
Patent
active
048717789
ABSTRACT:
The invention relates to a process for the production of a permselective flexible anion exchange membrane by application of a solution of a polymer containing polyvinylpyridine and/or a derivative thereof as anion exchanger to a carrier material and evaporation of the solvent. According to the invention, a solution of a copolymer of vinylpyridine and/or a derivative thereof and of a monomer, which does not form fixed ions either during the cross-linking reaction or in the electrolyte, or of a mixture of such monomers is applied to the carrier material, the film is subjected while moist to quaternization and the membrane formed is optionally removed from the carrier material. In preferred embodiments of the invention, the solution of the copolymer of vinylpyridine and the monomer additionally contains polyvinylbenzyl halide or a copolymer of vinylbenzyl halide and a monomer.
REFERENCES:
patent: 2828270 (1958-03-01), Murato
patent: 2899386 (1959-08-01), Adams et al.
patent: 3752794 (1973-08-01), Beskai
patent: 4116889 (1978-09-01), Chlovda et al.
patent: 4322501 (1982-03-01), Lee et al.
Frauhofer-Gesellschaft zur Foderung der angewandten Forschung e.
Kulkosky Peter F.
Schneider Walter N.
Schofer Joseph L.
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