Process for the production of a permselective and flexible anion exchange membrane
US4871778A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41J5/042
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.