Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof
US4329435A · kind A · utility
56Cited by
2References
28Claims
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Key dates
| Filing date | May 23, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | May 23, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinyl ether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
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