Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof
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United States of America Patent
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May 11, 1982
Grant Date -
N/A
app pub date -
May 23, 1980
filing date -
May 31, 1979
priority date (Note) -
Expired
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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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