Process for producing fluorinated copolymer having ion-exchange groups
US4138373A · kind A · utility
17Cited by
1References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 27, 1977 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Sep 27, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fluorinated copolymer having 1 to 50 mole % of a component having functional group of carboxylic acid group or a group which can be converted to carboxylic acid group, is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having the functional group in the presence of a polymerization initiator source in an aqueous medium under the pressure of higher than 7 kg/cm.sup.2 whereby the copolymer having high molecular weight (T.sub.Q of higher than 150.degree. C.) and an ion exchange capacity of 0.5 to 4 meq/g dry polymer is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.