Process for producing fluorinated polymer having ion-exchange groups
US4298699A · kind A · utility
7Cited by
1References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 7, 1980 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Feb 7, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/184
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source. The fluorinated copolymer obtained by the copolymerization is treated with an alcohol at higher than 20.degree. C. in the form of particles before a molding. The melt flowability of the fluorinated copolymer is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.