Process for producing fluorinated copolymer having ion-exchange groups
US4116888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Nov 8, 1996 |
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 0 to 10 mole of an inert organic solvent per 1 mole of the functional monomer under the pressure of higher than 6 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.