Process for producing fluorinated polymer having ion-exchange groups
US4320205A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J39/20
- 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 and in the presence of a specific molecular weight regulator. The specific molecular weight regulator is selected from the group consisting of aliphatic alkanes alicyclic alkanes and water soluble organic solvents and controls the molecular weight without lowering the copolymerization velocity and without lowering the stability of the aqueous latex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.