Aqueous process for making fluoropolymers
US8765890B2 · kind B2 · utility
3Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2011 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Sep 15, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.