Semifluorinated side chain-containing polymers
US5907017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fluorinated polymers for use per se or in a blend with compatible homopolymer or copolymer which is not fluorinated, for providing a low surface energy (anti-stick, non-wetting, low friction) surface which is stable on immersion in water, has a weight average molecular weight ranging from 10.sup.3 to 10.sup.6 and comprises backbone containing (a) methylene groups and (b) side chain bearing groups with side chain on each side chain bearing group having the formula --Q--(CF.sub.2).sub.q F wherein Q comprises alkylene moiety and wherein the fluoroalkyl group attached to Q is spaced by r atoms from the atom in the backbone to which Q is attached, wherein q ranges from 6 to 15, r ranges from 6 to 18, and the ratio of q to r ranges from 0.6:1 to 1.8:1. Preferred fluorinated polymers include semifluorinated block copolymers of modified isoprene and styrene and semifluorinated ionenes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.