Novel impregnated material of a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether
US4670328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Feb 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2549
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An impregnated material comprising an organic or inorganic material selected from the group consisting of a woven fabric, a non-woven fabric and an open cell porous material which is impregnated with a copolymer which comprises 50 to 95% by mole of repeating units derived from tetrafluoroethylene and 5 to 50% by mole of repeating units derived from perfluoroalkyl vinyl ether of the formula: EQU CF.sub.2 .dbd.CFOR.sub.f (I) wherein R.sub.f is a C.sub.1 -C.sub.6 perfluoroalkyl group or a group of the formula: EQU --(CF.sub.2 CFXO).sub.n --R.sub.f (II) wherein R.sub.f is the same as defined above, X is a fluorine atom or a trifluoromethyl group and n is an integer of 1 to 10, which has good chemical, corrosion, solvent and oil resistance as well as water- and oil-repellence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.