Aqueous polytetrafluoroethylene dispersion composition and use thereof
US6153688A · kind A · utility
45Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1997 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Sep 29, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an aqueous polytetrafluoroethylene dispersion composition characterized in that the composition comprises 30 to 65 wt. % of polytetrafluoroethylene and a polyoxyethylene alkyl ether in an amount of 2 to 10 wt. % based on the polytetrafluoroethylene, the polyoxyethylene alkyl ether being represented by the formula EQU RO(CH.sub.2 CH.sub.2 O)nH wherein R is a saturated or unsaturated hydrocarbon group having 8 to 18 carbon atoms, and n is 5 to 18, having a cloud point of over 45.degree. C. to not higher than 85.degree. C. and containing 65 to 70 wt. % of ethylene oxide in the molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.