Working fluid containing perfluorodimethylether
US6156224A · kind A · utility
4Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1993 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Jun 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/43
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mixed working fluid having almost no influence on stratosphere ozone layer and capable of being a substitute for R22, comprising 15 to 90% by weight perfluorodimethylether and one or two selected from fluorinated dimethylethers consisting of exclusively two carbon atoms, one oxygen atom, hydrogen atoms and fluorine atoms, said fluorodimethylether being selected from the group consisting of 85% by weight or less pentafluorodimethylether, 50% by weight of less dimethylether, 60% by weight or less trifluorodimethylether, 60% by weight of less tetrafluorodimethylether, and 50% by weight or less difluorodimethylether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.