Working fluid
US5304319A · kind A · utility
5Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Feb 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A working fluid comprising tetrafluoroethane, difluoroethane and at least one fluorinated hydrocarbon having a boiling point of not higher than -40.degree. C. under atmospheric pressure selected from the group consisting of methane derivatives and ethane derivatives which consist of one or two carbon atoms, hydrogen atoms and fluorine atoms, which has very small influence on the ozone layer in the stratosphere and is suitable as a substitute working fluid for chlorodifluoromethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.