Working fluid containing tetrafluoroethane
US5370811A · kind A · utility
19Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1992 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Feb 11, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A working fluid comprising tetrafluoroethane and at least two fluorinated hydrocarbons 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.