Non-azeotropic refrigerant composition of CO.sub.2, R-125, R-143a and R-22
US6106740A · kind A · utility
14Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-azeotropic refrigerant is described comprising (A) carbon dioxide (CO.sub.2), (B) pentafluoroethane (R-125), (C) 1,1,1-trifluoroethane (R-143a) and (D) chlorodifluoromethane (R-22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.