Refrigerating compositions based on hexafluoropropane, fluoroethers and hydrocarbons
US6221273A · kind A · utility
8Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jul 9, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azeotropic or near azeotropic compositions based on hexafluoropropane (R 236) as substitutes of CClF.sub.2 -CClF.sub.2 (R 114) which essentially consist of R 236 and bis(difluoromethyl)-ether or n-butane, or mixtures thereof, for heat pumps, air-conditioners, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.