Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and methylbutane
US6635686B2 · kind B2 · utility
4Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and 2-methylbutane that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.