Compositions of 1,1,1,2,2,5,5,5-octafluoro-4-trifluormethypentane and use thereof for cleaning solid surfaces
US5073290A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Aug 17, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/5086
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Mixtures of the compound 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 2 to 10 weight percent ethanol, with about 3 to 11 weight percent isopropanol, with about 50 to 58 weight percent dichloromethane, and with about 1 to 9 weight percent acetonitrile, are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.