Method of dry cleaning using a highly fluorinated organic liquid
US6053952A · kind A · utility
15Cited by
24References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Sep 3, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides dry cleaning liquid formulations and methods for their use based on a highly fluorinated organic solvent which contains at least one hydrogen atom per molecule, in particular, highly fluorinated hydrocarbons or highly fluorinated ethers. In a preferred embodiment the cleaning liquid contains an HFC or HFE in combination with dichloroethylene. The addition of a surfactant enhances the ability of the liquid to remove water-soluble soils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.