Process for removing vinylidene chloride and other unsaturated compounds from 1,1-dichloro-1-fluoroethane
US5190626A · kind A · utility
5Cited by
5References
6Claims
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Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Vinylidene chloride is removed from 1,1-dichloro-1-fluoroethane (HCFC-141b) by contacting the HCFC-141b in the vapor phase with chlorine in the presence of ultraviolet light providing an exposure up to about 50 watts-hour/kg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.