Liquid phase fluorination process and fluorinated organic products resulting therefrom
US5545773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/21
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In an improved process and plant for carrying out liquid phase fluorination in the presence of a catalyst, consisting in reacting hydrofluoric acid and an organic starting material in a reaction zone, and in separating, in a separating zone, reactional mixture and at least one light fraction containing the desired fluorinated organic products and at least a first part of the sub-fluorinated organic products formed, and a heavy fraction that includes the remainder of the sub-fluorinated organic products formed, and further comprising partial condensation of the said light fraction in order to obtain a gaseous phase containing the desired fluorinated organic products and a liquid phase containing said first part of the said sub-fluorinated organic products, said heavy fraction being returned to said reaction zone and said liquid phase being returned as a reflux to the top of the separation zone, intermediate recovery is carried out at, or in the proximity of, the lower portion of said separation zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.