Reaction of hexafluoropropene oxide with fluorinated carboxylic acid fluorides
US4940814A · kind A · utility
12Cited by
12References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of halogenated carboxylic acid fluorides, in which a carboxylic acid fluoride is reacted with hexafluoropropene oxide in the presence of a catalyst system composed of an alkali metal fluoride, a carboxylic acid dinitrile and at least one ether of the formula EQU CH.sub.3 O--(CH.sub.2 CH.sub.2 O).sub.z --CH.sub.3 (V) in which z denotes an integer from 2 to 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.