Catalytic process for the manufacture of acid fluoride
US4840750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Catalytic process for the manufacture of acid fluoride from carbon monoxide, hydrogen fluoride, and an aliphatic hydrocarbon stream mainly containing at least one alkane containing 3 to 4 carbon atoms, comprising the following series of stages: PA1 (a) introduction of at least one fluid chosen from carbon monoxide and the hydrocarbon stream into a reactor in the presence of a superacidic catalyst system consisting essentially of hydrogen fluoride and antimony pentafluoride, PA1 (b) where appropriate, if it has not already been introduced during stage (a), introduction into the reactor of a fluid chosen from carbon monoxide and the hydrocarbon stream, the reactor being at a temperature not above 60.degree. C. to permit the formation, principally, of a complex consisting of the alkyloxocarbonium cation and the anion SbF.sub.6.sup.-, PA1 (c) conversion of the complex into acid fluoride, PA1 (d) separation of the acid fluoride, and PA1 (e) recovery of the superacidic catalyst system. The process is applicable to the manufacture of methylmethacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.