Process for the manufacture of halocarbons
US6040487A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/275
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR.sup.1 R.sup.2 CBR.sup.3 R.sup.4 (where, A, B, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR.sup.1 R.sup.2 .dbd.CR.sup.3 R.sup.4, in the presence of a catalyst system containing (i) at least one catalyst selected from monovalent and divalent copper, and (ii) a promoter selected from aromatic or aliphatic hetercyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, hydrofluorocarbons may be formed therefrom by reacting the hydrochlorofluorocarbons with HF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.