Process for dimerization
US4687877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/72
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the dimerization of propylene or a C.sub.4 olefin or the codimerization of ethylene with propylene or a C.sub.4 olefin comprising passing the olefin(s) in contact with a catalyst comprising (a) elemental potassium and (b) elemental copper, and (c) an alpha-alumina support therefor, wherein: PA0 (i) the potassium is present in the catalyst in an amount in the range of about 0.25 to about 30 percent by weight based on the weight of the catalyst; PA0 (ii) the ratio of copper to potassium, by weight, is in the range of about 0.1 to one to about 5 to one; and PA0 (iii) the process is carried out at a temperature in the range of about 75.degree. C. to about 225.degree. C. and at a pressure in the range of about atmospheric pressure to about 10,000 psig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.