Olefin oligomerization process
US5929297A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alpha-olefin oligomers are produced by oligomering alpha-olefin monomer with a catalyst system comprising boron trifluoride, a protic promoter, and a special type of modifier. The modifier is a compound that satisfies the following criteria: (a) it has at least one moiety in which a carbonyl group is directly bonded to a nitrogen atom which is in turn bonded to two separate carbon atoms, (b) it is devoid of any nitrogen atom other than a nitrogen atom that is either (i) directly bonded to two separate carbon atoms and to a carbonyl group or (ii) is triply bonded to a single carbon atom, and (c) it is devoid of any protonic functional substituent. These modifiers control the oligomer product distribution and provide higher percentages of lower oligomers, especially dimers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.