Olefin trimerisation using a catalyst comprising a source of chromium, molybdenum or tungsten and a ligand containing at least one phosphorous, arsenic or antimony atom bound to at least one (hetero)hydrocarbyl group
AssigneeBP Chemicals Limited
InventorDuncan Frank Wass
Life of this patent
Estimating the term…
Abstract
A process for the trimerisation of olefins is disclosed, comprising contacting a monomeric olefin or mixture of olefins under trimerisation conditions with a catalyst which comprises (a) a source of chromium, molybdenum or tungsten (b) a ligand containing at least one phosphorus, arsenic or antimony atom bound to at least one hydrocarbyl or heterohydrocarbyl group having a polar substituent, but excluding the case where all such polar substituents are phosphane, arsane or stibana groups; and optionally (c) an activator.
Claims23
A catalyst comprising:
- (a) a source of chromium, molybdenum or tungsten;
- (b) a ligand containing at least one phosphorus, arsenic or antimony atom bound to at least one hydrocarbyl or heterohydrocarbyl group having a polar substituent, but excluding the case where all such polar substituents are phosphane, arsane or stibane groups;
- (c) a support;
- and optionally
- (d) an activator.
A supported catalyst having a productivity per mole of catalyst of at least 50%, of its productivity when unsupported, which catalyst comprises:
- (a) a source of a Group 3 to 10 transition metal;
- (b) a ligand containing at least one phosphorus, arsenic or antimony atom bound to at least one hydrocarbyl or heterohydrocarbyl group having a polar substituent, but excluding the case where all such polar substituents are phosphane, arsane or stibane groups;
- (c) a support;
- and optionally
- (d) an activator.
Dependencies are inferred from the claim text.