Catalyst system
AssigneeLucite International UK Limited
InventorsGraham Eastham, Neil Tindale
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Abstract
The present invention provides a catalyst system capable of catalyzing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining: a) a metal of Group VIB or Group VIIIB or a compound thereof, b) a bidentate phosphine, arsine or stibine ligand, and c) an acid, wherein the ligand is present in at least a 2:1 molar excess compared to the metal or the metal in the metal compound, and that the acid is present in at least a 2:1 molar excess compared to the ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system.
Claims22
A process for the carbonylation of an ethylenically unsaturated compound comprising contacting ethene with carbon monoxide and a hydroxyl group containing compound in the presence of a catalyst system, which system is obtained by combining:
- a) palladium or a compound thereof,
- b) a bidentate phosphine, arsine, or stibine ligand, and
- c) an acid,
- wherein said ligand is present in at least a 2:1 molar excess compared to said palladium metal or said palladium metal in said metal compound, and said acid is present in at least a 2:1 molar excess compared to said ligand.
Dependencies are inferred from the claim text.