Catalyst compositions for preparing polyketones comprising (a) a Group VIII metal compound, containing at least one ligand capable of coordinating to the Group VIII metal, and (b) a boron hydrocarbyl compound are disclosed, in particular catalyst compositions wherein the boron hydrocarbyl compound is a Lewis acid of the formula BXYZ where at least one of X, Y and Z is a monovalent hydrocarbyl group. A preferred catalyst composition comprises a palladium complex and B(C.sub.6 F.sub.5).sub.3.
This is a divisional of co-pending Application Ser. No. 08/468,930 filed on Jun. 6, 1995; which is a divisional of application Ser. No. 08/222,465 filed on Apr. 1, 1994, now U.S. Pat. No. 5,468,708.
Priority Data
Apr 06, 1993 [GB] 9307207 Nov 30, 1993 [GB] 9324583
