Vapor phase process for polymerizing carbon monoxide and...

Details Vapor phase process for polymerizing carbon monoxide and... Vapor phase process for polymerizing carbon monoxide and...

C - Chemistry, Metallurgy

08

G

402/7.1

C08G 67/02 (2006.01)

Patent

CA 1318440

63293-2810 A B S T R A C T VAPOR PHASE PROCESS FOR POLYMERIZING CARBON MONOXIDE AND OLEFINS Process for the preparation of polymers characterized in that a mixture of carbon monoxide with one or more olefinically unsaturated organic compounds is polymerized by contacting the mixture with a catalyst composition based upon a) a palladium compound, b) an anion of an acid with a pKa of less than 2, provided that the acid is not a hydrohalogenic acid, and c) a bidentate ligand of the general formula R1R2-M-R-M-R3R4, wherein M represents phosphorus, arsenic or antimony R1, R2, R3 and R4 represent hydrocarbyl groups which may or may not be substituted with polar groups and R represents a bivalent organic bridging group which contains at least two carbon atoms in the bridge in the absence of a liquid non-polymerizable diluent. The gas phase polymerization omits the separation and purification steps of the liquid phase polymerization, proceeds at higher rate and produces polymers of higher molecular weight and of higher bulk density.

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