Catalyst composition and process for the preparation of...

Details Catalyst composition and process for the preparation of... Catalyst composition and process for the preparation of...

C - Chemistry, Metallurgy

08

G

C08G 67/02 (2006.01)

Patent

CA 2222627

A catalyst composition which is based upon (a) a source of nickel cations, and (b) a bidentate ligand of the general formula (I): R1R2M1-R-M2R3R4 wherein M1 and M2 represent independently phosphorus, nitrogen, arsenic or antimony, R1, R2, R3 and R4 represent independently optionally substituted hydrocarbyl groups on the understanding that at least one of R1, R2, R3 and R4 represent a substituted aryl group, and R represents a bivalent bridging group of which the bridge consists of at most two bridging atoms, and a process for the preparation of copolymers of carbon monoxide and an olefinically unsaturated compound comprising contacting the monomers in the presence of the said catalyst composition.

La présente invention se rapporte à une composition de catalyseur à base (a) d'une source de cations de nickel, et (b) d'un ligand bidenté de formule générale (I): R?1¿R?2¿M?1¿-R-M?2¿R?3¿R?4¿ dans laquelle M?1¿ et M?2¿ représentent indépendamment phosphore, azote, arsenic ou antimoine; R?1¿, R?2¿, R?3¿ et R?4¿ représentent indépendamment optionnellement des groupes hydrocarbyle substitués, sous réserve qu'au moins un parmi R?1¿, R?2¿, R?3¿ et R?4¿ représente un groupe aryle substitué; et R représente un groupe de pontage bivalent dont le pont se compose au plus de deux atomes de pontage. L'invention se rapporte également à un procédé de préparation de copolymères de monoxyde de carbone et d'un composé non saturé oléfiniquement. Ledit procédé consiste à mettre en contact les monomères avec ladite composition de catalyseur.

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