Catalyst composition containing diphosphines having heterocyclic
申请人:Shell Oil Company
公开号:US04960747A1
公开(公告)日:1990-10-02
Diphosphines having at least one heterocyclic substituent that includes at least one oxygen, sulphur, or nitrogen atom in a five or six membered ring are useful components in palladium catalyst compositions which have been used to polymerize carbon monoxide and olefinically unsaturated compounds. Remaining substituents, if any, are carbocyclic hydrocarbon groups such as phenyls which are preferably substituted with polar groups in a ring position ortho to the phosphorus. The phosphorus atoms in the diphosphine are connected by a bridging group that contains at least one carbon atom.
Copolymerization of carbon monoxide and olefin with diphosphine having
申请人:Shell Oil Company
公开号:US04880902A1
公开(公告)日:1989-11-14
Diphosphines having at least one heterocyclic substituent that includes at least one oxygen, sulphur, or nitrogen atom in a five or six membered ring are useful components in palladium catalyst compositions which have been used to polymerize carbon monoxide and olefinically unsaturated compounds. Remaining substituents, if any, are carbocyclic hydrocarbon groups such as phenyls which are preferably substituted with polar groups in a ring position ortho to the phosphorus. The phosphorus atoms in the diphosphine are connected by a bridging group that contains at least one carbon atom.
Catalytic compositions for the polymerization of carbon monoxide with an olefin
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0305012A2
公开(公告)日:1989-03-01
Catalytic compositions comprising
(a) a palladium compound,
(b) an anion of an acid having a pKa of less than 6, and
(c) a diphosphine of the general formula R₉R₁₀P-R-PR₁₁R₁₂, wherein R₉ to R₁₂ stand for carbocyclic hydrocarbyl groups or heteroaromatic substituents and R represents a bridging group containing at least one carbon atom in the bridge, with the proviso that at least one of R₉ to R₁₂ is a heteroaromatic substituent. The heteroaromatic substituent should contain one or more O, S and/or N-atoms in a five or six-membered ring, which ring is bound to the P-atom by a carbon ring-atom.
The catalysts are active in the preparation of linear alternating polyketones.