Vanadium-imido-phosphoraneiminato complexes for the polymerization of olefins
View Patent ↗The present invention relates to vanadium-imido-phosphoraneiminato compounds, to compositions containing vanadium-imido-phosphoraneiminato compounds, which compositions are suitable especially as catalysts for the polymerization of olefins, especially for ethylene/propylene or ethylene/α-olefin copolymerization and the terpolymerization of those monomers with dienes.
1. Vanadium-imido-phosphoraneiminato compounds, which correspond to the general formula
R—N═VCl 2 (NPR 1 R 2 R 3 ) (I)
or
R—N═VXY(NPR 1 R 2 R 3 ) (II),
wherein
R represents a C 1 -C 10 -alkyl group, a C 6 -C 14 -aryl group or a C 1 -C 10 -heteroaryl group,
wherein
X,Y are each independently of the other different or identical monoanionic ligands which may be bonded to one another and/or to the R group of the imide, or its substituents, and/or to the radicals R 1 , R 2 , R 3 of the iminophosphorane, or wherein X and/or Y is likewise an iminophosphorane having radicals R 4 , R 5 , R 6 and R 7 , R 8 , R 9
wherein
R 1 , R 2 , R 3 and, optionally, R 4 , R 5 , R 6 , R 7 , R 8 , R 9 are each independently of the others different or identical C 1 -C 10 -alkyl, C 6 -C 14 -aryl, C 1 -C 10 -alkoxy groups which may be bonded to one another and/or to the R group of the imide, or its substituents, and/or to the radicals R 1 , R 2 , R 3 of the iminophosphorane, or alternatively one or more substituents of the phosphorus are bonded to the phosphorus via heteroatoms selected from N, O, and S.
2. Vanadium-imido-phosphoraneiminato compounds according to claim 1 , wherein said compounds correspond to one of the following structures:
3. A composition comprising vanadium-imido-phosphor-aneiminato compounds and an organometallic compound of Groups 1, 2, 12 or 13 of the periodic system of the elements according to IUPAC 1985, wherein at least one hydrocarbon group in said organometallic compound is bonded directly to the metal atom via a carbon atom, wherein said vanadium-imido-phosphoraneiminato compound corresponds to the general formula
R—N═VCl 2 (NPR 1 R 2 R 3 ) (I)
or
R—N═VXY(NPR 1 R 2 R 3 ) (II),
wherein
R represents a C 1 -C 10 -alkyl group, a C 6 -C 14 -aryl group or a C 1 -C 10 -heteroaryl group,
wherein
X,Y are each independently of the other different or identical monoanionic ligands which may be bonded to one another and/or to the R group of the imide, or its substituents, and/or to the radicals R 1 , R 2 , R 3 of the iminophosphorane, or
wherein
X and/or Y is likewise an iminophosphorane having radicals R 4 , R 5 , R 6 and R 7 , R 8 , R 9 ,
wherein
R 1 , R 2 , R 3 and, optionally, R 4 , R 5 , R 6 , R 7 , R 8 , R 9 are each independently of the others different or identical C 1 -C 10 -alkyl, C 6 -C 14 -aryl, C 1 -C 10 -alkoxy groups which may be bonded to one another and/or to the R group of the imide, or its substituents, and/or to the radicals R 1 , R 2 , R 3 of the iminophosphorane, or alternatively one or more substituents of the phosphorus are bonded to the phosphorus via heteroatoms selected from N, O and S; and
an organometallic compound selected from the group consisting of aluminum, sodium, lithium, zinc and magnesium.