Patent ID: 6544919
Filing Date: 2003-04-08
Classification: C07F,C08F

Abstract:
A catalyst system comprising an organometallic complex having the structure of formula (III) wherein:B is a covalent bridging group comprising carbyl, silyl, disilyl, germanyl, ammonium, phosphonium, or a C1-C30 hydrocarbylene, substituted hydrocarbylene, heterohydrocarbylene, or substituted heterohydrocarbylene radical, optionally containing a Group IVB element, a Group VB element, or both a Group IVB element and a Group VB element, and is capable of binding up to nmax substituents through single covalent bonds, wherein nmax is at least 4;R and Râ€² are independently selected from the group consisting of halogen, C1-C24 hydrocarbyl, C1-C24 hydrocarbyl substituted with one or more halogen atoms, and C1-C24 hydrocarbyl-substituted Group IVB elements; x is 0, 1, 2, 3, or 4, and y is 0, 1, 2, 3, or 4, with the proviso that the sum of x and y cannot exceed 4, or, when R and Râ€² are ortho to each other and x and y are each 1 or greater, R and Râ€² can together form a five- or six-membered cyclic structure optionally substituted with one to four substituents selected from the group consisting of halogen, C1-C24 hydrocarbyl, C1-C24 hydrocarbyl substituted with one or more halogen atoms, and C1-C24 hydrocarbyl-substituted Group IVB elements, q is an optional double bond, and X is N, O, S, or P, with the provisos that (a) when X is N or P, then either n is 1 or q is present as a double bond, but not both, and (b) when X is O or S, then n is zero and q is absent; R1, R6, and R7 are independently hydrido, hydrocarbyl or substituted hydrocarbyl, and R2 and R5 are independently hydrido, halo, hydrocarbyl, or substituted hydrocarbyl or R1 and R2 and/or R5 and R6 may be taken together to form a linkage â€”Q*â€”, resulting in a five- or six-membered ring, wherein Q* is â€”[(CR*)a*(Z)b*]â€” in which a* is 2, 3, or 4, Z is N, O, or S, b* is zero, 1, or 2, the sum of a* and b* is 3 or 4, and R* is selected from the group consisting of hydrido, halo, hydrocarbyl, hydrocarbyloxy, trialkylsilyl, (NR8)2, OR9, and NO2, wherein R8 and R9 are each independently hydrocarbyl, or wherein R* moieties on adjacent carbon atoms may be linked to form an additional five- or six-membered ring, or R2 and R5 may together form a linkage â€”Q*â€” as just defined; R3 and R4 are independently selected from the group consisting of hydrido and hydrocarbyl; k, l, m, and n are independently zero or 1; Q1, Q2, Q3, and Q4 are independently selected from the group consisting of univalent radicals; Q5 is an optional ligand having the structure of formula (I) wherein:q, X, R1, R2, R3, R5, R4, R6, R7, l, m, and n are as defined above; M1 is a transition metal; M2 is a Group IIIA element, a Group IVA element, a Group VA element, a lanthanide, or an actinide; Q is J(Rx)zâˆ’2, wherein J is an element with a coordination number of three from Group VB or an element with a coordination number of two from Group VIB, Rx is selected from the group consisting of hydrogen, C1-C24 hydrocarbyl, C1-C24 hydrocarbyl substituted with one or more halogen atoms, and C1-C24 alkoxy, and z is the coordination number of J, and further wherein Q substituents on different L groups are linked through a C1-C24 hydrocarbylene bridge; a is at least 1, b is 0, 1, or 2, and the sum of a and b is 2 or 3; and a catalyst activator effective to produce a catalytically active ionic species when combined with said complex.