Patent ID: 6677267
Filing Date: 2004-01-13
Classification: C08F,Y10S

Abstract:
Catalyst for the polymerisation of olefins comprising(1) a complex having the formula (I) wherein M is a transition metal selected from the group consisting of Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] and Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the metal; b is the valency of the atom or group X; and R1 to R7 are each independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl or SiRâ€²3 where each Râ€² is independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, or substituted heterohydrocarbyl; and when any two or more of R1 to R7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more of R1 to R7 can be linked to form one or more cyclic substituents;(2) an activator which is an alkylalumoxane; and (3) a support material, wherein the atomic ratio of aluminium in the alkylalumoxane (2) to transition metal M in complex (1) is from 6:1 to 25:1.