SELF-ASSEMBLED MULTI-NUCLEAR CATALYST FOR OLEFIN POLYMERIZATION

摘要

A self-assembled olefin polymerization catalyst comprising a transition metal complex according to formula (I) A-[(L2(MXn)p(MXn-L1(MXn)q-MXn-B)r-MXn)y-(L1(MXn)t(MXn-L2(MXn)u-MXn-A')vMXn)w]z-B (I) wherein each M is independently a transition metal selected from the group consisting of Group 3-11 of the periodic table; each X is independently selected from the group consisting of H, halogen, CN, optionally substituted N(Ra)2, OH, optionally substituted C1-C20 alkyl, optionally substituted C1-C20 alkoxy, wherein Ra is independently selected from the group consisting of optionally substituted C1-C20 alkyl, optionally substituted C6-C20 aryl and halogen; A is nothing, L1(MXn)g MXn-, or MXn L1(MXn)g MXn,-; A' is nothing, - L1(MXn)g MXn, or - L1(MXn)g,; B is nothing, -L2(MXn)h or -L2(MXn)h MXn; g is 0 or an integer of at least 1; h is 0 or an integer of at least 1; p is 0 or an integer of at least 1; q is 0 or an integer of at least 1; r is 0 or an integer of at least 1; t is 0 or an integer of at least 1; u is 0 or an integer of at least 1; v is 0 or an integer of at least 1; w is an integer of at least 1; y is an integer of at least 1; z is an integer of at least 1; n is an integer selected from 0-6, wherein n is selected depending on the valency of M such that the net charge of each M nucleus is zero or all ligand binding positions of M are occupied; L1 and L2 are independently selected ligands, wherein L1 and L2 are different, each of L1 and L2 having at least two linked coordination units, wherein each coordination unit binds to a different transition metal atom.