A polymerisation catalyst comprising (1) a transition metal compound of Formula (A), and optionally (2) an activator, wherein Z is 5-membered heterocyclic containing carbon, nitrogen and at least one other selected from nitrogen, sulphur and oxygen, the remaining atoms in the ring being nitrogen and carbon; M is a metal from Group 3 to 11 or a lanthanide metal; E1 and E2 are divalent hydrocarbon, heterocyclic or heterosubstituted derivatives of these; D1 and D2 are donor atoms or groups; X is an anionic group, L is a neutral donor group; n=m=zero or 1; y and z are zero or integers so that X and L satisfy the valency/oxidation state of M, characterized in that the complex contains at least one polymerisable olefinic double bond which is present in, or substituent to, at least one of the atoms, groups or ligands represented by Z, E, D and L. The catalyst binds to the forming polymer providing product with good particle morphology.
一种聚合催化剂,包括(1)式(A)的过渡
金属化合物,和可选的(2)活化剂,其中Z是含有碳、氮和至少一种来自氮、
硫和氧的其他元素的五元杂环,环中其余原子为氮和碳;M为3至11组的
金属或
镧系
金属;E1和E2是二价的碳氢化合物、杂环或这些的杂代衍
生物;D1和D2是给体原子或基团;X是一个阴离子基团,L是一个中性给体基团;n=m=零或1;y和z为零或整数,使得X和L满足M的价/氧化状态,其特征在于该复合物至少含有一个可聚合的烯烃双键,该双键存在于Z、E、D和L所代表的原子、基团或
配体中的至少一个上或其取代物中。该催化剂与正在形成的聚合物结合,提供具有良好颗粒形态的产物。