TRANSITION METAL COMPLEXES, CATALYST FOR OLEFIN POLYMERIZATION, AND PROCESS FOR PRODUCING OLEFIN POLYMERS

摘要

A transition metal complex represented by the formula Ä1Ü wherein M is a transition metal atom of the group 4 of the periodic table of elements; Cp is a group having a cyclopentadiene type anionic skeleton; A and G are each a divalent residue containing an atom of the group 15 or 16 of the periodic table of elements and may be the same with or different from each other; X<1>, X<2>, R<1>, R<2>, R<3> and R<4> are each independently a hydrogen atom, halogen atom, alkyl group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, aralkyl group with the number of carbon atoms of 7-20 optionally substituted with at least one halogen atom, aryl group with the number of carbon atoms of 6-20 optionally substituted with at least one halogen atom, substituted silyl group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, alkoxy group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, aralkyloxy group with the number of carbon atoms of 7-20 optionally substituted with at least one halogen atom, aryloxy group with the number of carbon atoms of 6-20 optionally substituted with at least one halogen atom or a di-substituted amino group with the number of carbon atoms of 2-20, provided that R<1>, R<2>, R<3> and R<4> may optionally combine with each other to form a ring; L is a Lewis base and w is an integer of 0-2, an olefin polymerization catalyst and a process for producing olefin polymers which uses the catalyst.