Olefin polymerization catalyst having a multidenta

专利名称：Olefin polymerization catalyst having a

multidentate ligand

发明人：Aoki, Toshiya,Kaneshima, Tokitaka申请号：EP94200736.0申请日：19940322公开号：EP0617052B1公开日：19980603

摘要：Disclosed is an olefin polymerization catalyst comprising a transition metalselected from metals of Groups IIIA including the lanthanide series, IVA, VA, VIA, VIIA andVIII of the Periodic Table of the Elements, and ligands L¹ and L² bonded thereto, whereina combination of L¹ and L² is (1) a combination of ligand L¹ which is a group containing atleast one phosphorus-containing group and ligand L² which is a ligand having a σ-bond, ora ligand having a σ-bond and a bond selected from at least one π-bond and at least onelone electron pair donative bond; (2) a combination of ligand L¹ which is a 5-memberedheterocyclic pentadentate ligand having one or more heteroatoms and ligand L² which isa ligand having a σ-bond, or a ligand having a σ-bond and a bond selected from at leastone π-bond and at least one lone electron pair donative bond, provided that when thepentadentate ligand contains only one heteroatom, L² is a ligand having a σ-bond, or aligand having a σ-bond and at least one lone electron pair donative bond; and (3) acombination of ligand L¹ which is a trispyrazolyl tridentate ligand and ligand L² which is analkapolyenyl ligand, and wherein each L¹ contains an element of Group VB or Group VIB.The catalyst of the present invention has extremely high catalytic activity for an olefinpolymerization reaction as compared to conventional olefin polymerization catalysts.

申请人：ASAHI CHEMICAL IND

地址：JP

国籍：JP

代理机构：Smulders, Theodorus A.H.J., Ir.

更多信息请下载全文后查看