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    • 1. 发明授权
    • Olefin polymerization catalyst
    • 烯烃聚合催化剂
    • US06214954B1
    • 2001-04-10
    • US08849835
    • 1997-06-12
    • Yu NittoTokitaka KaneshimaToshiya Aoki
    • Yu NittoTokitaka KaneshimaToshiya Aoki
    • C08F442
    • C08F10/00C08F4/65908C08F4/65912C08F4/6592Y10S526/943
    • Disclosed is an olefin polymerization catalyst comprising: a transition metal compound comprising one transition metal selected from the group consisting of Ti, Zr and Hf, and at least two ligands, wherein one ligand is a group having a cyclopentadienyl skeleton, and the remaining at least one ligand is a monovalent, bidentate, anionic chelating ligand having two coordinating atoms each coordinated to the transition metal, one of which atoms is selected from the group consisting of O, S, Se and Te, and the other of which atoms is selected from the group consisting of N, S, Se and Te, and wherein one of the remaining at least one ligand is optionally bonded to the group having a cyclopentadienyl skeleton through a bridging group. Also disclosed is a method for efficiently producing an olefin homopolymer or olefin copolymer by using this catalyst. By polymerizing an olefin using the olefin polymerization catalyst of the present invention, there can be advantageously produced an olefin homopolymer having a narrow molecular weight distribution or an olefin copolymer having not only a narrow molecular weight distribution but also a uniform copolymerization distribution. The produced polymer has high impact strength, high resistance to stress cracking, high transparency, excellent heat sealing properties at low temperatures, high blocking resistance, low tackiness, low extractability and the like.
    • 公开了一种烯烃聚合催化剂,其包括:包含一种选自Ti,Zr和Hf的过渡金属的过渡金属化合物和至少两个配体,其中一个配体是具有环戊二烯基骨架的基团,其余至少 一个配位体是具有两个与过渡金属配位的两个配位原子的单价二齿阴离子螯合配体,其中一个原子选自O,S,Se和Te,其中原子选自 由N,S,Se和Te组成的组,并且其中剩余的至少一种配体之一任选地通过桥连基团与具有环戊二烯基骨架的基团键合。 还公开了通过使用该催化剂有效地制备烯烃均聚物或烯烃共聚物的方法。 通过使用本发明的烯烃聚合催化剂聚合烯烃,可以有利地制备具有窄分子量分布的烯烃均聚物或不仅具有窄分子量分布而且具有均匀共聚分布的烯烃共聚物。 所生产的聚合物具有高冲击强度,高抗应力开裂性,高透明性,低温下的热封性优异性,耐粘连性,低粘性,低萃取性等优异性。
    • 2. 发明授权
    • Olefin polymerization method using a highly active catalyst having a
multidentate ligand
    • 使用具有多齿配体的高活性催化剂的烯烃聚合方法
    • US5817724A
    • 1998-10-06
    • US786657
    • 1997-01-21
    • Toshiya AokiTokitaka Kaneshima
    • Toshiya AokiTokitaka Kaneshima
    • C08F4/42C08F4/602C08F4/619C08F4/6192C08F4/64C08F4/659C08F4/6592C08F10/00C08F110/00C08F210/16
    • C08F10/00C08F210/16C08F2420/02C08F2420/05C08F4/6192C08F4/659C08F4/65912C08F4/6592
    • Disclosed is an olefin polymerization method using a highly active catalyst comprising a transition metal selected from metals of Groups IIIA including the lanthanide series, IVA, VA, VIA, VIIA and VIII of the Periodic Table of the Elements, and ligands L.sup.1 and L.sup.2 bonded thereto, wherein a combination of L.sup.1 and L.sup.2 is (1) a combination of ligand L.sup.1 which is a group containing at least one phosphorus-containing group and ligand L.sup.2 which is a ligand having a .sigma.-bond, or a ligand having a .sigma.-bond and a bond selected from at least one .pi.-bond and at least one lone electron pair donative bond; (2) a combination of ligand L.sup.1 which is a 5-membered heterocyclic pentadentate ligand having one or more heteroatoms and ligand L.sup.2 which is a ligand having a .sigma.-bond, or a ligand having a .sigma.-bond and a bond selected from at least one .pi.-bond and at least one lone electron pair donative bond, provided that when the pentadentate ligand contains only one heteroatom, L.sup.2 is a ligand having a .sigma.-bond, or a ligand having a .sigma.-bond and at least one lone electron pair donative bond; and (3) a combination of ligand L.sup.1 which is a trispyrazolyl tridentate ligand and ligand L.sup.2 which is an alkapolyenyl ligand, and wherein each L.sup.1 contains an element of Group VB or Group VIB. By the method of the present invention, a desired olefin polymer can be produced efficiently with a high productivity per unit by weight of the catalyst.
    • 公开了一种使用高活性催化剂的烯烃聚合方法,该催化剂包含选自元素周期表中的镧系,IVA,VA,VIA,VIIA和VIII族的IIIA族金属的过渡金属,以及与其结合的配位体L1和L2 其中L1和L2的组合是(1)配体L1,其是含有至少一个含磷基团的基团和具有σ键的配体的配体L2或具有σ型配体的配体 和选自至少一个π键和至少一个单电子对捐赠键的键; (2)配体L1,其是具有一个或多个杂原子的5元杂环五齿配体和具有σ键的配体的配体L2或具有σ-键的配体和至少选自至少 一个π键和至少一个单独的电子对供体键,条件是当五齿配体仅含有一个杂原子时,L2是具有σ-键的配体或具有σ-键和至少一个单电子对的配体 捐赠债券 和(3)作为三吡唑基三齿配体的配体L1和作为多聚烯基配体的配体L2的组合,并且其中每个L1包含VB族或VIB族元素。 通过本发明的方法,可以以每单位重量的催化剂高生产率有效地制备所需的烯烃聚合物。