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    • 23. 发明授权
    • Ethylene copolymerization process
    • 乙烯共聚方法
    • US06486278B1
    • 2002-11-26
    • US09251819
    • 1999-02-17
    • Rinaldo S. SchiffinoDonna J. Crowther
    • Rinaldo S. SchiffinoDonna J. Crowther
    • C08F442
    • C08F210/18C08F4/65908C08F4/65912Y10S526/943C08F2/06C08F4/65927C08F210/06C08F236/20C08F2500/25C08F2500/08C08F2500/04C08F2500/03
    • This invention is a solution process for the preparation of ethylene-&agr;-olefin-diolefin copolymers comprising contacting ethylene, one or more &agr;-olefin monomer, and one or more cyclic diene monomer, with a catalyst composition comprising a bridged, bis(cyclopentadienyl) zirconium compound having an unsubstituted cyclopentadienyl ligand, a multiply substituted cyclopentadienyl ligand, said ligands bridged by a covalent bridging group containing one or more Group 14 element, and two uninegative, activation reactive ligands and a catalyst activator compound. The invention process exhibits high catalyst activity, high comonomer incorporation and high diene monomer conversion rates and is particularly suitable for the preparation of elastomeric ethylene-propylene or ethylene-propylene-diene monomer elastomers.
    • 本发明是用于制备乙烯-α-烯烃 - 二烯烃共聚物的溶液方法,包括使乙烯,一种或多种α-烯烃单体和一种或多种环状二烯单体与催化剂组合物接触,所述催化剂组合物包含桥连的双(环戊二烯基) 具有未取代的环戊二烯基配体的锆化合物,多取代的环戊二烯基配体,所述配体由含有一个或多个第14族元素的共价桥连基团桥连,以及两个非负号活化反应性配体和催化剂活化剂化合物。 本发明方法表现出高催化剂活性,高共聚单体掺入和高二烯单体转化率,特别适用于制备弹性体乙烯 - 丙烯或乙烯 - 丙烯 - 二烯单体弹性体。
    • 24. 发明授权
    • Olefin copolymerization process with bridged hafnocenes
    • 烯烃共聚方法与桥连氢键
    • US06300433B1
    • 2001-10-09
    • US09422533
    • 1999-10-21
    • George RodriguezDonna J. Crowther
    • George RodriguezDonna J. Crowther
    • C08F452
    • C08F10/00C07F17/00C08F4/65908C08F10/02C08F110/02C08F210/16C08F4/65927C08F210/14C08F2/06C08F2500/03C08F2500/04C08F2500/12C08F2500/08
    • The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers can be prepared with high molecular weights and catalyst activities. More specifically, the invention is a polymerization process for ethylene copolymers having a melt index of about 0.850 to about 0.930 comprising contacting, under homogeneous polymerization conditions at a reaction temperature at or above 60° C. to 250° C., ethylene and one or more comonomers capable of insertion polymerization with a bridged hafnocene catalyst complex derived from A) a biscyclopentadienyl hafnium organometallic compound having i) at least one unsubstituted cyclopentadienyl ligand or aromatic fused-ring substituted cyclopentadienyl ligand, ii) one aromatic fused-ring substituted cyclopentadienyl ligand, iii) and a covalent bridge connecting the two cyclopentadienyl ligands, said bridge comprising a single carbon or silicon atom with two aryl groups, each substituted with a C1-C20 hydrocarbyl or hydrocarbylsilyl group at least one of which is a linear C3 or greater substitutent; and B) an activating cocatalyst.
    • 本发明涉及使用在高温烯烃聚合方法中出人意料地稳定的桥联茂茂催化剂络合物的烯烃聚合方法,使得可以以高分子量和催化剂活性制备烯烃共聚物。 更具体地,本发明是一种熔体指数为约0.850至约0.930的乙烯共聚物的聚合方法,其包括在均相聚合条件下在等于或高于60℃至250℃的反应温度下接触乙烯和一种或 能够与来自A)双环戊二烯基铪有机金属化合物的桥连的茂金属催化剂络合物进行插入聚合的更多共聚单体,其具有i)至少一个未取代的环戊二烯基配体或芳族稠环取代的环戊二烯基配体,ii)一个芳族稠环取代的环戊二烯基配体, iii)和连接两个环戊二烯基配体的共价桥,所述桥包含单个碳或硅原子与两个芳基,每个被C1-C20烃基或烃基甲硅烷基取代,其中至少一个是直链C3或更大的取代基; 和B)活化助催化剂。
    • 30. 发明授权
    • High vinyl terminated propylene based oligomers
    • 高乙烯基封端的丙烯基低聚物
    • US08372930B2
    • 2013-02-12
    • US12143663
    • 2008-06-20
    • Patrick BrantDonna J. CrowtherAndrew G. Narvaez, Jr.
    • Patrick BrantDonna J. CrowtherAndrew G. Narvaez, Jr.
    • C08F110/06C08F210/06C08F210/16C08F210/18
    • C08F210/06C08F210/16C08F2500/20C08F2500/02
    • This invention relates to a co-oligomer having an Mn of 300 to 30,000 g/mol comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the oligomer has at least X % allyl chain ends, where: 1) X=(−0.94 (mole % ethylene incorporated)+100), when 10 to 60 mole % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mole % ethylene is present in the co-oligomer, and 3) X=(1.83*(mole % ethylene incorporated)−83), when 70 to 90 mole % ethylene is present in the co-oligomer. This invention also relates to a homo-oligomer, comprising propylene, wherein the oligomer has: at least 93% allyl chain ends, an Mn of about 500 to about 20,000 g/mol, an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.2:1.0, and less than 100 ppm aluminum. This invention also relates to a process of making homo-oligomer, comprising propylene, wherein the productivity is greater than 4500 g/mmol Hf (or Zr)/hour.
    • 本发明涉及Mn为300〜30,000g / mol,包含10-90mol%丙烯和10-90mol%乙烯的共低聚物,其中低聚物具有至少X%的烯丙基链末端,其中:1) 当共聚低聚物中存在10至60摩尔%的乙烯时,X =( - 0.94(摩尔%乙烯掺入)+100),和2)X = 45,当大于60且小于70摩尔%时存在乙烯 在共低聚物中,3)X =(1.83 *(摩尔%乙烯掺入)-83),当共聚低聚物中存在70至90摩尔%的乙烯时。 本发明还涉及包含丙烯的均聚物,其中低聚物具有:至少93%的烯丙基链端,约500至约20,000g / mol的Mn,异丁基链端至烯丙基乙烯基的比例为0.8: 1至1.2:1.0和小于100ppm的铝。 本发明还涉及制备包含丙烯的均聚物的方法,其中生产率大于4500g / mmol Hf(或Zr)/小时。