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61. 发明授权

US06486278B1 Ethylene copolymerization process 失效
标题翻译：乙烯共聚方法
公开(公告)号：US06486278B1
公开(公告)日：2002-11-26
申请号：US09251819
申请日：1999-02-17
申请人： Rinaldo S. Schiffino , Donna J. Crowther
发明人： Rinaldo S. Schiffino , Donna J. Crowther
IPC分类号： C08F442
CPC分类号： C08F210/18 , C08F4/65908 , C08F4/65912 , Y10S526/943 , C08F2/06 , C08F4/65927 , C08F210/06 , C08F236/20 , C08F2500/25 , C08F2500/08 , C08F2500/04 , C08F2500/03
摘要： 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.
摘要翻译：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。

62. 发明授权

US06300433B1 Olefin copolymerization process with bridged hafnocenes 有权
标题翻译：烯烃共聚方法与桥连氢键
公开(公告)号：US06300433B1
公开(公告)日：2001-10-09
申请号：US09422533
申请日：1999-10-21
申请人： George Rodriguez , Donna J. Crowther
发明人： George Rodriguez , Donna J. Crowther
IPC分类号： C08F452
CPC分类号： C08F10/00 , C07F17/00 , C08F4/65908 , C08F10/02 , C08F110/02 , C08F210/16 , C08F4/65927 , C08F210/14 , C08F2/06 , C08F2500/03 , C08F2500/04 , C08F2500/12 , C08F2500/08
摘要： 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.
摘要翻译：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。

63. 发明授权

US06291609B1 High temperature olefin polymerization process 有权
标题翻译：高温烯烃聚合工艺
公开(公告)号：US06291609B1
公开(公告)日：2001-09-18
申请号：US09261637
申请日：1999-03-03
申请人： Donna J. Crowther , Bernard J. Folie , John F. Walzer, Jr. , Rinaldo S. Schiffino
发明人： Donna J. Crowther , Bernard J. Folie , John F. Walzer, Jr. , Rinaldo S. Schiffino
IPC分类号： C08F442
CPC分类号： C08F10/00 , C08F4/65908 , C08F4/65912 , C08F4/65927 , C08F210/06 , C08F210/16 , C08F210/18 , C08L23/142 , C08L23/16 , C08L2205/025 , C08L2308/00 , C08L2312/00 , C08L2314/06 , Y10S526/916 , Y10S526/943 , C08F2/06 , C08F4/6592 , C08F2/001 , C08L2666/04 , C08F2500/17 , C08F2500/03 , C08F2500/08 , C08F2500/15 , C08F2500/21 , C08F2500/04 , C08F2500/20 , C08F210/14 , C08F2500/12 , C08F2500/25 , C08F236/20
摘要： The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes comprising highly substituted noncoordinating anions that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers having significant amount of incorporated comonomer can be prepared with high molecular weights. More specifically, the invention is a polymerization process for ethylene copolymers having a melt index of about 0.87 to about 0.930 comprising contacting, under homogeneous polymerization conditions at a reaction temperature at or above 140° C. to 225° 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; and B) an activating cocatalyst, precursor ionic compound comprising a halogenated tetraaryl-substituted Group 13 anion wherein each aryl substituent contains at least two cyclic aromatic rings.
摘要翻译：本发明涉及使用包含高度取代的非配位阴离子的桥联茂金属催化剂络合物的烯烃聚合方法，其在高温烯烃聚合方法中令人惊奇地稳定，使得可以以高分子量制备具有显着量的掺入共聚单体的烯烃共聚物。更具体地，本发明是一种熔体指数为约0.87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140℃至225℃或更高的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; 和B）活化助催化剂，包含卤化四芳基取代的第13族阴离子的前体离子化合物，其中每个芳基取代基含有至少两个环状芳环。

64. 发明授权

US08431661B2 Polyethylene and process for production thereof 失效
标题翻译：聚乙烯及其生产方法
公开(公告)号：US08431661B2
公开(公告)日：2013-04-30
申请号：US12909412
申请日：2010-10-21
申请人： Donna J. Crowther , David M. Fiscus
发明人： Donna J. Crowther , David M. Fiscus
IPC分类号： C08F4/642 , C08F4/6592 , C08F210/02
CPC分类号： C08F210/16 , C08F4/65916 , C08F4/65925 , C08F210/14 , C08F2500/03 , C08F2500/08 , C08F2500/10 , C08F2500/12 , C08F2500/20 , C08F2500/26 , C08F4/65912
摘要： This invention relates to a process for polymerizing olefins in which the amount of trimethylaluminum in a methylalumoxane solution is adjusted to be from 6 to 25 mole %, prior to use as an activator, where the mole % trimethylaluminum is determined by 1H NMR of the solution prior to combination with any support. This invention also relates to a process for polymerizing olefins in which the amount of an unknown species present in a methylalumoxane solution is adjusted to be from 0.10 to 0.65 integration units prior to use as an activator, where the unknown species is the peak is identified in the 1H NMR spectra of the solution performed prior to combination with any support. Preferably, the methylalumoxane solution is present in a catalyst system also comprising a metallocene transition metal compound.
摘要翻译：本发明涉及一种聚合烯烃的方法，其中在用作活化剂之前，将甲基铝氧烷溶液中的三甲基铝的量调节至6至25摩尔％，其中通过溶液的1 H NMR确定摩尔％的三甲基铝在与任何支持组合之前。本发明还涉及一种使烯烃聚合的方法，其中将甲基铝氧烷溶液中存在的未知物质的量调节为使用前的0.10至0.65个整合单元作为活化剂，其中未知物质是峰值在与任何载体组合之前进行的溶液的1 H NMR光谱。优选地，甲基铝氧烷溶液存在于还包含茂金属过渡金属化合物的催化剂体系中。

65. 发明申请

US20100298510A1 Catalyst System and Process for Olefin Polymerization 有权
标题翻译：催化剂体系和烯烃聚合方法
公开(公告)号：US20100298510A1
公开(公告)日：2010-11-25
申请号：US12849351
申请日：2010-08-03
申请人： Donna J. Crowther , Peijun Jiang , George Rodriguez
发明人： Donna J. Crowther , Peijun Jiang , George Rodriguez
IPC分类号： C08F4/58 , C08F4/42
CPC分类号： C08F210/06 , B01J31/0239 , B01J31/146 , B01J31/1616 , B01J31/2295 , B01J2231/122 , B01J2531/48 , B01J2531/49 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F10/06 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F4/65908 , C08F2500/08 , C08F2500/20 , C08F2500/03 , C08F2500/17
摘要： The present application relates to a new catalyst system for the polymerization of olefins, comprising a new ionic activator having the formula: [R1R2R3AH]+ [Y]−, wherein [Y]− is a non-coordinating anion (NCA), A is nitrogen or phosphorus, R1 and R2 are hydrocarbyl groups or heteroatom-containing hydrocarbyl groups and together form a first, 3- to 10-membered non-aromatic ring with A, wherein any number of adjacent ring members may optionally be members of at least one second, aromatic or aliphatic ring or aliphatic and/or aromatic ring system of two or more rings, wherein said at least one second ring or ring system is fused to said first ring, and wherein any atom of the first and/or at least one second ring or ring system is a carbon atom or a heteroatom and may be substituted independently by one or more substituents selected from the group consisting of a hydrogen atom, halogen atom, C1 to C10 alkyl, C5 to C15 aryl, C6 to C25 arylalkyl, and C6 to C25 alkylaryl, and R3 is a hydrogen atom or C1 to C10 alkyl, or R3 is a C1 to C10 alkylene group that connects to said first ring and/or to said at least one second ring or ring system. The present application also relates to a process for the polymerization of olefins, preferably propylene, using this and other catalyst systems, as well as to polymers made by said process.
摘要翻译：本申请涉及用于烯烃聚合的新型催化剂体系，其包含具有下式的新的离子活化剂：[R 1 R 2 R 3 AH] + [Y] - ，其中[Y] - 是非配位阴离子（NCA），A是氮或磷，R 1和R 2是烃基或含杂原子的烃基，并且与A一起形成第一个3至10元非芳族环，其中任何数量的相邻环成员可以任选地是至少一个第二个是两个或更多个环的芳族或脂族环或脂族和/或芳族环系，其中所述至少一个第二环或环系与所述第一环稠合，并且其中第一和/或至少一个第二环或环系是碳原子或杂原子，并且可以被一个或多个选自氢原子，卤素原子，C 1至C 10烷基，C 5至C 15芳基，C 6至C 25芳烷基，和C 6至C 25烷基芳基，R 3是氢原子或C1至C10烷基，或R3是连接到所述第一环和/或所述至少一个第二环或环系统的C1至C10亚烷基。本申请还涉及使用这种和其它催化剂体系以及通过所述方法制备的聚合物来聚合烯烃，优选丙烯的方法。

66. 发明申请

US20100093954A1 POLYMERIZATION PROCESS 有权
标题翻译：聚合工艺
公开(公告)号：US20100093954A1
公开(公告)日：2010-04-15
申请号：US12637349
申请日：2009-12-14
申请人： Donna J. Crowther , John Francis Szul
发明人： Donna J. Crowther , John Francis Szul
IPC分类号： C08F4/76
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65927 , C08F210/16 , Y10S526/943 , C08F4/65904 , C08F210/08 , C08F2500/12
摘要： The invention relates to a polymerization process, the polymerization process includes contacting a cyclic bridged metallocene catalyst represented by the following formula: LA(A)LBMQn wherein A is a divalent group bound to each of LA and LB; each of LA and LB are bound to M, and each Q is bound to M; LA and LB are independently selected from the group consisting of cyclopentadienyl ligands and substituted cyclopentadienyl ligands; A is a divalent bridging group comprising a heterocyclic ring comprising from 3 to 6 carbon atoms and one silyl, thus forming a 4 to 7 member divalent ring; M is a Group 4, 5, or 6 transition metal; Q is independently a halogen, a hydride, or a hydrocarbyl radical having from 1 to 20 carbon atoms; wherein n is 1 or 2; with an activator, and optionally a support, to form an activated catalyst and, subsequently, contacting the activated catalyst with ethylene and optionally, at least one C3-C8 alpha olefin comonomer.
摘要翻译：本发明涉及聚合方法，聚合方法包括使由下式表示的环状桥连金属茂催化剂：LA（A）LBMQn，其中A是与LA和LB各自结合的二价基团; LA和LB各自与M结合，每个Q与M相连; LA和LB独立地选自环戊二烯基配体和取代的环戊二烯基配体; A是包含含有3至6个碳原子的杂环和1个甲硅烷基的二价桥连基，从而形成4至7元的二价环; M是第4,5或6族过渡金属; Q独立地为卤素，氢化物或具有1至20个碳原子的烃基; 其中n为1或2; 与活化剂和任选的载体形成活化的催化剂，随后使活化的催化剂与乙烯和任选的至少一种C 3 -C 8α-烯烃共聚单体接触。

67. 发明申请

US20100029873A1 Catalyst System And Process For Olefin Polymerization 有权
标题翻译：催化剂体系和烯烃聚合方法
公开(公告)号：US20100029873A1
公开(公告)日：2010-02-04
申请号：US12184713
申请日：2008-08-01
申请人： Donna J. Crowther , Peijun Jiang , George Rodriguez
发明人： Donna J. Crowther , Peijun Jiang , George Rodriguez
IPC分类号： C08F4/00 , B01J31/02 , B01J31/18 , C08F4/32
CPC分类号： C08F210/06 , B01J31/0239 , B01J31/146 , B01J31/1616 , B01J31/2295 , B01J2231/122 , B01J2531/48 , B01J2531/49 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F10/06 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F4/65908 , C08F2500/08 , C08F2500/20 , C08F2500/03 , C08F2500/17
摘要： The present application relates to a new catalyst system for the polymerization of olefins, comprising a new ionic activator having the formula: [R1R2R3AH]+ [Y]−, wherein [Y]− is a non-coordinating anion (NCA), A is nitrogen or phosphorus, R1 and R2 are hydrocarbyl groups or heteroatom-containing hydrocarbyl groups and together form a first, 3- to 10-membered non-aromatic ring with A, wherein any number of adjacent ring members may optionally be members of at least one second, aromatic or aliphatic ring or aliphatic and/or aromatic ring system of two or more rings, wherein said at least one second ring or ring system is fused to said first ring, and wherein any atom of the first and/or at least one second ring or ring system is a carbon atom or a heteroatom and may be substituted independently by one or more substituents selected from the group consisting of a hydrogen atom, halogen atom, C1 to C10 alkyl, C5 to C15 aryl, C6 to C25 arylalkyl, and C6 to C25 alkylaryl, and R3 is a hydrogen atom or C1 to C10 alkyl, or R3 is a C1 to C10 alkylene group that connects to said first ring and/or to said at least one second ring or ring system. The present application also relates to a process for the polymerization of olefins, preferably propylene, using this and other catalyst systems, as well as to polymers made by said process.
摘要翻译：本申请涉及用于烯烃聚合的新型催化剂体系，其包含具有下式的新的离子活化剂：[R 1 R 2 R 3 AH] + [Y] - ，其中[Y] - 是非配位阴离子（NCA），A是氮或磷，R 1和R 2是烃基或含杂原子的烃基，并且与A一起形成第一个3至10元非芳族环，其中任何数量的相邻环成员可以任选地是至少一个第二个是两个或更多个环的芳族或脂族环或脂族和/或芳族环系，其中所述至少一个第二环或环系与所述第一环稠合，并且其中第一和/或至少一个第二环或环系是碳原子或杂原子，并且可以被一个或多个选自氢原子，卤素原子，C 1至C 10烷基，C 5至C 15芳基，C 6至C 25芳烷基，和C 6至C 25烷基芳基，R 3是水解 n原子或C1至C10烷基，或R3是连接到所述第一环和/或所述至少一个第二环或环系的C1至C10亚烷基。本申请还涉及使用这种和其它催化剂体系以及通过所述方法制备的聚合物来聚合烯烃，优选丙烯的方法。

68. 发明授权

US06559253B2 High temperature olefin polymerization process 有权
公开(公告)号：US06559253B2
公开(公告)日：2003-05-06
申请号：US09902125
申请日：2001-07-10
申请人： Donna J. Crowther , Bernard J. Folie , John F. Walzer, Jr. , Rinaldo S. Schiffino
发明人： Donna J. Crowther , Bernard J. Folie , John F. Walzer, Jr. , Rinaldo S. Schiffino
IPC分类号： C08F442
CPC分类号： C08F10/00 , C08F4/65908 , C08F4/65912 , C08F4/65927 , C08F210/06 , C08F210/16 , C08F210/18 , C08L23/142 , C08L23/16 , C08L2205/025 , C08L2308/00 , C08L2312/00 , C08L2314/06 , Y10S526/916 , Y10S526/943 , C08F2/06 , C08F4/6592 , C08F2/001 , C08L2666/04 , C08F2500/17 , C08F2500/03 , C08F2500/08 , C08F2500/15 , C08F2500/21 , C08F2500/04 , C08F2500/20 , C08F210/14 , C08F2500/12 , C08F2500/25 , C08F236/20
摘要： The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes comprising highly substituted noncoordinating anions that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers having significant amount of incorporated comonomer can be prepared with high molecular weights. More specifically, the invention is a polymerization process for ethylene copolymers having a melt index of about 0.87 to about 0.930 comprising contacting, under homogeneous polymerization conditions at a reaction temperature at or above 140° C. to 225° 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; and B) an activating cocatalyst, precursor ionic compound comprising a halogenated tetraaryl-substituted Group 13 anion wherein each aryl substituent contains at least two cyclic aromatic rings.

69. 发明授权

US06319998B1 Method for making polymer blends by using series reactors 有权
标题翻译：使用串联反应器制备聚合物共混物的方法
公开(公告)号：US06319998B1
公开(公告)日：2001-11-20
申请号：US09260787
申请日：1999-03-01
申请人： Charles C. Cozewith , Sudhin Datta , Bruce A. Harrington , Bernard J. Folie , John F. Walzer, Jr. , Donna J. Crowther
发明人： Charles C. Cozewith , Sudhin Datta , Bruce A. Harrington , Bernard J. Folie , John F. Walzer, Jr. , Donna J. Crowther
IPC分类号： C08F206
CPC分类号： C08F10/00 , C08F4/65908 , C08F4/65912 , C08F210/16 , C08F210/18 , C08L23/0815 , C08L23/142 , C08L23/16 , C08L2205/02 , C08L2205/025 , C08L2308/00 , C08L2312/00 , C08L2314/06 , Y10S526/943 , C08F4/65927 , C08F4/6592 , C08F2/06 , C08F2/001 , C08L2666/04 , C08F210/06 , C08F2500/21 , C08F2500/17 , C08F2500/03 , C08F2500/20 , C08F2500/04 , C08F2500/25 , C08F236/20
摘要： This invention relates to a method of making polymer blends using series reactors and a metallocene catalyst. Monomers used by the invention are ethylene, a higher alpha-olefin (propylene most preferred), and optionally, a non-conjugated diene (ethylidene norbornene, i.e., ENB, most preferred). More specifically, this invention relates to making blends of EP (ethylene-propylene) copolymers in which the blend components differ in any of the following characteristics: 1) composition 2) molecular weight, and 3) crystallinity. We use the terminology EP copolymer to also include terpolymers that contain varying amounts of non-conjugated diene. Such terpolymers are commonly known as EPDM.
摘要翻译：本发明涉及使用串联反应器和茂金属催化剂制备聚合物共混物的方法。本发明使用的单体是乙烯，较高级的α-烯烃（最优选丙烯）和任选的非共轭二烯（亚乙基降冰片烯，即ENB，最优选的）。更具体地说，本发明涉及制备EP（乙烯 - 丙烯）共聚物的共混物，其中共混物组分在以下任何特征方面不同：1）组合物2）分子量和3）结晶度。我们使用术语EP共聚物也包括含有不同量的非共轭二烯的三元共聚物。这种三元共聚物通常被称为EPDM。

70. 发明授权

US5504049A Transition metal olefin polymerization catalysts 失效
标题翻译：过渡金属烯烃聚合催化剂
公开(公告)号：US5504049A
公开(公告)日：1996-04-02
申请号：US86772
申请日：1993-07-01
申请人： Donna J. Crowther , Richard A. Fisher , Jo Ann M. Canich , Gregory G. Hlatky , Howard W. Turner
发明人： Donna J. Crowther , Richard A. Fisher , Jo Ann M. Canich , Gregory G. Hlatky , Howard W. Turner
IPC分类号： C08F4/642 , B01J31/12 , B01J31/14 , B01J31/16 , B01J31/18 , B01J31/22 , C07F9/00 , C07F11/00 , C07F17/00 , C08F4/60 , C08F4/602 , C08F4/622 , C08F4/639 , C08F4/6592 , C08F4/69 , C08F4/72 , C08F4/74 , C08F10/00 , C08F10/02 , C08F4/68
CPC分类号： C08F10/00 , B01J31/122 , B01J31/146 , B01J31/1805 , B01J31/2295 , C07F11/00 , C07F11/005 , C07F17/00 , C07F9/005 , C08F10/02 , B01J2531/0227 , B01J2531/57 , B01J2531/58 , B01J2531/66 , C08F2420/04 , C08F4/639 , C08F4/63908 , C08F4/63912 , Y10S526/904
摘要： This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.
摘要翻译：本发明涉及可用作烯烃聚合催化剂的非4族过渡金属组合物，其中过渡金属处于高氧化态。本发明还涉及新的配体体系的设计及其制备和使用方法。可用作催化剂前体的组合物是包含本发明独特配体体系的中性过渡金属配合物。本发明的组合物可以通过离子交换试剂或路易斯酸活化至催化状态。

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