公开(公告)号：US06387838B2

公开(公告)日：2002-05-14

申请号：US09772592

申请日：2001-01-30

Applicant: Eugene Y. Chen ,  Gordon R. Roof ,  William J. Kruper, Jr. ,  David J. Schwartz ,  Joey W. Storer

Inventor： Eugene Y. Chen ,  Gordon R. Roof ,  William J. Kruper, Jr. ,  David J. Schwartz ,  Joey W. Storer

IPC: B01J3100

CPC classification number: C07F5/066 ,  C07F7/10 ,  C07F17/00 ,  C08F10/00 ,  C08F110/06 ,  C08F210/16 ,  C08F4/61912 ,  C08F210/14 ,  C08F2500/12 ,  C08F4/65927 ,  C08F4/6592 ,  C08F4/65912

Abstract: Compositions comprising: A) an aluminum compound corresponding to the formula AlArf3, where Arf is a fluorinated aromatic hydrocarbyl moiety of from 6 to 30 carbon atoms; B) an aluminum compound corresponding to the formula: AlArfQ1Q2, or a dimer, adduct, or mixture thereof; where: Arf is as previously defined; Q1 is Arf or a C1-20 hydrocarbyl group, optionally substituted with one or more cyclohydrocarbyl, hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, hydrocarbylsilyl, silylhydrocarbyl, di(hydrocarbylsilyl)amino, hydrocarbylamino, di(hydrocarbyl)amino, di(hydrocarbyl)phosphino, or hydrocarbylsulfido groups having from 1 to 20 atoms other than hydrogen, or, further optionally, such substituents may be covalently linked with each other to form one or more fused rings or ring systems; and Q2 is an aryloxy, arylsulfide or di(hydrocarbyl)amido group, optionally substituted with one or more hydrocarbyl, cyclohydrocarbyl, hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, hydrocarbylsilyl, silylhydrocarbyl, di(hydrocarbylsilyl)amino, hydrocarbylamino, di(hydrocarbyl)amino, di(hydrocarbyl)phosphino, or hydrocarbylsulfido groups having from 1 to 20 atoms other than hydrogen, or, further optionally such substituents may be covalently linked with each other to form one or more fused rings or ring systems, said Q2 having from 3 to 20 atoms other than hydrogen; and the molar ratio of A):B) in the composition being from 0.1:1 to 10:1 are useful as activators for olefin polymerizations.

Abstract translation: 组合物，其包含：A）对应于式AlArf 3的铝化合物，其中Arf为6至30个碳原子的氟化芳族烃基部分; B）对应于式AlArfQ1Q2的铝化合物或其二聚物，加合物或其混合物 ; 其中：Arf如前所定义; Q 1是Arf或C 1-20烃基，任选被一个或多个环烃基，烃氧基，烃基甲硅烷氧基，烃基甲硅烷基氨基，烃基甲硅烷基，甲硅烷基烃基，二（烃基甲硅烷基）氨基，烃基氨基，二（烃基）氨基 ，二（烃基）膦基或具有除氢以外的1至20个原子的烃基硫基，或者进一步任选地，这些取代基可彼此共价连接以形成一个或多个稠环或环系; 环烷氧基，烃基甲硅烷氧基，烃基甲硅烷基氨基，烃基甲硅烷氧基，烃基甲硅烷基氨基，烃基甲硅烷基，甲硅烷基烃基，二（烃基甲硅烷基）氨基，烃基氨基，二（烃基）氨基，二（烃基）氨基， 烃基）膦基或具有除氢之外的1至20个原子的烃基硫基，或者进一步任选地，这些取代基可以彼此共价连接以形成一个或多个稠环或环系，所述Q2具有3至20个原子的其它 比氢; 并且组分中A）：B）的摩尔比为0.1:1至10:1可用作烯烃聚合的活化剂。

公开(公告)号：US06380127B1

公开(公告)日：2002-04-30

申请号：US09423450

申请日：2000-01-05

Applicant: Yasuhiro Aoyama ,  Takehisa Dewa ,  Tomoya Sawaki

Inventor： Yasuhiro Aoyama ,  Takehisa Dewa ,  Tomoya Sawaki

IPC: B01J3100

CPC classification number: B01J31/0214 ,  B01J31/02 ,  B01J2231/326 ,  Y10S502/513

Abstract: A novel metal composite is provided which is useful as a catalyst or the like by the control of a structure of an apohost and the modification thereof and in which an organic apohost capable of forming a porous structure by a hydrogen bond is compounded with at least one type of transition metallic elements or compounds thereof.

Abstract translation: 提供了一种新颖的金属复合材料，其可以通过控制末梢结构的结构及其修饰而用作催化剂等，并且其中能够通过氢键形成多孔结构的有机载脂蛋白复合物与至少一种 过渡金属元素或其化合物的类型。

公开(公告)号：US06380122B1

公开(公告)日：2002-04-30

申请号：US09620046

申请日：2000-07-19

Applicant: Matthew C. Kuchta ,  Udo M. Stehling ,  Robert T. Li ,  William T. Haygood, Jr. ,  Terry J. Burkhardt

Inventor： Matthew C. Kuchta ,  Udo M. Stehling ,  Robert T. Li ,  William T. Haygood, Jr. ,  Terry J. Burkhardt

IPC: B01J3100

CPC classification number: C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F10/00 ,  C08F110/02 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/65927 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/15 ,  C08F2500/21

Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. In one embodiment, the metallocenes of the present invention may be represented by the formula: wherein: M is a metal of Group 4, 5, or 6 of the Periodic Table; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom, or are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R5 and R6 are identical or different, are one of a hydrogen atom, a halogen atom, a C1-C10 alkyl group, which may be halogenated, a C6-C10 aryl group, which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR215, —SR15, —OR15, —OSiR315 or —PR215 radical, wherein: R15 is one of a halogen atom, a C1-C10 alkyl group or a C6-C10 aryl group; R7 is wherein: R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; M2 is carbon, silicon, germanium or tin; the radicals R3, R4, and R10 are identical or different and have the meanings stated for R5 and R6; or two adjacent R10 radicals can be joined together to form a ring system.

Abstract translation: 本发明涉及金属茂组合物及其在制备用于烯烃聚合的催化剂体系，特别是丙烯聚合中的用途。在一个实施方案中，本发明的金属茂可以由下式表示：其中：M是第4族金属， 5或6; R1和R2相同或不同，为氢原子，C1-C10烷基，C1-C10烷氧基，C6-C10芳基，C6-C10 芳氧基，C2-C40烯基，C7-C40芳基烷基，C7-C40烷基芳基，C8-C40芳基烯基或卤素原子，或是任选被一个或多个烃基取代的共轭二烯， 三（烃基）甲硅烷基或三（烃基）甲硅烷基烃基，所述二烯具有至多30个不计氢的原子; R 5和R 6相同或不同，为氢原子，卤原子，C 1 -C 10烷基 ，其可以被卤化，可以被卤化的C 6 -C 10芳基 C2-C10链烯基，C7-C40 - 芳基烷基，C7-C40烷基芳基，C8-C40芳基烯基，-NR215，-SR15，-OR15，-OSiR315或-PR215基，其中：R15 是卤素原子，C 1 -C 10烷基或C 6 -C 10芳基之一; R 7在其中：R 17至R 24如对R 1和R 2所定义，或两个或更多个相邻基团R 17至R 24，包括R 20和R 21， 与连接它们的原子一起形成一个或多个环; M 2是碳，硅，锗或锡;基团R 3，R 4和R 10相同或不同，并具有对于R 5和R 6的含义; 或两个相邻的R 10基团可以连接在一起形成环系。

公开(公告)号：US06376627B1

公开(公告)日：2002-04-23

申请号：US09619748

申请日：2000-07-19

Applicant: Terry J. Burkhardt ,  Udo M. Stehling ,  James R. Hart ,  William T. Haygood, Jr. ,  Robert T. Li ,  James C. Vizzini ,  Matthew C. Kuchta

Inventor： Terry J. Burkhardt ,  Udo M. Stehling ,  James R. Hart ,  William T. Haygood, Jr. ,  Robert T. Li ,  James C. Vizzini ,  Matthew C. Kuchta

IPC: B01J3100

CPC classification number: C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F10/00 ,  C08F110/02 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/65927 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/15 ,  C08F2500/21

Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: wherein M1 is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, an OH group or a halogen atom, or a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R3 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR′2, —SR′, —OR′, —OSiR′3 or —PR′2 radical, wherein R′ is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; R4 to R7 are identical or different and are hydrogen, as defined for R3 or two or more adjacent radicals R5 to R7 together with the atoms connecting them form one or more rings; R13 is  —B(R14)—, —Al(R14)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(R14)—, —CO—, —P(R14)—, or —P(O)(R14)—, or an amidoborane radical; wherein: R14, R15 and R16 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, a C1-C20 fluoroalkyl or silaalkyl group, a C6-C30 aryl group, a C6-C30 fluoroaryl group, a C1-C20 alkoxy group, a C2-C20 alkenyl group, a C7-C40 arylalkyl group, a C8-C40 arylalkenyl group, a C7-C40 alkylaryl group, or R14 and R15, together with the atoms binding them, form a cyclic ring; or, R13 is represented by the formula: wherein R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; M2 is one or more carbons, silicon, germanium or tin; R8, R10 and R12 are identical or different and have the meanings stated for R4 to R7; R9 and R11 are identical or different and are a Group 14 radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size.

公开(公告)号：US06376422B1

公开(公告)日：2002-04-23

申请号：US09794397

申请日：2001-02-28

Applicant: Andrew J. McNabb ,  Karen A. Lewno ,  R. Merritt Sink

Inventor： Andrew J. McNabb ,  Karen A. Lewno ,  R. Merritt Sink

IPC: B01J3100

CPC classification number: C07C45/002 ,  B01J23/002 ,  B01J23/02 ,  B01J23/06 ,  B01J23/26 ,  B01J2523/00 ,  C07C49/403 ,  B01J2523/12 ,  B01J2523/67 ,  B01J2523/23 ,  B01J2523/27

Abstract: Catalyst mixtures are comprised of zinc oxide, calcium carbonate or calcium oxide, and an amount of chromium (III) oxide in an amount sufficient to improve conversion and/or selectivity of cyclohexanol to cyclohexanone under cyclohexanol dehydrogenation conditions.

Abstract translation: 催化剂混合物由氧化锌，碳酸钙或氧化钙和一定量的氧化铬（III）组成，其用量足以在环己醇脱氢条件下改善环己醇与环己酮的转化率和/或选择性。

公开(公告)号：US06376421B2

公开(公告)日：2002-04-23

申请号：US09794526

申请日：2001-02-27

Applicant: Tao Sun ,  David R. Wilson ,  Juan M. Garces

Inventor： Tao Sun ,  David R. Wilson ,  Juan M. Garces

IPC: B01J3100

CPC classification number: C08F10/00 ,  B01J21/10 ,  B01J21/14 ,  B01J27/12 ,  B01J37/036 ,  C08F4/65912 ,  C08F4/6592 ,  C08F4/65927 ,  C08F110/06 ,  C08F210/16 ,  C08F4/65916 ,  C08F4/76 ,  C08F4/025

Abstract: Aluminum-magnesium silicate- or fluorinated magnesium silicate- aerogels which may be calcined, chemically modified, ion-exchanged, agglomerated, used as a component of a catalyst composition for an addition polymerization; supported versions thereof; and processes for polymerization are disclosed.

Abstract translation: 可以煅烧，化学改性，离子交换，附聚的铝 - 硅酸镁 - 或氟化硅酸镁 - 气凝胶，用作加成聚合的催化剂组合物的组分; 支持版本; 并且公开了聚合方法。

公开(公告)号：US06376419B1

公开(公告)日：2002-04-23

申请号：US09930265

申请日：2001-08-16

Applicant: Shu Kobayashi

Inventor： Shu Kobayashi

IPC: B01J3100

CPC classification number: C07C29/48 ,  B01J13/06 ,  B01J23/466 ,  B01J31/06 ,  B01J31/165 ,  B01J31/1805 ,  B01J31/183 ,  B01J31/2226 ,  B01J31/4038 ,  B01J2231/70 ,  B01J2531/825 ,  C07B2200/07 ,  C07C2601/14 ,  C07C2601/18 ,  Y02P20/584 ,  Y10S502/507 ,  Y10T428/249991 ,  Y10T428/249992 ,  Y10T428/249993 ,  Y10T428/256 ,  Y10T428/29 ,  Y10T428/2982 ,  Y10T428/2984 ,  Y10T428/2989 ,  Y10T428/2991 ,  Y10T428/2998 ,  C07C31/20 ,  C07C35/20 ,  C07C35/14 ,  C07C33/26

Abstract: The present invention provides an osmium oxide composition comprising an osmium oxide microencapsulated in an aromatic polyolefin (hereinafter abbreviated as MCOsOx), a method for preparation of MCOsOx, which comprises allowing an osmium oxide to contact with an aromatic polyolefin in an organic solvent, and precipitating MCOsOx, an oxidizing agent comprising MCOsOx, a method for preparing a chiral diol compound, which comprises reacting MCOsOx, a chiral ligand and an olefin compound with each other, and a method for preparing a chiral diol compound, which comprises oxidizing an olefin compound with MCOsOx, wherein a chiral ligand further coordinates to an osmium oxide.

Abstract translation: 本发明提供一种氧化锇组合物，其包含微胶囊化在芳族聚烯烃（以下简称为MCOsOx）中的氧化锇，制备MCO x O x的方法，其包括使锇氧化物与有机溶剂中的芳族聚烯烃接触， MCOsOx，包含MCO 3 O x的氧化剂，制备手性二醇化合物的方法，其包括使MCO x O x，手性配体和烯烃化合物彼此反应，以及制备手性二醇化合物的方法，其包括用烯烃化合物 MCO x O x，其中手性配体进一步与氧化锇配位。

公开(公告)号：US06376416B1

公开(公告)日：2002-04-23

申请号：US09357944

申请日：1999-07-21

Applicant: Katsumi Hirakawa ,  Yumito Uehara

Inventor： Katsumi Hirakawa ,  Yumito Uehara

IPC: B01J3100

CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/65925 ,  C08F210/16 ,  C08F4/65916 ,  C08F4/65904 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/11 ,  C08F2500/04

Abstract: The present invention provides a method of making a catalyst with the following components: Component (A): A solid catalyst component comprising the following component (A-1) and component (A-2). Component (A-1): A solid component obtained by contacting the following component (A-1-1), component (A-1-2) and component (A-1-3). Component (A-1-1): an ion-exchangeable layered silicate Component (A-1-2): a magnesium compound Component (A-1-3): a titanium compound Component (A-2): A metallocene-type transition metal compound Component (B): An organic aluminum compound

Abstract translation: 本发明提供一种制备具有下列组分的催化剂的方法：组分（A）：包含以下组分（A-1）和组分（A-2）的固体催化剂组分。组分（A-1）：固体 组分（A-1-1）：可离子交换层状硅酸盐组分（A-1-1），组分（A-1-2） -1-2）：镁化合物组分（A-1-3）：钛化合物组分（A-2）：茂金属型过渡金属化合物组分（B）：有机铝化合物

公开(公告)号：US06376413B1

公开(公告)日：2002-04-23

申请号：US09620359

申请日：2000-07-19

Applicant: Matthew C. Kuchta ,  Udo M. Stehling ,  Robert T. Li ,  William T. Haygood, Jr. ,  Terry J. Burkhardt

Inventor： Matthew C. Kuchta ,  Udo M. Stehling ,  Robert T. Li ,  William T. Haygood, Jr. ,  Terry J. Burkhardt

IPC: B01J3100

CPC classification number: C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F10/00 ,  C08F110/02 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/65927 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/15 ,  C08F2500/21

Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. In one embodiment, the metallocenes of the present invention may be represented by the formula: wherein: M is a metal of Group 4, 5, or 6 of the Periodic Table; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom, or are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R5 and R6 are identical or different, are one of a hydrogen atom, a halogen atom, a C1-C10 alkyl group, which may be halogenated, a C6-C10 aryl group, which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR215, —SR15, —OR15, —OSiR315 or —PR215 radical, wherein: R15 is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; R7 is wherein: R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; M2 is carbon, silicon, germanium or tin; the radicals R3, R4, and R10 are identical or different and have the meanings stated for R5 and R6; or two adjacent R10 radicals can be joined together to form a ring system. Alkyl refers to straight or branched chain substituents. Halogen (halogenated) refers to fluorine, chlorine, bromine or iodine atoms, preferably fluorine or chlorine. The metallocene compositions may also be represented by the formula: wherein: M1 is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C10 alkenyl group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, an OH group or a halogen atom, or are a conjugated diene which is optionally substituted with one or more hydrocaxbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl, tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R3 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR′2, —SR′, —OR′, —OSiR′3 or —PR′2 radical, wherein: R′ is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; preferably R3 is not a hydrogen atom; R13 is represented by the formula: wherein: R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; preferably, R17 to R24 are hydrogen; M2 is carbon, silicon, germanium or tin, preferably silicon; and R8, R9, R10, R11 and R12 are identical or different and have the meanings stated for R4 to R7.

公开(公告)号：US06376408B1

公开(公告)日：2002-04-23

申请号：US09619759

申请日：2000-07-19

Applicant: Terry J. Burkhardt ,  Udo M. Stehling ,  James R. Hart ,  William T. Haygood, Jr. ,  Robert T. Li ,  James C. Vizzini ,  Matthew C. Kuchta

Inventor： Terry J. Burkhardt ,  Udo M. Stehling ,  James R. Hart ,  William T. Haygood, Jr. ,  Robert T. Li ,  James C. Vizzini ,  Matthew C. Kuchta

IPC: B01J3100

CPC classification number: C07F17/00 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F10/00 ,  C08F110/02 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  Y10S526/943 ,  C08F4/65927 ,  C08F2500/12 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/15 ,  C08F2500/21

Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: wherein M1 is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, an OH group or a halogen atom, or a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R3 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR′2, —SR′, —OSiR′3 or —PR′2 radical, wherein R′ is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; R4 to R7 are identical or different and are hydrogen, as defined for R3 or two or more adjacent radicals R5 to R7 together with the atoms connecting them form one or more rings; R13 is  —B(R14)—, —Al(R14)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(R14)—, —CO—, —P(R14)—, or —P(O)(R14)—, or an amidoborane radical;  wherein: R14, R15and R16 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, a C1-C20 fluoroalkyl or silaalkyl group, a C6-C30 aryl group, a C6-C30 fluoroaryl group, C1-C20 alkoxy group, a C2-C20 alkenyl group, a C7-C40 arylalkyl group, a C8-C40 arylalkenyl group, a C7-C40 alkylaryl group, or R14 and R15, together with the atoms binding them, form a cyclic ring; or, R13 is represented by the formula: wherein R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; M2 is one or more carbons, silicon, germanium or tin; R8, R10 and R12 are identical or different and have the meanings stated for R4 to R7; R9 and R11 are identical or different and are a Group 14 radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size.