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    Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure
    1.
    发明授权
    Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure 失效
    具有主要间同立构结构的结晶乙烯基芳族聚合物的制备方法

    公开(公告)号：US5728784A

    公开(公告)日：1998-03-17

    申请号：US757251

    申请日：1996-11-27

    申请人： Riccardo Po' ,  Nicoletta Cardi ,  Roberto Santi

    发明人： Riccardo Po' ,  Nicoletta Cardi ,  Roberto Santi

    IPC分类号： C08F2/02 ,  C08F2/04 ,  C08F2/06 ,  C08F4/642 ,  C08F4/646 ,  C08F4/659 ,  C08F4/6592 ,  C08F4/80 ,  C08F12/00 ,  C08F12/04

    CPC分类号： C08F12/08 ,  C08F2410/01 ,  C08F2410/03 ,  C08F4/65912

    摘要： Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing vinylaromatic monomers, alone or mixed with at least one other monomer, in the presence of a catalytic system essentially consisting of: a) a complex of titanium or zirconium selected from those having general formula: MR.sub.1 R.sub.2 R.sub.3 R.sub.4, A.sub.1 MR.sub.1 R.sub.2 R.sub.3, A.sub.1 A.sub.2 MR.sub.1 R.sub.2 (I) b) a co-catalyst selected from an alkylalumoxane and a compound of boron having formula (II): BX.sub.1 X.sub.2 X.sub.3 (II) or one of its salts; c) a derivative of tin having general formula: SnR.sub.5 R.sub.6 R.sub.7 R.sub.8 (III)

    摘要翻译： 制备具有主要间同立构结构的结晶乙烯基芳族聚合物的方法，其包括在催化体系存在下单独或与至少一种其它单体混合的乙烯基芳族单体聚合，所述催化体系基本上由以下组成：a）选自 具有通式：MR1R2R3R4，A1MR1R2R3，A1A2MR1R2（I）的共催化剂b）选自烷基铝氧烷和具有式（II）的硼化合物的助催化剂：BX1X2X3（Ⅱ）或其盐之一; c）具有以下通式的锡衍生物：SnR 5 R 6 R 7 R 8（III）

    Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure
    2.
    发明授权
    Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure 失效
    制备具有主要间同立构结构的结晶乙烯基芳族聚合物的方法

    公开(公告)号：US5721327A

    公开(公告)日：1998-02-24

    申请号：US805247

    申请日：1997-02-24

    申请人： Roberto Santi ,  Giuseppe Cometti ,  Riccardo Po' ,  Nicoletta Cardi

    发明人： Roberto Santi ,  Giuseppe Cometti ,  Riccardo Po' ,  Nicoletta Cardi

    IPC分类号： C08F4/643 ,  C08F12/04 ,  C07F7/00

    CPC分类号： C08F12/04 ,  Y10S526/943

    摘要： Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure which involves polymerizing vinylaromatic monomers in the presence of a catalytic system comprising: a titanium complex having general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, the same or different, represent a hydrogen atom or a C.sub.1 -C.sub.20 alkyl radical or a C.sub.6 -C.sub.20 arylalkyl or aryl radical, on the condition that at least one of these is different from hydrogen.

    摘要翻译： 制备具有主要间同立构结构的结晶乙烯基芳族聚合物的方法，其包括在催化体系存在下聚合乙烯基芳族单体，包括：具有通式（I）的钛络合物：其中R1，R2，R3和 R 4相同或不同，表示氢原子或C 1 -C 20烷基或C 6 -C 20芳基烷基或芳基，条件是它们中的至少一个不同于氢。

    Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure
    3.
    发明授权
    Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure 失效
    具有主要间同立构结构的结晶乙烯基芳族聚合物的制备方法

    公开(公告)号：US5629391A

    公开(公告)日：1997-05-13

    申请号：US654202

    申请日：1996-05-28

    申请人： Nicoletta Cardi ,  Riccardo Po' ,  Roberto Santi ,  Giuseppe Cometti

    发明人： Nicoletta Cardi ,  Riccardo Po' ,  Roberto Santi ,  Giuseppe Cometti

    IPC分类号： C08F4/642 ,  C08F4/60 ,  C08F4/643 ,  C08F4/646 ,  C08F12/04 ,  C08F12/06 ,  C08F12/08 ,  C08F212/00

    CPC分类号： C08F12/04 ,  C08F12/08 ,  C08F2420/04

    摘要： Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers in the presence of a catalytic system consisting essentially of:a) a complex of titanium having the formula (I):Ti(OCONRR').sub.n (I) wherein R and R', the same or different, represent a C.sub.1 -C.sub.12 aliphatic radical or C.sub.6 -C.sub.12 aromatic radical whereas n is an integer equal to 3 or 4;b) a cocatalyst selected from aluminoxane and a compound of boron having formula (II):BX.sub.1 X.sub.2 X.sub.3 (II) wherein X.sub.1, X.sub.2 and X.sub.3, the same or different, represent a C.sub.1 -C.sub.20 perfluorinated hydrocarbon radical.

    摘要翻译： 制备具有主要间同立构结构的结晶乙烯基芳族聚合物的方法，其包括在催化体系存在下聚合乙烯基芳族单体，催化体系基本上由以下组成：a）具有式（I）的钛络合物：Ti（OCONRR'）n（ I）其中R和R'相同或不同，表示C1-C12脂族基或C6-C12芳族基，而n是等于3或4的整数; b）选自铝氧烷和具有式（II）的硼化合物的助催化剂：BX1X2X3（II）其中X1，X2和X3相同或不同，表示C1-C20全氟烃基。

    Process for the production of vinylaromatic polymers with a high degree of syndiotacticity
    5.
    发明授权
    Process for the production of vinylaromatic polymers with a high degree of syndiotacticity 失效
    用于制备具有高度间同立构规整度的乙烯基芳族聚合物的方法

    公开(公告)号：US5830959A

    公开(公告)日：1998-11-03

    申请号：US944783

    申请日：1997-10-06

    申请人： Riccardo Po' ,  Nicoletta Cardi ,  Roberto Santi

    发明人： Riccardo Po' ,  Nicoletta Cardi ,  Roberto Santi

    IPC分类号： C08F4/646 ,  C08F12/08 ,  C08F12/02

    CPC分类号： C08F12/08 ,  C08F4/65912

    摘要： Process for the preparation of crystalline vinylaromatic polymers with a high degree of syndiotacticity which comprises polymerizing vinylaromatic monomers in the presence of a catalytic system essentially consisting of: a) a complex of titanium selected from those having the general formula: (CpR.sub.1 R.sub.2 R.sub.3 R.sub.4 R.sub.5)TiX.sub.3 (I) wherein the groups R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent a hydrogen atom or C.sub.1 -C.sub.10 alkyl groups; X represents a hydrogen atom, a halogen such as chlorine, a C.sub.1 -C.sub.10 alkyl or oxyalkyl radical or a C.sub.6 -C.sub.12 oxyaryl radical; b) an alkylaluminoxane; and c) an organic derivative of tin; characterized in that the alkylaluminoxane is methylaluminoxane (MAO) treated at 20.degree.-80.degree. C. under vacuum for 1-100 hours and the organic derivative of tin is tin tetraphenyl.

    摘要翻译： 用于制备具有高程度间同立构规整度的结晶乙烯基芳族聚合物的方法，其包括在催化体系存在下聚合乙烯基芳族单体，所述催化体系基本上由以下组成：a）选自具有以下通式的那些钛络合物：（CpR1R2R3R4R5）TiX3（I ）其中基团R 1，R 2，R 3，R 4和R 5表示氢原子或C 1 -C 10烷基; X表示氢原子，卤素如氯，C1-C10烷基或烷氧基或C6-C12氧芳基; b）烷基铝氧烷; 和c）锡的有机衍生物; 其特征在于烷基铝氧烷是在20-80℃下真空处理1-100小时的甲基铝氧烷（MAO），锡的有机衍生物是四苯基锡。

    Process for the preparation of crystalline vinylaromatic polymers with a predominately syndiotactic structure
    6.
    发明授权
    Process for the preparation of crystalline vinylaromatic polymers with a predominately syndiotactic structure 失效
    制备具有主要间同立构结构的结晶乙烯基芳族聚合物的方法

    公开(公告)号：US6066706A

    公开(公告)日：2000-05-23

    申请号：US716882

    申请日：1996-09-20

    申请人： Roberto Santi ,  Giuseppe Cometti ,  Riccardo Po'

    发明人： Roberto Santi ,  Giuseppe Cometti ,  Riccardo Po'

    IPC分类号： C08F4/642 ,  C08F4/60 ,  C08F4/646 ,  C08F4/659 ,  C08F4/6592 ,  C08F12/00 ,  C08F12/04 ,  C08F12/08 ,  C08F12/06

    CPC分类号： C08F12/04 ,  C08F10/00 ,  Y10S526/943

    摘要： Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers, alone or mixed with at least another copolymerizable ethylenically unsaturated monomer, in the presence of a catalytic system essentially consisting of:a) an adduct between a derivative of titanium having the formula R.sub.1 R.sub.2 R.sub.3 R.sub.4 Ti and a calix-[n]-arene, or an oxa-calix-[n]-arene;b) a co-catalyst selected from an alkylalumoxane and a compound of boron having the formula (II):BX.sub.1 X.sub.2 X.sub.3 or its salt.

    摘要翻译： 用于制备主要间同立构结构的结晶乙烯基芳族聚合物的方法，该方法包括在催化体系存在下单独或与至少另一种可共聚的烯属不饱和单体混合的乙烯基芳族单体聚合，所述催化体系基本上由以下组成：a）衍生物之间的加合物 具有式R1R2R3R4Ti和杯[ - ] - 芳烃或氧杂 - 杯 - [n] - 芳烃的钛; b）选自烷基铝氧烷和具有式（II）的硼化合物的助催化剂：BX1X2X3或其盐。

    Catalytic composition for the hydrogenation of olefinically unsaturated organic compounds
    9.
    发明授权
    Catalytic composition for the hydrogenation of olefinically unsaturated organic compounds 有权
    用于烯属不饱和有机化合物氢化的催化组合物

    公开(公告)号：US06281397B1

    公开(公告)日：2001-08-28

    申请号：US09235378

    申请日：1999-01-22

    申请人： Roberto Santi ,  Francesco Masi ,  Gianfranco Longhini

    发明人： Roberto Santi ,  Francesco Masi ,  Gianfranco Longhini

    IPC分类号： C07C1300

    CPC分类号： B01J31/0212 ,  B01J31/122 ,  B01J2231/645 ,  C07B35/02 ,  C07C5/03 ,  C07C67/303 ,  C07C2531/12 ,  C07C2531/22

    摘要： A catalytic composition effective in the selective hydrogenation of olefinic double bonds, comprising the reaction product between: (A) at least one complex of a transition metal having the following general formula (I): M(R1)(R2)(R3)(R4)  (I)  wherein: M is selected from titanium and zirconium, preferably titanium; each of the radicals R1, R2, R3 or R4, independently, represents an organic or inorganic group of an anionic nature &sgr;-bound to M, on the condition that at least one, and preferablyat at least two, of these radicals is an organic group; and (B) at least one organometallic compound of magnesium having the following formula (II): Mg(R5)n(R6)(2−n)  (II)  wherein: R5 or R6 each independently represent an aliphatic or aromatic hydrocarbon group having from 1 to 20 carbon atoms, and “n” is a decimal number between 0 and 2.0. Said catalytic composition advantageously and selectively promotes the direct hydrogenation of double bonds of an olefinic type, with high rates and with a reduced formation of isomers.

    摘要翻译： 包括有效地选择性氢化烯属双键的催化组合物，其包含以下反应产物：（A）至少一种具有以下通式（I）的过渡金属络合物：其中：M选自钛和锆，优选 钛;每个基团R 1，R 2，R 3或R 4独立地表示与M结合的阴离子性质的有机或无机基团，条件是这些基团中至少一个，优选至少两个是这些基团 有机团体 和（B）至少一种具有下式（II）的镁的有机金属化合物：其中：R 5或R 6各自独立地表示具有1至20个碳原子的脂族或芳族烃基，“n”是 0和2.0。所述催化剂组合物有利且选择性地促进烯烃型双键的直接氢化，具有高速率和减少的异构体形成。