利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

238 条记录 (耗时 0.044 秒)

    Hydrogenated copolymer and composition thereof
    4.
    发明授权
    Hydrogenated copolymer and composition thereof 有权
    氢化共聚物及其组成

    公开(公告)号：US07371805B2

    公开(公告)日：2008-05-13

    申请号：US10513926

    申请日：2003-06-26

    申请人： Masahiro Sasagawa ,  Toshinori Shiraki ,  Shigeki Takayama ,  Shigeru Sasaki ,  Katsumi Suzuki ,  Takahiro Hisasue ,  Kazuo Moritou

    发明人： Masahiro Sasagawa ,  Toshinori Shiraki ,  Shigeki Takayama ,  Shigeru Sasaki ,  Katsumi Suzuki ,  Takahiro Hisasue ,  Kazuo Moritou

    IPC分类号： C08F12/04 ,  C08F36/04

    CPC分类号： C08F8/04 ,  C08F297/04

    摘要： A hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer comprising conjugated diene monomer units and vinyl aromatic monomer units, the hydrogenated copolymer containing at least one hydrogenated copolymer block (B) which is obtained by hydrogenating an unhydrogenated random copolymer block comprised of conjugated diene monomer units and vinyl aromatic monomer units, wherein the hydrogenated copolymer has the following characteristics: the hydrogenated copolymer has a content of the vinyl aromatic monomer units of from more than 40% by weight to less than 95% by weight; at least one peak of loss tangent (tan δ) is observed at −10 to 80° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer; and substantially no crystallization peak ascribed to the copolymer block (B) is observed at −20 to 80° C. in a differential scanning calorimetry (DSC) chart obtained with respect to the hydrogenated copolymer.

    摘要翻译： 通过氢化包含共轭二烯单体单元和乙烯基芳族单体单元的未氢化共聚物获得的氢化共聚物，所述氢化共聚物含有至少一个氢化共聚物嵌段（B），其通过氢化由共轭二烯单体单元组成的未氢化无规共聚物嵌段和 乙烯基芳族单体单元，其中氢化共聚物具有以下特征：氢化共聚物的乙烯基芳族单体单元的含量大于40重量％至小于95重量％; 在相对于氢化共聚物获得的动态粘弹性光谱中，在-10〜80℃观察到损耗角正切（tanδ）的至少一个峰值。 在相对于氢化共聚物获得的差示扫描量热法（DSC）图中，在-20〜80℃观察到基本上不归属于共聚物嵌段（B）的结晶峰。

    Multinuclear half metallocene catalyst and preparation of styrene polymer using the same
    6.
    发明授权
    Multinuclear half metallocene catalyst and preparation of styrene polymer using the same 有权
    多核半茂金属催化剂和使用苯乙烯聚合物的制备

    公开(公告)号：US06894129B2

    公开(公告)日：2005-05-17

    申请号：US10380022

    申请日：2002-07-11

    申请人： Min-Hyung Lee ,  You-Mi Jeong ,  Jin-Young Ryu

    发明人： Min-Hyung Lee ,  You-Mi Jeong ,  Jin-Young Ryu

    IPC分类号： C08F4/60 ,  C07F17/00 ,  C08F4/642 ,  C08F4/6592 ,  C08F4/76 ,  C08F12/00 ,  C08F12/04 ,  C08F4/64 ,  C08F112/08

    CPC分类号： C07F17/00 ,  C08F4/65912 ,  C08F12/08 ,  C08F2410/03 ,  C08F2420/04 ,  C08F4/6592

    摘要： The present invention relates to a catalyst for preparing vinyl aromatic polymer and styrene polymerization using the same, and particularly to a transition metal half metallocene catalyst with a novel structure for preparing syndiotactic styrene polymer having high activity, superior stereoregularity, high melting point and various molecular weight distributions and a process for preparing styrene polymer using the same. The present invention provides a multinuclear half metallocene compound in which two or more of transition metals of groups 3 to 10 on periodic table are connected through bridge ligand simultaneously containing π-ligand cycloalkandienyl group and σ-ligand functional group and its preparation, and a process for preparing styrene polymer using the compound as a catalyst. Polymers with various molecular weight distributions as well as vinyl aromatic polymer having predominant syndiotactic structure can be prepared with high activity using the multinuclear half metallocene catalyst.

    摘要翻译： 本发明涉及一种用于制备乙烯基芳族聚合物的催化剂和使用该催化剂的苯乙烯聚合反应，特别涉及一种具有新型结构的过渡金属半茂金属催化剂，用于制备具有高活性，优异的立构规整性，高熔点和各种分子的间同立构苯乙烯聚合物 重量分布和使用其制备苯乙烯聚合物的方法。 本发明提供了一种多核半茂金属化合物，其中周期表上的3至10族的过渡金属中的两种或更多种通过桥联配体连接，同时含有π-配体环二烷基和σ-配体官能团及其制备方法 用于制备使用该化合物作为催化剂的苯乙烯聚合物。 具有各种分子量分布的聚合物以及具有主要间同立构结构的乙烯基芳族聚合物可以使用多核半茂金属催化剂以高活性制备。

    Process for producing stereospecific polymers
    7.
    发明授权
    Process for producing stereospecific polymers 有权
    制备立体有择聚合物的方法

    公开(公告)号：US06855782B2

    公开(公告)日：2005-02-15

    申请号：US10114185

    申请日：2002-04-02

    申请人： Edwar S. Shamshoum ,  Margarito Lopez

    发明人： Edwar S. Shamshoum ,  Margarito Lopez

    IPC分类号： C08F4/02 ,  C08F4/60 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/06 ,  C08F12/04 ,  C08F110/06

    CPC分类号： C08F10/06 ,  C08F4/025 ,  C08F4/65912 ,  C08F4/65927 ,  C08F12/04 ,  C08F110/06 ,  Y02P20/52 ,  Y10S526/943 ,  C08F4/65916 ,  C08F2500/16

    摘要： Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, such as styrene and vinyl chloride. One application is the stereospecific propagation of C3-C4 alpha olefins, particularly the polymerization of propylene to produce syndiotactic polypropylene over a supported metallocene catalyst comprising a stereospecific metallocene catalyst component incorporating a metallocene ligand structure having two sterically dissimilar cyclopentadienyl ring structures coordinated with the central transition metal atom. Both of the cyclopentadienyl groups are in a relationship with one another by virtue of bridge or substituent groups, which provide a stereorigid relationship relative to the coordinating transition metal atom to prevent rotation of said ring structures. The metallocene catalyst component and a co-catalyst component, an alumoxane or an alkyl aluminum, are supported on a particulate silica support comprising spheroidal silica particles having an average diameter within the range of 5-40 microns and an average effective pore size within the range of 50-350 angstroms. The particulate silica support contains at least 50 wt. % of the supported catalyst component within the pore volume of the silica support.

    摘要翻译： 支持的立体定向催化剂和衍生自含有三个或更多个碳原子的乙烯基不饱和单体的聚合物链的立体定向增长的方法，或者是取代的乙烯基化合物如苯乙烯和氯乙烯。 一个应用是C3-C4α烯烃的立体特异性扩增，特别是丙烯在负载金属茂催化剂下聚合制备间同立构聚丙烯的方法，该催化剂包含立体特异性茂金属催化剂组分，该组分含有具有两个与中心转移配位的空间不同的环戊二烯基环结构的茂金属配体结构 金属原子。 两个环戊二烯基通过桥或取代基相互关系，其提供相对于配位过渡金属原子的立体刚性关系以防止所述环结构的旋转。 金属茂催化剂组分和助催化剂组分，铝氧烷或烷基铝负载在颗粒状二氧化硅载体上，所述颗粒二氧化硅载体包含平均直径在5-40微米范围内的平均直径范围的球形二氧化硅颗粒，并且平均有效孔径在该范围内 50-350埃。 颗粒状二氧化硅载体含有至少50wt。 负载的催化剂组分的百分比在二氧化硅载体的孔体积内。

    Syndiotactic vinylidene aromatic polymerization process
    8.
    发明授权
    Syndiotactic vinylidene aromatic polymerization process 失效
    间规亚乙烯芳族聚合方法

    公开(公告)号：US6075104A

    公开(公告)日：2000-06-13

    申请号：US125954

    申请日：1998-08-26

    申请人： Thomas H. Newman ,  Karen K. Borodychuk

    发明人： Thomas H. Newman ,  Karen K. Borodychuk

    IPC分类号： C08F4/642 ,  C08F4/54 ,  C08F4/64 ,  C08F4/649 ,  C08F12/04 ,  C08F12/06

    CPC分类号： C08F12/08 ,  C08F4/65912 ,  Y10S526/943

    摘要： A process for polymerizing vinylidene aromatic monomers, such as styrene, to produce polymers having a high degree of syndiotacticity using a catalyst composition comprising a Group 4 metal complex and a hydrocarbylsilane or di(hydrocarbyl)silane catalyst adjuvant is disclosed.

    摘要翻译： PCT No.PCT / US97 / 06428 Sec。 371日期：1998年8月26日 102（e）日期1998年8月26日PCT 1997年4月17日PCT公布。 公开号WO97 / 42234 日期1997年11月13日公开了使用包含第4族金属络合物和烃基硅烷或二（烃基）硅烷催化剂助剂的催化剂组合物使亚乙烯基芳族单体如苯乙烯聚合以制备具有高程度间同立构规整度的聚合物的方法。

    Process for the preparation of crystalline vinylaromatic polymers with a predominately syndiotactic structure
    9.
    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。

    Acid catalyzed polymerization
    10.
    发明授权
    Acid catalyzed polymerization 失效
    酸催化聚合

    公开(公告)号：US5948874A

    公开(公告)日：1999-09-07

    申请号：US65974

    申请日：1998-04-24

    申请人： William C. Pike ,  Duane B. Priddy

    发明人： William C. Pike ,  Duane B. Priddy

    IPC分类号： C08F2/00 ,  C08F4/00 ,  C08F12/04 ,  C08F220/06 ,  C08F2/02 ,  C08F220/10

    CPC分类号： C08F12/04

    摘要： The present invention is an improvement in a free radical bulk polymerization process for preparing a high molecular weight polymer from a vinyl aromatic monomer characterized in that the polymerization is conducted in the presence of an acid catalyst having a pKa at 25.degree. C. of less than 2, or salt thereof, wherein the improvement comprises dispersing the acid catalyst, or salt thereof, in a (meth)acrylic acid or ester thereof, prior to contact with the vinyl aromatic monomer. The (meth)acrylic acid or ester allows the acid catalyst to be dispersed within the vinyl aromatic monomer without causing cationic polymerization. The acid catalyst, or salt thereof, catalyzes the free radical polymerization reaction such that high molecular weight polymers are produced in reasonable reaction times.

    摘要翻译： 本发明是一种用于由乙烯基芳族单体制备高分子量聚合物的自由基本体聚合方法的改进，其特征在于聚合反应在酸性催化剂存在下进行，其中pKa在25℃下小于 2或其盐，其中改进包括在与乙烯基芳族单体接触之前将酸催化剂或其盐分散在（甲基）丙烯酸或其酯中。 （甲基）丙烯酸酯可使酸催化剂分散在乙烯基芳族单体中而不引起阳离子聚合。 酸催化剂或其盐催化自由基聚合反应，使得在合理的反应时间内产生高分子量聚合物。