利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

5 条记录 (耗时 0.01 秒)

    Process for production of high molecular weight EPDM elastomers using a metallocene-alumoxane catalyst system
    3.
    发明公开
    Process for production of high molecular weight EPDM elastomers using a metallocene-alumoxane catalyst system 失效
    一种用于生产使用金属茂 - 铝恶烷催化剂体系的高分子量EPDM弹性体的过程。

    公开(公告)号：EP0347129A1

    公开(公告)日：1989-12-20

    申请号：EP89305878.4

    申请日：1989-06-09

    申请人： EXXON CHEMICAL PATENTS INC.

    发明人： Floyd, Sigmund ,  Hoel, Elvin Lynn

    IPC分类号： C08F210/18 ,  C08F4/642

    CPC分类号： C08F210/18 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927 ,  C08F210/06 ,  C08F2500/25 ,  C08F2500/17 ,  C08F2500/21 ,  C08F2500/03

    摘要： A process for producing a high molecular weight EPDM elastomer having low crystallinity using a bridged bis-metallocene-alumoxane catalyst wherein the metallocene component of the catalyst has the formula:
    wherein "M" is titanium, zirconium or hafnium; each "R¹" independently is a C₁ to C₂₀ linear, branched or cyclic alkyl group or a C₂ to C₄ alkylene which forms a fused ring system; "R²" is a C₁ to C₆ linear, branched or cyclic alkylene group, an alkyl substituted silanylene group or an alkyl substituted silaalkylene group; each "X" independently is a halogen, hydride, alkyl, aryl or chelating group, and "y" is an integer of 2 to 4.

    摘要翻译： 一种用于生产使用桥连的双 - 茂金属 - 铝氧烷催化剂worin催化剂的金属茂组分具有低结晶度的高分子量EPDM弹性体的方法具有下式： worin“M”是钛，锆或铪; 各“R <1>”unabhängig是C1至C20直链，支链或环状烷基或C 2至形成稠环体系C4亚烷基; “R <2>”是一个C1至C6直链，支链或环状的，亚烷基，烷基或烷基substituiertem亚硅碳烷基的硅烷基的substituiertem; 每个“X”unabhängig是卤素，氢化物，烷基，芳基或螯合基团，和“y”为2至第四的整数

    Process for production of a high molecular weight ethylene a-olefin elastomer with a metallogene alumoxane catalyst
    4.
    发明公开
    Process for production of a high molecular weight ethylene a-olefin elastomer with a metallogene alumoxane catalyst 无效
    一种使用金属茂 - 铝氧烷催化剂的高分子量的乙烯-α-烯烃弹性体的制备方法。

    公开(公告)号：EP0347128A1

    公开(公告)日：1989-12-20

    申请号：EP89305877.6

    申请日：1989-06-09

    申请人： EXXON CHEMICAL PATENTS INC.

    发明人： Hoel, Elvin Lynn

    IPC分类号： C08F210/16 ,  C08F4/64

    CPC分类号： C08F210/16 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65922 ,  Y10S526/904 ,  Y10S526/943 ,  C08F2500/01 ,  C08F2500/03

    摘要： Disclosed is a process for preparing high molecular weight ethylene-α-olefin elastomers, preferably an ethylene-propylene elastomer, by liquid phase polymerization of the requisite monomers in the presence of a metallocene/alumoxane catalyst system. Preferably, the process is carried out as a slurry polymerization utilizing the metallocene/alumoxane catalyst in supported form on a silica gel support with the α-olefin monomer maintained in liquid state and used in excess to serve as a polymerization diluent. The metallocene component of the catalyst by which the process is practiced is of the formul:
    wherein M is zirconium, titanium or hafnium; each R¹ independently is a C₁-C₂₀ linear, branched or cyclic alkyl group or a C₂-C₄ cyclic alkylene group which forms a fused ring system group; R² is a C₁-C₆ linear, branched or cyclic alkylene, a Si₁-Si₂ alkyl substituted silanylene group or an alkyl substituted silaalkylene group; each X independently is an alkyl, aryl, halide, hydride or oxygen bridge of a zirconocene dimer; "y" is a number 2, 3 or 4, and "b" is a number 0 or 1. M is preferably zirconium. Most preferably, the supported zirconocene/alumoxane catalyst is prepolymerized with ethylene or another olefin to provide spherical, free-flowing catalyst particles which give free-flowing particulate elastomer product from the slurry polymerization.

    摘要翻译： 公开了用于在金属茂/铝恶烷催化剂体系存在下制备高分子量乙烯-α-烯烃弹性体，优选的乙烯 - 丙烯弹性体，由必需的单体的液相聚合反应的方法。优选地，该过程被执行作为 淤浆聚合利用以负载形式的金属茂/铝恶烷催化剂与在液体状态保持，并以过量使用，以用作聚合稀释剂的α-烯烃单体硅胶载体。 通过该过程被实行的催化剂的金属茂组分是FORMUL的： worin M是锆，钛或铪; 每个R <1>独立地是C1-C20线性，支化或环状的烷基或形成稠环体系基团的C2-C4环状的亚烷基; [R <2>是C1-C6直链，支链或环状亚烷基，一个的Si1-Si2的烷基或烷基substituiertem亚硅碳烷基的硅烷基substituiertem; 独立地各X是锆茂二聚体的烷基，芳基，卤化物，氢化物或氧桥; “Y”是数字2,3或4，和“b”是一个数字0或1，M优选为锆。 最优选地，所支持的锆茂/铝恶烷催化剂预聚合和乙烯或另一种烯烃，以提供球形的，自由流动的催化剂颗粒哪个得到自由流动的颗粒弹性体产品从淤浆聚合反应。