Process for production of high-isoprene butyl rubber
    6.
    发明授权
    Process for production of high-isoprene butyl rubber 有权
    生产高异戊二烯丁基橡胶的方法

    公开(公告)号:US07282548B2

    公开(公告)日:2007-10-16

    申请号:US10776761

    申请日:2004-02-11

    IPC分类号: C08F4/14 C08F210/12

    摘要: The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl3 and a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.

    摘要翻译: 本发明涉及以50至95%的转化率生产聚合物的连续方法,门尼粘度至少为25门尼单元,凝胶含量小于15wt。 含有衍生自至少一种异烯烃单体的重复单元的%,大于4.1摩尔%的衍生自至少一种多烯烃单体的重复单元和任选的其它可共聚单体,在AlCl 3存在下和合适的质子源 (例如水)或阳离子原子和至少一种多烯烃交联剂,其中该方法在不存在过渡金属化合物和有机硝基化合物的情况下进行。

    Initiator systems containing vanadium tetrachloride for the
(co)polymerization of isoolefins
    7.
    发明授权
    Initiator systems containing vanadium tetrachloride for the (co)polymerization of isoolefins 失效
    含有四氯化钒用于异烯烃的(共)聚合的引发剂体系

    公开(公告)号:US6015841A

    公开(公告)日:2000-01-18

    申请号:US884969

    申请日:1997-06-30

    CPC分类号: C08F210/12

    摘要: This invention relates to an initiator system for the polymerization of isoolefins having 4 to 16 carbon atoms, optionally with monomers polymerizable with isoolefins, the system consisting of or one or more aromatic or heteroaromatic, polycyclic hydrocarbons and an aged, organic solution of vanadium tetrachloride, wherein the concentration of the vanadium tetrachloride is 0.01 mmol to 500 mmol per liter of solvent and the molar ratio of aged vanadium tetrachloride to polycyclic hydrocarbons is in the range from 100:1 to 1:100.It is possible by means of the initiator system according to the invention to produce polyisoolefins, in particular butyl rubbers, at relatively high temperatures with only a low gel content and of a sufficiently high molecular weight.

    摘要翻译: 本发明涉及用于聚合具有4至16个碳原子的异烯烃的引发剂体系,任选具有可用异烯烃聚合的单体,该体系由一种或多种芳族或杂芳族多环烃和老化的四氯化钒有机溶液组成, 其中四氯化钒的浓度为每升溶剂为0.01mmol至500mmol,老化的四氯化钒与多环烃的摩尔比在100:1至1:100的范围内。 通过根据本发明的引发剂体系,可以在相对高的温度下仅产生低凝胶含量和足够高的分子量来生产聚异丁烯,特别是丁基橡胶。

    PROCESS FOR PRODUCTION OF HIGH-ISOPRENE BUTYL RUBBER
    8.
    发明申请
    PROCESS FOR PRODUCTION OF HIGH-ISOPRENE BUTYL RUBBER 审中-公开
    高异丙烯丁二烯橡胶的生产工艺

    公开(公告)号:US20090018289A1

    公开(公告)日:2009-01-15

    申请号:US12235861

    申请日:2008-09-23

    IPC分类号: C08F4/52

    摘要: The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl3 and a suitable proton source (e.g. water) or cationogen and at least one multiolefin cross-linking agent wherein the process is conducted in the absence of transition metal compounds and organic nitro compounds.

    摘要翻译: 本发明涉及以50至95%的转化率生产聚合物的连续方法,门尼粘度至少为25门尼单元,凝胶含量小于15wt。 %的重复单元衍生自至少一种异烯烃单体,大于4.1摩尔%的衍生自至少一种多烯烃单体的重复单元和任选的其它可共聚单体,在AlCl 3和合适的质子源(例如水)或阳离子存在下,以及在 至少一种多烯烃交联剂,其中该方法在不存在过渡金属化合物和有机硝基化合物的情况下进行。