Processable branched isoolefin-alkylstyrene elastomers
    1.
    发明授权
    Processable branched isoolefin-alkylstyrene elastomers 有权
    可加工的支链异烯烃 - 烷基苯乙烯弹性体

    公开(公告)号:US07767743B2

    公开(公告)日:2010-08-03

    申请号:US11373783

    申请日:2006-03-10

    IPC分类号: C08K5/09

    摘要: A branched isobutylene-styrenic elastomer with a broad molecular weight distribution is disclosed comprising an interpolymer of an isoolefin monomer as isobutylene, a styrenic monomer such as p-methylstyrene, and a multiolefin such as divinylbenzene. The elastomer has improved green strength, relaxation characteristics, and processability in melt processing, while retaining excellent aging characteristics and barrier properties, and can be used in a blend with a linear isobutylene-p-alkylstyrene elastomer to improve processability of the linear elastomer. Also disclosed are a method for processing the linear elastomer with an effective amount of the branched elastomer to improve processability, and nanocomposites, curable compositions, cured compositions and useful articles formed from the branched elastomer and the linear-branched elastomer blends.

    摘要翻译: 公开了具有宽分子量分布的支链异丁烯 - 苯乙烯系弹性体,其包含异烯烃单体作为异丁烯的共聚体,苯乙烯单体如对甲基苯乙烯和多烯烃如二乙烯基苯。 弹性体在熔融加工中具有改善的生坯强度,松弛特性和加工性能,同时保持优异的老化特性和阻隔性能,并且可用于与线性异丁烯 - 对烷基苯乙烯弹性体的共混物中,以改善线性弹性体的加工性能。 还公开了一种用有效量的支化弹性体处理线性弹性体以改善加工性能的方法,以及由支化弹性体和直链支化弹性体共混物形成的纳米复合材料,可固化组合物,固化组合物和有用制品。

    Low permeability nanocomposites
    5.
    发明授权
    Low permeability nanocomposites 有权
    低渗透性纳米复合材料

    公开(公告)号:US07491764B2

    公开(公告)日:2009-02-17

    申请号:US10478606

    申请日:2002-05-29

    IPC分类号: C08K5/01

    摘要: The present invention includes blends of a halogenated elastomer such as a butyl rubber or an interpolymer of, on one embodiment, a C4 to C7 isomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliating compound and clay, the entire blend forming a nanocomposite in one embodiment. The clay may or may not have undergone an additional exfoliating treatment prior to blending with the halogenated elastomer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an air barrier.

    摘要翻译: 本发明包括卤化弹性体如丁基橡胶或在一个实施方案中为C4至C7异单烯烃,对甲基苯乙烯和对 - (卤代甲基苯乙烯)的互聚物的共混体,该互聚物已经与 去角质化合物和粘土,在一个实施方案中,整个共混物形成纳米复合材料。 在与卤化弹性体共混之前,粘土可以或可以不经历额外的去角质处理。 互聚物/粘土混合物在本发明的纳米复合材料混合物中形成不同的相。 本发明的共混物具有改善的空气阻隔性能,并且适合作为空气屏障。

    Low permeability nanocomposites
    6.
    发明授权
    Low permeability nanocomposites 有权
    低渗透性纳米复合材料

    公开(公告)号:US07485677B2

    公开(公告)日:2009-02-03

    申请号:US10478281

    申请日:2002-05-29

    IPC分类号: C08K3/34 C08C19/22 C08L27/00

    摘要: The present invention is a blend of an halogenated elastomer and a clay, desirably an exfoliated clay, to form a nanocomposite suitable for an air barrier. In one embodiment, the halogenated elastomer is a polymer comprising C4 to C7 isoolefin derived units, a para-methylstyrene derived units, and para-(halomethylstyrene) derived units. In another embodiment, the halogenated elastomer is a butyl-type rubber. The clay may or may not have an additional exfoliating treatment present prior to blending with the interpolymer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an innerliner or innertube.

    摘要翻译: 本发明是卤化弹性体和粘土的混合物,理想地是剥离粘土,以形成适合于空气屏障的纳米复合材料。 在一个实施方案中,卤化弹性体是包含C4-C7异烯烃衍生单元,对甲基苯乙烯衍生单元和对 - (卤代甲基苯乙烯)衍生单元的聚合物。 在另一个实施方案中,卤化弹性体是丁基型橡胶。 在与共聚体共混之前,粘土可以或可以不具有额外的去角质处理。 互聚物/粘土混合物在本发明的纳米复合材料混合物中形成不同的相。 本发明的共混物具有改善的空气阻隔性能,并且适合作为内衬或内管。

    Split-stream process for making nanocomposites
    10.
    发明授权
    Split-stream process for making nanocomposites 有权
    用于制造纳米复合材料的分流工艺

    公开(公告)号:US07501460B1

    公开(公告)日:2009-03-10

    申请号:US11183361

    申请日:2005-07-18

    IPC分类号: C08J3/20

    摘要: The present invention is a process to produce a nanocomposite of a elastomer and organic clay, e.g. an exfoliated clay, suitable for use as an air barrier. The process can include the steps of: (a) contacting a solution (10) of butyl rubber in an organic solvent with a halogen (12) to form a halogenated butyl rubber solution (16); (b) neutralizing the halogenated butyl rubber solution; (c) functionalizing at least a portion (18) of the halogenated butyl rubber; (d) mixing a dispersion (22) of clay with the functionalized butyl rubber (18) to form a masterbatch (26) comprising a polymer-clay nanocomposite; (e) combining the masterbatch (26) with the rest of the halogenated butyl rubber solution (20) to form a second mixture (28); (e) recovering the nanocomposite from the second mixture (28). The nanocomposite so formed has improved air barrier properties and is suitable for use as a tire innerliner or innertube.

    摘要翻译: 本发明是一种制备弹性体和有机粘土的纳米复合材料的方法,例如, 一种适合用作空气屏障的剥离粘土。 该方法可以包括以下步骤:(a)将丁基橡胶在有机溶剂中的溶液(10)与卤素(12)接触以形成卤化丁基橡胶溶液(16); (b)中和卤化丁基橡胶溶液; (c)官能化所述卤化丁基​​橡胶的至少一部分(18); (d)将粘土分散体(22)与官能化丁基橡胶(18)混合以形成包含聚合物 - 粘土纳米复合材料的母料(26); (e)将母料(26)与其余的卤化丁基橡胶溶液(20)组合以形成第二混合物(28); (e)从第二混合物(28)回收纳米复合材料。 如此形成的纳米复合材料具有改善的空气阻隔性能,并且适合用作轮胎内衬或内管。