Elastomeric blend for air barriers
    1.
    发明申请
    Elastomeric blend for air barriers 审中-公开
    空气阻隔弹性共混物

    公开(公告)号:US20050222335A1

    公开(公告)日:2005-10-06

    申请号:US10518886

    申请日:2003-05-30

    摘要: The present invention provides a composition suitable for an air barrier such as an automotive tire innertube, innerliner, and aircraft tire innertube or innerliner, curing bladders, and other pneumatic devices. The composition comprises an elastomer comprising C4 to C7 isoolefin derived units; and a plastomer, wherein the plastomer is a copolymer of ethylene derived units and C3 to C10 α-olefin derived units, the plastomer having a density of less than 0.915 g/cm3. In a desirable embodiment, naphthenic and aromatic oils are substantially absent from the composition. In another embodiment, a polybutene processing oil is present. Further, in yet another embodiment, a secondary rubber is also present such as, for example, natural rubber or butyl rubber, or a butadiene-based rubber.

    摘要翻译: 本发明提供一种适用于空气阻隔物的组合物,例如汽车轮胎内胎管,内衬和飞行器轮胎内胎管或内衬,固化气囊和其它气动装置。 该组合物包含含C 4〜C 7异构烯烃衍生单元的弹性体; 和塑性体,其中塑性体是由乙烯衍生的单元和C 3至C 10α-烯烃衍生的单元的共聚物,塑性体的密度小于0.915g / cm 3。 在期望的实施方案中,环烷烃和芳族油基本上不存在于组合物中。 在另一个实施方案中,存在聚丁烯加工油。 此外,在另一个实施方案中,还存在二次橡胶,例如天然橡胶或丁基橡胶或丁二烯基橡胶。

    Processable branched isoolefin-alkylstyrene elastomers
    3.
    发明申请
    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:US20070213444A1

    公开(公告)日:2007-09-13

    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。