EFFICIENT MIXING PROCESS FOR PRODUCING THERMOPLASTIC ELASTOMER COMPOSITION
    12.
    发明申请
    EFFICIENT MIXING PROCESS FOR PRODUCING THERMOPLASTIC ELASTOMER COMPOSITION 有权
    用于生产热塑性弹性体组合物的高效混合方法

    公开(公告)号:US20100331452A1

    公开(公告)日:2010-12-30

    申请号:US12682490

    申请日:2007-10-11

    IPC分类号: C08J3/20 C08L77/00

    摘要: A durable, flexible, impermeable thermoplastic elastomer composition is produced using a dynamic vulcanization process conducted in a high shear mixer at elevated temperature. The composition comprises cured particles of a first halogenated isobutylene-containing elastomer and particles of a second elastomer having at least one functional group capable of reacting with and grafting to a polyamide, the particles of the first and second elastomers dispersed in a continuous thermoplastic polyamide matrix, said process comprising: (1) dispersing a curative in the halogenated elastomer and forming a pre-compounded, preferably pelletized composition; (2) introducing polyamide resin and optional stabilizers into the mixer and shearing and heating to melt the polyamide and form a mixture; (3) introducing a nylon plasticizer to reduce the viscosity of the polyamide mixture to substantially match that of the pre-compounded elastomer under mixing conditions; (4) introducing pellets of the pre-compounded elastomer into the mixer and initiating dynamic vulcanization of the elastomer and polyamide components; (5) introducing the second elastomer and continuing heating and shearing to disperse the second elastomer and substantially complete dynamic vulcanization; and delivering the thermoplastic elastomer composition from the mixer. Such compositions are particularly useful in applications such as tire innerliners and barrier films or layers.

    摘要翻译: 使用在高剪切混合器中在高温下进行的动态硫化方法制备耐用的,柔性的,不渗透的热塑性弹性体组合物。 该组合物包含含有第一卤代异丁烯的弹性体的固化颗粒和具有至少一个能够与聚酰胺反应和接枝到聚酰胺上的官能团的第二弹性体颗粒,第一和第二弹性体的颗粒分散在连续的热塑性聚酰胺基质 所述方法包括:(1)将固化剂分散在卤化弹性体中并形成预混合的,优选颗粒状的组合物; (2)将聚酰胺树脂和任选的稳定剂引入混合器中并剪切和加热以熔化聚酰胺并形成混合物; (3)在混合条件下引入尼龙增塑剂以降低聚酰胺混合物的粘度与预混合弹性体的粘度基本一致; (4)将预混合弹性体的颗粒引入混合器中并引发弹性体和聚酰胺组分的动态硫化; (5)引入第二弹性体并继续加热和剪切以分散第二弹性体并基本上完成动态硫化; 并从混合器中输送热塑性弹性体组合物。 这样的组合物特别适用于诸如轮胎内衬和阻挡膜或层的应用。

    Low permeability nanocomposites
    16.
    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。

    Low permeability nanocomposites
    17.
    发明授权
    Low permeability nanocomposites 有权
    低渗透性纳米复合材料

    公开(公告)号:US07407999B2

    公开(公告)日:2008-08-05

    申请号:US10476936

    申请日:2002-05-29

    IPC分类号: C08K9/00 C08K3/00

    摘要: The present invention is a blend of a thermoplastic engineering resin and 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 exfoliated-clay, the entire blend forming a nanocomposite. The resin may or may not have a clay 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 air barrier.

    摘要翻译: 本发明是一种热塑性工程树脂和一种互聚物的混合物,在一个实施方案中,C 4-14 C 6 - 异丁烯烯烃,对甲基苯乙烯和对 - (卤代甲基苯乙烯),共聚体已经与剥离粘土预混合,整个共混物形成纳米复合材料。 在与共聚体共混之前,树脂可以具有也可以不具有粘土。 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。

    Processes for making polyolefin nanocomposites
    20.
    发明授权
    Processes for making polyolefin nanocomposites 有权
    制造聚烯烃纳米复合材料的方法

    公开(公告)号:US08840996B2

    公开(公告)日:2014-09-23

    申请号:US13329792

    申请日:2011-12-19

    IPC分类号: B32B9/00

    摘要: A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.

    摘要翻译: 一种制备二氧化硅 - 聚烯烃复合材料的方法。 该方法具有以下步骤:(a)在溶剂和催化剂存在下使二氧化硅颗粒和烷基卤硅烷反应形成硅烷官能化二氧化硅颗粒,和(b)硅烷官能化二氧化硅颗粒与乙烯基封端的聚烯烃反应。 还有其他制备二氧化硅 - 聚烯烃复合材料的方法。 制备金属磷酸盐 - 聚烯烃复合材料还有其他工艺。