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    Polypropylene nanocomposites
    3.
    发明申请
    Polypropylene nanocomposites 审中-公开
    聚丙烯纳米复合材料

    公开(公告)号：US20070093592A1

    公开(公告)日：2007-04-26

    申请号：US11305728

    申请日：2005-12-15

    申请人： Tae Won Hwang ,  Soon Joon Jung ,  Chi Hoon Choi ,  Jae Young Jo ,  Byeong Uk Nam

    发明人： Tae Won Hwang ,  Soon Joon Jung ,  Chi Hoon Choi ,  Jae Young Jo ,  Byeong Uk Nam

    IPC分类号： C08K5/00

    CPC分类号： C08L51/006 ,  C08K9/04 ,  C08L23/0815 ,  C08L23/10 ,  C08L23/16 ,  C08L51/06 ,  C08L53/00 ,  C08L2310/00 ,  C08L2666/02 ,  C08L2666/24 ,  C08L2666/04

    摘要： The present invention relates to a polypropylene nanocomposite comprising (a) about 1 wt % to about 40 wt % of an acid- or acid anhydride-modified polypropylene; (b) about 0.1 wt % to about 50 wt % of an organically modified layered silicate; and (c) about 30 wt % to about 90 wt % of a nonpolar polypropylene, wherein the acid- or anhydride-modified polypropylene has a molecular weight that is lower than that of the nonpolar polypropylene, and wherein the polypropylene nanocomposite has a linear thermal expansion coefficient ranging from about 4×10−5/° C. to about 9×10−5/° C. The density and linear thermal expansion coefficient of these nanocomposites are, respectively, 10% to 20% and 20% to 40% less than conventional polypropylene composites and can be used to form durable molded products with superior dimensional stability, good tensile strength, good moldability, and high thermal resistance.

    摘要翻译： 本发明涉及一种聚丙烯纳米复合材料，其包含（a）约1重量％至约40重量％的酸或酸酐改性的聚丙烯; （b）约0.1重量％至约50重量％的有机改性层状硅酸盐; 和（c）约30重量％至约90重量％的非极性聚丙烯，其中所述酸或酸酐改性的聚丙烯的分子量低于非极性聚丙烯的分子量，并且其中所述聚丙烯纳米复合材料具有线性热 膨胀系数范围为约4×10 -5 /℃至约9×10 -5 /℃。这些纳米复合材料的密度和线性热膨胀系数分别为10 比常规聚丙烯复合材料低20％至20％至40％，可用于形成具有优异的尺寸稳定性，良好的拉伸强度，良好的成型性和高耐热性的耐用的模制产品。

    Polypropylene resin compositions
    4.
    发明授权
    Polypropylene resin compositions 有权
    聚丙烯树脂组合物

    公开(公告)号：US6133374A

    公开(公告)日：2000-10-17

    申请号：US218272

    申请日：1998-12-21

    申请人： Byeong-Uk Nam ,  Young-Keun Lee ,  Tae-Hee Lee ,  Kyu-Jong Lee

    发明人： Byeong-Uk Nam ,  Young-Keun Lee ,  Tae-Hee Lee ,  Kyu-Jong Lee

    IPC分类号： C08L23/08 ,  C08L23/10 ,  C08L23/16 ,  C08L23/26 ,  C08L51/06 ,  C08L71/02 ,  C08G63/91

    CPC分类号： C08L23/10 ,  C08L23/16 ,  C08L51/06 ,  C08L71/02

    摘要： A polypropylene resin composition comprises (1) 40 to 99% by weight of a polypropylene resin; (2) 1 to 60% by weight of an ethylene/alpha-olefin copolymer elastomer; (3) 20 to 50 parts by weight of a low molecular weight polypropylene resin modified with unsaturated carboxylic acid or its anhydride, and (4) 0.1 to 20 parts by weight of an epoxy resin represented by the following chemical formula I: ##STR1## wherein n is an integer of 1 to 4 and A is a multivalent group having a bond number of n and is selected from bisphenol A-type ethers, propylene oxide-type ethers and ethylene oxide-type ethers, the components (3) and (4) being based on 100 parts by weight of the components (1) and (2) in total. The composition is suited for polypropylene materials to be painted, such as automobile bumpers, by virtue of its superior paint adhesion even under the condition of no pretreatments.

    摘要翻译： 聚丙烯树脂组合物包含（1）40至99重量％的聚丙烯树脂; （2）1〜60重量％的乙烯/α-烯烃共聚物弹性体; （3）20〜50重量份用不饱和羧酸或其酸酐改性的低分子量聚丙烯树脂，和（4）0.1〜20重量份由下列化学式I表示的环氧树脂：其中n为 A为1〜4的整数，A为键数n的多价基团，选自双酚A型醚，环氧丙烷型醚类和环氧乙烷型醚类，成分（3）和（4）为 基于100重量份的组分（1）和（2）。 该组合物适用于待涂漆的聚丙烯材料，例如汽车保险杠，由于其甚至在无预处理的条件下，其优异的油漆附着力。