公开(公告)号：EP0926195A1

公开(公告)日：1999-06-30

申请号：EP98124590.5

申请日：1998-12-23

申请人： Japan Polychem Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Iwanami, Kunio, c/o Japan Polychem Corp. ,  Kobayashi, Akira, c/o Japan Polychem Corp. ,  Murayama, Mitsuhiro, c/o Japan Polychem Corp. ,  Fujita, Yuji, c/o Japan Polychem Corp. ,  Nagai, Takayuki ,  Nomura, Takao ,  Matsuda, Masatoshi ,  Kito, Osamu ,  Iwai, Hisayuki

IPC分类号： C08L53/02 ,  C08L53/00 ,  C08K3/34

CPC分类号： C08L53/00 ,  C08L53/02 ,  C08L53/025 ,  C08L2666/24

摘要： This invention provides polypropylene resin compositions exhibiting a strongly improved balance of physical properties in comparison to related polypropylene materials. The materials can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can effectively reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specific ethylene-propylene block copolymer, (B) a specific thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.

摘要翻译： 与有关的聚丙烯材料相比，本发明提供了聚丙烯树脂组合物，其物理性能的平衡显着改善。 该材料可用于汽车内外部件，具有优异的薄壁成型性，可有效减少流痕的产生。 特别是提供含有特定量的（A）特定的乙烯 - 丙烯嵌段共聚物，（B）特定的热塑性弹性体和（C）滑石的聚丙烯树脂组合物，其特征在于， 根据通过注射成型制备的ASTM 1号哑铃的中心区域的广角X射线衍射测量的差分峰值强度的比率计算720或更高的b轴取向度。