发明申请
US20140011937A1 POLYPROPYLENE-BASED RESIN COMPOSITION FOR AUTOMOBILE PARTS, AND AUTOMOBILE EXTERIOR PARTS
审中-公开
用于汽车部件的聚丙烯基树脂组合物和汽车外部部件
- 专利标题： POLYPROPYLENE-BASED RESIN COMPOSITION FOR AUTOMOBILE PARTS, AND AUTOMOBILE EXTERIOR PARTS
- 专利标题（中）： 用于汽车部件的聚丙烯基树脂组合物和汽车外部部件
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申请号： US13818634申请日： 2012-03-28
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公开(公告)号： US20140011937A1公开(公告)日： 2014-01-09
- 发明人: Masahiro Nagata , Kenji Masuda , Yoshihiro Banno , Yasushi Okada , Masao Hara , Masaaki Onishi , Chiaki Asano , Kazuhisa To
- 申请人： Masahiro Nagata , Kenji Masuda , Yoshihiro Banno , Yasushi Okada , Masao Hara , Masaaki Onishi , Chiaki Asano , Kazuhisa To
- 申请人地址： JP Hiroshima
- 专利权人： MAZDA MOTOR CORPORATION
- 当前专利权人： MAZDA MOTOR CORPORATION
- 当前专利权人地址： JP Hiroshima
- 优先权： JP2011-071580 20110329
- 国际申请： PCT/JP2012/002138 WO 20120328
- 主分类号： C08L23/14
- IPC分类号： C08L23/14
摘要：
A polypropylene-based resin composition suitable for molding of especially an automobile bumper having good formability, high rigidity, excellent appearance, and high surface impact strength is provided. This composition includes: 30-62 wt. % of a propylene copolymer having an MFR of 40-70 g/10 min.; 5-20 wt. % of a propylene-based block copolymer including a crystalline polypropylene part having a high MFR and a specific ethylene-propylene copolymer part and having an MFR of 100-130 g/10 min; 10-20 wt. % of two types of ethylene-α-olefin copolymer elastomers each having a specific MFR and a specific density; and 23-30 wt. % of talc having a specific particle size.
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