发明申请
- 专利标题: Pre-Expanded Particulate Polypropylene-Based Resin and In-Mold Expansion Molded Article
- 专利标题(中): 预发泡颗粒聚丙烯基树脂和模内膨胀成型品
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申请号: US11791344申请日: 2005-11-18
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公开(公告)号: US20080039588A1公开(公告)日: 2008-02-14
- 发明人: Tetsuya Shibata , Tomonori Iwamoto
- 申请人: Tetsuya Shibata , Tomonori Iwamoto
- 申请人地址: JP Osaka-shi 530-8288
- 专利权人: Kaneka Corporation
- 当前专利权人: Kaneka Corporation
- 当前专利权人地址: JP Osaka-shi 530-8288
- 优先权: JP2004-336835 20041122
- 国际申请: PCT/JP05/21303 WO 20051118
- 主分类号: C08L23/12
- IPC分类号: C08L23/12
摘要:
The present invention provides a pre-expanded particulate polyolefin-based resin capable of easily attaining satisfactory secondary expandability, satisfactory surface appearance, and satisfactory dimensional stability even when it is intended to obtain an in-mold expansion molded article having a thin-wall shape. The present invention provides a pre-expanded particulate polypropylene-based resin including a polypropylene-based resin X as a base resin, where the resin X includes a resin mixture of at least a polypropylene-based resin A having a melting point of 140° C. or lower and a polypropylene-based resin B having a melting point of 145° C. or higher, and the resin mixture is modified by an organic peroxide so as to have a melt index of 5 g/10 min or more and less than 20 g/10 min.