发明授权
US06515037B2 Polypropylene base resin composition for foam-molding, foamed article using the same composition, production process for the same foamed article and foam-molded product using the foamed-article
失效
用于发泡成型的聚丙烯基树脂组合物，使用相同组成的发泡制品，使用发泡制品的相同发泡制品的生产方法和发泡成型产品
- 专利标题： Polypropylene base resin composition for foam-molding, foamed article using the same composition, production process for the same foamed article and foam-molded product using the foamed-article
- 专利标题（中）： 用于发泡成型的聚丙烯基树脂组合物，使用相同组成的发泡制品，使用发泡制品的相同发泡制品的生产方法和发泡成型产品
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申请号： US09784025申请日： 2001-02-16
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公开(公告)号： US06515037B2公开(公告)日： 2003-02-04
- 发明人: Mototake Tsutsui , Hiroyuki Maehara , Kouichi Hatada , Tsutomu Ushioda
- 申请人： Mototake Tsutsui , Hiroyuki Maehara , Kouichi Hatada , Tsutomu Ushioda
- 优先权： JP2000-053896 20000229; JP2000-088926 20000328
- 主分类号： C08J900
- IPC分类号： C08J900
摘要：
A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.