发明授权
- 专利标题: Polypropylene film and laminated material thereof
- 专利标题(中): 聚丙烯膜及其层压材料
-
申请号: US11791866申请日: 2005-11-28
-
公开(公告)号: US07732027B2公开(公告)日: 2010-06-08
- 发明人: Yoichi Matsuura , Masanori Takeuchi , Kouji Kataoka , Hiroshi Nozawa
- 申请人: Yoichi Matsuura , Masanori Takeuchi , Kouji Kataoka , Hiroshi Nozawa
- 申请人地址: JP JP
- 专利权人: Toray Advanced Film Co., Ltd.,Sumitomo Chemical Company Limited
- 当前专利权人: Toray Advanced Film Co., Ltd.,Sumitomo Chemical Company Limited
- 当前专利权人地址: JP JP
- 代理机构: DLA Piper LLP (US)
- 优先权: JP2004-343559 20041129
- 国际申请: PCT/JP2005/021761 WO 20051128
- 国际公布: WO2006/057378 WO 20060601
- 主分类号: B29D22/00
- IPC分类号: B29D22/00 ; B32B15/08 ; B32B27/00 ; C08L23/00 ; B65D81/32 ; B65D81/34 ; B65D77/20
摘要:
A polypropylene film comprising 70-90 wt. % polymer (a), 2-10 wt. % polymer (b), 2-10 wt. % polymer (c) and 3-20 wt. % polymer (d) and having a haze of 8-30% (wherein the polymer (a) is a block copolymer prepared by producing a polymer part (component a1) by polymerizing in a first step monomers composed mainly of propylene in the absence of an inert solvent and producing an ethylene/propylene copolymer part (component a2) in a second step by polymerization subsequently carried out in a gas phase; the polymer (b) is an ethylene-based polymer having a density of 0.91-0.97 g/cm3 and a melt flow rate of 5-30 g/10 min; the polymer (c) is an ethylene/α-olefin random copolymer having a density of 0.86-0.90 g/cm3 and a melt flow rate of 0.3-5 g/10 min; and the polymer (d) comprises two or more propylene-based polymers different in molecular weight from each other).
公开/授权文献
- US20080213519A1 Polypropylene Film and Laminated Material Thereof 公开/授权日:2008-09-04
信息查询