发明公开
EP0447042A3 Stretched article having pearly gloss and process for preparing same 失效
具有梨皮的拉伸物品及其制备方法

  • 专利标题: Stretched article having pearly gloss and process for preparing same
  • 专利标题(中): 具有梨皮的拉伸物品及其制备方法
  • 申请号: EP91301338.9
    申请日: 1991-02-20
  • 公开(公告)号: EP0447042A3
    公开(公告)日: 1992-03-18
  • 发明人: Ishibashi, Tadao
  • 申请人: Chisso Corporation
  • 申请人地址: 6-32, Nakanoshima 3-chome Kita-ku Osaka-shi Osaka-fu JP
  • 专利权人: Chisso Corporation
  • 当前专利权人: Chisso Corporation
  • 当前专利权人地址: 6-32, Nakanoshima 3-chome Kita-ku Osaka-shi Osaka-fu JP
  • 代理机构: Lamb, John Baxter
  • 优先权: JP37279/90 19900220
  • 主分类号: C08L23/12
  • IPC分类号: C08L23/12 C08J5/18
Stretched article having pearly gloss and process for preparing same
摘要:
A stretched article having a pearly gloss and a total light transmission of 40% or less is obtained by molding a composition comprising 100 parts by weight of a crystalline polypropylene, 0.5 to 30 parts by weight of a high-density polyethylene having a density of 0.94 or more and 5 to 50 parts by weight of a cyclopentadiene petroleum resin having a softening point (according to the ring and ball method) of 160°C or more, and then stretching the resulting molded article. A process for producing a stretched article having a pearly gloss comprises the steps of melt-extruding the above composition at a temperature at or above the softening point of the petroleum resin, cooling the extruded composition to form an unstretched raw material, and then stretching the raw material 200% or more in at least one direction at a temperature which is below the crystalline melting point of the polypropylene and is at or below the softening point of the petroleum resin.
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