基本信息:
- 专利标题： Resin composition for porous film and film prepared therefrom
- 专利标题（中）：用于多孔膜的树脂组合物和其制备的膜
- 申请号：EP86117251 申请日：1986-12-11
- 公开(公告)号：EP0226179A3 公开(公告)日：1988-06-15
- 发明人： Matsumura, Shuji , Ito, Michiyasu , Tsuji, Syoichi , Suzuki, Hisatosi , Ito, Syoichi
- 申请人： MITSUI TOATSU CHEMICALS, Inc.
- 专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 优先权： JP27669285 19851211
- 主分类号： C08J05/18
- IPC分类号： C08J05/18 ; C08K03/30
摘要：
A porous film having a good water vapor permeability is obtained with a high productivity by melting a resin composition comprising 100 parts by weight of a polyolefin resin and 50 to 500 parts by weight of barium sulfate having an electric conductivity of 250 pS cm or less in terms of the electric conductivity of a supernatant formed when the barium sulfate is added to water, and a particle size of 0.1 to 7 µm, forming the melt into a film and stretching the film to 2.5 to 14 times the original area at least in the uniaxial direction.