发明名称 |
Resin compostion for porous film and film prepared therefrom |
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 mu S/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 mu m, making the melt into a film and stretching the film to 2.5 to 14 times the original area at least in the uniaxial direction.
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申请公布号 |
US4699733(A) |
申请公布日期 |
1987.10.13 |
申请号 |
US19860940377 |
申请日期 |
1986.12.11 |
申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
MATSUMURA, SHUJI;ITO, MICHIYASU;TSUJI, SYOICHI;SUZUKI, HISATOSI;ITO, SYOICHI |
分类号 |
C08J9/00;C08J5/18;C08K3/30;C08K3/32;C08L7/00;C08L21/00;C08L23/00;C08L23/02;C08L23/04;C08L33/00;C08L33/02;C08L101/00;(IPC1-7):H01B1/06 |
主分类号 |
C08J9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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