发明名称 |
POROUS POLYPROPYLENE FILM |
摘要 |
In order to provide a porous polypropylene film in which the ratio of change in air permeability is small and the initial air-permeating property is satisfactory even under high temperature environment, a porous polypropylene film is proposed, satisfying the following conditions (1) and (2) regarding air-permeability (Pa 1 ) at 20°C and air-permeability (Pa 2 ) after heating at 95°C for one hour:
(1) The Pa 1 is 800 seconds/100 ml or less
(2) The ratio of change in air permeability calculated by the formula below is 120% or less |
申请公布号 |
KR20120114343(A) |
申请公布日期 |
2012.10.16 |
申请号 |
KR20127020761 |
申请日期 |
2011.03.17 |
申请人 |
MITSUBISHI PLASTICS, INC. |
发明人 |
YAMADA TAKEYOSHI;YAMAMOTO MIHO;USAMI YASUSHI |
分类号 |
C08J9/00;C08J5/22;H01M2/16;H01M10/0525 |
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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