| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fine porous film having a high film rupture temperature and good balance between porosity and air permeability. <P>SOLUTION: The fine porous film comprises a thermoplastic resin composition containing (a) 100 pts.mass of a polyethylene resin and (b) 5-90 pts.mass of a polyphenylene ether-based resin. The fine porous film has a sea-island structure in which the polyethylene resin is the sea part and the polyphenylene ether-based resin is the island part and has an air permeability of 10 to 5,000 s/100 cc. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
