{
  "$type": "site.standard.document",
  "description": "There is provided a laminated microporous film having an excellent balance between air permeability and film rupture temperature obtained by laminating a first microporous layer comprising a first resin composition and a second microporous layer comprising a second resin composition having a lower…",
  "path": "/patents/1013932",
  "publishedAt": "2011-04-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B32B27/08",
    "ASAHI KASEI E MATERIALS CORP [JP]"
  ],
  "textContent": "There is provided a laminated microporous film having an excellent balance between air permeability and film rupture temperature obtained by laminating a first microporous layer comprising a first resin composition and a second microporous layer comprising a second resin composition having a lower melting point than the first resin composition, wherein the first microporous layer has a melt viscosity ηof 10,000 Pa·s or higher, and a ratio η/ηof the melt viscosity ηto a melt viscosity ηof the second microporous layer is 0.01 to 10.",
  "title": "MULTILAYER MICROPOROUS MEMBRANE, METHOD FOR PRODUCING SAME AND BATTERY SEPARATOR"
}