{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "It is an object of the present invention to provide a microporous polyolefin membrane, high in pin puncture strength, adequate in pore diameter and high in porosity, comprising (A) an ultra-high-molecular-weight polyolefin having a weight-average molecular weight of 5 × 10 or more, or (B) a…",
  "path": "/patents/1113192",
  "publishedAt": "2001-05-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D71/261",
    "TONEN SEKIYUKAGAKU KK [JP]"
  ],
  "textContent": "It is an object of the present invention to provide a microporous polyolefin membrane, high in pin puncture strength, adequate in pore diameter and high in porosity, comprising (A) an ultra-high-molecular-weight polyolefin having a weight-average molecular weight of 5 × 10 or more, or (B) a composition containing an ultra-high-molecular-weight polyolefin having a weight-average molecular weight of 5 × 10 or more, and having a porosity of 30 to 95%, bubble point exceeding 980 KPa and pin puncture strength of 4,900 mN/25 µm or more.",
  "title": "POLYOLEFIN MICROPOROUS FILM AND METHOD FOR PREPARING THE SAME"
}