{
  "$type": "site.standard.document",
  "description": "A base material for a lithium ion secondary battery separator provided by the present invention comprises a polyethylene terephthalate fiber, in which an average fiber diameter of the polyethylene terephthalate fiber is 9.0 µm or less, a specific X-ray diffraction intensity derived from the…",
  "path": "/patents/966163",
  "publishedAt": "2014-12-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "D21H13/24",
    "MITSUBISHI PAPER MILLS LTD [JP]"
  ],
  "textContent": "A base material for a lithium ion secondary battery separator provided by the present invention comprises a polyethylene terephthalate fiber, in which an average fiber diameter of the polyethylene terephthalate fiber is 9.0 µm or less, a specific X-ray diffraction intensity derived from the polyethylene terephthalate fiber is 300 cps/ (g/m 2 ) or more, and a coefficient of variation of a specific X-ray diffraction intensity is 12.0% or less, and is excellent in the workability during production and excellent in mechanical strength, uniformity and handling in a subsequent treatment step.",
  "title": "BASE FOR LITHIUM ION SECONDARY BATTERY SEPARATORS, METHOD FOR PRODUCING BASE FOR LITHIUM ION SECONDARY BATTERY SEPARATORS, AND LITHIUM ION SECONDARY BATTERY SEPARATOR"
}