Invention Grant
- Patent Title: Polyolefin micro-porous film, separator film for power-storage device, and power-storage device
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Application No.: US16076248Application Date: 2017-02-07
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Publication No.: US11139533B2Publication Date: 2021-10-05
- Inventor: Toru Kidosaki , Ryo Sakimoto , Kenji Kawabata
- Applicant: UBE INDUSTRIES, LTD.
- Applicant Address: JP Ube
- Assignee: UBE INDUSTRIES, LTD.
- Current Assignee: UBE INDUSTRIES, LTD.
- Current Assignee Address: JP Ube
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: JPJP2016-022797 20160209,JPJP2016-222366 20161115
- International Application: PCT/JP2017/004356 WO 20170207
- International Announcement: WO2017/138512 WO 20170817
- Main IPC: H01M50/411
- IPC: H01M50/411 ; H01M50/449 ; H01M50/491 ; H01M50/417 ; H01M50/457 ; H01G11/52 ; H01G11/06 ; B32B7/027 ; B32B27/08 ; B32B27/32 ; C08J5/18 ; H01M10/0525 ; H01M50/446
Abstract:
A polyolefin micro-porous film containing a polypropylene resin, in which a meltdown temperature of the polyolefin micro-porous film is 195° C. to 230° C. A weight-average molecular weight of the polypropylene resin is 500,000 to 800,000. Furthermore, a molecular weight distribution of the polypropylene resin is 7.5 to 16.
Public/Granted literature
- US20190157647A1 POLYOLEFIN MICRO-POROUS FILM, SEPARATOR FILM FOR POWER-STORAGE DEVICE, AND POWER-STORAGE DEVICE Public/Granted day:2019-05-23
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