- Patent Title: Layered porous film, and non-aqueous electrolyte secondary battery
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Application No.: US15788348Application Date: 2017-10-19
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Publication No.: US10944088B2Publication Date: 2021-03-09
- Inventor: Junji Suzuki
- Applicant: Sumitomo Chemical Company, Limited
- Applicant Address: JP Tokyo
- Assignee: Sumitomo Chemical Company, Limited
- Current Assignee: Sumitomo Chemical Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: JP2014-080029 20140409
- Main IPC: H01M2/16
- IPC: H01M2/16 ; B32B27/32 ; B32B5/18 ; B32B19/02 ; B32B5/16 ; B32B27/14 ; H01M10/0525 ; H01M10/052

Abstract:
A laminated porous film includes a porous base material layer containing polyolefin as a main component; a filler layer containing inorganic particles as a main component; and a resin layer containing resin particles as a main component, the resin particles showing an endothermic curve satisfying conditions (1) and (2) below, the endothermic curve being obtained by differential scanning calorimetry. Condition (1): a temperature at which DDSC is not less than 0.10 mW/min/mg is not less than 70° C. Condition (2): endothermic amount calculated from an area of the endothermic curve in a range of not less than 50° C. and not more than 70° C. is not less than −20.0 J/g.
Public/Granted literature
- US20180040870A1 LAYERED POROUS FILM, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Public/Granted day:2018-02-08
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