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Patent Searching and Data


Title:
POLYOLEFIN COMPOSITE POROUS FILM, METHOD FOR PRODUCING SAME, BATTERY SEPARATOR, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/093184
Kind Code:
A1
Abstract:
Provided is a polyolefin composite porous film that makes it possible to improve impact resistance in addition to improving battery characteristics such as external short circuit resistance and high-temperature heat resistance in recent battery designs having high energy density. The polyolefin composite porous film comprises: a first layer containing polypropylene (A), a first high-density polyethylene (B) having a melting point of 130°C or more, and a second high-density polyethylene (C) having a melting point of 120°C or more and less than 130°C; and a second layer containing polyethylene (D). The first layer and the second layer are laminated together in an integrated manner.

Inventors:
NAKAJIMA KONOMI (JP)
HARUMOTO KOSUKE (JP)
MATSUSHITA KATSUHIKO (JP)
LI DAN (JP)
Application Number:
PCT/JP2018/040199
Publication Date:
May 16, 2019
Filing Date:
October 29, 2018
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B27/32; B32B5/18; C08J9/26; H01M50/406; H01M50/417; H01M50/449; H01M50/489; H01M50/491
Domestic Patent References:
WO2015194667A12015-12-23
WO2015190264A12015-12-17
WO2014065331A12014-05-01
WO2015194667A12015-12-23
WO2006137540A12006-12-28
Foreign References:
JP2012521914A2012-09-20
JP2010537845A2010-12-09
JP2012089346A2012-05-10
JP2012522354A2012-09-20
JPS4931163B11974-08-20
JP4280371B22009-06-17
JPS522949B11977-01-25
JP4641706B22011-03-02
JP5046640B22012-10-10
JPH02132327A1990-05-21
JP3347835B22002-11-20
JP3347854B22002-11-20
JP2002256099A2002-09-11
JP2017215259A2017-12-07
Other References:
See also references of EP 3708363A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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