- 专利标题: COATING MATERIAL FEEDSTOCK FOR SECONDARY BATTERY SEPARATOR, COATING MATERIAL FOR SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR PRODUCTION METHOD, AND SECONDARY BATTERY
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申请号: EP21788849.4申请日: 2021-04-09
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公开(公告)号: EP4137307A1公开(公告)日: 2023-02-22
- 发明人: TOMITA, Yoshihiko , MATSUMOTO, Tsuyoshi , KAGAWA, Yasuyuki , YOSHIMURA, Toshihiro
- 申请人: Mitsui Chemicals, Inc.
- 申请人地址: JP Tokyo 105-7122 5-2, Higashi-Shimbashi 1-chome Minato-ku
- 代理机构: Hoffmann Eitle
- 优先权: JP2020074278 20200417
- 国际公布: WO2021210499 20211021
- 主分类号: B32B5/18
- IPC分类号: B32B5/18 ; C08F265/04 ; H01M50/403 ; H01M50/42 ; H01M50/423 ; H01M50/434 ; H01M50/443
摘要:
In an ingredient for a secondary cell separator coating material including a core shell particle including a core layer containing a first polymer and a shell layer covering the first polymer and including a second polymer, the first polymer has a repeating unit derived from alkyl (meth)acrylate; the second polymer has a repeating unit derived from (meth)acrylamide of 40 to 97% by mass, and a repeating unit derived from a carboxy group-containing vinyl monomer of 3 to 60% by mass; and a ratio of the second polymer to the first polymer is 4 to 250.
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