Invention Grant
- Patent Title: Polyimide precursor solution, porous polyimide film, separator for secondary battery, and secondary battery
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Application No.: US17577358Application Date: 2022-01-17
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Publication No.: US12247103B2Publication Date: 2025-03-11
- Inventor: Kosaku Yoshimura , Yasunobu Kashima , Takahiro Ishizuka
- Applicant: FUJIFILM Business Innovation Corp.
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JP2021-145585 20210907
- Main IPC: C08G73/10
- IPC: C08G73/10 ; B29C67/20 ; H01M50/403 ; H01M50/414 ; H01M50/491 ; B29K79/00 ; B29K105/00
Abstract:
A polyimide precursor solution includes a polyimide precursor having a glass transition temperature Tg of equal to or higher than 300° C. after imidization, an aqueous solvent containing water, an organic amine compound, and resin particles having a volume average particle size of equal to or less than 100 nm.
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