Invention Grant
- Patent Title: Method for producing carboxylic acid anhydride, method for producing carboxylic imide, and method for manufacturing electrophotographic photosensitive member
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Application No.: US15189827Application Date: 2016-06-22
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Publication No.: US10065969B2Publication Date: 2018-09-04
- Inventor: Kei Tagami , Akihito Saitoh , Kunihiko Sekido , Michiyo Sekiya , Masashi Nishi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2015-128152 20150625
- Main IPC: G03G5/06
- IPC: G03G5/06 ; C07D493/06 ; C07D471/06 ; C07D307/83 ; C07D487/06 ; G03G5/14
Abstract:
A method for producing a carboxylic acid anhydride includes heating a composition containing a specific compound in a solvent to yield the carboxylic acid anhydride. The solvent is an aprotic polar solvent having a boiling point of 50° C. or more.
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