Invention Grant
- Patent Title: Polyimide precursor and polyimide
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Application No.: US14402553Application Date: 2013-03-15
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Publication No.: US10781288B2Publication Date: 2020-09-22
- Inventor: Takuya Oka , Yukinori Kohama , Yoshiyuki Watanabe , Nobuharu Hisano
- Applicant: Ube Industries, Ltd.
- Applicant Address: JP Ube-Shi
- Assignee: Ube Industries, Ltd.
- Current Assignee: Ube Industries, Ltd.
- Current Assignee Address: JP Ube-Shi
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@66cb3695
- International Application: PCT/JP2013/057563 WO 20130315
- International Announcement: WO2013/179727 WO 20131205
- Main IPC: C07D407/08
- IPC: C07D407/08 ; C08G73/10 ; C09D179/08 ; C08G73/14 ; C08J5/18 ; C08G73/16 ; C07C69/757 ; C07C235/82

Abstract:
A polyimide precursor including at least one repeating unit represented by the following chemical formula (1): in which A is an arylene group; and X1 and X2 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, and a polyimide obtained from the polyimide precursor has a coefficient of linear thermal expansion from 50° C. to 400° C. of 100 ppm/K or less.
Public/Granted literature
- US20150158980A1 POLYIMIDE PRECURSOR AND POLYIMIDE Public/Granted day:2015-06-11
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