Invention Grant
- Patent Title: Polyimide precursor and polyimide
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Application No.: US14821380Application Date: 2015-08-07
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Publication No.: US09758623B2Publication Date: 2017-09-12
- Inventor: Ryoichi Takasawa , Takuya Oka , Yukinori Kohama , Miharu Nakagawa , Keiji Iwamoto , Kenji Hirotsu , Yoshiyuki Watanabe
- 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: JP2011-054845 20110311; JP2011-079396 20110331; JP2012-010529 20120120; JP2012-010540 20120120
- Main IPC: C09D179/08
- IPC: C09D179/08 ; C08G73/10 ; H01M14/00 ; C08G73/14 ; C08G69/00 ; C08G73/06 ; H01L31/0392 ; B05D1/30 ; B05D3/02 ; B05D3/04 ; B29C39/02 ; B29C39/22 ; C08J5/18 ; B29K79/00 ; B29L31/34

Abstract:
The present invention relates to a polyimide precursor comprising a repeating unit represented by the following chemical formula (1): wherein A is a tetravalent group having at least one aliphatic six membered ring and no aromatic ring in the chemical structure, and B is a divalent group having at least one amide bond and an aromatic ring in the chemical structure; or A is an aliphatic tetravalent group and B is a divalent group having at least one chemical structure represented by the following chemical formula (2) in the chemical structure: and X1 and X2 are each independently hydrogen, a C1-6 alkyl group or a C3-9 alkylsilyl group.
Public/Granted literature
- US20160032056A1 POLYIMIDE PRECURSOR AND POLYIMIDE Public/Granted day:2016-02-04
Information query
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