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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9758623 B1

PDFFull Text
Date of Patent:
Sep. 12, 2017

Filed:

Aug. 07, 2015

Polyimide precursor and polyimide

Applicant:

Ube Industries, Ltd., Ube-shi, JP;

Inventors:

Ryoichi Takasawa, Ube, JP;

Takuya Oka, Ube, JP;

Yukinori Kohama, Ube, JP;

Miharu Nakagawa, Ube, JP;

Keiji Iwamoto, Ube, JP;

Kenji Hirotsu, Ube, JP;

Yoshiyuki Watanabe, Ube, JP;

Assignee:

UBE INDUSTRIES, LTD., Ube-Shi, JP;

Attorney:

Knobbe Martens Olson & Bear LLP

Primary Examiner:

Edward Cain

Int. Cl.
CPC ...
C09D 179/08 (2006.01); C08G 73/10 (2006.01); H01M 14/00 (2006.01); C08G 73/14 (2006.01); C08G 69/00 (2006.01); C08G 73/06 (2006.01); H01L 31/0392 (2006.01); B05D 1/30 (2006.01); B05D 3/02 (2006.01); B05D 3/04 (2006.01); B29C 39/02 (2006.01); B29C 39/22 (2006.01); C08J 5/18 (2006.01); B29K 79/00 (2006.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1085 (2013.01); B05D 1/30 (2013.01); B05D 3/0254 (2013.01); B05D 3/0413 (2013.01); B29C 39/02 (2013.01); B29C 39/22 (2013.01); C08G 69/00 (2013.01); C08G 73/0644 (2013.01); C08G 73/1078 (2013.01); C08G 73/14 (2013.01); C08J 5/18 (2013.01); C09D 179/08 (2013.01); H01L 31/03926 (2013.01); H01M 14/005 (2013.01); B29K 2079/08 (2013.01); B29K 2995/0012 (2013.01); B29K 2995/0016 (2013.01); B29K 2995/0026 (2013.01); B29K 2995/0037 (2013.01); B29K 2995/0082 (2013.01); B29L 2031/34 (2013.01); C08J 2379/08 (2013.01); Y02E 10/50 (2013.01);
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 Xand Xare each independently hydrogen, a Calkyl group or a Calkylsilyl group.

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