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.:
Date of Patent:
Jul. 16, 2019
Filed:
May. 08, 2017
Applicant:
Mitsui Chemicals, Inc., Minato-ku, Tokyo, JP;
Inventors:
Kenichi Fukukawa, Tokyo, JP;
Masaki Okazaki, Chiba, JP;
Yoshihiro Sakata, Ichikawa, JP;
Tatsuhiro Urakami, Ichihara, JP;
Atsushi Okubo, Tokyo, JP;
Assignee:
MITSUI CHEMICALS, INC., Minato-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C08J 5/18 (2006.01); G03F 7/037 (2006.01); H01B 3/30 (2006.01); H05K 1/03 (2006.01); B32B 15/08 (2006.01); B32B 27/28 (2006.01); B32B 15/088 (2006.01); C08L 79/08 (2006.01); C09D 179/08 (2006.01); G03F 7/20 (2006.01); H05K 1/02 (2006.01); G03F 7/11 (2006.01); G03F 7/32 (2006.01); H05K 3/00 (2006.01); H05K 3/28 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1042 (2013.01); B32B 15/08 (2013.01); B32B 15/088 (2013.01); B32B 27/281 (2013.01); C08G 73/10 (2013.01); C08G 73/1082 (2013.01); C08J 5/18 (2013.01); C08L 79/08 (2013.01); C09D 179/08 (2013.01); G03F 7/037 (2013.01); G03F 7/11 (2013.01); G03F 7/20 (2013.01); G03F 7/322 (2013.01); H01B 3/306 (2013.01); H05K 1/0296 (2013.01); H05K 1/0346 (2013.01); H05K 1/0353 (2013.01); H05K 1/0393 (2013.01); H05K 3/0017 (2013.01); B32B 2307/206 (2013.01); B32B 2307/412 (2013.01); B32B 2457/08 (2013.01); B32B 2457/20 (2013.01); B32B 2551/00 (2013.01); C08J 2379/08 (2013.01); H05K 3/281 (2013.01); H05K 2201/0154 (2013.01);
Abstract
Provided are a block polyamide acid imide having an appropriate solubility in aqueous alkaline solutions, and block polyimides that are obtained using same and have high transparency and a low coefficient of linear thermal expansion (low CTE). The block polyimide comprises blocks configured from repeating structural units represented by defined formula (1A) and blocks configured from repeating structural units represented by defined formula (1B).