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:
Mar. 01, 2022
Filed:
Jul. 31, 2017
Applicant:
Kaneka Corporation, Osaka, JP;
Inventor:
Mari Uno, Otsu, JP;
Assignee:
KANEKA CORPORATION, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/28 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
B32B 27/281 (2013.01); C08G 73/1039 (2013.01); C08G 73/1042 (2013.01); B32B 2307/412 (2013.01); B32B 2457/20 (2013.01); Y10T 428/31721 (2015.04);
Abstract
A polyamide acid of the present invention contains, as a diamine component, 2,2-bistrifluoromethylbenzidine and trans-1,4-cyclohexanediamine, and contains, as a tetracarboxylic acid dianhydride component, a pyromellitic acid anhydride and a 3,3,4,4-biphenyltetracarboxylic acid dianhydride. A ratio of the trans-1,4-cyclohexanediamine to a total amount of the diamine is preferably 0.5-40 mol %. A polyimide is obtained by dehydration ring closure of the polyamide acid.
Quick Actions:
Uno, Mari. (2022). Polyamide acid, polyamide acid solution, polyimide, polyimide film, laminate, flexible device, and method of manufacturing polyimide film (U.S. Patent No. 11260636). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11260636
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