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:
Aug. 16, 2016
Filed:
May. 27, 2015
Applicant:
Industrial Technology Research Institute, Hsinchu, TW;
Inventors:
Wei-Hong Chen, Zhubei, TW;
Po-Jen Yang, Taichung, TW;
Chih-Hsiang Lin, Taipei, TW;
Meng-Hsin Chen, Xinpi Township, TW;
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/16 (2006.01); C08G 73/10 (2006.01); C07D 307/89 (2006.01); C07D 407/14 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1071 (2013.01); C07D 307/89 (2013.01); C07D 407/14 (2013.01); C08G 73/1085 (2013.01); C08G 73/16 (2013.01);
Abstract
A dianhydride and a polyimide formed by the same are provided. The dianhydride has a chemical structure represented below: wherein Ar is a fluorene-containing group. The dianhydride can be polymerized with a diamine to form a polyimide with a repeating unit of a chemical formula: wherein Ar is the fluorene-containing group, and n is a positive integer from 1 to 5. The polyimide simultaneously has excellent thermal stability and hot workability, and can therefore be applied in several industries.