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:
Jun. 30, 2020
Filed:
Aug. 15, 2019
Applicant:
Eternal Materials Co., Ltd., Kaohsiung, TW;
Inventors:
Chung-Jen Wu, Kaohsiung, TW;
Meng-Yen Chou, Kaohsiung, TW;
Chang-Hong Ho, Kaohsiung, TW;
Shun-Jen Ghiang, Kaohsiung, TW;
Po-Yu Huang, Kaohsiung, TW;
Chung-Kai Cheng, Kaohsiung, TW;
Assignee:
ETERNAL MATERIALS CO., LTD., Kaohsiung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08G 61/04 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1025 (2013.01);
Abstract
The present invention provides a process for preparing polyimides. The process includes cyclizing a polyimide precursor composition in a vacuum-like environment by using infrared radiation to give polyimide. The process can effectively reduce the cyclization temperature and time, thereby reducing energy and process costs.