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:
May. 07, 2019
Filed:
Dec. 27, 2013
Eternal Materials Co., Ltd., Kaoshing, TW;
Meng-Yen Chou, Kaohsiung, TW;
Chung-Jen Wu, Kaohsiung, TW;
Eternal Materials Co., Ltd., Kaohsiung, TW;
Abstract
A polyimide (PI) having two —COOH capping groups at each end is provided. A coating composition is further provided, which contains the PI and a hardening agent having 2 to 6 functional groups capable of reacting with —COOH. A PI coating layer and PI film formed by the coating composition of the present invention possess excellent chemical resistance and coefficient of thermal expansion (CTE), which makes them applicable in fabrication of protective materials for active/passive devices, optical materials, touch panels, copper foil substrates, soft flexible electronic materials or integrated circuit elements, or film substrate for glass film touch panels.