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. 23, 2017
Filed:
May. 16, 2014
Applicant:
Kolon Industries, Inc., Gwacheon-si, Gyeonggi-do, KR;
Inventors:
Hyo Jun Park, Yongin-si, KR;
Hak Gee Jung, Yongin-si, KR;
Chang Sik Ha, Busan, KR;
Pradip Kumar Tapaswi, Busan, KR;
Young Sik Jeong, Ulsan, KR;
Assignee:
KOLON INDUSTRIES, INC., Gwacheon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/60 (2006.01); C08K 5/34 (2006.01); C08L 79/04 (2006.01); C08G 73/06 (2006.01); C08G 73/10 (2006.01); C08L 79/08 (2006.01); C07D 213/81 (2006.01); C07D 401/04 (2006.01); C07D 295/15 (2006.01);
U.S. Cl.
CPC ...
C07D 307/60 (2013.01); C08G 73/0633 (2013.01); C08G 73/1007 (2013.01); C08G 73/1028 (2013.01); C08G 73/1075 (2013.01); C08G 73/1085 (2013.01); C08K 5/34 (2013.01); C08L 79/04 (2013.01); C08L 79/08 (2013.01); C07D 213/81 (2013.01); C07D 295/15 (2013.01); C07D 401/04 (2013.01);
Abstract
The present invention relates to a novel acid dianhydride, a method for preparing the same, and a polyimide prepared therefrom. More specifically, the acid dianhydride according to the present invention is useful as a colorless transparent polyimide unit exhibiting excellent thermal stability and a low dielectric ratio, and the polyimide of the present invention has excellent solubility to an organic solvent compared with the conventional polyimide.