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:
Jan. 03, 2012
Filed:
Apr. 21, 2009
Guey-sheng Liou, Hsinchu, TW;
Cha-wen Chang, Hsinchu, TW;
Hung-ju Yen, Hsinchu, TW;
Jing-pin Pan, Hsinchu, TW;
Chang-rung Yang, Hsinchu, TW;
Tsung-hsiung Wang, Hsinchu, TW;
Jung-mu Hsu, Hsinchu, TW;
Guey-Sheng Liou, Hsinchu, TW;
Cha-Wen Chang, Hsinchu, TW;
Hung-Ju Yen, Hsinchu, TW;
Jing-Pin Pan, Hsinchu, TW;
Chang-Rung Yang, Hsinchu, TW;
Tsung-Hsiung Wang, Hsinchu, TW;
Jung-Mu Hsu, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
Provided is a pentaaryldiamine-containing bismaleimide compound of Formula (I): wherein Arto Arare independently C-Caryl; and Arand Arare optionally substituted by one or more substitutent(s) selected from the group consisting of C-Calkyl, C-Calkoxy, and cyano. The compound of Formula (I) is obtained by a method including the steps of reacting a diamine with maleic anhydride in a solvent to form an amic acid, and cyclodehydrating the amic acid in the presence of a catalyst and a dehydrating agent. The compound of Formula (I) has a nonlinear and asymmetric structure, is amorphous, and is readily soluble in a variety of organic solvents so that the toughness of the product made there from can be improved and processing of the compound can be simplified.