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:
Feb. 12, 2013
Filed:
Mar. 18, 2011
Xiang-ming He, Beijing, CN;
LI Wang, Beijing, CN;
Wei-hua Pu, Beijing, CN;
Wen-ting Sun, Beijing, CN;
Jian-jun LI, Beijing, CN;
Xiang-Ming He, Beijing, CN;
Li Wang, Beijing, CN;
Wei-Hua Pu, Beijing, CN;
Wen-Ting Sun, Beijing, CN;
Jian-Jun Li, Beijing, CN;
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
In a method for making sulfurized polyacrylonitrile, polyacrylonitrile, a first solvent, a catalyst, and sulfur or sodium thiosulfate are provided. The polyacrylonitrile is dissolved in the first solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed in the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a first conjugated polymer solution with a conjugated polymer. The sulfur or sodium thiosulfate is uniformly mixed with the conjugated polymer to form a mixture. The mixture is heated to form sulfurized polyacrylonitrile.