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. 12, 2018
Filed:
Dec. 16, 2016
Applicant:
Industrial Technology Research Institute, Hsinchu, TW;
Inventors:
Po-Hsien Ho, Taipei, TW;
Chih-Hsiang Lin, Taipei, TW;
Meng-Hsin Chen, Pingtung County, TW;
Cheng-Hsing Fan, Tainan, TW;
Hsin-Ching Kao, Hsinchu, TW;
Yih-Her Chang, Hsinchu County, TW;
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/00 (2006.01); C08G 75/025 (2016.01); C08G 75/0227 (2016.01); C08G 75/02 (2016.01); C08G 75/0204 (2016.01); C07C 319/14 (2006.01); C07C 381/12 (2006.01);
U.S. Cl.
CPC ...
C08G 75/025 (2013.01); C07C 319/14 (2013.01); C07C 381/12 (2013.01); C08G 75/02 (2013.01); C08G 75/0204 (2013.01); C08G 75/0227 (2013.01);
Abstract
A method for preparing a polyarylene sulfide includes reacting a methyl 4-(arylthio)aryl sulfoxide compound with sulfuric acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid or trifluoromethanesulfonic acid to obtain a polysulfonium intermediate; and demethylating the polysulfonium intermediate to obtain a polyarylene sulfide, wherein the polysulfonium intermediate is demethylated with aqueous HCl, HBr, or HI.