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:
Aug. 16, 2022
Filed:
Jul. 03, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Kwonsu Jung, Daejeon, KR;
Joong Jin Han, Daejeon, KR;
Eunju Park, Daejeon, KR;
Hyun Woog Ryu, Daejeon, KR;
Hansol Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/0259 (2016.01); C08G 75/0213 (2016.01); C08G 75/0254 (2016.01); C08G 75/0281 (2016.01);
U.S. Cl.
CPC ...
C08G 75/0259 (2013.01); C08G 75/0213 (2013.01); C08G 75/0254 (2013.01); C08G 75/0281 (2013.01);
Abstract
The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by using a dihalogenated aromatic compound in a predetermined equivalent ratio with respect to a sulfur compound and performing both dehydration and polymerization under optimum conditions.