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. 30, 2022
Filed:
Jul. 04, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Jeongbin Lee, Daejeon, KR;
Joong Jin Han, Daejeon, KR;
Eunju Park, Daejeon, KR;
Sanghwan Jo, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/0281 (2016.01); C08G 75/0236 (2016.01); C08G 75/0254 (2016.01);
U.S. Cl.
CPC ...
C08G 75/0281 (2013.01); C08G 75/0236 (2013.01); C08G 75/0254 (2013.01);
Abstract
A preparation method of a polyarylene sulfide that may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method with a high molecular weight at a high yield by optimizing the content and molar ratio of an amide-based compound in a polymerization step.