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:
Mar. 15, 2022
Filed:
Sep. 14, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Hansol Kim, Daejeon, KR;
Joong Jin Han, Daejeon, KR;
Eunju Park, Daejeon, KR;
Hyun Woog Ryu, Daejeon, KR;
Kwonsu Jung, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/0259 (2016.01); C08G 75/0281 (2016.01);
U.S. Cl.
CPC ...
C08G 75/0259 (2013.01); C08G 75/0281 (2013.01);
Abstract
According to the present invention, an alkali metal salt such as NaCl which is a major by-product of polyarylene sulfide polymerization may be recycled in the dehydration reaction for the preparation of a sulfur source, thereby providing a method of preparing a polyarylene sulfide with a high yield in an economical manner.