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:
Sep. 03, 2024
Filed:
Sep. 28, 2020
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Kyung Min Min, Daejeon, KR;
Seung Young Park, Daejeon, KR;
Sung Kyoung Kim, Daejeon, KR;
Sang Cheol Shin, Daejeon, KR;
Won Seok Kim, Daejeon, KR;
Won Hee Woo, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 31/12 (2006.01); C08F 6/02 (2006.01); C08G 64/40 (2006.01);
U.S. Cl.
CPC ...
B01J 31/12 (2013.01); C08F 6/02 (2013.01); C08G 64/40 (2013.01);
Abstract
The present disclosure relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present disclosure includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.