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:
May. 23, 2023
Filed:
Oct. 30, 2018
Lg Chem, Ltd., Seoul, KR;
Kyoung Hwan Oh, Daejeon, KR;
Hee Jung Jeon, Daejeon, KR;
Su Hwa Kim, Daejeon, KR;
Jeong Heon Ahn, Daejeon, KR;
Jin Sook Ryu, Daejeon, KR;
Suk Youn Kang, Daejeon, KR;
Abstract
A method for preparing a catalyst for use in polymerizing a conjugated diene-based monomer, the catalyst, and a method for preparing a conjugated diene-based polymer using the same are disclosed herein. In an embodiment, a method of preparing a catalyst comprises mixing a lanthanide rare earth element-containing compound, an alkylating agent compound and a halogen compound in the presence of a solvent to prepare a catalyst composition, adding a conjugated diene-based monomer to the catalyst composition to form a preformed catalyst composition, and aging the preformed catalyst composition at a temperature of −1° C. to −15° C. for 3 hours to 98 hours to prepare the catalyst. The catalyst has excellent catalyst activity and polymerization reactivity and is useful for preparing a conjugated diene-based polymer which has an excellent modification ratio and improved compounding properties.