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:
Apr. 20, 2021
Filed:
Dec. 26, 2017
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Suk Joon Yoo, Daejeon, KR;
Sung Ho Park, Daejeon, KR;
Soo Young Choi, Daejeon, KR;
Jeong Heon Ahn, Daejeon, KR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08F 136/00 (2006.01); C08F 136/04 (2006.01); C08F 4/52 (2006.01); C08F 136/06 (2006.01); C08F 4/54 (2006.01); C08F 236/04 (2006.01); C08F 36/04 (2006.01); C08F 2/00 (2006.01);
U.S. Cl.
CPC ...
C08F 136/06 (2013.01); C08F 2/001 (2013.01); C08F 4/545 (2013.01); C08F 36/04 (2013.01); C08F 136/04 (2013.01); C08F 236/04 (2013.01);
Abstract
A method of preparing a conjugated diene-based polymer by continuous polymerization using two or more reactors is provided. The method of preparing a conjugated diene-based polymer includes a conjugated diene-based polymer having excellent cis 1,4 bond content and linearity, by adjusting the ratio of a polymer and a monomer in each reactor and by adjusting the retention time in a second reactor and resolving the deterioration phenomenon of physical properties, while improving productivity by reducing the contamination of the reactors.