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. 19, 2020
Filed:
Jul. 24, 2018
Applicant:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Inventors:
June Park, Seoul, KR;
Jae Young Ko, Daejeon, KR;
Assignee:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F 236/06 (2006.01); C08F 236/08 (2006.01); C08F 236/10 (2006.01); C08F 212/08 (2006.01); C08F 4/48 (2006.01); C08F 297/04 (2006.01); C08F 2/06 (2006.01); C08K 5/057 (2006.01); C08K 5/1535 (2006.01); C08K 5/17 (2006.01); C08L 9/06 (2006.01); C08F 236/04 (2006.01);
U.S. Cl.
CPC ...
C08F 212/08 (2013.01); C08F 2/06 (2013.01); C08F 4/48 (2013.01); C08F 236/06 (2013.01); C08F 236/10 (2013.01); C08F 297/044 (2013.01); C08K 5/057 (2013.01); C08K 5/1535 (2013.01); C08K 5/17 (2013.01); C08L 9/06 (2013.01); C08F 236/045 (2013.01); C08F 236/08 (2013.01); C08F 2410/01 (2013.01); C08L 2312/08 (2013.01);
Abstract
According to an embodiment of the present invention, there is provided a method of preparing a copolymer which includes (a) polymerizing an aromatic vinyl monomer and a conjugated diene-based monomer in the presence of a solvent, a first randomizing agent, and a catalyst to prepare a first copolymer including the aromatic vinyl monomer in an amount of 15 to 40 wt %; and (b) reacting the first copolymer with one or more of a second randomizing agent different from the first randomizing agent and an additional aromatic vinyl monomer to prepare a second copolymer.