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:
Jun. 12, 2012
Filed:
Oct. 20, 2008
Gwang Hoon Kwag, Daejeon, KR;
Pil Sung Kim, Daejeon, KR;
Seung Hwon Lee, Daejeon, KR;
Hyung Kyu Choi, Daejeon, KR;
Hyun Jin Kim, Carlsbad, CA (US);
Gwang Hoon Kwag, Daejeon, KR;
Pil Sung Kim, Daejeon, KR;
Seung Hwon Lee, Daejeon, KR;
Hyung Kyu Choi, Daejeon, KR;
Hyun Jin Kim, Carlsbad, CA (US);
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a preparation method of aromatic organosulfur functionalized 1,4-cis polybutadiene comprising: polymerizing 1,3-butadiene or butadiene derivative in the presence of a specific catalyst in a nonpolar solvent to prepare 1,4-cis polybutadiene; and reacting the resultant polybutadiene with an aromatic organosulfur compound. Such prepared aromatic organosulfur functionalized 1,4-cis polybutadiene is without ultrahigh molecular weight region and, thus, has narrow molecular weight distribution.