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:
Nov. 08, 2016
Filed:
Nov. 25, 2013
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Hanbaek Lee, Daejeon, KR;
Gwanghoon Kwag, Daejeon, KR;
Hoochae Kim, Daejeon, KR;
Seunghyun Do, Suwon-si, KR;
Bunyeoul Lee, Suwon-si, KR;
Jihae Park, Hwaseong-si, KR;
Ahreum Kim, Anyang-si, KR;
Korea Kumho Petrochemical Co., Ltd., Jongno-gu, Seoul, KR;
Abstract
The present invention relates to preparing high 1,4-trans-polybutadiene by polymerizing 1,3-butadiene or a butadiene derivative in a non-polar solvent in the presence of a catalyst system comprising a novel bimetallic cobalt-aluminum adduct, which makes it possible to prevent gel formation, control the molecular weight of the trans-polybutadiene and increase the trans content of the trans-polybutadiene. The catalyst system comprising the novel cobalt-aluminum adduct has a high oxidation state and structural stability, and the reactivity of the catalyst is controlled using novel activation systems comprising various allyloxy aluminum compounds.