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:
Dec. 18, 2012
Filed:
Aug. 09, 2011
Mana Ito, Ichihara, JP;
Katsunari Inagaki, Ichihara, JP;
Mayumi Oshima, Ichihara, JP;
Sumitomo Chemical Co., Ltd., Tokyo, JP;
Abstract
Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and a tensile strength at break can be obtained. There is provided a conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G).V-S  (1)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Srepresents a substituted silyl group.)V-A  (2)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Arepresents a substituted amino group, or a nitrogen-containing heterocyclic group.Compound (G): at least one kind of compound selected from the compound group consisting of a compound having an amino group optionally having a substituent and a carbonyl group, and a compound having an amino group optionally having a substituent and a thiocarbonyl group.