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. 09, 2013
Filed:
Feb. 27, 2008
Mayumi Oshima, Bartlesville, OK (US);
Mayumi Oshima, Bartlesville, OK (US);
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
An object of the present invention is to provide a conjugated diene-based polymer capable of providing a polymer composition which is excellent in a reduction in fuel consumption when silica is incorporated as a filler, a process for producing the conjugated diene-based polymer, and a polymer composition comprising said conjugated diene-based polymers and silica. The present invention provides a conjugated diene-based polymer comprising a conjugated diene-based constitutional unit and a constitutional unit expressed by the following formula (I), wherein said constitutional unit expressed by the formula (I) is between one of the conjugated diene-based constitutional units and another one: (I) (wherein X1, X2 and X3 represent independently a group expressed by the following formula (II), a hydroxide group, or a hydrocarbon group, and at least one of X1, X2 and X3 is the group expressed by the formula (II), or a hydroxide group: (II) wherein R1 and R2 represent independently a hydrocarbon group having 1 to 6 carbon atoms which can contain a nitrogen atom, an oxygen atom, or a silicon atom, and R1 and R2 can be combined to form a ring structure).