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:
Jul. 23, 2024
Filed:
Mar. 09, 2021
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Shogo Sumitani, Tokyo, JP;
Shinichi Sekikawa, Tokyo, JP;
Kenta Hisamura, Tokyo, JP;
Yoshifumi Araki, Tokyo, JP;
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a conjugated diene-based polymer composition excellent in rolling resistance, grip performance on a wet road surface, and abrasion resistance when formed into a tire. Also provided is a conjugated diene-based polymer composition containing: 10 to 90 parts by mass of a conjugated diene-based polymer (A) having a glass transition temperature of −20° C. or more; and 10 to 90 parts by mass of a conjugated diene-based polymer (B) having a glass transition temperature of −25° C. or less, wherein the conjugated diene-based polymer (A) has an absolute molecular weight, measured by viscosity detector-equipped GPC-light scattering measurement, of 40×10or more and 5000×10or less, and a branch number (Bn), measured by the viscosity detector-equipped GPC-light scattering measurement, of 8 or more.