abstract |
Provided is a conjugated diene-based polymer, a conjugated diene-based polymer composition, and a tire, which satisfy requirements (1)-(4) below: (1) there are two or more peaks in a molecular weight distribution curve obtained by gel permeation chromatography (GPC); (2) in the molecular weight distribution curve, there is a peak (A) having a peak molecular weight of 500,000-2,500,000, and a peak (B) having a peak molecular weight of 150,000-600,000; (3) the sum of the area of the peak (A) and the area of the peak (B) makes up at least 70% of the total area of the molecular weight distribution curve; and (4) the absolute value of the difference between the glass transition temperature (Tg(A)) of the conjugated diene-based polymer included in the peak (A) and the glass transition temperature (Tg(B)) of the diene-based polymer included in the peak (B) is 2-30°C. |