CONJUGATED DIENE COPOLYMER AND METHOD FOR MANUFACTURING CONJUGATED DIENE COPOLYMER

A conjugated diene copolymer has a covalent bond reversibly dissociated and added by heat, and has at least two peaks in each of curves of molecular weight distributions measured at 40°C and 60°C by gel permeation chromatography, wherein a change rate of the proportion of the area of the peak having the lowest molecular weight in measurement at 60°C to the proportion of the area of the peak having the lowest molecular weight in measurement at 40°C.