| abstract |
Hydrogenated conjugated diene-based rubber having a hydrogenation rate of butadiene units of 90% or more, wherein the conjugated diene-based rubber is a copolymerized rubber of the conjugated diene compound and a vinyl aromatic compound having a copolymerized portion randomly in which the conjugated diene compound and the vinyl aromatic compound are unevenly distributed, and in which, in the molecular weight distribution of the hydrogenated conjugated diene-based rubber determined by a gel permeation chromatographic method, when a peak area of a molecular weight of 1,000 to 250,000 is regarded as AL and a peak area of a molecular weight of 250,000 or more is regarded as AH, the ratio of AL to the total area of AL and AH is 0.5 % to 20%. |