| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a modified conjugated diene copolymer composition having excellent processability, excellent performances of low-hysteresis loss and wet skid resistance, in a good balance of these properties, and having high abrasion resistance and fracture strength. <P>SOLUTION: The modified conjugated diene copolymer has a modification rate of 75 mass% or more and exhibits at least three peaks (A), (B) and (C) in a molecular weight distribution curve. When the whole area of the molecular weight distribution curve is regarded as 100%, the peak (A) area is 5 to 39% and the peak (C) area is 10% or more. The peak top molecular weights of the peaks (A), (B) and (C) are in the following ranges: the peak top molecular weight of the peak (A) is from 100,000 to 300,000; the peak top molecular weight of the peak (B) is 1.5 to 4.0 times the peak top molecular weight of the peak (A); and the peak top molecular weight of the peak (C) is 300,000 or more. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
