| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition with which a tire with significantly improved low pyrogenicity and wear resistance can be produced. <P>SOLUTION: The rubber composition comprises (A) a rubber component containing 10 mass% or more of a modified conjugated diene-based polymer having at least one type of functional group, which has weight-average molecular weight in terms of polystyrene of 200,000 or more as determined by gel permeation chromatography and, based on 100 pts.mass of (A), (B) 20 pts.mass or more of a reinforcing filler and (C) 5-60 pts.mass of an unmodified and/or modified low-molecular-weight aromatic vinyl compound-conjugated diene compound copolymer having weight-average molecular weight of ≥5,000 and <200,000 in its unmodified state or before modification, wherein the modified conjugated diene-based polymer in the (A) component has, as functional groups, an amino group that is protected by a protic amino group or eliminable group and a functional group containing a silicon atom. <P>COPYRIGHT: (C)2010,JPO&INPIT |
