| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition for a tire which is excellent in ozone resistance and low fuel consumption property while taking the environment into consideration, and can prevent whitening, and a pneumatic tire using the same. <P>SOLUTION: The rubber composition for a tire contains a rubber component, carbon black, silica and different waxes (1) and (2). The rubber component contains a rubber (1) having a glass transition temperature of ≥-55°C and a polar group. With respect to 100 pts.mass of the rubber component, a content of the carbon black is 1-10 pts. mass, a content of the silica is 15-150 pts.mass, and a total content of the different waxes (1) and (2) is 0.5-8 pts.mass. The wax (1) is a natural wax containing a component having a softening point of <40°C, and the wax (2) is a polar natural wax containing a component having a softening point of ≥40°C. <P>COPYRIGHT: (C)2012,JPO&INPIT |
