PURPOSE: To improve tire performance by using rubber composition, in the tread of tire, two kinds or more of specific diene series rubber, specific carbon black, ester series low temperature plasticizer, and naphthene series or paraffinic series softening agent are blended together in specific ratios.
CONSTITUTION: Vulganizable rubber composition in which 30W80pts.wt. of carbon black consisting of iodine adsorption amount exceeding 70mg/g and dibutyl phthalate oil absorption amount exceeding 90ml/100g and 20W50wt%, against said carbon black, of ester series low temperature plasticizer and/or a naphthene series or paraffinic series softening agent are added to 100pts.wt. of rubber consisting of 100W25 weight parts of one or more diene rubber consisting of stylene content of 0W30% and the vinyl coupling 25W95% of the butadiene section and 0W75pts.wt. of one or more diene series rubber different from the former is used for a tread. As a result, anti-wet-skid performance, rolling resistance, resistance to wear, and running on the snow and ice can be improved.
YUTOU KAZUAKI
ONIKI TOORU
| JPS57200432A | 1982-12-08 | |||
| JPS54138046A | 1979-10-26 |