To provide a rubber composition for tires that is effective in protecting tires from aging during its long-term use and also can prevent the tires from deteriorating in appearance due to coloring.SOLUTION: A rubber composition for tires contains diene rubber, carbon black and/or silica, and a sustained-release resin capsule, which contains 20-70 mass% of an ultraviolet absorber and/or a radical scavenger as active ingredients. Relative to 100 pts.mass of the diene rubber, the carbon black and/or silica is 20-200 pts.mass, and the sustained-release resin capsule is 0.1-10 pts.mass expressed as the amount of the active ingredients.SELECTED DRAWING: None
【課題】タイヤの長期使用に対して優れた劣化抑制効果を示し、かつタイヤの着色による外観劣化も防止可能なタイヤ用ゴム組成物を提供する。【解決手段】ジエン系ゴム100質量部に対し、カーボンブラックおよび/またはシリカを20~200質量部、並びに、有効成分として紫外線吸収剤および/またはラジカル捕捉剤を20~70質量%内包した徐放性樹脂カプセルを前記有効成分量として0.1~10質量部、配合してなるタイヤ用ゴム組成物によって上記課題を解決した。【選択図】なし
RUBBER COMPOSITION FOR TIRES AND TIRE INCLUDING THE SAME
タイヤ用ゴム組成物およびそれを用いたタイヤ
2023-03-24
Patent
Electronic Resource
Japanese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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