PROBLEM TO BE SOLVED: To provide a rubber composition for coating of a fiber cord which is excellent in low heat generation properties when molded to a tire and also in adhesiveness to a carcass cord and a pneumatic tire using the rubber composition.SOLUTION: A rubber composition for coating of a fiber cord comprises a diene rubber, carbon black and a nitrone compound having a carboxy group, and the diene rubber contains natural rubber and a styrene-butadiene rubber and/or butadiene rubber. The content of natural rubber in the total of the diene rubber and the nitrone compound is 65 mass% or lower; the content of carbon black is 40-67 pts. mass to the total of the diene rubber and the nitrone compound of 100 pts. mass; the content of the nitrone compound is 0.1-10 pts. mass to the total of the diene rubber and the nitrone compound of 100 pts. mass.
【課題】タイヤにしたときの低発熱性に優れ、カーカスコードとの接着性にも優れた繊維コード被覆用ゴム組成物、及び、上記ゴム組成物を使用した空気入りタイヤの提供。【解決手段】ジエン系ゴムと、カーボンブラックと、カルボキシ基を有するニトロン化合物とを含有し、上記ジエン系ゴムが、天然ゴムとスチレンブタジエンゴム及び/又はブタジエンゴムとを含み、上記ジエン系ゴムと上記ニトロン化合物との合計中の上記天然ゴムの含有量が65質量%以下であり、上記カーボンブラックの含有量が、上記ジエン系ゴムと上記ニトロン化合物との合計100質量部に対して40〜67質量部であり、上記ニトロン化合物の含有量が、上記ジエン系ゴムと上記ニトロン化合物との合計100質量部に対して0.1〜10質量部である、繊維コード4被覆用ゴム組成物。【選択図】図1
RUBBER COMPOSITION FOR COATING OF FIBER CORD AND PNEUMATIC TIRE
繊維コード被覆用ゴム組成物および空気入りタイヤ
07.12.2015
Patent
Elektronische Ressource
Japanisch
IPC: | D06M Behandeln von Fasern, Fäden, Garnen, Textilgut, Federn oder aus solchen Materialien hergestelltem Fasergut, soweit nicht anderweitig in Klasse D06 vorgesehen , TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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