To provide a rubber composition for tires which is excellent in wet performance and on-ice performance when formed into a tire, a studless tire produced using the rubber composition for tires, and a method for producing a polyurethane foam used in the rubber composition for tires.SOLUTION: The rubber composition for tires contains 100 pts.mass of a diene rubber, 30-100 pts.mass of a filler containing at least one selected from the group consisting of carbon black and a white filler, and 1-30 pts.mass of a polyurethane foam containing cellulose fibers. The ratio of the cellulose fibers to the whole polyurethane foam is 1-25 mass%.SELECTED DRAWING: Figure 1

    【課題】タイヤにしたときにウェット性能及び氷上性能に優れるタイヤ用ゴム組成物、上記タイヤ用ゴム組成物を用いて製造されたスタッドレスタイヤ、及び、上記タイヤ用組成物に使用されるポリウレタン系発泡体の製造方法を提供する。【解決手段】ジエン系ゴム100質量部と、カーボンブラック及び白色充填剤からなる群より選択される少なくとも1種を含む充填剤30~100質量部と、セルロース繊維を含むポリウレタン系発泡体1~30質量部とを含有し、上記ポリウレタン系発泡体全体に対する上記セルロース繊維の割合が、1~25質量%である、タイヤ用ゴム組成物。【選択図】図1


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    Title :

    RUBBER COMPOSITION FOR TIRES, STUDLESS TIRE, AND METHOD FOR PRODUCING POLYURETHANE FOAM


    Additional title:

    タイヤ用ゴム組成物、スタッドレスタイヤ、及び、ポリウレタン系発泡体の製造方法


    Contributors:

    Publication date :

    2024-09-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / 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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