PROBLEM TO BE SOLVED: To provide a rubber composition in which processability and abrasion resistance are improved to higher levels than in the conventional art.SOLUTION: A rubber composition contains a diene rubber containing a styrene-butadiene copolymer component composed of at least one styrene-butadiene copolymer, and a reinforcing filler. The diene rubber containing a styrene-butadiene copolymer component composed of at least one styrene-butadiene copolymer satisfies the following conditions: (1) the content of bound styrene is 5-50 wt.%, (2) in 100 mol% of the total of an ozonolytic component containing a styrene-derived unit and/or a 1,2-bound butadiene-derived unit, of the components obtained by ozonolysis, an ozonolytic component V1 containing one 1,2-bound butadiene-derived unit is less than 20 mol%, (3) in 100 mol% of the total of an ozonolytic component containing a styrene-derived unit and/or a 1,2-bound butadiene-derived unit, of the components obtained by ozonolysis, an ozonolytic component S2V1 containing two styrene-derived units and one 1,2-bound butadiene-derived unit is 4 mol% or more, and (4) a vinyl content of a butadiene portion is 20% or more and less than 50%.SELECTED DRAWING: None

    【課題】加工性および耐摩耗性を従来レベル以上に向上するようにしたゴム組成物を提供する。【解決手段】(1)結合スチレンの含量が5〜50重量%、(2)オゾン分解により得られる成分のうち、スチレン由来単位および/または1,2−結合したブタジエン由来単位を含む分解成分の合計100モル%中、1,2−結合したブタジエン由来単位を1つ含む分解成分V1が20モル%以上、(3)オゾン分解により得られる成分のうち、スチレン由来単位および/または1,2−結合したブタジエン由来単位を含む分解成分の合計100モル%中、スチレン由来単位を2つおよび1,2−結合したブタジエン由来単位を1つ含む分解成分S2V1が4モル%以上、(4)ブタジエン部分のビニル含有量が20%以上50%未満を満たす、少なくとも1種のスチレン−ブタジエン共重合体からなるスチレン−ブタジエン共重合体成分を含むジエン系ゴムおよび補強性充填剤を含むことを特徴とする。【選択図】なし


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    Title :

    RUBBER COMPOSITION AND PNEUMATIC TIRE PREPARED THEREWITH


    Additional title:

    ゴム組成物およびそれを用いた空気入りタイヤ


    Contributors:

    Publication date :

    2017-11-16


    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 / 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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