저(低)구름 저항성 및 웨트 스키드 저항성의 양쪽이 우수하고, 기계적 강도 및 내(耐)마모성이 우수한 고무 탄성체가 얻어지는 고무 조성물, 고무 탄성체 및 타이어 그리고 블록 공중합체를 제공한다. 본 발명의 고무 조성은, 공액 디엔 및 방향족 비닐에 의한 블록 (a-1)과, 공액 디엔 또는 이것과 방향족 비닐에 의한 블록 (a-2)로 이루어지는 블록 공중합체 (A), 그 이외의 특정의 중합체 (B), 그리고, 필러 (C)를 함유하고, 블록 공중합체 (A)가 특정의 관능기를 갖고, 블록 공중합체 (A)는, ASTM D3418에 준거하여 측정했을 때에, -100∼20℃의 범위에서 서로 5℃ 이상 떨어진 2개의 유리 전이 온도가 관측되어 블록 공중합체 (A)와 중합체 (B)와의 합계를 100질량%로 했을 때에, 블록 공중합체 (A)의 비율이 10질량% 이상이다.

    A rubber composition by which a rubber elastic body having both of excellent low rolling resistance and wet skid resistance and also having excellent mechanical strength and wear resistance can be obtained, a rubber elastic body, a tire, and a block copolymer are provided. The rubber composition of the present invention comprises a block copolymer (A) comprising a block (a-1) of a conjugate diene and an aromatic vinyl and a block (a-2) of a conjugate diene or the diene and an aromatic vinyl, a specific polymer (B) other than the copolymer, and a filler (C), wherein the block copolymer (A) has a specific functional group; the block copolymer (A) has two glass transition temperatures separated from each other by 5°C or more within a range of -100 to 20°C in measurement in accordance with ASTM D3418; and the ratio of the block copolymer (A) is 10% by mass or more when the sum of the block copolymer (A) and the polymer (B) is taken as 100% by mass.


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    Title :

    RUBBER COMPOSITION RUBBER ELASTOMER AND TIRE


    Additional title:

    고무 조성물, 고무 탄성체 및 타이어


    Publication date :

    2018-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten 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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