To solve following problems in which: in a tire rubber composition, there is a method of blending a thermoset resin for increased hardness and elastic moduli, but it causes a deterioration of exothermicity; while an increased rate of vulcanization enables increased tire productivity but requires balancing with other properties.SOLUTION: The present invention provides a tire rubber composition that has 100 pts.mass of a diene-based rubber compounded with 1-200 pts.mass of carbon black and 0.1-20 pts.mass of a phenolic resin having, in the molecule, at least one ethyleneamine-derived structural unit represented by -(NH-C2H4)-.SELECTED DRAWING: None
【課題】タイヤ用ゴム組成物において、高硬度化や高弾性率化を目的として、熱硬化性樹脂を配合する手法があるが、発熱性が悪化するという問題点がある。一方、加硫速度を速めるとタイヤの生産性を向上できるが、他物性とのバランス化を図る必要がある。【解決手段】ジエン系ゴム100質量部に対し、カーボンブラックを1〜200質量部、および分子中に−(NH−C2H4)−で表されるエチレンアミン由来の構造単位を少なくとも1個以上有するフェノール樹脂を0.1〜20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
TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE OBTAINED USING SAME
タイヤ用ゴム組成物およびそれを用いた空気入りタイヤ
2021-01-14
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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