To provide a rubber composition for tires that allows improved bonding resistance of unvulcanized rubber and exhibits excellent breaking strength as vulcanized rubber.SOLUTION: The present invention provides a rubber composition for tires that contains a diene rubber and a plasticizer X. The 1H-NMR spectrum of the plasticizer X satisfies indices I and II. Index I: 1.0≤{c÷(a+b+c)}×100≤5.0. Index II: 1.0≤log{(a+b)÷b}≤2.0. (In the indices I and II, a represents the integration ratio a of a signal at the area A of the 1H-NMR spectrum: 0.2-2.2 ppm, b represents the integration ratio b of a signal at the area B of the 1H-NMR spectrum: more than 2.2 ppm and 4.0 ppm or less, and c represents the integration ratio c of a signal at the area C of the 1H-NMR: 6.0-10 ppm).SELECTED DRAWING: None
【課題】本発明は、未加硫ゴムの耐接着性、加硫ゴムとしたときの破断強度が優れる、タイヤ用ゴム組成物の提供を目的とする。【解決手段】ジエン系ゴムと、可塑剤Xとを含有し、可塑剤Xの1H-NMRスペクトルが指標I及びIIを満たす、タイヤ用ゴム組成物。指標I:1.0≦{c÷(a+b+c)}×100≦5.0指標II:1.0≦log{(a+b)÷b}≦2.0上記指標I、II中、aは1H-NMRスペクトルの領域A:0.2~2.2ppmにおけるシグナルの積分比aを表し、bは1H-NMRスペクトルの領域B:2.2ppm超4.0ppm以下におけるシグナルの積分比bを表し、cは1H-NMRスペクトルの領域C:6.0~10ppmにおけるシグナルの積分比cを表す。【選択図】なし
RUBBER COMPOSITION FOR TIRES
タイヤ用ゴム組成物
2023-08-25
Patent
Electronic Resource
Japanese
RUBBER COMPOSITION FOR TIRES, VULCANIZED RUBBER COMPOSITION FOR TIRES, AND TIRE
European Patent Office | 2023
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