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    • 1. 发明公开
    • Rubber composition for tyre
    • KautschukmischungfürReifen。
    • EP0678551A1
    • 1995-10-25
    • EP95302554.1
    • 1995-04-18
    • Sumitomo Rubber Industries Ltd.
    • Terakawa, KatsumiKikuchi, NaohikoMuraoki, KiyoshigeMatsuo, ToshirouUeda, Minoru
    • C08K5/17C08L15/00B60C1/00
    • C08L19/006B60C1/00B60C1/0016C08K5/17C08L15/00
    • A rubber composition for a tyre characteristically comprising a diene rubber having an epoxy group, either a monoamine compound or a diamine compound having a structural unit represented by the formula (1):

      (where R¹, R², R³, and R⁴ are each a hydrogen atom or an alkyl group having one to three carbon atoms, and X represents any structural formula) and carbon black, wherein the rubber composition has a dissipation factor at -10°C (tanδ(-10°C)) and a dissipation factor at 70°C (tanδ(70°C)) which satisfy the following expressions: 0. 03 ≦ tanδ(70°C) ≦ 0. 35 W.I.R = {tanδ(-10°C) - tanδc(-10°C) } / tanδc(-10°C) R.I.R = {tanδc(70°C) - tanδ(70°C) } / tanδc(70°C) T.I.R = W.I.R + 2 x (R.I.R) ≧ 0. 3
      where tanδc(-10°C) and tanδc(70°C) are tanδ at -10°C and 70°C of a control rubber composition of the same formulation as the rubber composition except that the control rubber composition includes a diene rubber having no epoxy group and is free of the diamine compound having a structural unit represented by the formula (1).
    • 一种轮胎用橡胶组合物,其特征在于,包含具有环氧基的二烯橡胶,单胺化合物或具有式(1)所示结构单元的二胺化合物:(其中R 1,R 2, R 3和R 4分别为氢原子或碳原子数1〜3的烷基,X表示任何结构式)和碳黑,其中,橡胶组合物的损耗系数为-10℃ C(tanδ(-10℃))和70℃下的耗散因子(tanδ(70℃)),满足以下表达式: 其中tanδ (-10℃)和tanδc(70℃)在-10℃和70℃下是与橡胶组合物相同配方的对照橡胶组合物的tanδ,除了对照橡胶组合物包括二烯橡胶 不具有环氧基并且不含具有由式(1)表示的结构单元的二胺化合物。