| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition in which the reactivity of a silane coupling agent with an inorganic filler such as silica is improved and which is excellent in a low heat-generating property. <P>SOLUTION: The rubber composition comprises a rubber component (A), a phosphorous acid-based compound (B) represented by general formula (1) or a salt of the phosphorous acid-based compound (B), a filler containing an inorganic filler (C), and a silane coupling agent (D). In the formula, X<SP POS="POST">1</SP>, X<SP POS="POST">2</SP>and X<SP POS="POST">3</SP>are each independently O or -CH<SB POS="POST">2</SB>-; Y<SP POS="POST">1</SP>, Y<SP POS="POST">2</SP>and Y<SP POS="POST">3</SP>are each independently at least one selected from a single bond, 1-6C linear or branched aliphatic hydrocarbons, and 6-20C aromatic hydrocarbons; Z<SP POS="POST">1</SP>, Z<SP POS="POST">2</SP>and Z<SP POS="POST">3</SP>are each independently at least one selected from H, 1-6C linear or branched aliphatic hydrocarbons, and a carboxy group. <P>COPYRIGHT: (C)2013,JPO&INPIT |
