| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for a tire that well-balancedly enhances a low-fuel consumption property, a moisture barrier property and durability, and a pneumatic tire using the same. SOLUTION: The rubber composition for a tire comprises silica, bituminous coal and a silane coupling agent of formula (1) (wherein R<SP>1</SP>is a group represented by the formula: -O-(R<SP>5</SP>-O)<SB>m</SB>-R<SP>6</SP>(wherein R<SP>5</SP>is a branched/non-branched 1-30C bivalent hydrocarbon group; R<SP>6</SP>is a branched/non-branched 1-30C alkyl group, a branched/non-branched 2-30C alkenyl group, a 6-30C aryl group or a 7-30C aralkyl group; and m is 1-30); R<SP>2</SP>and R<SP>3</SP>are the same group as R<SP>1</SP>, or a branched/non-branched 1-12C alkyl group or a group represented by the formula: -O-R<SP>7</SP>(wherein R<SP>7</SP>is a hydrogen atom, a branched/non-branched 1-30C alkyl group, a branched/non-branched 2-30C alkenyl group, a 6-30C aryl group or a 7-30C aralkyl group); and R<SP>4</SP>is a branched/non-branched 1-30C alkylene group). COPYRIGHT: (C)2011,JPO&INPIT
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