| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for covering a carcass cord, which makes it possible to consider an effect on environment, prepare for decrease in supply quantity of petroleum resources in future, reduce rolling resistance and improve rubber strength and processability, and a tire having a carcass prepared by using the rubber composition. SOLUTION: The rubber composition for covering a carcass cord comprises 25-80 pts.mass of silica, 1-15 pts.mass of a silane coupling agent and 3-30 pts.mass of an organic vulcanizing agent represented by formula: -(R-S<SB>x</SB>)<SB>n</SB>- wherein R is -(CH<SB>2</SB>-CH<SB>2</SB>-O)<SB>m</SB>-CH<SB>2</SB>-CH<SB>2</SB>-; x is an integer of 2-6; n is an integer of 10-400; and m is an integer of 2-5, based on 100 pts.mass of a diene rubber. The invention further provides a tire having a carcass prepared by using the rubber composition. COPYRIGHT: (C)2008,JPO&INPIT
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