| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition capable of being used as a member for a bead portion such as a carcass in a tire for heavy load, having durability while maintaining excellent adhesive strength and good in workability during manufacturing.SOLUTION: The invention achieves adhesive strength, durability and workability during manufacturing by using a rubber composition containing a rubber component consisting of a specific diene rubber where glycerine fatty acid ester composition is blended in the rubber composition, the amount of sulfur atom contained in the glycerine fatty acid ester composition is 1 atom or less per a molecule of glycerine fatty acid ester, zinc flower of 3 pts.mass or more based on 100 pts.mass of the rubber component and cobalt organic acid salt of 1.0 to 5.0 pts based on 100 pts.mass of the rubber component are contained. |
