RUBBER COMPOSITION FOR CONSTRUCTION VEHICLE PNEUMATIC TIRE AND CONSTRUCTION VEHICLE PNEUMATIC TIRE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition for a construction vehicle pneumatic tire which is excellent in all of processability, wear resistance, and hardness, and to provide a construction vehicle pneumatic tire using the same.SOLUTION: The rubber composition for a construction vehicle pneumatic tire contains a diene rubber (A), carbon black (B), and an acid-modified polyolefin (C). The diene rubber (A) contains 60 mass% or more of a styrene-butadiene copolymer rubber. The carbon black (B) has a nitrogen adsorption specific surface area of 80-160 m/g. The acid-modified polyolefin (C) has a melt mass flow rate of 100 g/10 min or more. The content of the carbon black (B) is 40-80 pts.mass based on 100 pts.mass of the diene rubber (A). The content of the acid-modified polyolefin (C) is 0.1-10 pts.mass based on 100 pts.mass of the diene rubber (A).SELECTED DRAWING: None