| 摘要 |
<p>A rubber composition comprising (1) a diene rubber, (2) a polypropylene resin, and (3) a block copolymer composed of one or more diene polymer blocks (A) and one or more hydrogenated diene polymer blocks (B) and having a primary structure: (A-B)x, (A-B)x-A, or B-(A-B)x (wherein x is an integer of 1 or above), which is characterized in that the polypropylene resin (2) is contained in an amount of 0.1 to 70 parts by mass per 100 parts by mass of the diene rubber (1) and the block copolymer (3) is contained in an amount of 0.1 to 25 parts by mass per 100 parts by mass of the total of the diene rubber (1) and the polypropylene resin (2). This rubber composition is improved in dispersion properties of a diene rubber and a polyproplylene resin and interfacial adhesion, so that the rubber composition, crosslinkable rubber composition, and crosslinked rubber according to the invention are excellent in mechanical properties and wear resistance.</p> |
