Patent ID: 6977286

Claim:
A crosslinked rubber particle comprising as repeating units (a) 40 to 94.89% by weight of a conjugated diene unit, (b) 5 to 50% by weight of an aromatic vinyl unit, (c) 0.01 to 10% by weight of a monomer unit having at least two polymerizable unsaturated group and (d) 0.1 to 30% by weight of a monomer unit having one polymerizable unsaturated group and at least one functional group selected from an amino group, a hydroxyl group and an epoxy group; wherein the total amount of (a), (b), (c) and (d) is 100% by weight and wherein the particle has a particle size of 10 to 500 nm and a toluene-insolubles of 80% by weight or more.