Patent ID: 8697793
Filing Date: 2014-04-15
Classification: B60C,C08K,C08L

Abstract:
1. A rubber composition for use in tires, comprising a diene rubber and: from 5 to 70 parts by mass of silica having a BET specific surface area from 50 to 200 m from 1 to 25 parts by mass of an aromatic modified terpene resin obtained by polymerizing an aromatic compound and at least one terpene selected from the group consisting of α-pinene, β-pinene, dipentene, and limonene; and from 1.5 to 70 parts by mass of a naphthenic oil where a CN % proportion of a CA %·CP %·CN % ratio calculated according to ASTM D2140/ASTM D3238 is the greatest and the CA % proportion is less than 15%; and a dynamic viscosity at 40° C. is from 17 to 30 mm per 100 parts by mass of the diene rubber.