(a) not less than 0% by mass and not more than 20% by mass of (a1) a polybutadiene rubber comprising 2.5 to 20% by mass of 1,2-syndiotactic polybutadiene crystal and/or (a2) a butadiene rubber synthesized with a rare earth containing catalyst; (b) more than 5% by mass and not more than 60% by mass of (b1) a predetermined tin-modified polybutadiene rubber and/or (b2) a modified butadiene rubber modified with a predetermined compound; and (c) 40 to 75% by mass of a diene rubber other than (a) and (b).
Rubber composition for base tread
2019-02-12
Patent
Elektronische Ressource
Englisch
RUBBER COMPOSITION, TREAD, BASE TREAD RUBBER COMPOSITION, AND TIRE
Europäisches Patentamt | 2020
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