RUBBER COMPOSITION AND PNEUMATIC TIRE
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United States of America Patent
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Mar 17, 2015
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Aug 4, 2014
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Abstract
A rubber composition that can achieve both low heat generation performance and conductivity is provided. The rubber composition is obtained by dry mixing a wet masterbatch containing diene rubber and carbon black A having a nitrogen adsorption specific surface area (N2SA) of from 70 to 120 m2/g with carbon black B having a nitrogen adsorption specific surface area (N2SA) smaller than that of the carbon black A. The ratio of the carbon black B to the total carbon black in the rubber composition is from 15 to 48 mass %.
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