Tire rubber composition and pneumatic tire
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United States of America Patent
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Oct 24, 2017
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app pub date -
Mar 13, 2014
filing date -
Apr 30, 2013
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Abstract
A rubber composition that achieves a balanced improvement in wet grip performance, abrasion resistance, and roll processability, and a pneumatic tire formed from the rubber composition. The rubber composition includes, per 100 parts by mass of a rubber component, 1-60 parts by mass of an inorganic reinforcing agent having an average particle size of 0.69 μm or less and a nitrogen adsorption specific surface area of 10-50 m2/g, the inorganic reinforcing agent being represented by the following formula: kM1.xSiOy.zH2O wherein M1 represents at least one metal selected from the group consisting of Al, Mg, Ti, Ca, and Zr, or an oxide or hydroxide of the metal; k represents an integer of 1 to 5; x represents an integer of 0 to 10; y represents an integer of 2 to 5; and z represents an integer of 0 to 10.
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