Rubber Composition and Pneumatic Tire Manufactured Using Same

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United States of America Patent

SERIAL NO

15558176

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Abstract

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A rubber composition contains a diene rubber containing a styrene-butadiene copolymer component formed from at least one type of styrene-butadiene copolymers, and a reinforcing filler. The styrene-butadiene copolymer(s) satisfy: (1) a bonded styrene content is from 5 to 50 wt. %; (2) a total of styrene content of an ozone-decomposed component S1 having one styrene-derived unit and styrene content of an ozone-decomposed component S1V1 having one styrene-derived unit and one 1,2-bonded butadiene-derived unit is less than 80 wt. % of the bonded styrene content and a total of styrene content of the ozone-decomposed component S1V1 is less than 10 wt. % of the bonded styrene content; (3) an integrated intensity of an ozone-decomposed component S1V2 having one styrene-derived unit and two 1,2-bonded butadiene-derived units is 15% or greater of an integrated intensity of all ozone-decomposed products containing a styrene-derived unit; and (4) a vinyl content of butadiene moiety is 50% or greater.

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Patent Owner(s)

Patent OwnerAddress
THE YOKOHAMA RUBBER CO LTDTOKYO JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ashiura, Makoto Hiratsuka-shi, Kanagawa, JP 55 141
Sakai, Ryosuke Hiratsuka-shi, Kanagawa, JP 35 35
Sekine, Yuko Hiratsuka-shi, Kanagawa, JP 20 27
Yatsuyanagi, Fumito Hiratsuka-shi, Kanagawa, JP 44 315

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