RUBBER COMPOSITION FOR TIRE TREADS AND PNEUMATIC TIRE

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United States of America Patent

SERIAL NO

15557701

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Abstract

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A rubber composition for tire treads contains an inorganic filler containing silica and a diene rubber containing a carboxy-modified polymer. The content of the inorganic filler is from 70 to 170 parts by mass per 100 parts by mass of the diene rubber. The content of the silica is from 70 to 160 parts by mass per 100 parts by mass of the diene rubber. The carboxy-modified polymer is obtained by modifying a styrene-butadiene rubber (A) with a nitrone compound (B) having a carboxy group, and the content of the carboxy-modified polymer in the diene rubber is from 10 to 100 mass %. The content of styrene units in the styrene-butadiene rubber (A) is not less than 36 mass %. The degree of modification of the carboxy-modified polymer is from 0.02 to 4.0 mol %.

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Patent Owner(s)

Patent OwnerAddress
THE YOKOHAMA RUBBER CO LTD36-11 SHIMBASHI 5-CHOME MINATO-KU TOKYO 105-8685

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KATO, Manabu HIRATSUKA CITY, KANAGAWA, JP 184 2355
KIRINO, Yoshiaki HIRATSUKA CITY, KANAGAWA, JP 44 193
OKAMATSU, Takahiro HIRATSUKA CITY, KANAGAWA, JP 61 95
TAKAHASHI, Ryota HIRATSUKA CITY, KANAGAWA, JP 77 86

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