Rubber composition and pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsRyota Takahashi, Manabu Kato, Takahiro Okamatsu, Yoshiaki Kirino
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Abstract
An object of the present invention is to provide a rubber composition capable of producing a pneumatic tire with both excellent low rolling resistance and wet grip performance, and a pneumatic tire comprising the rubber composition. The rubber composition comprises: a diene-based rubber containing 10 mass % or greater of a modified diene polymer; and an aromatic modified terpene resin; wherein the modified diene polymer is a modified polymer obtained by modifying an unmodified diene polymer (A) with a nitrone compound (B) having a carboxy group; and a content of the aromatic modified terpene resin is from 0.1 to 50 parts by mass per 100 parts by mass of the diene-based rubber.
Claims7
A rubber composition comprising:
- a diene-based rubber containing 10 mass % or greater of a modified diene polymer;
- and
- an aromatic modified terpene resin;
- wherein
- the modified diene polymer is a modified polymer obtained by modifying an unmodified aromatic vinyl-conjugated diene copolymer (A) with a nitrone compound (B) having a carboxy group;
- a content of the aromatic modified terpene resin is from 0.1 to 50 parts by mass per 100 parts by mass of the diene-based rubber;
- and
- the nitrone compound (B) is a compound selected from the group consisting of N-phenyl-α-(4-carboxyphenyl) nitrone, N-phenyl-α-(3-carboxyphenyl)nitrone, N-phenyl-α-(2-carboxyphenyl)nitrone, N-(4-carboxyphenyl)-α-phenylnitrone, N-(3-carboxyphenyl)-α-phenylnitrone, and N-(2-carboxyphenyl)-α-phenylnitrone.
Dependencies are inferred from the claim text.