Rubber composition and tire
AssigneeBridgestone Corporation
InventorKosuke TAKANO
Life of this patent
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Abstract
Provided is a rubber composition capable of improving fuel efficiency and wet performance of a tire, the rubber composition comprising: a diene-based polymer (A), a filler (B), and at least one kind of resin (C) selected from the group consisting of a C5 resin, a C9 resin, a C5-C9 resin, and a dicyclopentadiene resin, wherein: the filler (B) is compounded by 40 to 120 parts by mass with respect to 100 parts by mass of the diene-based polymer (A); the filler (B) contains 50 to 100 mass % of silica having an average primary particle size of 20 nm or more and a nitrogen adsorption specific surface area of 150 m2/g or less; and the resin (C) is compounded by 5 to 50 parts by mass with respect to 100 parts by mass of the diene-based polymer (A).
Claims20
A rubber composition comprising:
- a diene-based polymer (A);
- a filler (B);
- and at least one kind of resin (C) selected from the group consisting of a C5 resin, a C9 resin, a C5-C9 resin, and a dicyclopentadiene resin,
- wherein:
- the filler (B) is compounded by 40 to 120 parts by mass with respect to 100 parts by mass of the diene-based polymer (A);
- the filler (B) contains 50 to 100 mass % of silica having an average primary particle size of 20 nm or more and a nitrogen adsorption specific surface area of 150 m2/g or less;
- and
- the resin (C) is compounded by 5 to 50 parts by mass with respect to 100 parts by mass of the diene-based polymer (A).
Dependencies are inferred from the claim text.