Copolymer, rubber composition using same, and tire
AssigneesKuraray Co., Ltd., Amyris, Inc.
InventorsDaisuke Koda, Kei Hirata
Life of this patent
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Abstract
The present invention relates to a copolymer including a monomer unit (a) derived from a conjugated diene having not more than 12 carbon atoms and a monomer unit (b) derived from farnesene; a process for producing the copolymer including at least the step of copolymerizing a conjugated diene having not more than 12 carbon atoms with farnesene; a rubber composition including (A) the copolymer, (B) a rubber component and (C) carbon black; a rubber composition including (A) the copolymer, (B) a rubber component and (D) silica; a rubber composition including (A) the copolymer, (B) a rubber component, (C) carbon black and (D) silica; and a tire using the rubber composition at least as a part thereof.
Claims17
A rubber composition comprising:
- (A) a copolymer comprising a monomer unit (a) derived from a conjugated diene having not more than 12 carbon atoms and a monomer unit (b) derived from farnesene;
- (B) a rubber component;
- and
- (C) carbon black,
- wherein a content of the copolymer (A) and the carbon black (C) in the rubber composition is from 0.1 to 100 parts by mass and from 0.1 to 150 parts by mass, respectively, on the basis of 100 parts by mass of the rubber component (B).
The rubber composition according to claim wherein the rubber component (B) is at least one rubber selected from the group consisting of a styrene-butadiene rubber, a natural rubber, a butadiene rubber and an isoprene rubber.
The rubber composition according to claim wherein the copolymer has a weight average molecular weight (Mw) of from 2,000 to 500,000.
Dependencies are inferred from the claim text.