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US 11,549,003 B2Granted
Copolymer, rubber composition, and method of preparing the same
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsJi Hyun Heo, June Park, Cheolbeom Bae, Sung Hoon Han, Se-Hee Jung
Life of this patent
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Abstract
Disclosed is a copolymer including a first part including an aromatic vinyl-based monomer and a conjugated diene-based monomer; and a second part including an aromatic vinyl-based monomer and a conjugated diene-based monomer, wherein the content of the aromatic vinyl-based monomer is 35 to 45% by weight based on a total weight of the copolymer, and the copolymer satisfies Equation 1 below: V1>V2 <Equation 1> wherein V1 is a vinyl content in the first part, and V2 is a vinyl content in the second part.
Claims9
A copolymer, comprising:
- a first part comprising an aromatic vinyl-based monomer and a conjugated diene-based monomer;
- and
- a second part comprising an aromatic vinyl-based monomer and a conjugated diene-based monomer,
- wherein the content of the aromatic vinyl-based monomer is 38 to 42% by weight based on a total weight of the copolymer, and
- the copolymer satisfies Equation 1 below:
- V1>V2 <Equation 1>
- wherein V1 is a vinyl content in the first part, and
- V2 is a vinyl content in the second part;
- wherein V1 is 35 to 38% by weight, and V2 is 19 to 28% by weight;
- wherein a total vinyl content in the copolymer is 26 to 33% by weight, and
- wherein the copolymer has a molecular weight distribution of 1.0 to 1.2.
8 more elements
Dependencies are inferred from the claim text.