PROBLEM TO BE SOLVED: To provide a conjugated diene-vinyl aromatic hydrocarbon copolymer for manufacturing a tire excellent rolling resistance and wet skid resistance.SOLUTION: There is provided a conjugated diene-vinyl aromatic hydrocarbon copolymer containing a styrene monomer and a monomer unit represented by the chemical formula (1) as a vinyl aromatic hydrocarbon monomer with 5 to 90 wt.% of the styrene monomer unit and 10 to 95 wt.% of the monomer unit represented by the chemical formula (1) based on 100 wt.% of the sum of the styrene monomer unit and the monomer unit represented by the chemical formula (1) and glass transition temperature of the polymer of -17.6 to -21.5°C. In the formula, R is an alkyl group having 3 to 7 carbon atoms.SELECTED DRAWING: None
【課題】転がり抵抗と耐ウェットスキッド性のバランスに優れたタイヤを製造するための共役ジエン−ビニル芳香族炭化水素共重合体の提供。【解決手段】ビニル芳香族炭化水素系モノマーとしてスチレンモノマー単位と化学式(1)で表されるモノマー単位とを含み、スチレンモノマー単位と化学式(1)で表されるモノマー単位との総和を100重量%として、スチレンモノマー単位が5〜90重量%であり、化学式(1)で表されるモノマー単位が10〜95重量%であり、重合体のガラス転移温度が−17.6〜−21.5℃である、共役ジエン−ビニル芳香族炭化水素共重合体。(Rは炭素数3〜7のアルキル基)【選択図】なし
CONJUGATED DIENE-VINYL AROMATIC HYDROCARBON COPOLYMER
共役ジエン−ビニル芳香族炭化水素共重合体
2016-07-11
Patent
Electronic Resource
Japanese
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