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    • 3. 发明授权
    • Thermoplastic elastomer composition for a powder for slush molding and skin formed therefrom
    • 用于搪塑的粉末的热塑性弹性体组合物和由其形成的皮肤
    • US06812285B2
    • 2004-11-02
    • US10055169
    • 2001-10-26
    • Hirohide EnamiKenrou OnoKenji KubomotoYoshihiro Toda
    • Hirohide EnamiKenrou OnoKenji KubomotoYoshihiro Toda
    • C08L900
    • C08L23/16C08L23/10C08L25/10C08L53/02C08L53/025C08L2666/04C08L2666/24C08L2666/06
    • A thermoplastic elastomer composition for a powder material used for slush molding. The thermoplastic elastomer composition consists of a polypropylene resin and 20 to 500 parts by mass of a hydrogenated block copolymer per 100 parts by mass of the polypropylene resin. The hydrogenated block copolymer has a) at least one polymer block A with a primary component that is a vinyl aromatic hydrocarbon monomer unit and b) at least one polymer block B with a primary component that is a hydrogenated butadiene monomer unit. The polymer block B has a hydrogenation degree of at least 90%. The vinyl aromatic hydrocarbon in the hydrogenated block copolymer is present in an amount more than 5 mass % and less than 25 mass %. The polymer block B before hydrogenation contains 62 mol % or more 1, 2 bonds on average. The melt flow rate (MFR) of the thermoplastic elastomer composition is at least 10 g/10 min at 230° C. under a load of 2.16 kgf in accordance with Japanese Industrial Standards (JIS) K7210.
    • 用于搪塑的粉末材料的热塑性弹性体组合物。 热塑性弹性体组合物由聚丙烯树脂和每100质量份聚丙烯树脂20〜500质量份氢化嵌段共聚物构成。 氢化嵌段共聚物具有a)至少一种聚合物嵌段A,其主要组分为乙烯基芳族烃单体单元,和b)至少一种聚合物嵌段B,其主要组分为氢化丁二烯单体单元。 聚合物嵌段B的氢化度至少为90%。 氢化嵌段共聚物中的乙烯基芳族烃以超过5质量%且小于25质量%的量存在。 氢化前的聚合物嵌段B平均含有62mol%以上的1,2键。 根据日本工业标准(JIS)K7210,热塑性弹性体组合物的熔体流动速率(MFR)在230℃,2.16kgf负荷下为至少10g / 10分钟。