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    • 5. 发明授权
    • Polypropylene resin composition and a molded article thereof
    • 聚丙烯树脂组合物及其模制品
    • US5480932A
    • 1996-01-02
    • US266495
    • 1994-06-27
    • Yutaka KobayashiOsamu AokiKenji HamabeAtsushi TakeuchiTakayuki Onda
    • Yutaka KobayashiOsamu AokiKenji HamabeAtsushi TakeuchiTakayuki Onda
    • C08L9/00C08L23/10C08L23/16C08L53/00C08L47/00
    • C08L23/10C08L53/00C08L23/16C08L9/00
    • A polypropylene resin composition comprising: (a) 50 to 90% by weight of polypropylene, (b) 50 to 10% by weight of an ethylene-.alpha.-olefin copolymer elastomer having a Mooney viscosity (ML 1+4 (100.degree. C.)) of 10 to 100, (c) 0.5 to 10 parts by weight per 100 parts by weight of the total of the amounts of the components (a) and (b) of a linear olefinic polymer containing hydroxyl group which is liquid at room temperature, and (d) 0.5 to 15 parts by weight per 100 parts by weight of the total of the amounts of the components (a) and (b) of a linear olefinic polymer having a melting point of about 70.degree. to about 90.degree. C. and a number-average molecular weight of 1500 to 6000 and containing hydroxyl group or carbonyl group; and a protective strip for automobiles using the polypropylene resin composition are disclosed. Coating immediately after degreasing is made possible and excellent property for coating can be provided by using the polypropylene resin composition.
    • 一种聚丙烯树脂组合物,其包含:(a)50至90重量%的聚丙烯,(b)50至10重量%的门尼粘度(ML 1 + 4(100℃)的乙烯-α-烯烃共聚物弹性体) ))为10〜100,(c)相对于室内为液体的含有羟基的直链烯烃系聚合物的成分(a)和(b)的总量的100重量份,为0.5〜10重量份 温度,和(d)每100重量份熔点为约70℃至约90℃的线性烯烃聚合物的组分(a)和(b)的总量的0.5至15重量份 且数均分子量为1500〜6000,含有羟基或羰基; 并公开了使用该聚丙烯树脂组合物的汽车用保护带。 通过使用聚丙烯树脂组合物,可以在脱脂后立即进行涂布,可以提供优异的涂布性。
    • 9. 发明授权
    • Molded protective strip for automobiles
    • 汽车成型保护条
    • US5574087A
    • 1996-11-12
    • US413176
    • 1995-03-29
    • Yutaka KobayashiTakayuki OndaKenji HamabeOsamu Aoki
    • Yutaka KobayashiTakayuki OndaKenji HamabeOsamu Aoki
    • C08K3/34C08L23/10C08L23/12C08L23/16C08L53/00C08K3/22
    • C08L23/12C08K3/34C08L23/10C08L53/00C08L23/16
    • A molded protective strip for automobiles is prepared by the gas injection molding of a resin composition which comprises (A) 55 to 75% by weight of polypropylene, (B) 18 to 30% by weight of ethylene-propylene copolymer rubber, and (C) 10 to 20% by weight of talc, has a ratio (MI).sub.PP /(MI).sub.EPR of 10 or less, and a polydispersity index of 20 to 100. (MI).sub.PP and (MI).sub.EPR represents melt indices of the polypropylene of component (A) and the ethylene-propylene copolymer rubber of component (B), respectively. The polydispersity index is calculated from a frequency-storage modulus curve obtained with a composition consisting of components (A), (B), and (C) alone at the temperature of 230.degree. C. The molded protective strip can be prepared without using a vinyl chloride resin, shows almost no heat shrinkage, has a small coefficient of linear expansion, is excellent in dimensional stability, and exhibits excellent appearance.
    • 通过气体注射成型树脂组合物制备模塑保护带,该树脂组合物包含(A)55-75重量%的聚丙烯,(B)18-30重量%的乙烯 - 丙烯共聚物橡胶,和(C )10〜20重量%的滑石,具有10以下的比(MI)PP /(MI)EPR,多分散指数为20〜100。(MI)PP和(MI)EPR表示 组分(A)的聚丙烯和组分(B)的乙烯 - 丙烯共聚物橡胶。 多分散性指数由在230℃的温度下单独由组分(A),(B)和(C)组成的组合物获得的频率 - 储能模量曲线计算。模制的保护条可以在不使用 氯乙烯树脂几乎没有热收缩,线膨胀系数小,尺寸稳定性优异,外观优异。