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    • 2. 发明授权
    • Polypropylene resin composition
    • 聚丙烯树脂组合物
    • US5308908A
    • 1994-05-03
    • US936389
    • 1992-08-28
    • Osamu FukuiKouhei UenoYoshifumi NakanoIkunori SakaiTakao NomuraTakeyoshi NishioHisayuki Iwai
    • Osamu FukuiKouhei UenoYoshifumi NakanoIkunori SakaiTakao NomuraTakeyoshi NishioHisayuki Iwai
    • C08K3/34C08L23/08C08L23/16C08L53/00C08L23/04
    • C08K3/34C08L53/00C08L2205/02C08L23/0815C08L23/16
    • A polypropylene resin composition comprising:(A) 45 to 70% by weight of an ethylene-propylene block copolymer synthesized under the process comprising the steps of;(a) polymerizing propylene with a Ziegler-Natta catalyst to obtain a highly crystalline polypropylene that contain not less than 97% by weight of a fraction insoluble in boiling n-heptane, and(b) copolymerizing ethylene with the polypropylene (a), and which(a) contains 0.5 to 10% by weight of ethylene,(b) contains 5 to 20% by weight of a fraction being soluble in p-xylene at room temperature and having an intrinsic viscosity value of not less than 2 (measured in decalin at 135.degree. C.),(c) has a melt-flow index value of 30 to 100 g/10 min., and,(d) has a value of flexural modulus of not less than 18,000 kg/cm.sup.2,(B) 10 to 20% by weight of an amorphous ethylene-propylene copolymer having(a) an ethylene content of 70 to 90% by weight,(b) a Mooney viscosity value (ML.sub.1+4 at 100.degree. C.) of 5 to 70,(C) 5 to 15% by weight of an ethylene-.alpha.-olefin copolymer having(a) an .alpha.-olefin content of 5 to 15% by mole,(b) a value of gravity of not more than 0.91, and(c) a melt-flow index value of 2.2 to 50 g/10 min. at 230.degree. C.,(D) 1 to 10% by weight of an amorphous ethylene-butene copolymer having(a) a butene content of 10 to 25% by weight, and(b) a Mooney viscosity value (ML.sub.1+4, at 100.degree. C.) of 5 to 20,(E) not more than 15% by weight of a talc that(a) has an average diameter D50 of from 1.0 to 3.0 .mu.m, and(b) does not contain a particle having a diameter of 10 .mu.m or more,wherein the component (B) is rubber reinforced by lamellae of components (C) and (D).
    • 一种聚丙烯树脂组合物,其包含:(A)45至70重量%的在包括以下步骤的方法中合成的乙烯 - 丙烯嵌段共聚物: (a)用齐格勒 - 纳塔催化剂聚合丙烯以获得含有不少于97重量%不溶于沸腾正庚烷的馏分的高度结晶的聚丙烯,和(b)使乙烯与聚丙烯(a)共聚,和 (a)含有0.5〜10重量%的乙烯,(b)在室温下含有5〜20重量%的可溶于对二甲苯的馏分,其特性粘度值不小于2(以 十氢萘在135℃),(c)的熔体流动指数值为30〜100g / 10分钟,(d)弯曲弹性模量值不小于18,000kg / cm 2,(B )10〜20重量%的(a)乙烯含量为70〜90重量%,(b)门尼粘度值(100℃时ML1 + 4)为5〜70的无定形乙烯 - 丙烯共聚物 ,(C)5〜15重量%的(a)α-烯烃含量为5〜15摩尔%的乙烯-α-烯烃共聚物,(b)重力值不大于0.91,( c)熔体流动inde x值为2.2〜50g / 10min。 (D)1〜10重量%的(a)丁烯含量为10〜25重量%的无定形乙烯 - 丁烯共聚物,(b)门尼粘度值(ML1 + 4, 在100℃下为5〜20,(E)不超过15重量%的滑石,(a)平均直径D50为1.0〜3.0μm,(b)不含有颗粒 其直径为10μm以上,其中,成分(B)由成分(C)和(D)的薄片橡胶增强。
    • 7. 发明授权
    • Resin composition for automobile bumper
    • 汽车保险杠用树脂组合物
    • US5532309A
    • 1996-07-02
    • US262365
    • 1994-06-20
    • Osamu FukuiKouhei UenoYoshifumi NakanoYukimasa HamadaTakeyoshi NishioTakao NomuraNobuya Kawamura
    • Osamu FukuiKouhei UenoYoshifumi NakanoYukimasa HamadaTakeyoshi NishioTakao NomuraNobuya Kawamura
    • C08K3/34B60R19/03C08L23/08C08L23/16C08L53/00C08L53/02C08L23/00
    • C08L53/00B60R19/03C08L2205/02C08L23/0815C08L23/16C08L53/02
    • A resin composition for an automobile bumper comprising components (A), (B), and (C) described below:(A) 45 to 74% by weight of a crystalline ethylene-propylene block copolymer having (a) a flexural modulus of 15,000 kg/cm.sup.2 or more, (b) an ethylene content of 5 to 20% by weight, (c) an intrinsic viscosity (decalin, 135.degree. C.) of a portion soluble in p-xylene at room temperature of 3 or more, (d) a melt flow index (MI) of 21 to 70 g/10 min., and (e) a content of a portion insoluble in boiling n-heptane of 97% by weight or more;(B) 21 to 35% by weight of elastomer selected from the group consisting of components (I), (II) and (III) and having a weight ratio of (I) : [(I)+(II)+(III)] of from 0.5 to 1.0, (a) said component (1) being an amorphous ethylene-butene copolymer having a butene content of 10 to 25% by weight and a Mooney viscosity value, (ML.sub.1+4, 100.degree. C.) of 5 to 20, (b) said component (II) being an amorphous ethylene-propylene copolymer having an ethylene content of 70 to 90% by weight and a Mooney viscosity value (ML.sub.1+4, 100.degree. C.) of 5 to 40, and (c) said component (III) being a hydrogenated block copolymer consisting of 10 to 40% by weight of an aromatic vinyl polymer block X and 60 to 90% by weight of a conjugate diene polymer block Y, having a structure of said block components being X-Y or X-(Y-X).sub.n , wherein n is 1 or 2, 90 mol% or more of said block Y being hydrogenated and the melt flow index (MI) of the hydrogenated block copolymer being 5 g/10 min. (230.degree. C., 2.16 kg) or more, and;(C) 5 to 10% by weight of talc having a combustion loss of 7% by weight or less, containing no particles having a diameter of 10 .mu.m or more and having an average particle diameter D.sub.50 of 1.0 to 3.0 .mu.m.
    • 一种汽车保险杠用树脂组合物,其包含下述成分(A),(B)和(C):(A)45〜74重量%的结晶乙烯 - 丙烯嵌段共聚物,其具有(a)弯曲弹性模量为15000 kg / cm 2以上,(b)乙烯含量为5〜20重量%,(c)在室温下可溶于对二甲苯的部分的特性粘度(萘烷,135℃)为3以上, (d)21〜70g / 10分钟的熔体流动指数(MI),和(e)不溶于沸腾正庚烷的部分的含量为97重量%以上; (B)21〜35重量%的选自组分(I),(II)和(III)并且重量比为(I):[(I)+(II)+(III) )]为0.5〜1.0,(a)所述成分(1)为无定形乙烯 - 丁烯共聚物,其丁烯含量为10〜25重量%,门尼粘度值(ML1 + 4,100℃) 为5〜20,(b)所述成分(II)为乙烯含量为70〜90重量%,门尼粘度值(ML1 + 4,100℃)为5〜40的非晶质乙烯 - 丙烯共聚物 ,和(c)所述组分(III)是由10至40重量%的芳族乙烯基聚合物嵌段X和60至90重量%的共轭二烯聚合物嵌段Y组成的氢化嵌段共聚物,其结构为所述 嵌段组分为XY或X-(YX)n,其中n为1或2,90摩尔%以上的所述嵌段Y为氢化的,氢化嵌段共聚物的熔体流动指数(MI)为5g / 10min。 (230℃,2.16kg)以上, (C)5〜10重量%的燃烧损失为7重量%以下的滑石,不含直径为​​10μm以上且平均粒径D50为1.0〜3.0μm的粒子。