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    • 1. 发明授权
    • Propylene-ethylene block copolymer, resin composition, and blow-molded article
    • 丙烯 - 乙烯嵌段共聚物,树脂组合物和吹塑制品
    • US06313227B1
    • 2001-11-06
    • US09722005
    • 2000-11-27
    • Kenji TanakaYasuhisa SugitaMasaru NakagawaTetsuya Nakamura
    • Kenji TanakaYasuhisa SugitaMasaru NakagawaTetsuya Nakamura
    • C08L2312
    • C08L53/00C08F297/083
    • Provided are a propylene-ethylene block copolymer having MFR of from 0.01 to 1.0 g/10 min and comprised of (A) from 85 to 97% by weight a 25° C. xylene-insoluble fraction and (B) from 3 to 15% by weight of a 25° C. xylene-soluble fraction, wherein the fraction (A) is such that its stereospecificity index measured through 13C-NMR is at least 98.0%, its intrinsic viscosity [&eegr;] falls between 2.5 and 5.5 dl/g, and its weight-average molecular weight, Mw, measured through GPC and the content, S, of the fraction having a molecular weight of at most 104.5 therein satisfy S (wt. %)≦−5.3×10−6 Mw+7.58, and the fraction (B) is such that its ethylene unit content measured through 13C-NMR falls between 30 and 70% by weight, and its intrinsic viscosity [&eegr;] falls between 2.5 and 9.0 dl/g; and its blow-molded articles. The copolymer has good heat resistance, high rigidity, good impact resistance and good drawdown resistance, and its blow-molded articles have well-balanced rigidity and low-temperature barrier resistance.
    • 本发明提供的MFR为0.01〜1.0g / 10min的丙烯 - 乙烯嵌段共聚物,(A)85〜97重量%,25℃的二甲苯不溶成分,(B)3〜15% 的25℃二甲苯可溶级分,其中级分(A)使得其通过13 C-NMR测量的立体特异性指数为至少98.0%,其特性粘度η为2.5至5.5dl / g ,其通过GPC测定的重均分子量Mw和分子量至多为104.5的级分的含量S满足S(重量%)<= 5.3×10-6Mw + 7.58, 并且馏分(B)使得其通过13 C-NMR测量的乙烯单元含量为30〜70重量%,特性粘度η为2.5〜9.0dl / g; 及其吹塑制品。 该共聚物具有良好的耐热性,高刚性,良好的耐冲击性和良好的抗剥落性,其吹塑制品具有良好的刚性和耐低温阻隔性。
    • 3. 发明授权
    • Propylene resin composition and process for producing the same
    • 丙烯树脂组合物及其制备方法
    • US06407168B1
    • 2002-06-18
    • US09674524
    • 2000-11-21
    • Yasuhisa SugitaTakashi SaekiHiroki NakashimaMasaru NakagawaKenichi MitsuhashiYutaka Obata
    • Yasuhisa SugitaTakashi SaekiHiroki NakashimaMasaru NakagawaKenichi MitsuhashiYutaka Obata
    • C08L2312
    • C08J3/005B29C47/0011B29C47/50C08F297/083C08J2323/12C08L23/10C08L23/12C08L23/16C08L53/00C08L2205/02C08L2666/04C08L2666/24
    • Provided are a propylene resin composition comprising 100 parts byweight in total of two different types of propylene polymers each having specific properties, from 0 to 50 parts by weight of a specific elastomer, and from 0 to 50 parts by weight of an inorganic filler; and a method for producing it. The production method comprises melting and kneading two polymer groups each comprising one or more propylene polymers. The resin composition in which the viscosity difference between the propylene homopolymer segments to form the base polymer and the amorphous propylene segments to form the disperse phase is small is produced by first melting and kneading one polymer group, then immediately adding the other polymer group thereto, and further kneading and melting the two. For the composition in which the viscosity difference therebetween is large, the polymer groups are separately kneaded in melt, and the resulting melts are further kneaded. The propylene resin composition has high stiffness, high impact resistance and high fluidity, and its moldings have good appearances.
    • 提供一种丙烯树脂组合物,其包含100重量份的总共两种不同类型的具有特定性质的丙烯聚合物,0至50重量份的特定弹性体和0至50重量份的无机填料; 及其制造方法。 该制备方法包括熔融和捏合两种各自包含一种或多种丙烯聚合物的聚合物基团。 通过首先熔融和捏合一个聚合物基团,然后立即向其中加入另一个聚合物基团,产生其中形成基础聚合物的丙烯均聚物链段和形成分散相的无定形丙烯链段之间的粘度差小的树脂组合物, 并进一步捏合和熔融两者。 对于其间的粘度差较大的组合物,将聚合物基团分别捏合在熔体中,并将​​所得熔体进一步捏合。 丙烯树脂组合物具有高刚度,高抗冲击性和高流动性,并且其模制品具有良好的外观。
    • 10. 发明授权
    • Polypropylene-based resins and polypropylene-based resin compositions
    • 聚丙烯类树脂和聚丙烯类树脂组合物
    • US5985973A
    • 1999-11-16
    • US908665
    • 1997-08-06
    • Takashi SumitomoMasaru NakagawaMasatoshi TodaYutaka KobayashiMotoki Yamada
    • Takashi SumitomoMasaru NakagawaMasatoshi TodaYutaka KobayashiMotoki Yamada
    • C08L9/06C08L23/04C08L23/08C08L23/10C08L53/00C08L53/02C08K3/34C08L23/12C08L23/16
    • C08L23/10C08L23/04C08L53/00C08L53/025C08L23/0815C08L53/02C08L9/06
    • Disclosed are a polypropylene-based resin and a polypropylene-based resin composition having well-balanced, high-level flowability, stiffness and impact resistance. The polypropylene-based resin has an MI of from 30 to 70 g/10 min and a 25.degree. C. xylene-soluble content, x, of from 5 to 15% by weight, in which the 25.degree. C. xylene-soluble component is such that (a) its ethylene unit content, z, is from 20 to 30% by weight, and (b) its intrinsic viscosity, [72], indecalin at 135.degree. C. is not smaller than 2.00 dl/g, and in which the 25.degree. C. xylene-insoluble component is such that (c) its ethylene unit content, y (% by weight), satisfies the following:100y/[y.times.(1-x/100)+x].ltoreq.1.13z-16.6,(d) in GPC, the content of its constituent component having a molecular weight of not smaller than 10.sup.6 is not smaller than 2% by weight, (e) its MI is from 40 to 130 g/10 min, and (f) its stereospecificity index is not smaller than 98.5%. The resin composition comprises (A) from 45 to 90% by weight of the polypropylene-based resin, (B) from 5 to 50% by weight of an ethylenic copolymer, and (C) from 0 to 25% by weight of talc.
    • 公开了具有平衡,高水平的流动性,刚度和耐冲击性的聚丙烯基树脂和聚丙烯基树脂组合物。 聚丙烯类树脂的MI为30〜70g / 10min,25℃二甲苯可溶成分为5〜15重量%,其中25℃二甲苯可溶成分 (a)其乙烯单元含量z为20〜30重量%,(b)其特性粘度[72],在135℃下的青蒿素不小于2.00dl / g,以及 其中25℃二甲苯不溶成分为(c)其乙烯单元含量y(重量%)满足以下:100y / [yx(1-x / 100)+ x] 1.13z-16.6,(d)在GPC中,其分子量不小于106的组成成分的含量不小于2重量%,(e)其MI为40-130g / 10min, (f)立体定向指数不低于98.5%。 树脂组合物包含(A)45-90%重量的聚丙烯类树脂,(B)5-50%重量的乙烯类共聚物,(C)0-25%重量的滑石。