Polypropylene resin composition and use thereof
    1.
    发明授权
    Polypropylene resin composition and use thereof 有权
    聚丙烯树脂组合物及其用途

    公开(公告)号:US06350828B1

    公开(公告)日:2002-02-26

    申请号:US09269640

    申请日:1999-03-31

    IPC分类号: C08F452

    摘要: A polypropylene resin composition exibiting a high melt tension and superior moldability, which can be molded efficiently by a high-speed molding into scarcely deformable larger molded articles of better appearance with high stiffness and which comprises polypropylene as a main component and has the following characteristic features 1) to 4), namely, 1) that a melt flow rate (MFR, determined at 230° C. under a load of 2.16 kg) is in the range of 0.01 to 5 g/10 min., 2) that a content of a high molecular weight polypropylene exhibiting an intrinsic viscosity [&eegr;], determined at 135° C. in decalin, of 8-13 dl/g is in the range of 15 to 50% by weight, 3) that a gel areal density in number is 3,000/450 cm2 or less and 4) that a molecular weight distribution determined by gel permeation chromatography (GPC) is 6-20, as expressed by Mw/Mn, and is 3.5 or higher, as expressed by Mz/Mw.

    摘要翻译: 一种聚丙烯树脂组合物,其具有高熔体张力和优异的成型性,其可以通过高速成型有效地模塑成具有高刚度的更好外观的几乎不变形的较大模制品,并且其包含聚丙烯作为主要组分,并且具有以下特征 1)至4),即1)熔体流动速率(MFR,在230℃,2.16kg负荷下测定)在0.01至5g / 10min的范围内,2)含量 的显示特性粘度η(在萘烷中在135℃下测定)为8-13dl / g的高分子量聚丙烯在15至50重量%的范围内,3)凝胶面积密度 数量为3000 / 450cm2以下,4)通过凝胶渗透色谱法(GPC)测定的分子量分布为6〜20,以Mw / Mn表示,为3.5以上,以Mz / Mw表示。

    Resin composition based on crystalline polypropylene
    2.
    发明授权
    Resin composition based on crystalline polypropylene 有权
    基于结晶聚丙烯的树脂组合物

    公开(公告)号:US06759475B2

    公开(公告)日:2004-07-06

    申请号:US09881677

    申请日:2001-06-18

    IPC分类号: C08I2300

    摘要: The present invention provides a resin composition based on crystalline polypropylene which includes: (a) 3-65% by weight of a component soluble in paraxylene of 23° C., (b) 35-97% by weight of a component soluble in paraxylene of 135° C. and insoluble in paraxylene of 23° C., and (c) 0-30% by weight of a compoent insoluble in paraxylene of 135° C. The component (a) soluble in paraxylene of 23° C. is composed substantially of an elastomeric constituent (a1) having a content of styrene or its derivative in the range of 0-35% by weight and an intrinsic viscosity (n) in the range of 0.1-5 dl/g, the component (b) soluble is paraxylene of 135° C. and insoluble in paraxylene of 23° C. is composed substantially of a crystalline polyproylene constituent (b1) having an isotactic pentad proportion (mmmm) of 97% or higher, a molecular weight distribution (Mw/Mn) of 6 or higher and a molecular weight distribution (Mz/Mw) of 6 or higher and the component (c) insoluble in paraxylene of 135° C. is composed substantially of a filler (c1).

    摘要翻译: 本发明提供了一种基于结晶聚丙烯的树脂组合物,其包括:(a)3-55重量%的可溶于23℃的对二甲苯的组分,(b)35-97重量%的可溶于对二甲苯的组分 135℃的对二甲苯不溶,(c)0-30重量%的不溶于135℃的对二甲苯的组分。可溶于23℃的对二甲苯的组分(a)为 基本上由具有0-35重量%的苯乙烯或其衍生物的含量的特性粘度(n)在0.1-5dl / g范围内的组分(a)组成的弹性体组分(a1) 可溶性为135℃的对二甲苯并且不溶于23℃的对二甲苯基本上由全同立构五单元比例(mmmm)为97%以上的结晶性聚亚
    烷基成分(b1)构成,分子量分布(Mw / Mn )为6以上,分子量分布(Mz / Mw)为6以上,成分(c)不溶于对二甲苯为135° C.基本上由填料(c1)组成。

    Polypropylene block-copolymer resin and process for producing it
    3.
    发明授权
    Polypropylene block-copolymer resin and process for producing it 有权
    聚丙烯嵌段共聚物树脂及其制备方法

    公开(公告)号:US06306973B1

    公开(公告)日:2001-10-23

    申请号:US09497227

    申请日:2000-02-03

    IPC分类号: C08L2312

    摘要: Polypropylene block-copolymer resin exhibiting high melt tension and improved moldability with balanced stiffness and impact resistance may be molded at high speed into large-sized articles, including, stretched films, with good appearance and resistance to deformation. The block copolymer includes a higher molecular weight polypropylene segment, a lower molecular weight polypropylene segment and an ethylene &agr;-olefin copolymer segment. When subjected to dissolution fractionation m paraxylene, a large proportion is insoluble at 23° C. but soluble at 135° C., and a smaller portion is soluble at 23° C. The block copolymer has a melt flow rate of 0.01 to 5 g/10 min at 230 C. (2.16 kg) and a molecular weight distribution Mw/Mn of 6-20 and Mz/Mw of at least 3.5. A continuous multistage polymerization may be used to form the block copolymer.

    摘要翻译: 具有高熔体张力和改善的成型性,具有均衡的刚度和抗冲击性的聚丙烯嵌段共聚物树脂可以高速模塑成大尺寸的制品,包括具有良好外观和抗变形性的拉伸膜。 嵌段共聚物包括较高分子量的聚丙烯链段,较低分子量的聚丙烯链段和乙烯α-烯烃共聚物链段。 当对二甲苯进行溶解分馏时,大部分在23℃下不溶,但在135℃可溶,较小部分在23℃下溶解。嵌段共聚物的熔体流动速率为0.01〜5g 在230℃下10分钟(2.16kg),分子量分布Mw / Mn为6-20,Mz / Mw至少为3.5。 连续多级聚合可用于形成嵌段共聚物。