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    • 5. 发明授权
    • Polypropylene resin composition
    • 聚丙烯树脂组合物
    • US5621046A
    • 1997-04-15
    • US499908
    • 1995-07-11
    • Kunio IwanamiMasatoshi OhkuraSatoshi UekiShigeyuki TokiTakeyoshi NishioTakao Nomura
    • Kunio IwanamiMasatoshi OhkuraSatoshi UekiShigeyuki TokiTakeyoshi NishioTakao Nomura
    • C08K7/14C08L23/08C08L23/12C08L23/16C08L53/00C08L23/00
    • C08L23/12C08K7/14C08L2205/03C08L2205/035C08L23/0815C08L23/16C08L53/00
    • A polypropylene resin composition including (A) 50-90 parts by weight of a polypropylene resin including (a) 3-30 weight % of stereoblock polypropylene having a weight-average molecular weight of 5,000-1,000,000, a percentage of five continuous propylene monomer units in which all propylene bonds are meso bonds and a percentage of five continuous propylene monomer units in which all propylene bonds are racemic bonds being 70% or more and 5% or more, respectively relative to the all propylene bonds, and (b) 70-97 weight % of an ultra-high stereospecific polypropylene having a melt flow rate of 0.1-1,000 g/10 minutes, an average meso chain length Nm calculated from a triad percentage determined from .sup.13 C-NMR spectrum by the following formula of Nm=2[mm]/[mr]+1, wherein [mm] is (isotactic triad/total triad).times.100 (%) and [mr] is (heterotactic triad/total triad).times.100 (%), meeting a relation of Nm>250+29.5 log (MFR), and (B) 50-10 parts by weight of an olefinic rubber and/or a polyolefin other than (A).
    • 一种聚丙烯树脂组合物,其包含(A)50-90重量份的聚丙烯树脂,其包含(a)3-30重量%的重均分子量为5,000-1,000,000的立构嵌段聚丙烯,五个连续丙烯单体单元的百分比 其中所有丙烯键均为内消旋键,其中所有丙烯键为外消旋键的五个连续丙烯单体单元的百分比相对于全部丙烯键分别为70%以上且5%以上,(b)70〜 97重量%的熔体流动速率为0.1-1,000g / 10分钟的超高立体定向聚丙烯,由根据13 C-NMR光谱由下式Nm / 2确定的三单元组百分比计算的平均内消旋链长度Nm: mm] / [mr] +1,其中[mm]为(全同立构三单元组/总三元组)×100(%),[mr]为(异质三单元组/总三元组)×100(%),满足Nm> 29.5log(MFR)和(B)50-10重量份的烯烃橡胶和/或其它聚烯烃 比(A)。