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    • 4. 发明申请
    • POLYPROPYLENE RESIN COMPOSITIONS FOR AUTOMOBILE PARTS
    • 用于汽车零件的聚丙烯树脂组合物
    • US20100311894A1
    • 2010-12-09
    • US12741480
    • 2008-10-27
    • Yoshiaki TsukaharaIkunori SakaiYoshio SugimotoSatoko ToeiNoriaki Fujiyama
    • Yoshiaki TsukaharaIkunori SakaiYoshio SugimotoSatoko ToeiNoriaki Fujiyama
    • C08L53/00B29C45/00
    • C08L53/00C08F297/08C08F297/083C08L23/0815C08L23/10C08L23/12C08L2666/02C08L2666/24C08L2666/04
    • A polypropylene resin composition includes: 14 to 39 wt % of a propylene block copolymer (A-1) having MFR of 1 to 200 g/10 min, the propylene block copolymer comprising 70 to 95 wt % of a room temperature n-decane insoluble part (Dinsol (1)) and 5 to 30 wt % of a room temperature n-decane soluble part (Dsol (1)), the Dinsol (1) having a mmmm fraction of not less than 97%, the Dsol (1) having [η] of 4 to 10 dl/g; 20 to 60 wt % of a propylene block copolymer (A-2) having MFR of 1 to 200 g/10 min, the propylene block copolymer comprising 70 to 95 wt % of a room temperature n-decane insoluble part (Dinsol (2)) and 5 to 30 wt % of a room temperature n-decane soluble part (Dsol (2)), the Dinsol (2) having a mmmm fraction of not less than 97%, the Dsol (2) having [η] of 1.5 to 4 dl/g; 5 to 30 wt % of an ethylene/α-olefin copolymer rubber (B); and 10 to 30 wt % of an inorganic filler (C).The polypropylene resin composition can produce injection molded articles having excellent rigidity and impact resistance, less weld lines and flow marks and good appearance and are suitable for producing automobile parts.
    • 聚丙烯树脂组合物包括:14〜39重量%的MFR为1〜200g / 10分钟的丙烯嵌段共聚物(A-1),丙烯嵌段共聚物包含70〜95重量%的室温正癸烷不溶性 部分(D insol(1))和5-30wt%的室温正癸烷可溶部分(Dsol(1)),D insol(1)的mmmm分数不小于97%,Dsol(1) 具有4至10 dl / g的[&eegr] 20〜60重量%的MFR为1〜200g / 10分钟的丙烯嵌段共聚物(A-2),丙烯嵌段共聚物含有70〜95重量%的室温正癸烷不溶成分(D insol(2) )和5〜30重量%的室温正癸烷可溶部分(Dsol(2)),D insol(2)的mmmm分数不小于97%,Dsol(2)具有[ 1.5〜4dl / g; 5〜30重量%的乙烯/α-烯烃共聚物橡胶(B); 和10〜30重量%的无机填料(C)。 聚丙烯树脂组合物可以制造具有优异的刚性和耐冲击性,较少的焊接线和流痕以及良好外观的注塑制品,并且适用于生产汽车部件。