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    • 9. 发明申请
    • PROCESS FOR THE PREPARATION OF FLOWABLE COMONOMER RICH POLYPROPYLENE
    • 制备流动性丰富的聚丙烯的方法
    • WO2011117224A1
    • 2011-09-29
    • PCT/EP2011/054312
    • 2011-03-22
    • BOREALIS AGTUOMINEN, OlliMALM, BoLESKINEN, Pauli
    • TUOMINEN, OlliMALM, BoLESKINEN, Pauli
    • C08F10/06C08F2/00C08F297/08C08L23/14C08F210/06
    • C08F210/06C08F110/06C08L23/14C08L23/16C08L2205/025C08L2205/03C08L2308/00C08F2/001C08F210/16C08F2500/12C08F2500/17
    • Process for producing a polypropylene composition, said composition comprises units derived from propylene and at least one C2 to C20 a -olefin other than propylene in an amount of at least 4.0 wt- % measured by Fourier transform infrared spectroscopy and given in wt.-%, and said process comprises the steps of producing in at least one first reactor a first polypropylene having a xylene cold soluble (XCS) content not exceeding 4.0 wt.-%, transferring said first polypropylene in a second reactor, producing in the second reactor in the presence of the first polypropylene a second polypropylene thereby obtaining a first polypropylene composition, said second polypropylene comprises units derived from propylene and at least one C2 to C20 a -olefin other than propylene in an amount of at least 9.0 wt-%, transferring said first polypropylene composition to a third reactor, producing in the third reactor in the presence of the first polypropylene composition a third polypropylene thereby obtaining the polypropylene composition, wherein said third polypropylene has a xylene cold soluble (XCS) content of below 9.0 wt- %, or • the intrinsic viscosity (IV) of the amorphous part (AM) of the xylene cold soluble (XCS) fraction of the third polypropylene is at least 3 dl/g.
    • 用于生产聚丙烯组合物的方法,所述组合物包含通过傅里叶变换红外光谱测量并且以重量%计的衍生自丙烯和至少一种丙烯以外的至少4.0重量%的至少4.0重量%的C 2 -C 20α-烯烃的单元, ,并且所述方法包括以下步骤:在至少一个第一反应器中生产具有不超过4.0重量%的二甲苯冷可溶物(XCS)含量的第一聚丙烯,在第二反应器中转移所述第一聚丙烯,在第二反应器中生产 第一聚丙烯存在第二聚丙烯,从而获得第一聚丙烯组合物,所述第二聚丙烯包含衍生自丙烯和至少一种量至少为9.0重量%的丙烯以外的至少一种C 2至C 20α-烯烃的单元,将所述 将第一聚丙烯组合物加入到第三反应器中,在第三聚丙烯组合物存在下在第三反应器中制备第三聚丙烯,由此得到 其中所述第三聚丙烯具有低于9.0重量%的二甲苯冷可溶物(XCS)含量,或者二甲苯冷可溶(XCS)部分的无定形部分(AM)的特性粘度(IV) 第三聚丙烯为至少3dl / g。