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    • 16. 发明公开
    • Heterophasic copolymer
    • 异种共聚物
    • EP2824142A1
    • 2015-01-14
    • EP13176366.6
    • 2013-07-12
    • Borealis AG
    • Resconi, LuigiTöltsch, Wilfried
    • C08L23/10C08L23/14C08L23/16
    • C08L23/10C08F4/65912C08L23/14C08L23/16C08L2207/02C08F10/00C08F4/65927C08F210/06C08F2/001C08F2500/12
    • A heterophasic propylene ethylene copolymer having an MFR 2 of 0.5 to 100 g/10min and obtained using single site catalysis comprising:
      (i) at least 40 wt% of a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt% comonomer;
      (ii) at least 10 wt% of an ethylene propylene rubber dispersed in the matrix,
      said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 12 to 60 %;
      wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 18 and 70 wt.%; and
      wherein the intrinsic viscosity of the XS fraction of said heterophasic propylene ethylene copolymer is greater than the intrinsic viscosity of the matrix fraction of said copolymer.
    • MFR 2为0.5-100g / 10min且使用单点催化得到的多相丙烯乙烯共聚物,包括:(i)至少40wt%的具有至多4wt%共聚单体的丙烯均聚物或丙烯乙烯共聚物基体; (ii)至少10重量%的分散在基质中的乙丙橡胶,所述多相丙烯乙烯共聚物具有12至60%的二甲苯冷可溶物含量(XS); 其中所述多相丙烯乙烯共聚物的二甲苯冷可溶部分的乙烯含量为18至70重量%; 并且其中所述多相丙烯乙烯共聚物的XS部分的特性粘度大于所述共聚物的基体部分的特性粘度。