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    • 5. 发明申请
    • POLYOLEFIN COMPOSITIONS
    • 聚烯烃组合物
    • WO2010149705A1
    • 2010-12-29
    • PCT/EP2010/058916
    • 2010-06-23
    • Basell Poliolefine Italia S.r.l.GALVAN, MonicaCIARAFONI, MarcoPANTALEONI, RobertoFERRARO, Angelo
    • GALVAN, MonicaCIARAFONI, MarcoPANTALEONI, RobertoFERRARO, Angelo
    • C08L23/10B29C45/00C08J5/18
    • C08J5/18C08J2323/10C08L23/0807C08L23/0815C08L23/10C08L2666/06
    • Polyolefin compositions particularly suitable for cast film, exhibiting heat sealability, retortability, low haze and stiffness, comprising: 1) 75-85% of a propylene homopolymer or copolymer of propylene with ethylene and/or one or more C 4 -C 10 α-olefin(s), the homopolymer or copolymer having melting temperature equal to or higher than 150°C, 2) 15-25% of a copolymer of ethylene with one or more C 4 -C 10 α-olefin(s) containing from 20 to 30% of said C 4 -C 10 α-olefin(s); said composition having MFR (at 230°C, 2.16 kg) of from 5-10 g/10 min, the total content of ethylene of from 10 to 20 %, the total content of C 4 -C 10 α-olefin(s) of from 2 to 8 %, the ratio XStot/XSm of the total fraction soluble in Xylene at room temperature to the fraction soluble in Xylene at room temperature of the matrix component (1) of from 5 to 15, and the value of the intrinsic viscosity of the total fraction soluble in Xylene at room temperature (XSIVtot) of 1.5 dl/g or less.
    • 特别适用于流延膜的聚烯烃组合物,具有热封性,蒸馏性,低雾度和刚度,包括:1)75-85%的丙烯均聚物或丙烯与乙烯和/或一种或多种C 4 -C 10α-烯烃的共聚物 s),熔融温度等于或高于150℃的均聚物或共聚物,2)乙烯与一种或多种C 20 -C 30α-烯烃的共聚物的15-25% 所述C 4 -C 10α-烯烃; 所述组合物的MFR(在230℃,2.16kg)为5-10g / 10min,乙烯的总含量为10至20%,C 4 -C 10α-烯烃的总含量为 2〜8%,室温下可溶于二甲苯的总馏分的比例XStot / XSm与基体成分(1)的室温下可溶于二甲苯的馏分的比例为5〜15,特性粘度的值 在室温下可溶于二甲苯的总馏分(XSIVtot)为1.5dl / g以下。