Pressure Pipes and Polyolefin Composition for the Manufacture Thereof
    11.
    发明申请
    Pressure Pipes and Polyolefin Composition for the Manufacture Thereof 有权
    压力管和聚烯烃组合物的制造

    公开(公告)号:US20110245427A1

    公开(公告)日:2011-10-06

    申请号:US13139473

    申请日:2009-12-24

    IPC分类号: C08L23/14 F16L9/00

    摘要: Articles, particularly pressure pipes, having high strength as well as high stiffness and very good impact resistance even at low temperatures can be obtained by using a heterophasic polyolefin composition comprising (percent by weight) 70-90% of a random copolymer of propylene with 0.5-6% of 1-hexene, and 10-30% of a polymer of ethylene with a C3-C10 α-olefin and optionally a diene, wherein the polymer of ethylene has an ethylene content higher than 45% and an intrinsic viscosity [η] value from 3 to 5 dl/g.A particular advantage of the present invention is that articles comprising the above heterophasic polyolefin composition show a low ductile to brittle transition temperature (DBTT).

    摘要翻译: 通过使用包含(重量%)70-90%的丙烯与0.5的无规共聚物的多相聚烯烃组合物,可以获得具有高强度以及高刚度以及高耐冲击性的制品,特别是压力管, -6%的1-己烯和10-30%的乙烯与C 3 -C 10α-烯烃和任选的二烯的聚合物,其中乙烯的聚合物的乙烯含量高于45%,特性粘度[eegr ;]值为3至5dl / g。 本发明的一个特别的优点是包含上述多相聚烯烃组合物的制品显示出低的延性至脆性转变温度(DBTT)。

    Process for the preparation of soft propylene polymer compositions
    17.
    发明授权
    Process for the preparation of soft propylene polymer compositions 有权
    制备软丙烯聚合物组合物的方法

    公开(公告)号:US07981982B2

    公开(公告)日:2011-07-19

    申请号:US12451595

    申请日:2008-05-07

    IPC分类号: C08F2/34 C08F210/06

    摘要: A process for the preparation of a propylene copolymer composition having a Flexural modulus lower than 500 MPa, a total ethylene content higher than 9% and a Xylene soluble fraction at room temperature higher than 20% comprising at least one polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones said process being characterized by the fact that at least 30% by weight of said xylene soluble fraction is produced in the polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones.

    摘要翻译: 制备弯曲模量低于500MPa,总乙烯含量高于9%的丙烯共聚物组合物和室温高于20%的二甲苯可溶组分的方法,包括在气体中进行的至少一个聚合步骤 包含至少两个相互连接的聚合区的所述相相聚合反应器,所述方法的特征在于,在聚合步骤中产生至少30重量%的所述二甲苯可溶部分,所述聚合步骤在气相聚合反应器中进行,所述气相聚合反应器包括至少两个互连的 聚合区。

    PROCESS FOR THE PREPARATION OF SOFT PROPYLENE POLYMER COMPOSITIONS
    18.
    发明申请
    PROCESS FOR THE PREPARATION OF SOFT PROPYLENE POLYMER COMPOSITIONS 有权
    制备软丙烯聚合物组合物的方法

    公开(公告)号:US20100121000A1

    公开(公告)日:2010-05-13

    申请号:US12451595

    申请日:2008-05-07

    IPC分类号: C08F2/34

    摘要: A process for the preparation of a propylene copolymer composition having a Flexural modulus lower than 500 MPa, a total ethylene content higher than 9% and a Xylene soluble fraction at room temperature higher than 20% comprising at least one polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones said process being characterized by the fact that at least 30% by weight of said xylene soluble fraction is produced in the polymerization step carried out in a gas-phase polymerization reactor comprising at least two interconnected polymerization zones.

    摘要翻译: 制备弯曲模量低于500MPa,总乙烯含量高于9%的丙烯共聚物组合物和室温高于20%的二甲苯可溶组分的方法,包括在气体中进行的至少一个聚合步骤 包含至少两个相互连接的聚合区的所述相相聚合反应器,所述方法的特征在于,在聚合步骤中产生至少30重量%的所述二甲苯可溶部分,所述聚合步骤在气相聚合反应器中进行,所述气相聚合反应器包括至少两个互连的 聚合区。