Polypropylene of improved processability for production of pipes
    1.
    发明公开
    Polypropylene of improved processability for production of pipes 有权
    Polypropylen mit verbesserter Verarbeitbarkeit zur Herstellung von Rohren

    公开(公告)号:EP1724303A1

    公开(公告)日:2006-11-22

    申请号:EP05010973.5

    申请日:2005-05-20

    IPC分类号: C08L23/10 C08L23/12

    摘要: The present invention relates to a polymer composition, comprising
    (i) a polypropylene-based matrix which comprises a polypropylene random copolymer prepared by copolymerization of propylene with an olefin comonomer, wherein the amount of olefin comonomer units is within the range of 0.2 wt% to 5 wt%, based on the weight of the polypropylene-based matrix, and
    (ii) an elastomeric copolymer of propylene and at least one olefin comonomer, the polymer composition having a storage modulus G' at a loss modulus G"=5 kPa of G'(5 kPa) ≤ 3100 Pa, measured at 220°C.

    摘要翻译: 本发明涉及一种聚合物组合物,其包含(i)聚丙烯基基质,其包含通过丙烯与烯烃共聚单体共聚制备的聚丙烯无规共聚物,其中烯烃共聚单体单元的量在0.2重量%至 5重量%,基于聚丙烯基基质的重量,和(ii)丙烯和至少一种烯烃共聚单体的弹性共聚物,聚合物组合物的损耗模量G“= 5kPa下的储能模量G' G'(5 kPa)‰³3100 Pa,在220°C测量。

    A pressureless polymer pipe
    5.
    发明公开
    A pressureless polymer pipe 有权
    Ein druckloses Polymerrohr

    公开(公告)号:EP1584852A1

    公开(公告)日:2005-10-12

    申请号:EP04008180.4

    申请日:2004-04-03

    IPC分类号: F16L9/12 C08F210/16 C08L23/08

    摘要: A pressureless pipe and polymer composition for making such a pipe as well as the use of the polymer composition for pressureless pipes and supplementary parts, are disclosed. The polymer composition is characterised in that
       the polymer comprises a multimodal ethylene polymer including a copolymer of ethylene and a C 4 -C 10 α-olefin comonomer;
       the ethylene polymer has a total density of at least 950 kg/m 3 and a MFR 5 of 0.2-2.0 g/10 min;
       the ethylene polymer has a modulus of elasticity, determined according to ISO 178 of more than 1200 MPa;
       the ethylene polymer has a resistance to slow crack growth, determined according to ASTM F 1473 of more than 1.5 hrs.

    摘要翻译: 公开了一种用于制造这种管子的无压管和聚合物组合物以及用于无压管和辅助部件的聚合物组合物的用途。 聚合物组合物的特征在于聚合物包含多乙烯聚合物,其包括乙烯和C 4 -C 10α-烯烃共聚单体的共聚物; 乙烯聚合物的总密度为至少950kg / m 3,MFR 5为0.2-2.0g / 10min; 乙烯聚合物的弹性模量根据ISO 178测定超过1200MPa; 乙烯聚合物具有耐缓慢裂纹生长,根据ASTM F 1473测定超过1.5小时。