POLYOLEFIN COMPOSITION FOR WATER PIPES WITH GOOD RESISTANCE TO CHLORINE DIOXIDE AND LOW MIGRATION
    4.
    发明申请
    POLYOLEFIN COMPOSITION FOR WATER PIPES WITH GOOD RESISTANCE TO CHLORINE DIOXIDE AND LOW MIGRATION 有权
    用于具有良好耐二氧化氯和低迁移率的水管的聚烯烃组合物

    公开(公告)号:US20110257311A1

    公开(公告)日:2011-10-20

    申请号:US13141660

    申请日:2009-12-17

    IPC分类号: C08K5/1545 F15D1/00

    摘要: The present invention relates to a polyolefin composition with good resistance to degradation caused by chlorine dioxide-containing water and at the same time showing low migration of the used additives and its decomposition products, especially phenols, out of the composition. The present invention is also directed to a pipe made of such a polyolefin composition. The present invention further relates to the use of the polyolefin composition for the production of a pipe and to the use of a combination of particular types of antioxidants for increasing the resistance of a polyolefin composition against degradation caused by contact with chlorine dioxide-containing water and for maintaining at the same time a low migration of the used additives and its decomposition products, especially phenols, out of the polyolefin composition.

    摘要翻译: 本发明涉及具有良好的耐二氧化氯含量的降解性的聚烯烃组合物,同时显示了组合物中所使用的添加剂及其分解产物(特别是酚)的迁移率低。 本发明还涉及一种由这种聚烯烃组合物制成的管。 本发明还涉及聚烯烃组合物在制造管道中的用途,以及使用特定类型的抗氧化剂的组合来提高聚烯烃组合物抵抗由于与含二氧化氯的水接触引起的降解的阻力,以及 用于同时维持使用的添加剂及其分解产物(特别是酚)从聚烯烃组合物中的低迁移。

    POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY
    5.
    发明申请
    POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY 有权
    用于具有增强柔性的压力管的聚乙烯组合物

    公开(公告)号:US20100040819A1

    公开(公告)日:2010-02-18

    申请号:US12440813

    申请日:2007-09-28

    IPC分类号: B32B1/08 C08L23/06

    摘要: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress η2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

    摘要翻译: 本发明涉及包含基础树脂的聚乙烯组合物,其包含(a)乙烯均聚物或共聚物部分(A); 和(b)乙烯均聚物或共聚物部分(B),其中(i)级分(A)具有比级分(B)更低的重均分子量; (ii)基础树脂的密度为932至938kg / m 3; (iii)聚乙烯组合物的MFR 5为0.1〜0.6g / 10分钟; 和(iv)聚乙烯组合物具有剪切应力,2.7kPa为85〜230kPa·s。 此外,本发明涉及一种制品,优选包括所述组合物的管和用于生产制品,优选管的所述组合物的用途。