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    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF PRODUCING THE SAME, CLOSURE DEVICES MADE THEREFROM, AND METHOD OF MAKING SUCH CLOSURE DEVICES
    10.
    发明申请
    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF PRODUCING THE SAME, CLOSURE DEVICES MADE THEREFROM, AND METHOD OF MAKING SUCH CLOSURE DEVICES 有权
    高密度聚乙烯组合物，其制造方法，其制造的闭合装置以及制造这种封闭装置的方法

    公开(公告)号：US20120022214A1

    公开(公告)日：2012-01-26

    申请号：US13144465

    申请日：2010-01-27

    申请人： Mark B. Davis ,  Dale M. Elley-Bristow ,  William J. Michie, JR. ,  Stephanie M. Whited ,  Theresa J. Hermel-Davidock

    发明人： Mark B. Davis ,  Dale M. Elley-Bristow ,  William J. Michie, JR. ,  Stephanie M. Whited ,  Theresa J. Hermel-Davidock

    IPC分类号： C08L23/08

    CPC分类号： C08L23/04 ,  C08F2/001 ,  C08F297/08 ,  C08F297/083 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2205/06 ,  C08L2666/06

    摘要： The instant invention is a high-density polyethylene composition, method of producing the same, closure devices made therefrom, and method of making such closure devices. The high-density polyethylene composition according to the present invention comprises (a) a first component comprising a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.927 to 0.938 g/cm3, and a melt flow rate (I21) in the range of 4 to 10 g/10 minutes, and (b) a second component comprising a low molecular weight ethylene polymer having a density in the range of 0.960 to 0.975 g/cm3, and a melt index (I2) in the range of 100 to 1200 g/10 minutes; and wherein the high-density polyethylene composition has a melt index (I2) in the range of from 2 to 10 g/10 minutes, a density in the range of from 0.950 to 0.960 g/cm3, and a flow direction shrinkage to cross flow direction shrinkage ratio in the range of from 2 to 3.2, and an environmental stress crack resistance (ESCR) (F50) according to ASTM D-1693, condition B at 50° C., and using 10 percent Branched Octylphenoxy Poly (Ethyleneoxy) Ethanol, in the range of equal to or greater than 50 hours.

    摘要翻译： 本发明是高密度聚乙烯组合物，其制造方法，由其制成的封闭装置，以及制造这种闭合装置的方法。 根据本发明的高密度聚乙烯组合物包含（a）包含密度在0.927至0.938g / cm 3范围内的高分子量乙烯α-烯烃共聚物和熔体流动速率（I21）的第一组分， 在4至10g / 10分钟的范围内，和（b）包含密度在0.960至0.975g / cm 3范围内的低分子量乙烯聚合物的第二组分和在该范围内的熔体指数（I 2） 为100〜1200g / 10分钟; 并且其中所述高密度聚乙烯组合物具有在2至10g / 10分钟范围内的熔体指数（I 2），在0.950至0.960g / cm 3范围内的密度和横向流动方向收缩 方向收缩率在2至3.2范围内，以及根据ASTM D-1693，条件B在50℃下的环境应力开裂抗力（ESCR）（F50），并使用10％的支链辛基苯氧基聚（乙烯氧基）乙醇 在等于或大于50小时的范围内。