High Performance Moisture Barrier Films at Lower Densities
    92.
    发明申请
    High Performance Moisture Barrier Films at Lower Densities 审中-公开
    高性能防潮膜在较低密度下

    公开(公告)号:US20150322184A1

    公开(公告)日:2015-11-12

    申请号:US14278303

    申请日:2014-05-15

    IPC分类号: C08F210/14 B65D81/34 C08J5/18

    摘要: A metallocene-catalyzed polyethylene copolymer having a zero shear viscosity (ηo) of from about 1×102 Pa-s to about 5×103 Pa-s and a ratio of a z-average molecular weight to a number average molecular weight (Mz/Mn) of from about 4 to about 15, and when tested in accordance with ASTM F1249 displays a moisture vapor transmission rate of less than or equal to about 0.9 g-mil/100 in2/day. A metallocene-catalyzed polyethylene copolymer which when tested in accordance with ASTM F1249 has a moisture vapor transmission rate (MVTR) that is decreased by at least 5% when compared to an MVTR determined in accordance with ASTM F1249 of an otherwise similar metallocene-catalyzed polyethylene homopolymer.

    摘要翻译: 具有约1×102Pa·s至约5×10 3 Pa·s的零剪切粘度(&eegr o)的茂金属催化的聚乙烯共聚物和z-平均分子量与数均分子量的比( Mz / Mn)为约4至约15,并且当根据ASTM F1249测试时,显示小于或等于约0.9g-mil / 100in2 /天的水蒸汽透过率。 茂金属催化的聚乙烯共聚物当根据ASTM F1249测试时具有与根据ASTM F1249测定的另一种类似的茂金属催化聚乙烯的MVTR相比降低至少5%的水蒸汽透过率(MVTR) 均聚物