公开(公告)号：US5189106A

公开(公告)日：1993-02-23

申请号：US814774

申请日：1991-12-30

申请人： Toshifumi Morimoto ,  Takaaki Hattori ,  Noboru Ikegami ,  Hirofumi Nishibu ,  Toshiyuki Miyauchi ,  Kunimichi Kubo

发明人： Toshifumi Morimoto ,  Takaaki Hattori ,  Noboru Ikegami ,  Hirofumi Nishibu ,  Toshiyuki Miyauchi ,  Kunimichi Kubo

IPC分类号： C08L23/00 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08

CPC分类号： C08L23/0815 ,  C08L2205/02

摘要： A polyethylene composition which has excellent flow characteristics and mechanical properties, especially low temperature mechanical properties as well as thermal stability, elasticity and workability for molding. The polyethylene composition comprises 20 to 80 wt. % of an ethylene-.alpha.-olefin copolymer of higher molecular weight having (a) intrinsic viscosity (.eta..sub.1) of 1.2 to 9.0 dl/g, (b) density (d.sub.1) of 0.890 to 0.935 g/cm.sup.3 (c) a specific areal ratio calculated with an elution temperature-eluate volume curve in elution fractionation, and (d) a specific quantity of the content which is soluble in 25.degree. C. o-dichlorobenzene, and 80 to 20 wt. % of ethylene homopolymer or ethylene-.alpha.-olefin copolymer of lower molecular weight having (e) intrinsic viscosity (.eta..sub.2) of 0.2 to 1.6 dl/g, (f) density (d.sub.2) of 0.890 to 0.980 g/cm.sup.3 and, wherein the above (.eta..sub.1) is larger than (.eta..sub.2), and the prepared composition has an intrinsic viscosity (.eta.) of 0.77 to 5.2 dl/g, a density (d) of 0.890 to 0.950 g/cm.sup.3 and a specific N-value of 1.7 to 3.5.

摘要翻译： 具有优异的流动特性和机械性能，特别是低温机械性能以及热稳定性，弹性和成型加工性的聚乙烯组合物。 聚乙烯组合物包含20至80wt。 （a）特性粘度（η）为1.2〜9.0dl / g，（b）密度（d1）为0.890〜0.935g / cm 3的高分子量乙烯-α-烯烃共聚物（c）特定粘度 在洗脱分级中用洗脱温度 - 洗脱液体积曲线计算的面积比，和（d）可溶于25℃邻二氯苯的含量的特定量，以及80-20重量％ （e）特性粘度（η2）为0.2〜1.6dl / g的乙烯均聚物或乙烯-α-烯烃共聚物，（f）密度（d2）为0.890〜0.980g / cm 3，其中 上述（eta 1）大于（eta 2），所制备的组合物的特性粘度（η）为0.77〜5.2dl / g，密度（d）为0.890〜0.950g / cm 3， 价值1.7到3.5。

公开(公告)号：US5260384A

公开(公告)日：1993-11-09

申请号：US941314

申请日：1992-09-04

申请人： Toshifumi Morimoto ,  Toshiyuki Miyauchi ,  Sumio Ikeda ,  Kunimichi Kubo ,  Narumi Ishikawa ,  Noboru Ikegami

发明人： Toshifumi Morimoto ,  Toshiyuki Miyauchi ,  Sumio Ikeda ,  Kunimichi Kubo ,  Narumi Ishikawa ,  Noboru Ikegami

IPC分类号： C08F297/08 ,  C08L23/00 ,  C08L23/04 ,  C08L23/08 ,  C08L23/06

CPC分类号： C08F297/08 ,  C08L23/04 ,  C08L2205/02 ,  C08L23/0815 ,  C08L2308/00

摘要： A polyethylene composition which has a wide molecular weight distribution and excellent balance among melt elasticity, flow characteristics and mechanical properties, and which is suitable for use in producing large-scaled hollow plastics articles. The composition comprises a higher molecular weight ethylene polymer or copolymer and a lower molecular weight ethylene polymer or copolymer which is specified in view of the content of o-dichlorobenzene and the ratio of the area under the elution temperature-eluate volume curve between 25.degree.to 90.degree. C. to the area under said curve of 90.degree. C. and above in temperature rising elution fractionation.

摘要翻译： 一种聚乙烯组合物，具有宽的分子量分布和熔体弹性，流动特性和机械性能之间的极好平衡，适用于生产大型中空塑料制品。 该组合物包含较高分子量的乙烯聚合物或共聚物和低分子量乙烯聚合物或共聚物，其是考虑到邻二氯苯的含量和洗脱温度 - 洗脱液体积曲线下的面积之比在25°至 90℃至90℃以上曲线下面积的升温洗脱分级。