发明名称 |
HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, ARTICLES MADE THEREFROM, AND METHOD OF MAKING SUCH ARTICLES |
摘要 |
The instant invention is a high-density polyethylene composition, method of producing the same, articles made therefrom, and method of making such articles. The high- density polyethylene composition of the instant invention includes a first component, and a second component. The first component is a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.915 to 0.940 g/cm<SUP>3</SUP>, and a melt index (I<SUB>21.6</SUB>) in the range of 0.5 to 10 g/10 minutes. The second component is a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm<SUP>3</SUP>, and a melt index (I2) in the range of 50 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I2) of at least 1, a density in the range of (I2) in the range of 0, 950 to 0,960g/cm<SUP>3</SUP>, and g' of equal or greater than 1. The method of producing a high-density polyethylene composition includes the following steps: (1) introducing ethylene, and one or more alpha-olefin comonomers into a first reactor; (2) (co)polymerizing the ethylene in the presence of one or more alpha-olefin comonomers in the first reactor thereby producing a first component, wherein the first component being a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.915 to 0.940 g/cm<SUP>3</SUP>, and a melt index (I<SUB>21.6</SUB>) in the range of 0.5 to 10 g/10 minutes; (3) introducing the first component and additional ethylene into a second reactor; (4) polymerizing the additional ethylene in the second reactor thereby producing a second component, wherein the second component being a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm<SUP>3</SUP>, and a melt index (I<SUB>2</SUB>) in the range of 50 to 1500 g/10 minutes; and (5) thereby producing the high-density polyethylene composition, wherein the high-density polyethylene composition having a melt index (I<SUB>2</SUB>) of at least 1, a density in the range of 0.950 to 0.960 g/cm<SUP>3</SUP>, and g' of equal or greater than 1. The articles according to instant invention comprise the above-described inventive high-density polyethylene composition, and such articles may be made via compression molding, injection molding, or injection blow molding. |
申请公布号 |
WO2007130515(A3) |
申请公布日期 |
2008.03.13 |
申请号 |
WO2007US10735 |
申请日期 |
2007.05.02 |
申请人 |
DOW GLOBAL TECHNOLOGIES INC.;MICHIE, WILLIAM, J.;KAY, THOMAS, W.;WHITED, STEPHANIE, M.;ELLEY-BRISTOW, DALE, M.;GILLESPIE, DAVID, T.;HAZLITT, LONNIE, G. |
发明人 |
MICHIE, WILLIAM, J.;KAY, THOMAS, W.;WHITED, STEPHANIE, M.;ELLEY-BRISTOW, DALE, M.;GILLESPIE, DAVID, T.;HAZLITT, LONNIE, G. |
分类号 |
C08L23/04;B65D41/00;H01B3/44 |
主分类号 |
C08L23/04 |
代理机构 |
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地址 |
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