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1. 发明公开

EP2794679A1 A POLYETHYLENE COMPOSITION AND ARTICLES MADE THEREFROM 有权转让
标题翻译： NEAR POLYETHYLENZUSAMMENSETZUNG UND DARAUS HERGESTELLTE ARTIKEL
公开(公告)号：EP2794679A1
公开(公告)日：2014-10-29
申请号：EP12799677.5
申请日：2012-11-28
申请人： Dow Global Technologies LLC , Michie, William J., Jr. , Wright, Dale A. , Jorgensen, Robert J. , Baker, Carl F.
发明人： MICHIE, William, J., Jr. , WRIGHT, Dale, A. , JORGENSEN, Robert, J. , BAKER, Carl, F.
IPC分类号： C08F10/00
CPC分类号： C08J9/16 , C08F10/02 , C08F110/02 , Y10T428/1372 , Y10T428/2982 , C08F10/00 , C08F4/69 , C08F4/025 , C08F2500/07 , C08F2500/12 , C08F2500/18 , C08F2500/24
摘要： A polyethylene composition comprising a granular polyethylene resin characterized by a resin solid density of from 0.91 to 0.97 g/cm
3 , a ratio of intraparticle void volume to interparticle void volume of from 0.33 to 0.67, and a total resin porosity, Φtotal, of equal to or greater than 0.45 is provided. Further provided are articles made from the polyethylene composition
摘要翻译：一种聚乙烯组合物，其包含颗粒状聚乙烯树脂，其特征在于树脂固体密度为0.91至0.97g / cm 3，颗粒内空隙体积与颗粒间隙体积之比为0.33至0.67，总树脂孔隙率Φtotal等于或大于0.45。进一步提供由聚乙烯组合物制成的制品

2. 发明公开

EP1831303A2 RHEOLOGY MODIFIED POLYETHYLENE COMPOSITIONS 有权转让
标题翻译：溶血性聚乙烯松香麻黄素
公开(公告)号：EP1831303A2
公开(公告)日：2007-09-12
申请号：EP05853539.4
申请日：2005-12-09
申请人： Dow Global Technologies Inc. , Michie, William J. Jr. , Hogan, Todd A. , Martinez, Felipe F. , Neubauer, Anthony C. , Costeux, Stéphane , Chang, Dane , Kapur, Mridula
发明人： Dow Global Technologies Inc. , Michie, William J. Jr. , Hogan, Todd A. , Martinez, Felipe F. , Neubauer, Anthony C. , Costeux, Stéphane , Chang, Dane , Kapur, Mridula
IPC分类号： C08L23/04 , C08K5/43
CPC分类号： C08K5/43 , C08L23/0807 , C08L2205/02 , Y10T428/1352 , Y10T428/139 , C08L23/08 , C08L2666/06
摘要： A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component coupled with a polysulfonyl azide. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (LTD) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolymer or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same, or different, composition (that is, with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described. Compositions comprising a chromium-catalyzed ethylene polymer, coupled with a polysulfonyl azide are also described herein.

3. 发明申请

WO2007130553A3 HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, WIRE AND CABLE JACKETS MADE THEREFROM, AND METHOD OF MAKING SUCH WIRE AND CABLE JACKETS 审中-公开
公开(公告)号：WO2007130553A3
公开(公告)日：2007-11-15
申请号：PCT/US2007/010796
申请日：2007-05-02
申请人： DOW GLOBAL TECHNOLOGIES INC. , KMIEC, Chester, J. , MICHIE, William, J. Jr.,
发明人： KMIEC, Chester, J. , MICHIE, William, J. Jr.,
IPC分类号： C08L23/04 , H01B3/44
摘要： The instant invention is a high-density polyethylene composition, method of producing the same, wire and cable jackets made therefrom, and method of making such wire and cable jackets. 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 3 , and a melt index (I 21.6 ) 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 3 , and a melt index (I 2 ) in the range of 50 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I 2 ) of at least 1, a density in the range of 0.950 to 0.960 g/cm 3 , 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 3 , and a melt index (I 21.6 ) 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 3 , and a melt index (I 2 ) 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 2 ) of at least 1, a density in the range of 0.950 to 0.960 g/cm 3 , and g' of equal or greater than 1. The wire and cable jackets according to instant invention comprise the above-described inventive high-density polyethylene composition, and such wire and cable jackets may be made via extrusion.

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