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    Polyethylene moulding compound with an improved ESCR/stiffness relation and an improved swelling rate, a method for the production thereof and the use thereof
    1.
    发明授权
    Polyethylene moulding compound with an improved ESCR/stiffness relation and an improved swelling rate, a method for the production thereof and the use thereof 有权
    具有改善的ESCR /刚度关系和改善的溶胀速率的聚乙烯模塑料，其制备方法及其用途

    公开(公告)号：US06713561B1

    公开(公告)日：2004-03-30

    申请号：US10088855

    申请日：2002-03-21

    申请人： Joachim Berthold ,  Ludwig Böhm ,  Johannes-Friedrich Enderle ,  Reinhard Schubbach

    发明人： Joachim Berthold ,  Ludwig Böhm ,  Johannes-Friedrich Enderle ,  Reinhard Schubbach

    IPC分类号： C08F1002

    CPC分类号： C08L23/04 ,  C08F10/02 ,  C08F110/02 ,  C08L23/06 ,  C08L2308/00 ,  C08F2/001 ,  C08L2666/04 ,  C08F2500/13 ,  C08F2500/05 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/07 ,  C08F2500/26

    摘要： The invention relates to a polyethylene moulding compound having a multimodal molecular weight distribution which has an overall density of ≧0.940 g/cm3 and an MFI190/5 in the range from 0.01 to 10 dg/min. The moulding compound according to the invention comprises an amount of from 30 to 60% by weight of low-molecular-weight ethylene homopolymer A which has a viscosity number VNA in the range from 40 to 150 cm3/g, an amount of from 30 to 65% by weight of high-molecular-weight copolymer B comprising ethylene and a further olefin having from 4 to 10 carbon atoms which has a viscosity number VNB in the range from 150 to 800 cm3/g, and an amount of from 1 to 30% by weight of ultrahigh-molecular-weight ethylene homopolymer C which has a viscosity number VNC in the range from 900 to 3000 cm3/g. The invention also relates to a method for the production of the moulding compound in a three-step process, and to the use thereof for the production of hollow articles.

    摘要翻译： 本发明涉及具有多峰分子量分布的聚乙烯模塑料，其总密度≥0.940g/ cm 3，MFI190 / 5在0.01至10dg / min的范围内。 根据本发明的模塑料包含30至60重量％的粘度值VNA在40至150cm 3 / g范围内的低分子量乙烯均聚物A的量， 30至65重量％的包含乙烯和另外具有4-10个碳原子的烯烃的高分子量共聚物B，其粘度VNB在150至800cm 3 / g的范围内， 量为1至30重量％的超高分子量乙烯均聚物C，其粘度值VNC为900-3000cm 3 / g。本发明还涉及一种生产 模塑料在三步法中的用途，以及其用于生产中空制品的用途。

    Polyethylene molding material and pipe produced therewith with improved mechanical properties
    4.
    发明授权
    Polyethylene molding material and pipe produced therewith with improved mechanical properties 有权
    聚乙烯成型材料及其制造的管材具有改善的机械性能

    公开(公告)号：US06770341B1

    公开(公告)日：2004-08-03

    申请号：US10018764

    申请日：2001-12-17

    申请人： Ludwig Böhm ,  Joachim Berthold ,  Johannes-Friedrich Enderle ,  Elke Damm ,  Ulrich Schulte

    发明人： Ludwig Böhm ,  Joachim Berthold ,  Johannes-Friedrich Enderle ,  Elke Damm ,  Ulrich Schulte

    IPC分类号： C08L2304

    CPC分类号： C09D123/04 ,  Y10T428/1352 ,  Y10T428/1397 ,  C08L2666/02 ,  C08L2666/04

    摘要： A polyethylene molding material has a bimodal molecular weight distribution with an overall density of ≧0.948 g/cm3 and a melt flow index MFI190/5 of ≦0.2 dg/min. The molding material comprises from 35 to 65% by weight of low-molecular-weight ethylene hompolymer A having a viscosity number VNA in the range from 40 to 90 cm3/g, a melt flow index MFI190/2.16 A in the range from 40 to 2000 dg/min and a density dA of ≧0.965 g/cm3. Also included is from 35 to 65% by weight of high-molecular-weight ethylene copolymer B having a viscosity number VNB in the range from 500 to 2000 cm3/g, a melt flow index MFI190/5 B in the range from 0.02 to 0.2 dg/min and a density dB in the range from 0.922 to 0.944 g/cm3.

    摘要翻译： 聚乙烯成型材料具有总密度> = 0.948g / cm 3和<= 0.2dg / min的熔体流动指数MFI190 / 5的双峰分子量分布。 成型材料包含35至65重量％的粘度值VNA在40至90cm 3 / g范围内的低分子量乙烯均聚物A，熔体流动指数MFI190 / 2.16A范围内 40至2000dg / min，密度dA> 0.965g / cm 3。 还包括35至65重量％的粘度数VNB在500至2000cm 3 / g范围内的高分子量乙烯共聚物B，熔体流动指数MFI190 / 5B在从 0.02至0.2dg / min，密度dB在0.922至0.944g / cm 3的范围内。

    Polyethylene molding compound suitable as a pipe material with excellent processing properties
    7.
    发明授权
    Polyethylene molding compound suitable as a pipe material with excellent processing properties 失效
    聚乙烯模塑料适合作为具有优良加工性能的管材

    公开(公告)号：US06841621B2

    公开(公告)日：2005-01-11

    申请号：US10381246

    申请日：2001-09-08

    申请人： Peter Krümpel ,  Johannes-Friedrich Enderle

    发明人： Peter Krümpel ,  Johannes-Friedrich Enderle

    IPC分类号： C08J3/20 ,  C08L23/08 ,  C08L23/00 ,  C08L23/04 ,  E21B17/10 ,  F16L9/22

    CPC分类号： C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  Y10S138/07 ,  Y10T428/139 ,  C08L2666/04

    摘要： The invention relates to a polymeric molding compound made from a first ethylene polymer (A) and from a second ethylene polymer (B) which is particularly suitable for producing thick-walled large-caliber pipes, wherein the molding compound comprises an amount in the range from 55 to 75% by weight of the first ethylene polymer (A) and an amount in the range from 25 to 45% by weight of the second ethylene polymer (B), based in each case on the total weight of the molding compound, where the first ethylene polymer (A) is a copolymer of ethylene with a 1-olefin having a total number of carbon atoms in the range from 4 to 10 as comonomer, and with a proportion of from 0.2 to 5% by weight of comonomer, based on the weight of the first ethylene polymer (A), and with a wide bimodal molar mass distribution, and where the second ethylene polymer (B) is a copolymer made from ethylene units and from a 1-olefin having a number of carbon atoms in the range from 4 to 10, which has a bimodal molar mass distribution differing from that of the first ethylene polymer (A). The invention further relates to a high-strength pipe made from this molding compound, and to its use for the transport of gas or water.

    摘要翻译： 本发明涉及由第一乙烯聚合物（A）和第二乙烯聚合物（B）制成的聚合物模塑料，其特别适用于生产厚壁大口径管，其中模塑料包含的范围 55重量％至75重量％的第一乙烯聚合物（A），其量为第二乙烯聚合物（B）的25至45重量％，基于每种情况下的模塑料的总重量， 其中第一乙烯聚合物（A）是乙烯与总共碳原子数为4至10的共聚单体的1-烯烃的共聚物，和比例为0.2-5％（重量）的共聚单体， 基于第一乙烯聚合物（A）的重量，并且具有宽的双峰摩尔质量分布，并且其中第二乙烯聚合物（B）是由乙烯单元和具有多个碳原子的1-烯烃制成的共聚物 在4至10的范围内，其具有双峰摩尔数 的分布不同于第一乙烯聚合物（A）的分布。 本发明还涉及由该模塑料制成的高强度管及其用于输送气体或水的用途。