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    Use of polyethylene compositions
    1.
    发明申请
    Use of polyethylene compositions 审中-公开
    使用聚乙烯组合物

    公开(公告)号：US20060241256A1

    公开(公告)日：2006-10-26

    申请号：US10535862

    申请日：2003-11-26

    申请人： Hege Baann ,  Svein Eggen ,  Hans Eklind ,  Irene Helland ,  Solveig Johansson ,  Bernt-Ake Sultan ,  Anneli Malmberg ,  Katrin Nord-Varhaug ,  Philipp Walter

    发明人： Hege Baann ,  Svein Eggen ,  Hans Eklind ,  Irene Helland ,  Solveig Johansson ,  Bernt-Ake Sultan ,  Anneli Malmberg ,  Katrin Nord-Varhaug ,  Philipp Walter

    IPC分类号： C08F4/72

    CPC分类号： C08L23/0815 ,  C08L2205/02 ,  C08L2666/06

    摘要： The use in the manufacture of a polyethylene article of a polyethylene composition comprising 20 to 50% wt of a copolymer of ethylene and a C3-20 alpha olefin comonomer and 50 to 80% wt. Of a lower weight average molecular weight ethylene polymer, the polyethylenes of the composition together having a density of 935 to 965 kg/m3, weight average molecular weight of 60000 to 300000 g/mol, an MFR2.16 at 190° C. of 0.1 to 10 g/10 min., and a molecular weight distribution (MWD) of from 2.5 to 20, the copolymer having a comonomer content of from 0.006 to 9 mol % and a degree of branching of 0.03 to 45 branches per 1000 carbons, and the ethylene polymer having a density of 939 to 975 kg/m3 and a weight average molecular weight of 20000 to 200000 g/mol.

    摘要翻译： 在制造聚乙烯组合物的聚乙烯制品中的用途，其包含20至50重量％的乙烯和C 3-20α-烯烃共聚单体的共聚物和50至80重量％ 在较低重均分子量的乙烯聚合物中，组合物的聚乙烯一起具有935至965kg / m 3的密度，重均分子量为60000至300000g / mol，MFR < 在190℃，SUB> 2.16 <0.1 / 10分钟，分子量分布（MWD）为2.5〜20，共聚单体含量为0.006〜9摩尔％，共聚单体含量为0.006〜9摩尔％ 支链度为0.03〜45分/ 1000个碳原子，乙烯聚合物的密度为939〜975kg / m 3，重均分子量为20000〜200000g / mol。

    Method of compounding a multimodal polymer composition
    4.
    发明授权
    Method of compounding a multimodal polymer composition 失效
    配合多峰聚合物组合物的方法

    公开(公告)号：US6031027A

    公开(公告)日：2000-02-29

    申请号：US285167

    申请日：1999-03-26

    申请人： Arne Syre ,  Carl-Gustaf Ek ,  Aimo Sahila ,  Svein Eggen ,  Rune Nygaard ,  Ilka Vaara ,  Kristen Kjeldsen

    发明人： Arne Syre ,  Carl-Gustaf Ek ,  Aimo Sahila ,  Svein Eggen ,  Rune Nygaard ,  Ilka Vaara ,  Kristen Kjeldsen

    IPC分类号： B29C47/76 ,  B29C47/78

    CPC分类号： B29C47/76 ,  B29C47/0009 ,  B29C47/822

    摘要： A method of compounding a multimodal, preferably a bimodal polymer composition comprising a low molecular weight ethylene polymer and a high molecular weight ethylene polymer is described. The composition is compounded during a relatively long time at a low temperature which lies in a narrow temperature range including the melting point of the low molecular weight ethylene polymer. More particularly, the polymer composition is compounded, without addition of a beat transfer medium, in a temperature range from about 10.degree. C. below to about 10.degree. C. above the melting point of the low molecular weight ethylene polymer during a time of more than 10 seconds. The viscosity ratio between the ethylene polymers in said temperature range preferably is from about 5:1 to about 1:5.

    摘要翻译： 描述了一种混合多峰，优选包含低分子量乙烯聚合物和高分子量乙烯聚合物的双峰聚合物组合物的方法。 该组合物在相当长的时间内在低温下复合，该低温位于包括低分子量乙烯聚合物的熔点的窄温度范围内。 更具体地说，聚合物组合物在不加入转印介质的情况下，在低分子量乙烯聚合物的熔点以下约10℃至约10℃的温度范围内，在更多的时间 超过10秒。 所述温度范围内的乙烯聚合物之间的粘度比优选为约5:1至约1:5。

    Homogenizing multimodal polymer
    7.
    发明申请
    Homogenizing multimodal polymer 审中-公开
    均质多峰聚合物

    公开(公告)号：US20050127559A1

    公开(公告)日：2005-06-16

    申请号：US10507494

    申请日：2003-03-13

    申请人： Svein Eggen ,  Arne Syre

    发明人： Svein Eggen ,  Arne Syre

    IPC分类号： C08J3/18 ,  B29B7/00 ,  B29B7/48 ,  B29C47/40 ,  B29K23/00 ,  B29C47/38 ,  B29C47/60

    CPC分类号： B29B7/007 ,  B29B7/488 ,  B29C48/04 ,  B29C48/395 ,  B29C48/402 ,  B29C48/535 ,  B29K2023/12

    摘要： A method of homogenizing polypropylene using twin counter-rotating screws with a melting stage and a separate downstream mixing phase. The polypropylene is melted to at least 5° C. above its melting point in the melting stage and passed through a gate valve into the mixing section. The elongational stress applied to the polymer in the mixing section is at least 20% greater than that of conventional counter-rotating extruders and causes a Henchy strain of between 1.5 and 2.5 in the polymer. This causes significant strain hardening within the polymer sufficient to break up gels within the polypropylene, thereby producing a polymer with no visible white spots.

    摘要翻译： 使用具有熔融阶段和单独的下游混合阶段的双反向旋转螺杆均化聚丙烯的方法。 聚丙烯在熔融阶段熔化至高于熔点至少5℃，并通过闸阀进入混合段。 施加到混合部分中的聚合物的伸长应力比常规反向旋转挤出机的伸长应力大至少20％，并导致聚合物中Henchy应变在1.5和2.5之间。 这导致聚合物内的显着的应变硬化足以破坏聚丙烯内的凝胶，从而产生无可见白点的聚合物。