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    Rotomolding composition
    1.
    发明授权
    Rotomolding composition 有权
    滚塑组合物

    公开(公告)号：US09267010B2

    公开(公告)日：2016-02-23

    申请号：US14366829

    申请日：2012-12-20

    申请人： Luis G. Zalamea ,  Roberto Rigobello ,  Thomas T. Allgeuer ,  Gerd Lohse

    发明人： Luis G. Zalamea ,  Roberto Rigobello ,  Thomas T. Allgeuer ,  Gerd Lohse

    IPC分类号： C08K3/22

    CPC分类号： C08K3/22 ,  C08K2003/2265

    摘要： The instant invention provides a rotomolding composition. The a rotomolding composition comprises at least 95 percent by weight of a thermoplastic polymer; and from 0.1 to 3 percent by weight of metal oxide lamellae; wherein the rotomolding composition is characterized by at least one of the following properties: (a) having a retention at elongation at break of at least 85 percent after 4000 hours of accelerated aging; or (b) having a ductility improvement of at least 50 percent relative to a similar composition free of said metal oxide lamellae.

    摘要翻译： 本发明提供了一种滚塑组合物。 该滚塑组合物包含至少95重量％的热塑性聚合物; 和0.1至3重量％的金属氧化物薄片; 其中所述滚塑组合物的特征在于以下性质中的至少一个：（a）在加速老化4000小时后具有至少85％的断裂伸长率的保留; 或（b）相对于不含所述金属氧化物薄片的类似组合物，其延性提高至少为50％。

    Method for producing ethylene homopolymerizates and ethylene copolymerizates of a lower mass density
    2.
    发明授权
    Method for producing ethylene homopolymerizates and ethylene copolymerizates of a lower mass density 有权
    生产乙烯均聚物的方法和质量密度较低的乙烯共聚物

    公开(公告)号：US06569962B1

    公开(公告)日：2003-05-27

    申请号：US09719602

    申请日：2001-02-13

    申请人： Werner Zschoch ,  Juan M. Mezquita ,  Harald Beer ,  Gerd Lohse ,  Otto Berbee

    发明人： Werner Zschoch ,  Juan M. Mezquita ,  Harald Beer ,  Gerd Lohse ,  Otto Berbee

    IPC分类号： C08F238

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F4/28 ,  C08F2/001 ,  C08F2/38 ,  C08F4/34 ,  C08F2500/12 ,  C08F2500/17

    摘要： The invention pertains to a method for producing ethylene homopolymerizates and ethylene copolymerizates exhibiting a lower mass density of up to 0.930 g/cm3 and a melt index ranging from 0.15 to 25 g/10 min (2.16 kg; 463 K). Said polymerizates exhibit an improved processing stability and improved availability in the installation at pressures greater than 1000 bar and at temperatures of up to 603 K. The polymerizates are produced in tubular reactors in the presence of radical-forming initiators, oxygen thereunder and chain transfer agents, of which at least one comprises an aldehydic structure. According to the inventive method, chemokinetic characteristics of the reactive feed materials (thermal half-life periods, concentrations, dosing quantities) are coupled with fluidically relevant characteristics of the tubular reactor (flow rate) while taking the target product quality (melt index, flow figure) into consideration. This coupling is carried out such that the interfering secondary reactions, especially polar-inductive substitution effects, which can lead to the formation and the enrichment of organic hydroperoxides are reduced to a minimum and, as a result, extraordinarily stable processing conditions can be obtained.

    摘要翻译： 本发明涉及生产乙烯均聚物和乙烯共聚物的方法，其表现出最高0.930g / cm 3的较低质量密度和0.15-25g / 10min（2.16kg; 463K）的熔体指数。 所述聚合物在高于1000巴的压力和高达603K的温度下表现出改进的加工稳定性和改进的可用性。聚合物在管状反应器中在自由基形成引发剂，其下的链和链转移剂 ，其中至少一个包含醛结构。 根据本发明的方法，反应性进料的趋化因子特征（热半衰期，浓度，给药量）与管状反应器的流体相关特征（流速）相结合，同时获得目标产物质量（熔体指数，流量 图）考虑。 进行这种耦合使得能够将导致有机氢过氧化物的形成和富集的干扰性二次反应，特别是极性诱发取代效应降低到最小，结果可以获得非常稳定的加工条件。