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    Heterogeneous in-reactor polymer blends
    8.
    发明授权
    Heterogeneous in-reactor polymer blends 有权
    不均匀的反应器内聚合物共混物

    公开(公告)号：US08106127B2

    公开(公告)日：2012-01-31

    申请号：US12638861

    申请日：2009-12-15

    申请人： Carlos U. De Gracia ,  Kevin R. Squire ,  Peijun Jiang ,  Armenag H. Dekmezian ,  Beverly J. Poole ,  Cesar A. Garcia-Franco

    发明人： Carlos U. De Gracia ,  Kevin R. Squire ,  Peijun Jiang ,  Armenag H. Dekmezian ,  Beverly J. Poole ,  Cesar A. Garcia-Franco

    IPC分类号： C08F8/00 ,  C08L23/04 ,  C08L23/10 ,  C08K5/00

    CPC分类号： C08L23/16 ,  C08L23/12 ,  C08L2314/06 ,  C08L2666/06

    摘要： An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than −0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150° C. and a second melting point of at least 40° C. such that the difference between the first and second melting temperatures is at least 20° C.

    摘要翻译： 反应器内聚合物共混物包含（a）含丙烯的第一聚合物; 和（b）含乙烯的第二聚合物，使得聚合物共混物包含衍生自乙烯的约50重量％至约80重量％的单元和衍生自丙烯的约50重量％至约20重量％的单元。 共混物基本上不含二烯，乙烯 - 乙烯 - 乙烯三单元组形式的第二聚合物中的乙烯含量至少为40％。 第二聚合物含有至少0.1个分支，每10,000个碳原子具有8个或更多个碳原子。 此外，共混物的应变硬化指数为至少1.8，对数（动态粘度）对log（频率）的曲线图中的剪切变稀斜率小于-0.2，并且当进行差示扫描量热法时显示出至少两个峰 （第一熔体），其对应于至少150℃的第一熔点和至少40℃的第二熔点，使得第一和第二熔融温度之间的差异为至少20℃。

    Thermoplastic Elastomer Polyolefin In-Reactor Blends And Molded Articles Therefrom
    10.
    发明申请
    Thermoplastic Elastomer Polyolefin In-Reactor Blends And Molded Articles Therefrom 有权
    热塑性弹性体聚烯烃反应器共混物和成型制品

    公开(公告)号：US20100152383A1

    公开(公告)日：2010-06-17

    申请号：US12638916

    申请日：2009-12-15

    申请人： Peijun Jiang ,  Armenag H. Dekmezian ,  Kevin R. Squire ,  Cesar A. Garcia-Franco

    发明人： Peijun Jiang ,  Armenag H. Dekmezian ,  Kevin R. Squire ,  Cesar A. Garcia-Franco

    IPC分类号： C08L23/04

    CPC分类号： C08L23/06 ,  C08L23/08 ,  C08L2205/02 ,  C08L2314/06 ,  C08L2666/06

    摘要： This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend has a Tm of at least 90° C. (DSC second melt), a density of less than 0.92 g/cm3, and the densities of the first and second polymers differ by at least 1%. Specifically this invention relates to an in-reactor polymer blend comprising: (a) a first ethylene polymer comprising 90 to 100 wt % ethylene and from 0 to less than 10 wt % comonomer, said first ethylene polymer component having density of greater than 0.920 g/cm3, an Mw of 20,000 g/mol or more; and (b) a second ethylene polymer comprising from 70 to 90 wt % ethylene and 30 to 10 wt % comonomer, said second ethylene polymer having a density of 0.910 g/cm3 or less, wherein the polymer blend has: (a) a Tm of at least 100° C. over a density ranging from 0.84 to 0.92 g/cm3; (b) a elongation at break of 300% or more; (c) a strain hardening index M300/M100 of at least 1.2; (d) a ratio of complex viscosity at 0.01 rad/s to the viscosity at 100 rad/s is of at least 30; and (e) a shear thinning slope of the plot of log(dynamic viscosity) versus log(frequency) less than −0.2.

    摘要翻译： 本发明涉及一种反应器内聚合物共混物，其包含：（a）密度大于0.90g / cm 3，Mw大于20,000g / mol的第一含乙烯聚合物和（b）第二含乙烯的聚合物 聚合物的密度小于0.90g / cm 3，其中聚合物共混物具有至少90℃的Tm（DSC第二熔体），密度小于0.92g / cm 3，第一和第二密度 聚合物的差异至少为1％。 具体而言，本发明涉及一种反应器内聚合物共混物，其包含：（a）包含90至100重量％乙烯和0至小于10重量％共聚单体的第一乙烯聚合物，所述第一乙烯聚合物组分的密度大于0.920g / cm3，Mw为20,000g / mol以上; 和（b）包含70-90wt％乙烯和30-10wt％共聚单体的第二乙烯聚合物，所述第二乙烯聚合物的密度为0.910g / cm 3或更低，其中所述聚合物共混物具有：（a）Tm 至少100℃，密度范围为0.84至0.92g / cm 3; （b）断裂伸长率在300％以上; （c）至少为1.2的应变硬化指数M300 / M100; （d）0.01rad / s下的复数粘度与100rad / s下的粘度之比至少为30; 和（e）对数（动态粘度）对log（频率）小于-0.2的曲线的剪切变薄斜率。