Thermoplastic polyolefin blends
    34.
    发明授权
    Thermoplastic polyolefin blends 有权
    热塑性聚烯烃共混物

    公开(公告)号:US08410217B2

    公开(公告)日:2013-04-02

    申请号:US13027896

    申请日:2011-02-15

    IPC分类号: C08F8/00 C08L23/04

    摘要: This invention relates to a blend composition comprising: 1) a linear ethylene containing polymer, such as a LLDPE, a HDPE or the like; and at least 1 weight percent of 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%.

    摘要翻译: 本发明涉及一种共混组合物,其包含:1)含线性乙烯的聚合物,例如LLDPE,HDPE等; 和至少1重量%的反应器内聚合物共混物,其包含:(a)密度大于0.90g / cm 3和Mw大于20,000g / mol的第一含乙烯聚合物; 和(b)密度小于0.90g / cm 3的第二含乙烯聚合物,其中聚合物共混物具有至少90℃的Tm(DSC第二熔体),小于0.92g / cm 3的密度, 并且第一和第二聚合物的密度相差至少1%。

    Branched Vinyl Terminated Polymers And Methods For Production Thereof
    36.
    发明申请
    Branched Vinyl Terminated Polymers And Methods For Production Thereof 有权
    支链乙烯基终端聚合物及其生产方法

    公开(公告)号:US20120245299A1

    公开(公告)日:2012-09-27

    申请号:US13411929

    申请日:2012-03-05

    IPC分类号: C08F255/02 C08F8/00 C08F4/76

    摘要: This invention relates to a process for polymerization, comprising (i) contacting, at a temperature greater than 35° C., one or more monomers comprising ethylene and/or propylene, with a catalyst system comprising a metallocene catalyst compound and an activator, (ii) converting at least 50 mol % of the monomer to polyolefin; and (iii) obtaining a branched polyolefin having greater than 50% allyl chain ends, relative to total unsaturated chain ends. The invention also relates to the branched polyolefins and functionalized branched polyolefins.

    摘要翻译: 本发明涉及一种聚合方法,其包括(i)在大于35℃的温度下使一种或多种包含乙烯和/或丙烯的单体与包含茂金属催化剂化合物和活化剂的催化剂体系接触( ii)将至少50mol%的单体转化成聚烯烃; 和(iii)获得相对于总不饱和链末端具有大于50%烯丙基链端的支链聚烯烃。 本发明还涉及支链聚烯烃和官能化支化聚烯烃。

    High shrinkage propylene-based films
    38.
    发明授权
    High shrinkage propylene-based films 有权
    高收缩丙烯基薄膜

    公开(公告)号:US08202941B2

    公开(公告)日:2012-06-19

    申请号:US12992204

    申请日:2009-05-27

    摘要: A heat-shrinkable film. The film comprising at least one layer having at least one propylene-based polymer comprising 60 wt % to 98 wt % propylene derived units and 2 wt % to 40 wt % one or more other alpha olefins, the propylene-based polymer having: a triad tacticity of 70% or more, a heat of fusion of less than 80 J/g, a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000. The layer also comprises at least one thermoplastic resin and at least one hydrocarbon resin.

    摘要翻译: 热收缩膜。 所述薄膜包含至少一层具有至少一种丙烯类聚合物的丙烯类聚合物,所述丙烯类聚合物包含60重量%至98重量%的丙烯衍生单元和2重量%至40重量%的一种或多种其它α-烯烃,所述丙烯类聚合物具有:三单元组 立构规整度为70%以上,熔融热小于80J / g,通过GPC测定的重均分子量(Mw)为70,000〜250,000。 该层还包含至少一种热塑性树脂和至少一种烃树脂。

    Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom
    39.
    发明授权
    Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom 有权
    热塑性弹性体聚烯烃反应器内共混物及其模塑制品

    公开(公告)号:US08101685B2

    公开(公告)日:2012-01-24

    申请号:US12638916

    申请日:2009-12-15

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

    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。