Polymer compositions and nonwoven compositions prepared therefrom
    1.
    发明授权
    Polymer compositions and nonwoven compositions prepared therefrom 有权
    聚合物组合物和由其制备的非织造组合物

    公开(公告)号:US08710148B2

    公开(公告)日:2014-04-29

    申请号:US13310146

    申请日:2011-12-02

    IPC分类号: C08F8/00 C08L23/06

    摘要: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 α-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.

    摘要翻译: 提供了丙烯类聚合物组合物,其包括丙烯和约5重量%至约20重量%的一种或多种C 2和/或C 4 -C 12α-烯烃。 聚合物组合物的三单元组立构规整度大于约90%,熔融热小于约75J / g,熔体流动速率(MFR)大于或等于约25g / 10min(230℃, 2.16公斤)。 此外,聚合物组合物是包含第一聚合物和第二聚合物的反应器共混物的反应器级组合物,优选地,使用相同的催化剂体系制备第一和第二聚合物。 还提供了包含这种聚合物组合物的熔喷非织造织物,例如熔喷或纺粘织物,以及用于形成无纺织物的方法。

    Polymer Compositions and Nonwoven Compositions Prepared Therefrom
    2.
    发明申请
    Polymer Compositions and Nonwoven Compositions Prepared Therefrom 有权
    聚合物组合物和无纺布组合物

    公开(公告)号:US20130143461A1

    公开(公告)日:2013-06-06

    申请号:US13310146

    申请日:2011-12-02

    摘要: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 α-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.

    摘要翻译: 提供了基于丙烯的聚合物组合物,其包含丙烯和约5重量%至约20重量%的一种或多种C 2和/或C 4 -C 12α-烯烃。 聚合物组合物的三单元组立构规整度大于约90%,熔融热小于约75J / g,熔体流动速率(MFR)大于或等于约25g / 10min(230℃, 2.16公斤)。 此外,聚合物组合物是包含第一聚合物和第二聚合物的反应器共混物的反应器级组合物,优选地,使用相同的催化剂体系制备第一和第二聚合物。 还提供了包含这种聚合物组合物的熔喷非织造织物,例如熔喷或纺粘织物,以及用于形成无纺织物的方法。

    Elastomeric polymer blends and processes for their production
    3.
    发明授权
    Elastomeric polymer blends and processes for their production 有权
    弹性聚合物共混物及其生产方法

    公开(公告)号:US08247495B2

    公开(公告)日:2012-08-21

    申请号:US13015364

    申请日:2011-01-27

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

    摘要: Elastomeric polymer blends and processes for their production are described. Specifically, the polymer blends comprise a first polymer and a second polymer, where the first polymer comprises from about 70 wt % to about 90 wt % units derived from propylene and from about 10 wt % to about 30 wt % units derived from ethylene and/or a C4-C10 alpha-olefin, and the second polymer comprises from about 88 wt % to about 98 wt % units derived from propylene and from about 2 wt % to about 12 wt % units derived from ethylene and/or a C4-C10 alpha-olefin. The elastomeric polymer blends are further characterized by having two or more of the following properties: an overall propylene content of between about 75 wt % and about 90 wt %, a melting point between about 110° C. and about 145° C., a Vicat softening point greater than about 45° C., a tensile stress at 300% strain of less than about 500 psi (3447 kPa), as determined by a stress strain test according to ASTM D412, or an average maximum force for pellet separation of less than about 10 N in an accelerated storage stability test. The polymer blends are produced in a dual reactor process, in which the first polymer and the second polymer are prepared using differing catalyst systems.

    摘要翻译: 描述了弹性聚合物共混物及其生产方法。 具体地,聚合物共混物包含第一聚合物和第二聚合物,其中第一聚合物包含约70重量%至约90重量%的衍生自丙烯的单元和约10重量%至约30重量%的衍生自乙烯和/ 或C 4 -C 10α-烯烃,并且第二聚合物包含衍生自丙烯的约88重量%至约98重量%的单元和衍生自乙烯和/或C 4 -C 10的约2重量%至约12重量%的单元 α-烯烃。 弹性体聚合物共混物的进一步特征在于具有两种或更多种以下性能:总丙烯含量为约75重量%至约90重量%,熔点为约110℃至约145℃, 维卡软化点大于约45℃,通过根据ASTM D412的应力应变测试确定的小于约500psi(3447kPa)的300%应变下的拉伸应力或丸粒分离的平均最大力 在加速储存稳定性试验中小于约10N。 聚合物共混物在双重反应器方法中制备,其中使用不同的催化剂体系制备第一聚合物和第二聚合物。

    Elastomeric Polymer Blends and Processes for Their Production
    4.
    发明申请
    Elastomeric Polymer Blends and Processes for Their Production 有权
    弹性体聚合物共混物及其制备方法

    公开(公告)号:US20110207888A1

    公开(公告)日:2011-08-25

    申请号:US13015364

    申请日:2011-01-27

    IPC分类号: C08L23/14 C08J5/00

    摘要: Elastomeric polymer blends and processes for their production are described. Specifically, the polymer blends comprise a first polymer and a second polymer, where the first polymer comprises from about 70 wt % to about 90 wt % units derived from propylene and from about 10 wt % to about 30 wt % units derived from ethylene and/or a C4-C10 alpha-olefin, and the second polymer comprises from about 88 wt % to about 98 wt % units derived from propylene and from about 2 wt % to about 12 wt % units derived from ethylene and/or a C4-C10 alpha-olefin. The elastomeric polymer blends are further characterized by having two or more of the following properties: an overall propylene content of between about 75 wt % and about 90 wt %, a melting point between about 110° C. and about 145° C., a Vicat softening point greater than about 45° C., a tensile stress at 300% strain of less than about 500 psi (3447 kPa), as determined by a stress strain test according to ASTM D412, or an average maximum force for pellet separation of less than about 10 N in an accelerated storage stability test. The polymer blends are produced in a dual reactor process, in which the first polymer and the second polymer are prepared using differing catalyst systems.

    摘要翻译: 描述了弹性聚合物共混物及其生产方法。 具体地,聚合物共混物包含第一聚合物和第二聚合物,其中第一聚合物包含约70重量%至约90重量%的衍生自丙烯的单元和约10重量%至约30重量%的衍生自乙烯和/ 或C 4 -C 10α-烯烃,并且第二聚合物包含衍生自丙烯的约88重量%至约98重量%的单元和衍生自乙烯和/或C 4 -C 10的约2重量%至约12重量%的单元 α-烯烃。 弹性体聚合物共混物的进一步特征在于具有两种或更多种以下性能:总丙烯含量为约75重量%至约90重量%,熔点为约110℃至约145℃, 维卡软化点大于约45℃,通过根据ASTM D412的应力应变测试确定的小于约500psi(3447kPa)的300%应变下的拉伸应力或丸粒分离的平均最大力 在加速储存稳定性试验中小于约10N。 聚合物共混物在双重反应器方法中制备,其中使用不同的催化剂体系制备第一聚合物和第二聚合物。

    Enhanced ESCR of HDPE resins
    7.
    发明申请
    Enhanced ESCR of HDPE resins 有权
    增强HDPE树脂的ESCR

    公开(公告)号:US20070282071A1

    公开(公告)日:2007-12-06

    申请号:US11445090

    申请日:2006-06-01

    IPC分类号: C08L23/04 C08L23/00

    摘要: Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

    摘要翻译: 公开了聚乙烯(“PE”)组合物,包含PE组合物的制品和制备混合PE组合物的方法,其中所述共混组合物包含约80至约95重量%的第一PE和约5至约20重量%的 第二个PE。 第一PE具有大于或等于约0.945g / cc的密度和大于约5的MWD。第二PE具有小于约0.945g / cc的密度,小于约0.70g / 10分钟的熔体指数,以及 小于或等于第一PE的熔融指数,MWD为约1至约5,重均分子量小于约400,000,CDBI大于约50%。 PE组合物具有大于第一PE的ESCR的ESCR。

    Enhanced ESCR of HDPE resins
    8.
    发明授权
    Enhanced ESCR of HDPE resins 有权
    增强HDPE树脂的ESCR

    公开(公告)号:US07943700B2

    公开(公告)日:2011-05-17

    申请号:US11445090

    申请日:2006-06-01

    摘要: Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

    摘要翻译: 公开了聚乙烯(“PE”)组合物,包含PE组合物的制品和制备混合PE组合物的方法,其中所述共混组合物包含约80至约95重量%的第一PE和约5至约20重量%的 第二个PE。 第一PE具有大于或等于约0.945g / cc的密度和大于约5的MWD。第二PE具有小于约0.945g / cc的密度,小于约0.70g / 10分钟的熔体指数,以及 小于或等于第一PE的熔融指数,MWD为约1至约5,重均分子量小于约400,000,CDBI大于约50%。 PE组合物具有大于第一PE的ESCR的ESCR。