Process for the production of linear low-density polyethylene composition
    1.
    发明授权
    Process for the production of linear low-density polyethylene composition 失效
    线性低密度聚乙烯组合物的生产工艺

    公开(公告)号:US07576166B2

    公开(公告)日:2009-08-18

    申请号:US10519326

    申请日:2003-06-19

    IPC分类号: C08L23/04 C08F297/08 C08J5/18

    摘要: A process for producing bimodal linear low-density polyethylene polymer compositions, useful for making films. The polymer compositions have a melt flow rate MFR2 of 0.4 to 1.0 g/10 min and a density of 918 to 925 kn/m3. The process to produce the polymer compositions involves copolymerizing ethylene with an alpha-olefin comonomer in a loop reactor to produce a low molecular weight polymer having a melt flow rate MFR2 of 50 to 500 g/10 min and a density of 945 to 953 kg/m3. The polymerization is continued in a gas phase reactor to produce a high molecular weight polymer, such that the final polymer composition has the desired properties. The final composition contains from 41 to 48% by weight of the low molecular weight polymer and from 59 to 52% by weight of the high molecular weight polymer. The resulting films have an excellent visual appearance and good mechanical properties. The compositions can easily be converted to films. The process can be operated a long time without a shutdown.

    摘要翻译: 一种生产用于制备薄膜的双峰线性低密度聚乙烯聚合物组合物的方法。 聚合物组合物的熔体流动速率MFR 2为0.4至1.0g / 10min,密度为918至925kn / m3。 制备聚合物组合物的方法包括在环管反应器中将乙烯与α-烯烃共聚单体共聚以产生熔体流动速率MFR 2为50至500g / 10min,密度为945至953kg / 10min的低分子量聚合物, m3。 在气相反应器中继续聚合以产生高分子量聚合物,使得最终的聚合物组合物具有所需的性能。 最终组合物含有41至48重量%的低分子量聚合物和59至52重量%的高分子量聚合物。 所得膜具有优异的视觉外观和良好的机械性能。 组合物可以容易地转化成薄膜。 该过程可以长时间运行,无需关机。

    Process for the production of linear low-density polyethlene composition
    4.
    发明申请
    Process for the production of linear low-density polyethlene composition 失效
    生产线性低密度聚乙烯组合物的方法

    公开(公告)号:US20060167192A1

    公开(公告)日:2006-07-27

    申请号:US10519326

    申请日:2003-06-19

    IPC分类号: C08F2/00

    摘要: A process for producing bimodal linear low-density polyethylene polymer compositions, useful for making films. The polymer compositions have a melt flow rate MFR2 of 0.4 to 1.0 g/10 min and a density of 918 to 925 kn/m3. The process to produce the polymer compositions involves copolymerising ethylene with an alpha-olefin comonomer in a loop reactor to produce a low molecular weight polymer having a melt flow rate MFR2 of 50 to 500 g/10 min and a density of 945 to 953 kg/m3. The polymerisation is continued in a gas phase reactor to produce a high molecular weight polymer, such that the final polymer composition has the desired properties. The final composition contains from 41 to 48% by weight of the low molecular weight polymer and from 59 to 52% by weight of the high molecular weight polymer. The resulting films have an excellent visual appearance and good mechanical properties. The compositions can easily be converted to films. The process can be operated a long time without a shutdown.

    摘要翻译: 一种生产用于制备薄膜的双峰线性低密度聚乙烯聚合物组合物的方法。 聚合物组合物的熔体流动速率MFR 2 <2>为0.4至1.0g / 10min,密度为918至925kn / m 3。 制备聚合物组合物的方法包括在环管反应器中将乙烯与α-烯烃共聚单体共聚以产生具有50至500g / 10min的熔体流动速率MFR 2/2的低分子量聚合物,以及 密度为945至953kg / m 3。 在气相反应器中继续聚合以产生高分子量聚合物,使得最终的聚合物组合物具有所需的性质。 最终组合物含有41至48重量%的低分子量聚合物和59至52重量%的高分子量聚合物。 所得膜具有优异的视觉外观和良好的机械性能。 组合物可以容易地转化成薄膜。 该过程可以长时间运行,无需关机。

    Polymer blend
    5.
    发明授权
    Polymer blend 有权
    聚合物共混物

    公开(公告)号:US07812094B2

    公开(公告)日:2010-10-12

    申请号:US12309301

    申请日:2007-07-12

    IPC分类号: C08L23/04

    摘要: The invention relates to a polymer blend suitable for the production of film, said polymer blend comprising at least (1) a multimodal high density polyethylene (HDPE) composition and (2) a low density polyethylene (LDPE) polymer, a linear low density polyethylene (LLDPE) polymer or a mixture of LDPE and LLDPE polymers, said HDPE composition comprising a multimodal HDPE polymer which contains at least a lower molecular weight (LMW) polyethylene component and a higher molecular weight (HMW) polyethylene component.

    摘要翻译: 本发明涉及一种适用于生产膜的聚合物共混物,所述聚合物共混物包含至少(1)多峰高密度聚乙烯(HDPE)组合物和(2)低密度聚乙烯(LDPE)聚合物,线性低密度聚乙烯 (LLDPE)聚合物或LDPE和LLDPE聚合物的混合物,所述HDPE组合物包含含至少较低分子量(LMW)聚乙烯组分和较高分子量(HMW)聚乙烯组分的多峰HDPE聚合物。