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    POLYETHYLENE FILMS
    4.
    发明申请
    POLYETHYLENE FILMS 审中-公开
    聚乙烯薄膜

    公开(公告)号：WO2012109246A1

    公开(公告)日：2012-08-16

    申请号：PCT/US2012/024149

    申请日：2012-02-07

    Applicant: EQUISTAR CHEMICALS, LP ,  MAVRIDIS, Harilaos

    Inventor： MAVRIDIS, Harilaos

    IPC: C08J5/18 ,  C08L23/02

    CPC classification number: C08L23/0815 ,  C08J5/18 ,  C08J2323/08 ,  C08J2423/06 ,  C08L23/06 ,  C08L2314/06

    Abstract: The present invention relates to a film made of a polymer blend of LDPE and LLDPE that is produced with a metallocene catalyst. The present invention includes a film made of 0.15 to 0.8 wt% of an LDPE having an Ml of 0.1 to 0.6 dg/min and 99.2 to 99.85 wt% of an LLDPE produced with a single- site catalyst comprising a metallocene and having a haze (HZ lldpe ), dart impact (Dl lldpe ), MD-Tear (MDT lldpe ), and a slice long chain branching index of at least 0.90 for any portion of the composition having a molecular weight of 100,000 or above. The film has a haze, HZ blend , where HZ blend = a*HZ lldpe , where a is 0.20 to 0.70; a dart impact, Dl blend, where Dl blend = b*Dl lldpe , where b is 0.9 to 1.3; and an MD-Tear, MDT blend , where MDT blend = c*MDT lldpe , where c is 0.8 to 1.1.

    Abstract translation: 本发明涉及由茂金属催化剂制备的LDPE和LLDPE的聚合物共混物制成的薄膜。 本发明包括由0.15至0.8重量％的具有0.1至0.6dg / min的MI为0.1至0.6dg / min的LDPE和99.2至99.85重量％的由含有茂金属并具有雾度的单中心催化剂制备的LLDPE的膜 HZlldpe），飞镖冲击（Dllldpe），MD-Tear（MDTlldpe）以及分子量为100,000或更高的组合物的任何部分的至少0.90的切片长链支化指数。 这部电影有一个阴霾，HZblend，其中HZblend = a * HZlldpe，其中a为0.20至0.70; 飞镖撞击，Dlblend，其中Dlblend = b * Dllldpe，其中b为0.9至1.3; 和MD-Tear，MDTblend，其中MDTblend = c * MDTlldpe，其中c为0.8至1.1。

    PROCESS FOR PREPARING HIGH MELT STRENGTH POLYPROPYLENE
    6.
    发明申请
    PROCESS FOR PREPARING HIGH MELT STRENGTH POLYPROPYLENE 审中-公开
    制备高强度聚丙烯的方法

    公开(公告)号：WO2007100436A1

    公开(公告)日：2007-09-07

    申请号：PCT/US2007/002810

    申请日：2007-02-02

    Applicant: NOVOLEN TECHNOLOGY HOLDING C.V. ,  MAVRIDIS, Harilaos ,  SHANKERNARAYNAN, Manivakkam, J.

    Inventor： MAVRIDIS, Harilaos ,  SHANKERNARAYNAN, Manivakkam, J.

    IPC: C08F10/06

    CPC classification number: C08F10/06 ,  C08F110/06 ,  C08L23/12 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2308/00 ,  C08F2/001 ,  C08L2666/06 ,  C08F2500/11 ,  C08F2500/05

    Abstract: A method for producing a polypropylene-containing composition which includes (a) polymerizing a first quantity of propylene in a first reaction zone in the presence of a first polymerization catalyst to provide a first quantity of polypropylene having a weight- average molecular weight M w,A ; (b) polymerizing a second quantity of propylene optionally mixed with a minor amount of one or more olefins other than propylene in a second reaction zone in the presence of a second polymerization catalyst to provide a second quantity of polypropylene comprising a polypropylene homopolymer or random copolymer and having a weight-average molecular weight M w,B ; and (c) combining the first quantity of polypropylene with the second quantity of polypropylene to form a bimodal polypropylene; wherein the percent by weight of the first quantity of polypropylene in the bimodal polypropylene composition is equal to or greater than 65 percent, and the ratio M w,B /M w,A is at least about 2.

    Abstract translation: 一种制备含聚丙烯的组合物的方法，其包括：（a）在第一聚合催化剂存在下，在第一反应区中聚合第一量的丙烯，以提供第一量的重均分子量M W，A ; （b）在第二聚合催化剂的存在下，在第二反应区中聚合任选与少量丙烯以外的一种或多种烯烃混合的第二量丙烯，以提供第二量的包含聚丙烯均聚物或无规共聚物的聚丙烯 并且具有重均分子量M w，B; 和（c）将第一量的聚丙烯与第二量的聚丙烯组合以形成双峰聚丙烯; 其中所述双峰聚丙烯组合物中的所述第一量的聚丙烯的重量百分比等于或大于65％，并且所述比例M W，B / M W，A / >至少约2。

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