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    Process for Preparing Crystalline Ethylene (Co) Polymers
    274.
    发明申请
    Process for Preparing Crystalline Ethylene (Co) Polymers 有权
    制备结晶乙烯（Co）聚合物的方法

    公开(公告)号：US20090054608A1

    公开(公告)日：2009-02-26

    申请号：US11887527

    申请日：2006-03-15

    Applicant: Giampiero Morini ,  Isabella Camurati ,  Tiziano Dall'Occo ,  Dario. Liguori ,  Gianni Vitale

    Inventor： Giampiero Morini ,  Isabella Camurati ,  Tiziano Dall'Occo ,  Dario. Liguori ,  Gianni Vitale

    IPC: C08F4/76

    CPC classification number: C08F10/00 ,  C08F210/16 ,  C08F4/6543 ,  C08F4/6565 ,  C08F210/08 ,  C08F2500/12

    Abstract: A process for preparing crystalline ethylene (co)polymers comprising (co)polymerizing ethylene in the presence of carried out in the presence catalyst system comprising (a) a solid catalyst component comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio of at least 0.5, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight, and showing a specific pattern of the SS-NMR; and (b) an aluminum alkyl compound as a cocatalyst. The process allows to obtain in good yields ethylene polymers with narrow MWD.

    Abstract translation: 在包含（a）包含Ti，Mg，卤素，ORI基团的固体催化剂组分的情况下，在存在催化剂体系的情况下，制备结晶乙烯（共）聚合物的方法，包括（共）聚合乙烯，其中RI是C1 -C12烃基，任选地含有杂原子，ORI / Ti摩尔比至少为0.5，相对于所述固体催化剂组分的总重量，钛的量高于4重量％，并且显示了 SS-NMR; 和（b）作为助催化剂的烷基铝化合物。 该方法允许以良好的产率获得具有窄MWD的乙烯聚合物。

    Process for the Gas-Phase Polymerization Olefins
    276.
    发明申请
    Process for the Gas-Phase Polymerization Olefins 有权
    气相聚合烯烃方法

    公开(公告)号：US20080312388A1

    公开(公告)日：2008-12-18

    申请号：US11665210

    申请日：2005-09-19

    Applicant: Gabriele Mei ,  Massimo Covezzi ,  Stefano Bertolini

    Inventor： Gabriele Mei ,  Massimo Covezzi ,  Stefano Bertolini

    IPC: C08F2/01 ,  C08F2/34

    CPC classification number: C08F10/00 ,  C08F110/06 ,  C08F210/06 ,  Y10S526/904 ,  Y10S526/919 ,  C08F2/01 ,  C08F4/651 ,  C08F4/6492 ,  C08F2/001 ,  C08F2/34 ,  C08F2500/24 ,  C08F210/16

    Abstract: Process for the gas-phase polymerization of one or more alpha-olefins in the presence of a catalyst system, the process comprising: contacting in a continuous way one or more of said alpha-olefins with said catalyst system in a prepolymerization reactor, wherein the reaction is carried out in a liquid medium at a temperature ranging from 23° to 50° C.; feeding in continuous the prepolymer obtained in step a) into a gas-phase reactor having interconnected polymerization zones, where the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity, leave said downcomer and are reintroduced into said riser; wherein the prepolymer obtained from step a) is continuously fed at a section of said riser characterized by an upwardly gas velocity higher than 3.0 m/s.

    Abstract translation: 一种或多种α-烯烃在催化剂体系存在下进行气相聚合的方法，该方法包括：在预聚合反应器中以连续的方式使一种或多种所述α-烯烃与所述催化剂体系接触，其中， 反应在液体介质中在23℃至50℃的温度下进行; 在步骤a）中获得的预聚物连续进料到具有互连聚合区的气相反应器中，其中生长的聚合物颗粒在快速流化或运输条件下通过第一聚合区（提升管）向上流动，离开所述提升管并进入第二个 聚合区（降液管）通过它们在重力作用下向下流动，离开所述降液管并重新引入所述提升管中; 其中从步骤a）获得的预聚物在所述提升管的部分连续进料，其特征在于高于3.0m / s的向上气体速度。

    Polyolefinic Compositions Having Good Whitening Resistance
    277.
    发明申请
    Polyolefinic Compositions Having Good Whitening Resistance 有权
    具有良好美白抗性的聚烯烃组合物

    公开(公告)号：US20080167428A1

    公开(公告)日：2008-07-10

    申请号：US11793843

    申请日：2005-11-28

    Applicant: Paola Massari ,  Marco Ciarafoni ,  Jean News

    Inventor： Paola Massari ,  Marco Ciarafoni ,  Jean News

    IPC: C08L23/14 ,  C08L23/10

    CPC classification number: C08L23/10 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/12 ,  C08L23/142 ,  C08L23/16 ,  C08L2205/03 ,  C08L2666/02 ,  C08F210/06 ,  C08F2/001 ,  C08F4/6492 ,  C08F4/651

    Abstract: A polypropylene composition comprising (percent by weight) (a) 50-77 % of a crystalline propylene polymer having an amount of isotactic pentads (mmmm), measured by 13C-MNR on the fraction insoluble in xylene at 25° C., higher than 97.5 molar % and a polydispersity index ranging from 4 to 10; (b) 13-28 % of an elastomeric copolymer of ethylene and propylene, the copolymer having an amount of recurring units deriving from ethylene ranging from 30 to 70 % and being partially soluble in xylene at ambient temperature, the polymer fraction soluble in xylene at ambient temperature having an intrinsic viscosity value ranging from 2 to 4 dl/g; and (c) 10-22 % of polyethylene having an intrinsic viscosity value ranging from 1 to 3 dl/g, in said composition component (b) plus component (c) being in amounts of at least 25 wt %. The polymer composition exhibits good impact resistant, whitening resistance and relatively low stiffness.

    Abstract translation: 包含（重量百分比）（a）50-77％的具有全同立构五单元组的结晶丙烯聚合物（mmmm），通过不溶于二甲苯的级分测得的13 C-MNR 在25℃，高于97.5摩尔％，多分散指数为4至10; （b）13-28％的乙烯和丙烯的弹性体共聚物，该共聚物具有一定量的衍生自乙烯的重复单元，范围为30至70％，并且在环境温度下部分溶于二甲苯，聚合物馏分可溶于二甲苯 环境温度的特性粘度值范围为2至4dl / g; 和（c）所述组合物组分（b）加组分（c）的特性粘度值为1至3dl / g的聚乙烯的10-22％的量为至少25重量％。 聚合物组合物表现出良好的抗冲击性，耐白化性和相对低的刚度。

    Heat-Sealable Polyolefin Films
    279.
    发明申请
    Heat-Sealable Polyolefin Films 失效
    热封聚烯烃薄膜

    公开(公告)号：US20080114113A1

    公开(公告)日：2008-05-15

    申请号：US11793660

    申请日：2005-11-08

    Applicant: Nicolas Kokel ,  Stephanie Lahaye

    Inventor： Nicolas Kokel ,  Stephanie Lahaye

    IPC: C08K3/20

    CPC classification number: B32B27/32 ,  B32B27/08 ,  B32B27/20 ,  B32B2250/242 ,  B32B2264/104 ,  B32B2307/31 ,  B32B2307/518 ,  B32B2307/5825 ,  B32B2307/704 ,  B32B2307/736 ,  B32B2307/746 ,  B32B2439/46 ,  B32B2439/70 ,  C08L23/10 ,  C08L23/16 ,  C08L2205/02 ,  C08L2666/06

    Abstract: Heat-sealable polyolefin film made of or comprising at least one layer of a polyolefin composition comprising (percent by weight): A) 20% to 80% of a heterophasic polyolefin composition comprising: AI) 3% to 30% by weight of a crystalline olefin polymer fraction; AII) 70% to 97% by weight of an elastomeric fraction comprising at least an elastomeric copolymer of propylene or ethylene with 12 to 88% by weight of at least one α-olefin of formula H2C═CHR, where R is H or a C2-C10 linear or branched alkyl, optionally containing 0.5 to 5% by weight of a diene, and having solubility in xylene at room temperature greater than 50% by weight; B) 20% to 80% of at least one filler.

    Abstract translation: 由（或重量百分比）的聚烯烃组合物制成或包括至少一层的可热封聚烯烃膜：A）20％至80％的多相聚烯烃组合物，其包含：3％ 至30重量％的结晶烯烃聚合物部分; 70％至97％重量的弹性体级分，其包含至少丙烯或乙烯的弹性体共聚物和12至88％重量的至少一种式H的α-烯烃 2 C-CHR，其中R是H或C2-C10直链或支链烷基，任选地含有0.5至5重量％的二烯，并且在室温下在二甲苯中的溶解度大于50重量％ ; B）20％至80％的至少一种填料。

    Polyolefin compositions having high fluidity
    280.
    发明申请
    Polyolefin compositions having high fluidity 有权
    具有高流动性的聚烯烃组合物

    公开(公告)号：US20080090969A1

    公开(公告)日：2008-04-17

    申请号：US11904176

    申请日：2007-09-26

    Applicant: Anteo Pelliconi ,  Antonella Angelini

    Inventor： Anteo Pelliconi ,  Antonella Angelini

    IPC: C08L23/12

    CPC classification number: C08L23/16 ,  C08L23/142 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2666/06

    Abstract: A polyolefin composition suitable for preparing films and sheets, comprising: (A) from 15 to 40% by weight of a crystalline copolymer of propylene with at least one alpha-olefin of formula H2C═CHR1, where R1 is H or a C2-8 linear or branched alkyl, containing at least 90% by weight of propylene, having solubility in xylene at room temperature lower than 15% by weight; (B) from 60 to 85% by weight of an elastomeric fraction comprising: (1) a copolymer of propylene with ethylene, optionally containing 0.5 to 5% by weight of a diene, containing from 20 to 35% by weight ethylene, and having solubility in xylene at room temperature greater than 45% by weight, the intrinsic viscosity of the xylene soluble fraction ranging from 1.0 to 3.9 dl/g; and (2) a copolymer of ethylene with at least one alpha-olefin of formula H2C═CHR2, where R2 is a C2-8 linear or branched alkyl, optionally containing 0.5 to 5% by weight of a diene, containing 15% to 40% by weight alpha-olefin, and having solubility in xylene at room temperature greater than 35% by weight, the intrinsic viscosity of the xylene soluble fraction ranging, from 1.0 to 3.0 dl/g; the (1)/(2) weight ratio ranging from 1:5 to 5:1. The polyolefin composition of the invention, preferably prepared by sequential polymerization in at least three stages, has a flexural modulus lower than 130 Mpa, shore D hardness lower than 40, and MFR ≧1.5 g/10 min.

    Abstract translation: 一种适于制备薄膜和片材的聚烯烃组合物，其包含：（A）15至40重量％的丙烯与至少一种式H 2 C-CHR的α-烯烃的结晶共聚物， 其中R 1是H或含有至少90重量％的丙烯的C 2〜2-8直链或支链烷基，其具有溶解度 在二甲苯中室温低于15重量％; （B）60至85重量％的弹性体级分，其包含：（1）丙烯与乙烯的共聚物，任选含有0.5至5重量％的二烯，其含有20至35重量％的乙烯，并且具有 室温下在二甲苯中的溶解度大于45重量％，二甲苯可溶组分的特性粘度为1.0至3.9dl / g; 和（2）乙烯与至少一种式H 2 C-CHR 2的α-烯烃的共聚物，其中R 2是 C 2-8直链或支链烷基，任选地含有0.5至5重量％的二烯，含有15重量％至40重量％的α-烯烃，并且在室温下在二甲苯中的溶解度大于 35重量％，二甲苯可溶成分的特性粘度为1.0〜3.0dl / g; （1）/（2）重量比为1:5至5:1。 本发明的聚烯烃组合物优选通过至少三个阶段的顺序聚合制备，其挠曲模量低于130Mpa，肖氏D硬度低于40，MFR> = 1.5g / 10min。

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