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    POLYETHYLENE RESIN AND CAPS OR CLOSURES MADE THEREFROM
    3.
    发明申请
    POLYETHYLENE RESIN AND CAPS OR CLOSURES MADE THEREFROM 审中-公开

    公开(公告)号：WO2019096745A1

    公开(公告)日：2019-05-23

    申请号：PCT/EP2018/080966

    申请日：2018-11-12

    Applicant: TOTAL RESEARCH & TECHNOLOGY FELUY

    Inventor： RIBOUR, David ,  STANDAERT, Alain ,  SIGWALD, Armelle ,  VANTOMME, Aurélien

    IPC: C08L23/06 ,  C08L23/08

    CPC classification number: C08L23/0815 ,  C08F2/001 ,  C08L23/06 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2308/00 ,  C08L2314/02 ,  C08F210/16 ,  C08F4/6555 ,  C08F210/14 ,  C08F2500/05 ,  C08F2500/07 ,  C08F2500/12

    Abstract: The present invention relates to a polyethylene resin suitable for preparing moulded articles, such as caps and closures. The invention provides in particular a polyethylene resin comprising at least two polyethylene fractions A and B, wherein said polyethylene resin has a melt index (MI2), of at least 3.0 g/10 min to at most 5.5 g/10 min as measured according to ISO 1133, condition D, at 190 °C and under a load of 2.16 kg, and a density of at least 0.955 g/cm³ to at most 0.965 g/cm³ as measured according to ISO 1183 at 23 °C, and a molecular weight distribution Mw/Mn which is at most 7.0, as determined by gel permeation chromatography, with Mw being the weight-average molecular weight and Mn being the number-average molecular weight; and wherein said polyethylene fraction A has a high load melt index (HLMI), as measured according to ISO 1133:1997 condition G at 190 °C and under a load of 21.6 kg, of at least 10.5 and a melt index (MI2) of at least 0.5 g/10 min to at most 1.5 g/10 min as measured according to ISO 1133, condition D, at 190 °C and under a load of 2.16 kg. The invention further relates to a process for preparing said polyethylene resin, to a cap or closure comprising said polyethylene, and to a process for producing such a cap or closure.

    OLEFIN POLYMERIZATION PROCESSES
    5.
    发明申请
    OLEFIN POLYMERIZATION PROCESSES 审中-公开
    烯烃聚合工艺

    公开(公告)号：WO2018038796A1

    公开(公告)日：2018-03-01

    申请号：PCT/US2017/038791

    申请日：2017-06-22

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

    Inventor： BAUCH, Christopher G. ,  ENGLEHORN, Blu E. ,  LAWSON, Kevin, W. ,  EDWARDS, Todd S. ,  TRAPP, Keith, W.

    IPC: C08F110/06 ,  C08F2/00 ,  C08F4/642 ,  C08F10/06

    CPC classification number: C08F6/006 ,  C08F2410/01 ,  C08F210/16 ,  C08F2/001 ,  C08F110/06 ,  C08F2500/12 ,  C08F4/642 ,  C08F10/06 ,  C08L23/10

    Abstract: A process for reducing the level of hydrogen in certain polymerization effluent and recycle streams containing unreacted propylene monomers and hydrogen by contacting the streams with a hydrogenation catalyst so as to convert at least part of the propylene to the corresponding alkane. The process is particularly applicable to the effluent from a slurry polymerization reactor which has been used to produce a polypropylene homopolymer or copolymer having a first molecular weight and at least part of the effluent is to be supplied to a slurry polymerization reactor to produce a polypropylene homopolymer or copolymer having a second, higher molecular weight.

    Abstract translation: 通过使物流与氢化催化剂接触以降低某些聚合流出物和含有未反应的丙烯单体和氢气的再循环料流中的氢含量以便将至少部分的丙烯转化为相应的 烷烃。 该方法特别适用于来自淤浆聚合反应器的流出物，其已用于生产具有第一分子量的聚丙烯均聚物或共聚物，并且将至少部分流出物供应至淤浆聚合反应器以生产聚丙烯均聚物 或具有第二较高分子量的共聚物。

    ALKALI-SWELLABLE EMULSION POLYMERS
    6.
    发明申请
    ALKALI-SWELLABLE EMULSION POLYMERS 审中-公开
    碱可溶胀的乳液聚合物

    公开(公告)号：WO2017112584A2

    公开(公告)日：2017-06-29

    申请号：PCT/US2016/067504

    申请日：2016-12-19

    Applicant: LUBRIZOL ADVANCED MATERIALS, INC.

    Inventor： HSU, Shui-Jen Raymond ,  YANG, Yi ,  XU, Qunhua

    IPC: C08F220/18

    CPC classification number: C08F220/18 ,  C08F2/001 ,  C08F2/24 ,  C08F2220/1808 ,  C08F220/06 ,  C08F2222/1026

    Abstract: The present technology relates to alkali-swellable emulsion polymers that are useful as rheology modifiers. More specifically the present technology relates to alkali-swellable emulsion polymers containing residues of a polyunsaturated amphiphilic macromonomer. In one aspect the disclosed polymers are useful for thickening aqueous surfactant containing compositions, while providing the compositions in which they are included excellent rheology properties, clarity, and the ability to stably suspend insoluble and particulate materials over long periods of time, as well as improved thickening efficiencies.

    Abstract translation: 本技术涉及可用作流变改性剂的碱溶胀性乳液聚合物。 更具体地说，本技术涉及含有多不饱和两亲大分子单体残基的碱可溶胀乳液聚合物。 在一个方面，所公开的聚合物可用于增稠含水表面活性剂的组合物，同时提供其中包含优异的流变学性质，透明度和长时间稳定地悬浮不溶性和微粒材料的能力的组合物，以及改进的 增稠效率。

    PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS
    8.
    发明申请
    PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS 审中-公开
    不相容催化剂之间的过渡过程

    公开(公告)号：WO2017108347A1

    公开(公告)日：2017-06-29

    申请号：PCT/EP2016/079099

    申请日：2016-11-29

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： BANAT, Yahya ,  HUMYDI-AL, Abdulaziz ,  FELLAHI, Said

    IPC: C08F2/00 ,  C08F2/01 ,  C08F2/34 ,  C08F4/6592

    CPC classification number: C08F2/34 ,  C08F2/001 ,  C08F2/01 ,  C08F4/6592 ,  C08F2410/05

    Abstract: The invention relates to a process for transitioning from a first continuous polymerization in a gas phase reactor conducted in the presence of a metallocene catalyst to a second polymerization conducted in the presence of a Ziegler-Natta catalyst in the gas phase reactor wherein the metallocene catalyst and the Ziegler-Natta catalysts are incompatible, the process comprising: (a) discontinuing the introduction of the metallocene catalyst into the gas phase reactor; (b) introducing an effective amount of cyclohexylamine into the reactor to at least partially deactivate the metallocene catalyst; (c) introducing an organometallic compound into the reactor and reacting the organometallic compound with cyclohexylamine; (d) degas the gas composition of the reactor and build up a new composition inside the reactor for the second polymerization with the Ziegler-Natta catalyst (e) introducing the Ziegler-Natta catalyst into the reactor.

    Abstract translation: 本发明涉及一种从在茂金属催化剂存在下进行的气相反应器中的第一次连续聚合转变为在Ziegler-Natta催化剂存在下进行的第二次聚合的方法， 气相反应器，其中茂金属催化剂和齐格勒 - 纳塔催化剂不相容，所述方法包括：（a）中止将茂金属催化剂引入气相反应器; （b）将有效量的环己胺引入反应器中以至少部分钝化茂金属催化剂; （c）将有机金属化合物引入反应器中并使有机金属化合物与环己胺反应; （d）使反应器的气体组合物脱气并在反应器内用Ziegler-Natta催化剂在第二次聚合反应中形成新组合物（e）将齐格勒 - 纳塔催化剂引入反应器中。

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