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    Gas phase olefins polymerization process operating in condensing mode
    12.
    发明授权
    Gas phase olefins polymerization process operating in condensing mode 有权

    公开(公告)号：US10941227B2

    公开(公告)日：2021-03-09

    申请号：US16065893

    申请日：2016-12-29

    Applicant: SABIC Global Technologies B.V.

    Inventor： Yahya Banat

    IPC: C08F210/16 ,  C08F210/02 ,  C08F2/34 ,  C08F210/06

    Abstract: The present invention concerns a process for the gas phase polymerization of at least one alpha-olefin comprising: polymerizing at least one alpha-olefin in a fluidized bed reactor with a polyolefin purging unit and a vent gas recovery system, wherein the fluidized bed reactor operates in a condensed mode or super condensed mode with a recycle stream comprising one or more alkane(s) having 3 to 5 C atoms, wherein further at least one additional alkane with 6 to 12 C atoms is added to the recycle stream in an amount so that it represents between 0.0095 mol. % and 7,0000 mol. % of the recycle stream composition introduced into the reactor.

    Raised temperature resistant pipes comprising an ethylene-based polymer
    13.
    发明授权
    Raised temperature resistant pipes comprising an ethylene-based polymer 有权

    公开(公告)号：US12287055B2

    公开(公告)日：2025-04-29

    申请号：US17312481

    申请日：2019-12-20

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Yahya Banat ,  Nasser Abdullah Al-Saif ,  Abdelhamid Mokdad

    IPC: F16L9/12 ,  C08F4/6592 ,  C08L23/08

    Abstract: The present invention relates to a pipe comprising an ethylene-based polymer, wherein the ethylene-based polymer: ⋅ comprises ≥0.10 mol % of units derived from 1-hexene, with regard to the total molar quantity of polymeric units of the ethylene-based polymer; ⋅ has an Mw/Mn as determined in accordance with ASTM D6474 (2012) of ≥2.5 and ≤4.0, preferably of ≥2.5 and ≤3.4; ⋅ has a density as determined in accordance with ASTM D792 (2008) of ≥925 and ≤945 kg/m3; and ⋅ in the molecular weight range of log(Mw) between 4.0 and 5.5, has a comonomer branch content of between 2 and 15 comonomer-derived branches per 1000 carbon atoms in the polymer, as determined via 13C NMR. Such pipe provides a desirably high long-term strength, as demonstrated by its high strain hardening modulus, as well as desirably high impact strength, as demonstrated by its high Charpy impact strength. Further, such pipe may be compliant with the PE-RT requirements of ISO 22391-1 (2009). For example, such pipe may be used for containing water at temperatures in the range of 40° C. to 80°.

    OLEFIN POLYMERISATION CATALYST AND PROCESS FOR MANUFACTURING THEREOF
    15.
    发明公开
    OLEFIN POLYMERISATION CATALYST AND PROCESS FOR MANUFACTURING THEREOF 审中-公开

    公开(公告)号：US20240343842A1

    公开(公告)日：2024-10-17

    申请号：US18682030

    申请日：2022-07-19

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Yahya Banat ,  Lidong Li ,  Nasser Abdullah AlSaif ,  Mohammad Al-Shibel

    IPC: C08F4/6592 ,  C08F4/02 ,  C08F4/642

    CPC classification number: C08F4/65925 ,  C08F4/025 ,  C08F4/6428

    Abstract: Process for producing a supported metallocene catalyst system includes: (i) preparing mixture (a) by mixing a metallocene with a cocatalyst; (ii) preparing mixture (b) by reacting an aluminium (II) with an amine (III)t;




    wherein each R6 and R10 is hydrogen or a C1-30 hydrocarbon; R7, R8, and R11 are C1-30 hydrocarbon; R9 is hydrogen or a functional moiety comprising at least one active hydrogen; (iii) providing a support material, into a reaction vessel; (iv) providing a solvent into the reaction vessel; (v) supplying mixture (a) and mixture (b) to the reaction vessel; (vi) subjecting the contents of the reaction vessel to a temperature of >60° C. for a period of >3 hrs to obtain a supported catalyst system; and (vii) removing the solvent from the supported catalyst system. Such process allows for the production of a supported metallocene catalyst system having reduced fouling in olefin polymerisation.

    PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS
    16.
    发明申请
    PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS 审中-公开

    公开(公告)号：US20200270373A1

    公开(公告)日：2020-08-27

    申请号：US16063935

    申请日：2016-11-29

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Yahya Banat ,  Abdulaziz Hamad Al-Humydi ,  Said Fellahi

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

    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.

    PROCESS FOR THE POLYMERIZATION OF OLEFINS
    17.
    发明申请
    PROCESS FOR THE POLYMERIZATION OF OLEFINS 审中-公开

    公开(公告)号：US20180251582A1

    公开(公告)日：2018-09-06

    申请号：US15750956

    申请日：2016-07-27

    Applicant: SABIC Global Technologies B.V.

    Inventor： Yahya Banat ,  Ahmad Abdullah Alshaiban ,  Osamah Al-Humaidan

    IPC: C08F10/06 ,  B01J8/20 ,  B01J8/18

    Abstract: The present invention relates to a process for the continuous preparation of a polyolefin in a reactor from one or more α-olefin monomers of which at least one is ethylene or propylene, wherein the reactor comprises a fluidized bed, an expanded section located at or near the top of the reactor, a distribution plate located at the lower part of the reactor and an inlet for a recycle stream located under the distribution plate wherein the process comprises—feeding a polymerization catalyst to the fluidized bed in the area above the distribution plate—feeding the one or more α-olefin monomers to the reactor—withdrawing the polyolefin from the reactor—circulating fluids from the top of the reactor to the bottom of the reactor, wherein the circulating fluids are compressed using a compressor and subsequently cooled using a heat exchanger to form a cooled recycle stream comprising liquid, and wherein the cooled recycle stream is introduced into the reactor using the inlet for the recycle stream wherein a part of the cooled recycle stream is drawn to form a liquid comprising stream, wherein the liquid comprising stream is introduced into the expanded section during at least part of the polymerization process, and wherein the liquid comprising stream is brought into contact with at least part of the interior surface of the expanded section.

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