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2337 条记录 (耗时 0.031 秒)

    Non-Coordinating Anion Activators Containing a Cation with Long Chain Alkoxy Functionalization
    31.
    发明申请
    Non-Coordinating Anion Activators Containing a Cation with Long Chain Alkoxy Functionalization 有权

    公开(公告)号：US20220388946A1

    公开(公告)日：2022-12-08

    申请号：US17771344

    申请日：2020-08-04

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： Catherine A. Faler ,  Margaret T. Whalley

    IPC分类号： C07C217/52 ,  C08F4/659

    摘要： Activators may comprise compounds represented by the Formula [Ar(EHR1R2)(OR3)]d+[Mk+Qn]d, wherein: Ar is an aryl group; E is nitrogen or phosphorous; R1 is a C1-C30, optionally substituted, linear alkyl group; R2 is a C1-C30, optionally substituted, linear alkyl group; R3 is a C10-C30, optionally substituted, linear alkyl group; M is an element selected from group 13 of the Periodic Table of the Elements; d is 1, 2 or 3; k is 1, 2, or 3; n is 1, 2, 3, 4, 5, or 6; n−k=d; and each Q is independently hydride, bridged or unbridged dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, or halosubstituted-hydrocarbyl radical. Catalysts systems may comprise these activators and methods of preparing polyolefins may use these catalysts systems.

    Process for the Polymerization of Olefins in Solution Comprising Deactivating the Polymerization Catalyst by Heat
    32.
    发明申请
    Process for the Polymerization of Olefins in Solution Comprising Deactivating the Polymerization Catalyst by Heat 有权

    公开(公告)号：US20220380498A1

    公开(公告)日：2022-12-01

    申请号：US17774967

    申请日：2020-12-07

    申请人： Borealis AG

    发明人： Mohammad Al-haj Ali ,  Michiel Bergstra ,  Erik Eriksson ,  Sameer Vijay ,  Christof Wumitsch ,  Samuli Zitting ,  Henry Sleijster ,  Noureddine Ajellal

    IPC分类号： C08F210/16 ,  C08F4/659

    摘要： The present invention relates to a polymerization process, comprising: a) supplying a feed containing ethylene and at least one alpha-olefin having 3 to 12 carbon atoms in a hydrocarbon solvent to a polymerization reactor, b) contacting the feed of step a) in the reactor with a catalyst to form a reaction mixture containing an ethylene-alpha-olefin co-polymer, c) withdrawing the reaction mixture from the polymerization reactor as a reactor outlet stream which comprises the ethylene-alpha-olefin co-polymer, unreacted monomer and comonomer, catalyst, and hydrocarbon solvent, d) heating the reactor outlet stream to a temperature which is at least 5° C. higher than the temperature of the reaction mixture at the outlet of the reactor for a time period of between 1 and 250 seconds in order to de-activate the polymerization catalyst, and e) separating hydrocarbon solvent, monomer and comonomer from the reactor outlet stream and recycling it back to the polymerization reactor without further purification steps.