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    Processes for producing poly alpha olefins and apparatuses therefor
    4.
    发明授权
    Processes for producing poly alpha olefins and apparatuses therefor 有权

    公开(公告)号：US12091380B2

    公开(公告)日：2024-09-17

    申请号：US17633918

    申请日：2020-06-03

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Monica D. Lotz ,  Jennifer L. Rapp ,  Patrick C. Chen ,  Md Safatul Islam

    IPC: C07C5/25 ,  C07C2/34 ,  C10M177/00

    CPC classification number: C07C5/25 ,  C07C2/34 ,  C10M177/00 ,  C07C2531/14 ,  C07C2531/22 ,  C10M2205/0285

    Abstract: The present disclosure provides processes and apparatus for producing poly alpha olefins. In at least one embodiment, a process to produce a poly alpha olefin includes introducing a first olefin monomer to a first catalyst and an activator in a first reactor to form a first reactor effluent comprising olefin dimers and olefin timers. The process includes heating the first reactor effluent to form an isomerized product and introducing the isomerized product to a filtration unit to form a filtration effluent. The process may include introducing the filtration effluent to a first distillation unit to form a first distillation effluent. The process may include introducing the first distillation effluent to a second distillation unit to form a second distillation effluent. The process includes introducing the first distillation effluent and/or the second distillation effluent to a second catalyst in a second reactor to form a second reactor effluent comprising the olefin timers.

    Processes to produce poly alpha-olefin trimers
    5.
    发明授权
    Processes to produce poly alpha-olefin trimers 有权

    公开(公告)号：US11525020B2

    公开(公告)日：2022-12-13

    申请号：US17360275

    申请日：2021-06-28

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Patrick C. Chen ,  Mark H. Li ,  Jennifer L. Rapp ,  Monica D. Lotz ,  Babak LotfizadehDehkordi ,  Craig J. Emett ,  Najeeb M. Kuzhiyil ,  Jian Yang

    IPC: C07C2/30 ,  C07C2/32 ,  C08F4/6592 ,  C08F10/14 ,  C08F4/659

    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin and a first catalyst system comprising a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes PAO dimer comprising at least 96 mol % of vinylidene and 4 mol % or less of trisubstituted vinylene and disubstituted vinylene, based on total moles of vinylidene, trisubstituted vinylene, and disubstituted vinylene. The method includes introducing the first reactor effluent, a second alpha-olefin and a second catalyst composition comprising an acid catalyst into a second reactor under second reactor conditions to form a second reactor effluent comprising PAO trimer.

    Production of olefin dimers
    7.
    发明授权
    Production of olefin dimers 有权

    公开(公告)号：US10358397B2

    公开(公告)日：2019-07-23

    申请号：US15948323

    申请日：2018-04-09

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Meagan E. Evans ,  Crisita Carmen H. Atienza ,  Jo Ann M. Canich ,  John R. Hagadorn ,  David A. Cano ,  Gregory S. Day ,  Patrick C. Chen

    IPC: C07C2/32 ,  B01J31/22 ,  C10G50/00

    Abstract: A process for producing alpha-olefin dimers comprises contacting, at a temperature of 80° C. or more, a feedstock comprising at least one C8+ (linear) alpha-olefin with a catalyst system comprising activator and one or more catalyst compounds represented by the formula: where M is a Group 4 metal; n is 1, 2, or 3; RA is hydrogen or a C1 to C10 alkyl; each of R1, R2, R3, R4, R5, R6, R7, and R8 is independently selected from hydrogen and C1 to C10 alkyl; each X is independently selected from the group consisting of hydrocarbyl radicals having from 1 to 20 carbon atoms, hydrides, amides, alkoxides, sulfides, phosphides, halides, and a combination thereof, (two X's may form a part of a fused ring or a ring system), the contacting being conducted under conditions effective to oligomerize at least part of C8+ alpha-olefin to produce an oligomerized product containing at least 30 wt % of the alpha-olefin dimer and at least 80 mol % of vinylidene unsaturation, where the conversion of the alpha olefin is at least 10 wt %, based upon the weight of the alpha olefin monomer entering the reactor and the weight of dimer produced.

    Processes to produce poly alpha-olefin trimers
    9.
    发明授权
    Processes to produce poly alpha-olefin trimers 有权

    公开(公告)号：US11078308B2

    公开(公告)日：2021-08-03

    申请号：US16537349

    申请日：2019-08-09

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Patrick C. Chen ,  Mark H. Li ,  Jennifer L. Rapp ,  Monica D. Lotz ,  Babak LotfizadehDehkordi ,  Craig J. Emett ,  Najeeb M. Kuzhiyil ,  Jian Yang

    IPC: C07C2/30 ,  C07C2/32 ,  C08F4/6592 ,  C08F10/14 ,  C08F4/659

    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin and a first catalyst system comprising a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes PAO dimer comprising at least 96 mol % of vinylidene and 4 mol % or less of trisubstituted vinylene and disubstituted vinylene, based on total moles of vinylidene, trisubstituted vinylene, and disubstituted vinylene. The method includes introducing the first reactor effluent, a second alpha-olefin and a second catalyst composition comprising an acid catalyst into a second reactor under second reactor conditions to form a second reactor effluent comprising PAO trimer.

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