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    Lewis base catalysts and methods thereof
    34.
    发明授权
    Lewis base catalysts and methods thereof 有权

    公开(公告)号：US11248070B2

    公开(公告)日：2022-02-15

    申请号：US16788124

    申请日：2020-02-11

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： Georgy P. Goryunov ,  Vladislav A. Popov ,  Dmitry V. Uborsky ,  Alexander Z. Voskoboynikov ,  John R. Hagadorn ,  Irene C. Cai ,  Jo Ann M. Canich

    IPC分类号： C08F10/14 ,  C08F10/06

    摘要： The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization as the Lewis base catalysts (e.g., bis(aryl phenolate) five-membered ring catalysts), can be stable at high polymerization temperatures and have good activity at the high polymerization temperatures. The stable catalysts with good activity can provide formation of polymers having high molecular weights or polymers having low to very molecular weights, and the ability to make an increased amount of polymer in a given reactor, as compared to conventional catalysts. Hence, the present disclosure demonstrates highly active catalysts capable of operating at high reactor temperatures while producing polymers with controlled molecular weights and or robust isotacticity.

    Solubility Improvement of Non-Metallocene Transition Metal Complexes in Aliphatic Hydrocarbon Solvents
    35.
    发明申请
    Solubility Improvement of Non-Metallocene Transition Metal Complexes in Aliphatic Hydrocarbon Solvents 有权

    公开(公告)号：US20210332164A1

    公开(公告)日：2021-10-28

    申请号：US17226659

    申请日：2021-04-09

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： John R. Hagadorn ,  Peijun Jiang ,  Francis C. Rix ,  Charles J. Harlan ,  Jo Ann M. Canich

    IPC分类号： C08F4/659

    摘要： It has become desirable to limit or exclude aromatic solvents, such as toluene, from polymerization reactions. For polymerization reactions employing a non-metallocene transition metal complex as a precursor to a polymerization catalyst, exclusion of aromatic solvents may be difficult due to the limited solubility of such complexes in aliphatic hydrocarbon solvents. Aliphatic hydrocarbon solutions suitable for conducting olefin polymerization reactions, particularly solution polymerization reactions, may comprise: a non-metallocene transition metal complex dissolved in an aliphatic hydrocarbon solvent at a concentration ranging from about 2 mM to about 20 mM at 25° C. in the presence of an organoaluminum compound. A molar ratio of aluminum of the organoaluminum compound to transition metal of the transition metal complex is about 1:1 or greater, and the organoaluminum compound comprises at least about 8 carbons per aluminum.

    Ethylene-a-olefin-diene elastomers and methods of making them
    37.
    发明授权
    Ethylene-a-olefin-diene elastomers and methods of making them 有权

    公开(公告)号：US11041034B2

    公开(公告)日：2021-06-22

    申请号：US16250710

    申请日：2019-01-17

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： Crisita Carmen H. Atienza ,  Rhutesh K. Shah ,  Ron Walker ,  John R. Hagadorn ,  Sudhin Datta

    IPC分类号： C08F210/16 ,  C08F210/02 ,  C08F210/06 ,  C08F236/04 ,  C08F236/20 ,  C08F4/64 ,  B01J31/18

    摘要： A process to produce a branched ethylene-α-olefin diene elastomer comprising combining a catalyst precursor and an activator with a feed comprising ethylene, C3 to C12 α-olefins, and a dual-polymerizable diene to obtain a branched ethylene-α-olefin diene elastomer; where the catalyst precursor is selected from pyridyldiamide and quinolinyldiamido transition metal complexes. The branched ethylene-α-olefin diene elastomer may comprise within a range from 40 to 80 wt % of ethylene-derived units by weight of the branched ethylene-α-olefin diene elastomer, and 0.1 to 2 wt % of singly-polymerizable diene derived units, 0.1 to 2 wt % of singly-polymerizable diene derived units, and the remainder comprising C3 to C12 α-olefin derived units, wherein the branched ethylene-α-olefin diene elastomer has a weight average molecular weight (Mw) within a range from 100 kg/mole to 300 kg/mole, an average branching index (g′avg) of 0.9 or more, and a branching index at very high Mw (g′1000) of less than 0.9.

    Non-coordinating anion type activators containing cation having branched alkyl groups
    38.
    发明授权
    Non-coordinating anion type activators containing cation having branched alkyl groups 有权

    公开(公告)号：US11041031B2

    公开(公告)日：2021-06-22

    申请号：US16394197

    申请日：2019-04-25

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： Catherine A. Faler ,  Margaret T. Whalley ,  John R. Hagadorn

    IPC分类号： C07F5/02 ,  C08F4/643 ,  C07C211/63 ,  C07C211/64 ,  C08F10/02 ,  C08F10/06 ,  C08F10/14 ,  C08F4/659

    摘要： The present disclosure provides borate or aluminate activators comprising cations having branched alkyl groups, catalyst systems comprising, and methods for polymerizing olefins using such activators. Specifically, the present disclosure provides activator compounds represented by Formula: [R1R2R3EH]d+[Mk+Qn]d−, wherein: E is nitrogen or phosphorous; d is 1, 2 or 3; k is 1, 2, or 3; n is 1, 2, 3, 4, 5, or 6; n−k=d; each of R1, R2, and R3 is independently C1-C40 branched or linear alkyl or C5-C50-aryl, wherein each of R1, R2, and R3 is independently unsubstituted or substituted with at least one of halide, C5-C50 aryl, C6-C35 arylalkyl, C6-C35 alkylaryl and, in the case of the C5-C50-aryl, C1-C50 alkyl; wherein R1, R2, and R3 together comprise 15 or more carbon atoms; M is an element selected from group 13 of the Periodic Table of the Elements; and each Q is independently a hydride, bridged or unbridged dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, or halosubstituted-hydrocarbyl radical, provided that at least one of R1, R2, and R3 is a branched alkyl.