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    Synthesis of cyclic organic compounds and metallocenes
    1.
    发明授权
    Synthesis of cyclic organic compounds and metallocenes 有权

    公开(公告)号：US11479573B2

    公开(公告)日：2022-10-25

    申请号：US17159791

    申请日：2021-01-27

    申请人： Univation Technologies, LLC

    发明人： Angela I. Padilla-Acevedo ,  Roger L. Kuhlman

    IPC分类号： C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C07C45/48 ,  C08F4/76 ,  C08F10/02 ,  C07C45/45

    摘要： A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclopentene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclopentene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.

    Producing a polyethylene polymer
    3.
    发明授权
    Producing a polyethylene polymer 有权

    公开(公告)号：US11421054B2

    公开(公告)日：2022-08-23

    申请号：US17078342

    申请日：2020-10-23

    申请人： Univation Technologies, LLC

    发明人： Samuel Bernal ,  Mark G. Goode ,  Francois Alexandre ,  William A. Matthews

    IPC分类号： C08F110/02 ,  C08F2/34 ,  C08F4/69 ,  C08F2/38 ,  C08F10/02

    摘要： The present disclosure provides for a system and method for producing a polyethylene polymer (PE) that includes measuring a melt flow index (MFI) of the PE, comparing the measured value of the MFI to a predetermined desired range for the MFI, changing a catalyst feed rate to the polymerization reactor based on the compared values of the MFI, where changes in the catalyst feed rate preemptively compensate for subsequent changes in an oxygen flow rate to the polymerization reactor that maintain a predetermined residence time and bring the MFI of the PE into the predetermined desired range for the MFI; and changing the oxygen flow rate to the polymerization reactor thereby maintaining both the predetermined residence time and bringing the MFI of the PE into the predetermined desired range for the MFI. The measuring and comparing steps are repeated to ensure the measured value of the MFI is within the predetermined desired range of the MFI at the predetermined residence time.

    Method of determining a relative decrease in catalytic efficacy of a catalyst in a catalyst solution
    6.
    发明授权
    Method of determining a relative decrease in catalytic efficacy of a catalyst in a catalyst solution 有权

    公开(公告)号：US11203651B2

    公开(公告)日：2021-12-21

    申请号：US16617390

    申请日：2018-06-01

    申请人： Univation Technologies, LLC

    发明人： Ian M. Munro ,  C. Jeff Harlan

    IPC分类号： C08F10/14 ,  G01N25/48 ,  C08F2/06 ,  C08F4/76

    摘要： The present disclosure provides a method of determining a relative decrease in catalytic efficacy of a catalyst in a test sample of a catalyst solution with unknown catalytic activity. The method includes (a) mixing the test sample with a test solvent to form a test mixture and (b) measuring the increase in the temperature of the test mixture at predetermined time intervals immediately after forming the test mixture. A predetermined feature is used to determine both a test value in the increase in temperature measured in (b) and a control value in a known increase in temperature of a control mixture of the test solvent with a control sample of a control catalyst solution. The relative decrease in catalytic efficacy of the catalyst in the test sample having the unknown catalytic activity is then determined from: Relative Decrease in Catalytic Efficacy=Control Value−Test Value/Control Value.

    Synthesis of cyclic organic compounds and metallocenes
    7.
    发明授权
    Synthesis of cyclic organic compounds and metallocenes 有权

    公开(公告)号：US11059840B2

    公开(公告)日：2021-07-13

    申请号：US16649929

    申请日：2018-09-19

    申请人： Univation Technologies, LLC

    发明人： Angela I. Padilla-Acevedo ,  Roger L. Kuhlman

    IPC分类号： C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F110/02

    摘要： A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclohexene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclohexene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.

    Producing a polyethylene polymer
    9.
    发明授权
    Producing a polyethylene polymer 有权

    公开(公告)号：US11014998B2

    公开(公告)日：2021-05-25

    申请号：US16462610

    申请日：2017-11-27

    申请人： Univation Technologies, LLC

    发明人： Samuel Bernal ,  Mark G. Goode ,  Francois Alexandre ,  William A. Matthews

    IPC分类号： C08F10/02 ,  C08F4/69 ,  C08F2/34 ,  C08F2/38 ,  C08F110/02

    摘要： The present disclosure provides for a system and method for producing a polyethylene polymer (PE) that includes measuring a melt flow index (MFI) of the PE, comparing the measured value of the MFI to a predetermined desired range for the MFI, changing a catalyst feed rate to the polymerization reactor based on the compared values of the MFI, where changes in the catalyst feed rate preemptively compensate for subsequent changes in an oxygen flow rate to the polymerization reactor that maintain a predetermined residence time and bring the MFI of the PE into the predetermined desired range for the MFI; and changing the oxygen flow rate to the polymerization reactor thereby maintaining both the predetermined residence time and bringing the MFI of the PE into the predetermined desired range for the MFI. The measuring and comparing steps are repeated to ensure the measured value of the MFI is within the predetermined desired range of the MFI at the predetermined residence time.

    Synthesis of cyclic organic compounds and metallocenes
    10.
    发明授权
    Synthesis of cyclic organic compounds and metallocenes 有权

    公开(公告)号：US10988497B2

    公开(公告)日：2021-04-27

    申请号：US16649936

    申请日：2018-09-19

    申请人： Univation Technologies, LLC

    发明人： Angela I. Padilla-Acevedo ,  Roger L. Kuhlman

    IPC分类号： C07F17/00

    摘要： A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cycloheptene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cycloheptene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.