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    Processes for converting C4 feeds to isobutylene, polyisobutylene, or derivatives thereof
    1.
    发明授权
    Processes for converting C4 feeds to isobutylene, polyisobutylene, or derivatives thereof 有权

    公开(公告)号：US12116426B1

    公开(公告)日：2024-10-15

    申请号：US18738432

    申请日：2024-06-10

    Applicant: NTP Tec, LLC

    Inventor： Clyde Edward Baxter, Jr. ,  Mark W. Roll ,  Billy W. Waycaster

    IPC: C08F10/10 ,  C07C5/27

    CPC classification number: C08F10/10 ,  C07C5/2767

    Abstract: Embodiments described herein generally relate to new processes for converting C4 feeds to isobutylene. In an embodiment is provided a process for forming isobutylene that includes hydroisomerizing 1,3-butadiene present in a C4 feed to form a hydroisomerization product effluent comprising isobutylene and 2-butene; and forming an isobutylene feed by separating the isobutylene from the hydroisomerization product effluent. Embodiments of the present disclosure also generally relate to new processes for converting C4 feeds to polyisobutylene. In an embodiment is provided a process that includes hydroisomerizing a C4 feed comprising 1,3-butadiene in a hydroisomerization reactor to form a hydroisomerization product effluent comprising isobutylene and 2-butene; separating the isobutylene from the hydroisomerization product effluent to form a first isobutylene-containing feed; forming a reaction mixture comprising a polymerization catalyst and the first isobutylene-containing feed; and reacting the reaction mixture, in a polymerization reactor, to form a polymerization product effluent comprising polyisobutylene.

    MODIFIED POLYISOBUTYLENE POLYMER FOR RUBBER COMPOUNDING AND RUBBER COMPOSITION INCLUDING SAME
    4.
    发明申请
    MODIFIED POLYISOBUTYLENE POLYMER FOR RUBBER COMPOUNDING AND RUBBER COMPOSITION INCLUDING SAME 有权

    公开(公告)号：US20220081540A1

    公开(公告)日：2022-03-17

    申请号：US17476957

    申请日：2021-09-16

    Applicant: DL Chemical CO., LTD.

    Inventor： Min Sup PARK ,  Se Hyun Lee ,  Seung Bin Ryu ,  Myeong Seok Kim

    IPC: C08L9/06 ,  C08F10/10

    Abstract: Disclosed is a modified polyisobutylene polymer for rubber compounding. The modified polyisobutylene polymer is prepared by reacting reactants including a polyisobutylene in which the main chain is isobutylene, an unsaturated dicarboxylic anhydride, and an amino group-containing silane compound. The modified polyisobutylene polymer includes a diamide structure. When the modified polyisobutylene polymer is used as an additive for rubber compounding, the processability of the rubber is increased, the dispersibility of fillers is significantly improved, and the effect of obtaining excellent grip performance and improved rolling resistance can be achieved.

    Polymerization Catalyst System and Process to Produce Highly Reactive Polyisobutylene
    5.
    发明申请
    Polymerization Catalyst System and Process to Produce Highly Reactive Polyisobutylene 有权

    公开(公告)号：US20220025076A1

    公开(公告)日：2022-01-27

    申请号：US17382138

    申请日：2021-07-21

    Applicant: Indian Oil Corporation Limited

    Inventor： Rajasekhar TOTA ,  Gurmeet SINGH ,  Rashmi RANI ,  Sujit MONDAL ,  Gurpreet Singh KAPUR ,  Sankara Sri Venkata RAMAKUMAR

    IPC: C08F4/14 ,  C08F2/06 ,  C08F10/10 ,  C08F2/01 ,  C08F2/38

    Abstract: The present invention provides a method for producing highly reactive polyisobutylene by liquid phase polymerization of isobutylene or isobutylene containing feed stock, wherein at least 70 mole % of polymer chains in the polyisobutylene have exo olefin end groups. Further, the present invention provides a catalyst composition for polymerization, comprising of a Lewis acid complexed with at least two Lewis bases selected from sterically hindered ether and linear dialkyl ether; or a Lewis base complexed with at least two Lewis acids selected from aluminium halides mixture. The present invention additionally provides that Lewis acid with Lewis bases mixture or Lewis base with Lewis acids mixture constituting the catalyst show synergistic effect resulting in high isobutylene conversion and production of polyisobutylene having high exo olefin content, while maintaining desired molecular weight range of 250-10000 Dalton.

    Method for forming highly reactive olefin functional polymers
    9.
    发明授权
    Method for forming highly reactive olefin functional polymers 有权

    公开(公告)号：US10829573B1

    公开(公告)日：2020-11-10

    申请号：US16418229

    申请日：2019-05-21

    Applicant: Infineum International Limited

    Inventor： Phillip Dimitrov ,  Richard J. Severt ,  Peter J. Hobin ,  Kyle Nesti

    IPC: C08F10/10

    Abstract: A process for the preparation of polybutene having an exo-olefin content of at least 50 mol. % from an isobutene-containing monomer feedstock, which process comprises contacting said isobutene-containing feedstock with a Lewis acid catalyst complexed with a Lewis base, in an apolar polymerization medium, and initiating polymerization of said isobutene-containing feedstock. The Lewis acid catalyst is of formula R′AlCl2, wherein R′ is hydrocarbyl; the Lewis base is a dihydrocarbyl ether wherein each hydrocarbyl group is independently selected from C1-C8 hydrocarbyl groups and one or both hydrocarbyl groups of the dihydrocarbyl ether are substituted with an electron-withdrawing group; and the initiator is a compound of formula RX, wherein X is a halide; R is a hydrocarbyl group capable of forming a stable carbocation, and the carbon linking group R to group X is tertiary, benzylic, or allylic.

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