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    Temperature-controlled delignification of biomass
    3.
    发明授权
    Temperature-controlled delignification of biomass 有权

    公开(公告)号：US11982051B2

    公开(公告)日：2024-05-14

    申请号：US17807179

    申请日：2022-06-16

    Applicant: SixRing Inc.

    Inventor： Markus Weissenberger ,  Emhemmed Youssef ,  Markus Pagels

    IPC: D21C3/00 ,  D21C3/04

    CPC classification number: D21C3/003 ,  D21C3/04

    Abstract: A process to delignify biomass, said process comprising the steps of:



    providing a vessel;
    providing biomass comprising lignin, hemicellulose and cellulose fibers into said vessel;
    providing a aqueous acidic composition comprising a sulfuric acid component;
    providing a peroxide component;
    exposing said biomass to said sulfuric acid component and peroxide component, creating a reaction mass;
    allowing said sulfuric acid component and peroxide component to come into contact with said biomass for a period of time sufficient to a delignification reaction to occur and remove over 90 wt % of said lignin and hemicellulose from said biomass; and
    controlling the temperature of the delignification reaction to maintain it below 55° C.

    TEMPERATURE-CONTROLLED DELIGNIFICATION OF BIOMASS
    4.
    发明申请
    TEMPERATURE-CONTROLLED DELIGNIFICATION OF BIOMASS 有权

    公开(公告)号：US20220412001A1

    公开(公告)日：2022-12-29

    申请号：US17807179

    申请日：2022-06-16

    Applicant: SixRing Inc.

    Inventor： Markus Weissenberger ,  Emhemmed Youssef ,  Markus Pagels

    IPC: D21C3/00 ,  D21C3/04

    Abstract: A process to delignify biomass, said process comprising the steps of: providing a vessel; providing biomass comprising lignin, hemicellulose and cellulose fibers into said vessel; providing a aqueous acidic composition comprising a sulfuric acid component; providing a peroxide component; exposing said biomass to said sulfuric acid component and peroxide component, creating a reaction mass; allowing said sulfuric acid component and peroxide component to come into contact with said biomass for a period of time sufficient to a delignification reaction to occur and remove over 90 wt % of said lignin and hemicellulose from said biomass; and controlling the temperature of the delignification reaction to maintain it below 55° C.

    Approach to biomass delignification
    6.
    发明授权
    Approach to biomass delignification 有权

    公开(公告)号：US11821139B2

    公开(公告)日：2023-11-21

    申请号：US17405031

    申请日：2021-08-18

    Applicant: SixRing Inc.

    Inventor： Clay Purdy ,  Markus Weissenberger ,  Markus Pagels ,  Kyle G Wynnyk ,  Matthew Dewit ,  Andrew M Corbett

    IPC: D21C3/04

    CPC classification number: D21C3/04

    Abstract: Method of delignification of plant material, said method comprising:



    providing said plant material comprising cellulose fibres and lignin;
    exposing said plant material requiring to a composition comprising:

    an acid;
    a modifiying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof;
    a metal oxide; and
    a peroxide;

    for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.

    Modified sulfuric acid and uses thereof
    7.
    发明授权
    Modified sulfuric acid and uses thereof 有权

    公开(公告)号：US12270151B2

    公开(公告)日：2025-04-08

    申请号：US18638250

    申请日：2024-04-17

    Applicant: SixRing Inc.

    Inventor： Clay Purdy ,  Markus Weissenberger ,  Markus Pagels ,  Kyle G Wynnyk

    IPC: D21C3/04 ,  D21C3/00 ,  D21C9/16

    Abstract: A one-pot process to separate lignin from a lignocellulosic feedstock includes providing a vessel; providing a lignocellulosic feedstock; providing a composition comprising an acid, a modifying agent comprising a carbonyl-containing nitrogenous base compound, and a peroxide; exposing the lignocellulosic feedstock to the composition in the vessel for a period of time sufficient to remove at least 80% of the lignin present in the lignocellulosic feedstock; and optionally, removing a liquid phase comprising dissolved lignin fragments from a solid phase comprising cellulose fibres.

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