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    Fischer Esterification of Lignin-Derived Material
    12.
    发明申请
    Fischer Esterification of Lignin-Derived Material 有权

    公开(公告)号：US20250042834A1

    公开(公告)日：2025-02-06

    申请号：US18793609

    申请日：2024-08-02

    Applicant: SixRing Inc.

    Inventor： Matthew DEWIT ,  Andrew C. CORBETT ,  Markus WEISSENBERGER

    IPC: C07C67/08

    Abstract: A method for converting a lignin-derived material into at least one esterified lignin derivative, said method comprising the steps of: providing said lignin-derived material selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; providing an acidic composition having a pH of less than 1, said acidic composition comprising: an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and an alcohol selected from the group consisting of C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; combining said lignin-derived material with said acidic composition into a reaction mixture; heating up said mixture to a temperature ranging from 25° C. to 120° C.; and allowing sufficient time of reaction to convert at least a portion of said lignin-derived material into said at least one esterified lignin derivative.

    PROCESS FOR MANUFACTURING OF NANOCRYSTALLINE CELLULOSE (NCC)
    13.
    发明公开
    PROCESS FOR MANUFACTURING OF NANOCRYSTALLINE CELLULOSE (NCC) 审中-公开

    公开(公告)号：US20240209121A1

    公开(公告)日：2024-06-27

    申请号：US18392146

    申请日：2023-12-21

    Applicant: SixRing Inc.

    Inventor： Elsayed ADBELFATAH ,  Alejandra ENRIQUEZ ,  Markus WEISSENBERGER

    IPC: C08B15/02 ,  C08B1/00 ,  C08L1/04

    CPC classification number: C08B15/02 ,  C08B1/00 ,  C08L1/04

    Abstract: A process to manufacture nanocrystalline cellulose from cellulose having a low hemicellulose content, said process comprising the steps of:



    exposing said cellulose to a microemulsion composition for a first pre-determined period of time, thereby creating a soaked cellulose;
    optionally, exposing the soaked cellulose to a sonication step for a second predetermined period of time; and
    exposing the resulting mixture to a H2O2 with FeSO4 or CuSO4 under acidic conditions for a third pre-determined period causing hydrolysis of the cellulose;
    wherein the nanocrystalline cellulose will have a crystallinity index of more than 50% and an aspect ratio ranging from 10:1 length to width to 50:1 length to width.

    Temperature-controlled delignification of biomass
    14.
    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.

    Improvements In Biomass Fermentation into Ethanol
    15.
    发明公开
    Improvements In Biomass Fermentation into Ethanol 审中-公开

    公开(公告)号：US20240060094A1

    公开(公告)日：2024-02-22

    申请号：US18452169

    申请日：2023-08-18

    Applicant: SixRing Inc.

    Inventor： Alexandra OSTASZEWSKI ,  Julie GREER ,  Alejandra ENRIQUEZ ,  Kyle G. WYNNYK ,  Andrew CORBETT ,  Markus WEISSENBERGER

    IPC: C12P7/10

    CPC classification number: C12P7/10

    Abstract: A method of obtaining ethanol from a lignocellulosic biomass comprises delignification of a lignocellulosic biomass using a modified Caro's acid. Next a solid portion of the delignification reaction mixture is recovered wherein the solid portion comprises a substantially hemicellulose-free cellulosic component which includes at most, up to 15% w/w hemicellulose. Next, the recovered solid portion of the resulting reaction mixture is exposed to an enzyme mix comprising cellulase enzymes to create a saccharification system that breaks down the cellulose into a saccharified composition such as oligosaccharides. The saccharified composition is then fed to an organism, such as yeast, with the ability to ferment sugars into ethanol.

    TEMPERATURE-CONTROLLED DELIGNIFICATION OF BIOMASS
    17.
    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.

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