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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.
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公开(公告)号：US20220170206A1
公开(公告)日：2022-06-02
申请号：US17405026
申请日：2021-08-18
Applicant: SixRing Inc.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G WYNNYK , Matthew DEWIT , Andrew C CORBETT
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 capping agent; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material. Also disclosed are compositions to accomplish such delignification and processes using such.
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公开(公告)号：US20240368834A1
公开(公告)日：2024-11-07
申请号：US18773189
申请日：2024-07-15
Applicant: SIXRING INC.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G. WYNNYK , Matthew DEWIT , Andrew M. CORBETT
Abstract: Compositions comprising an acid; a modifying agent selected from the group consisting of sulfamic acid, imidazole, N-alkylimidazoles, taurine, taurine derivatives, taurine-related compounds, alkylsulfonic acids, arylsulfonic acids, triethanolamine and combinations thereof; a metal salt; and a peroxide.
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公开(公告)号：US20220186434A1
公开(公告)日：2022-06-16
申请号：US17404199
申请日：2021-08-17
Applicant: SixRing Inc.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G. WYNNYK , Matthew DEWIT , Andrew C. CORBETT
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 modifying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole derivative; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; adding an organic solvent to the resulting mixture; allowing a delignification reaction to occur for a period of time sufficient to remove at least 80% of the lignin present on said plant material.
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公开(公告)号：US20240209159A1
公开(公告)日：2024-06-27
申请号：US18392952
申请日：2023-12-21
Applicant: SixRing Inc.
Inventor： Alejandra ENRIQUEZ , Matthew DEWIT , Kyle G. WYNNYK , Markus WEISSENBERGER
Abstract: A method for removing the constituents of a biomass into separate streams, where said method comprises the following steps:
Step 1: providing a biomass feedstock comprising: cellulose; hemicellulose; and lignin;
Step 2: exposing said biomass to a first acidic composition comprising an acid selected from the group consisting of: mineral acids; organic acids; modified acids; synthetic acids; and combinations thereof; for a first period of time sufficient to dissolve at least 50% of the hemicellulose present in said biomass;
Step 3: separating and recovering into a first liquid stream, the dissolved hemicellulose from the remaining biomass;
Step 4: exposing the remaining biomass mixture to a modified Caro's acid selected from the group consisting of:
composition A; composition B and Composition C;
wherein said composition A comprises:
sulfuric acid in an amount ranging from 20 to 70 wt % of the total weight of the composition;
a compound comprising an amine moiety and a sulfonic acid moiety selected from the group consisting of: taurine; taurine derivatives; and taurine-related compounds; and
a peroxide;
wherein said composition B comprises:
an alkylsulfonic acid; and
a peroxide; wherein the acid is present in an amount ranging from 40 to 80 wt % of the total weight of the composition and where the peroxide is present in an amount ranging from 10 to 40 wt % of the total weight of the composition;
wherein said composition C comprises:
sulfuric acid;
a compound comprising an amine moiety;
a compound comprising a sulfonic acid moiety; and
a peroxide;
for a first period of time sufficient to dissolve enough of the lignin present in said remaining biomass mixture to obtain a kappa number for the cellulose of less than 5;
for a first period of time sufficient to dissolve enough of the lignin present in said remaining biomass mixture to obtain a kappa number for the cellulose of less than 5;
Step 5: recovering into a second liquid stream the dissolved lignin from the resulting reaction mixture, wherein said solid portion comprises cellulose fibers with, at most, 7.5 wt % hemicellulose.-
Patent Agency Ranking
公开(公告)号：US20220195665A1
公开(公告)日：2022-06-23
申请号：US17405029
申请日：2021-08-18
Applicant: SixRing Inc.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G WYNNYK , Matthew DEWIT , Andrew C CORBETT
IPC: 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 modifying agent selected from the group consisting of: sulfamic acid; imidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; aryl sulfonic acid; triethanolamine; and combinations thereof; a metal salt; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.
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公开(公告)号：US20250043507A1
公开(公告)日：2025-02-06
申请号：US18793649
申请日：2024-08-02
Applicant: SixRing Inc.
Inventor： Matthew DEWIT , Markus WEISSENBERGER
Abstract: Method for controlled delignification of lignocellulosic feedstock and conversion of lignin depolymerization products into at least one ester compound, said method comprising the steps of: 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; a source of peroxide; an alcohol selected from the group consisting of C1-C6 linear alcohol and C3-C6 branched alcohol and mixtures thereof; exposing said lignocellulosic feedstock to said acidic composition for a period of time sufficient for the acidic composition to react with the lignocellulosic feedstock to obtain a liquid phase containing lignin depolymerization products and diester compounds and a solid phase comprising cellulose fibers; optionally, separating the liquid phase from the solid phase recovering a mixture of diesters, lignin monomers and cellulose fibers; and optionally, separating said lignin depolymerization products from said diester compounds.
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公开(公告)号：US20220195664A1
公开(公告)日：2022-06-23
申请号：US17405028
申请日：2021-08-18
Applicant: SixRing Inc.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G. WYNNYK , Matthew DEWIT , Andrew C. CORBETT
Abstract: A process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of: providing said lignocellulosic feedstock; providing a composition comprising; an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; imidazole derivatives; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a peroxide salt; and a peroxide; exposing said lignocellulosic feedstock to said composition for a period of time sufficient to depolymerize substantially all of the lignin present in said lignocellulosic feedstock into lignin oligomers and lignin monomers; wherein said process is carried out at atmospheric pressure.
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公开(公告)号：US20220186436A1
公开(公告)日：2022-06-16
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 C CORBETT
IPC: 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.
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公开(公告)号：US20220186435A1
公开(公告)日：2022-06-16
申请号：US17405027
申请日：2021-08-18
Applicant: SixRing Inc.
Inventor： Clay PURDY , Markus WEISSENBERGER , Markus PAGELS , Kyle G WYNNYK , Matthew DEWIT , Andrew C CORBETT
IPC: D21C3/04
Abstract: Method for controlled delignification of lignocellulosic feedstock, said method comprising the steps of: providing a reactive phase of pH less than 1, said reactive phase comprising: water; sulfuric acid; a source of peroxide; a modifying agent, said modifying agent adapted to control the reactivity of the sulfuric acid; providing a holding phase, said holding phase comprising an organic solvent which does not react with the aqueous acidic composition; combining said reactive phase and holding phase to form a reaction mixture; exposing a lignocellulosic material to said reaction mixture for a period of time sufficient to allow delignification of the lignocellulosic material.
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