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

IPC: D21C3/04 ,  D21C3/00 ,  D21C9/16

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.

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.

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

IPC: D21C3/04 ,  D21C3/00 ,  D21C9/16

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.