公开(公告)号：US20240247438A1

公开(公告)日：2024-07-25

申请号：US18439589

申请日：2024-02-12

Applicant: SixRing Inc.

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

IPC: D21C3/04 ,  C01B15/04 ,  C09K3/00 ,  D21C3/00 ,  D21C9/16

CPC classification number: D21C3/04 ,  C01B15/04 ,  C09K3/00 ,  D21C3/003 ,  D21C9/163

Abstract: Disclosed herein are compositions comprising an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; an imidazole derivative; taurine; a taurine derivative; a taurine-related compound; an alkylsulfonic acid; an arylsulfonic acid; triethanolamine; and combinations thereof; a peroxide salt; and a peroxide. Also disclosed herein are compositions comprising an acid; a modifying agent comprising a compound containing an amine group and a compound comprising a sulfonic acid moiety; a peroxide salt; and a peroxide.

公开(公告)号：US11668047B2

公开(公告)日：2023-06-06

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 M Corbett

IPC: D21C3/04

CPC classification number: 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.