公开(公告)号：US20220267952A1

公开(公告)日：2022-08-25

申请号：US17407424

申请日：2021-08-20

Applicant: SixRing Inc.

Inventor： Clay PURDY ,  Markus WEISSENBERGER ,  Markus PAGELS ,  Kyle G. WYNNYK

IPC: D21C3/00

Abstract: An aqueous composition comprising: sulfuric acid; an alkanesulfonic acid; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.

公开(公告)号：US20240318381A1

公开(公告)日：2024-09-26

申请号：US18736335

申请日：2024-06-06

Applicant: SixRing Inc.

Inventor： Clay PURDY ,  Markus WEISSENBERGER ,  Markus PAGELS ,  Kyle G. WYNNYK

IPC: D21C3/00 ,  D21C3/04 ,  D21C3/22

CPC classification number: D21C3/003 ,  D21C3/04 ,  D21C3/22

Abstract: One-pot processes to separate lignin from a lignocellulosic feedstock include providing a vessel; providing a lignocellulosic feedstock; providing a composition comprising an acid, a modifying agent comprising an alkanesulfonic acid, and a peroxide; and 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. In some instances, such one-pot process can further include removing a liquid phase comprising dissolved lignin fragments from a solid phase comprising cellulose fibres.