US 11,884,620 B2
Use of polyamines in the pretreatment of biomass
Ezinne Achinivu, Alexandria, VA (US); Mood Mohan, Emeryville, CA (US); Hemant Choudhary, Emeryville, CA (US); Lalitendu Das, Emeryville, CA (US); Venkataramana R. Pidatala, Emeryville, CA (US); Harsha D. Magurudeniya, Newport News, VA (US); Kaixuan Huang, Albany, CA (US); John M. Gladden, Alameda, CA (US); and Blake A. Simmons, San Francisco, CA (US)
Assigned to THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US); and NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC, Albuquerque, NM (US)
Filed by THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US); and NATIONAL TECHNOLOGY AND ENGINEERING SOLUTIONS OF SANDIA, LLC, Albuquerque, NM (US)
Filed on Dec. 9, 2021, as Appl. No. 17/547,134.
Claims priority of provisional application 63/124,660, filed on Dec. 11, 2020.
Prior Publication US 2022/0194877 A1, Jun. 23, 2022
Int. Cl. C07C 7/08 (2006.01)
CPC C07C 7/08 (2013.01) 5 Claims
OG exemplary drawing
 
1. A method to deconstruct a biomass, the method comprising: (a) introducing a solvent comprising a polyamine to a biomass to dissolve at least part of solid biomass in the solvent, wherein the polyamine is a Brønsted or Lewis base, and/or the polyamine is a hydrogen bond donor and/or acceptor; wherein the polyamine has the chemical structure:

OG Complex Work Unit Chemistry
wherein X is C or N; and R1, R2, R3, and R4, are each independently —H, —NH2, alkyl, alkenyl, alkynyl, aryl, alkyl amine, alkenyl amine, alkynyl amine, or aryl amine.