	US 12,065,780 B2
	Modified sulfuric acid and uses thereof
Clay Purdy, Medicine Hat (CA); Markus Weissenberger, Calgary (CA); Markus Pagels, Calgary (CA); and Kyle G Wynnyk, Calgary (CA)
Assigned to SIXRING INC., Calgary (CA)
Filed by SixRing Inc., Calgary (CA)
Filed on Aug. 20, 2021, as Appl. No. 17/407,528.
Claims priority of application No. CA 3110390 (CA), filed on Feb. 25, 2021.
Prior Publication US 2022/0267955 A1, Aug. 25, 2022
Int. Cl. D21C 3/04 (2006.01); D21C 3/00 (2006.01); D21C 9/16 (2006.01)

CPC D21C 3/04 (2013.01) [D21C 3/003 (2013.01); D21C 9/163 (2013.01)]

20 Claims

1. An aqueous acidic composition comprising:

sulfuric acid;

a modifying agent comprising a carbonyl-containing nitrogenous base compound; and

a peroxide,

wherein the sulfuric acid and the carbonyl-containing nitrogenous base compound are present in a molar ratio ranging from 28:1 to 2:1, and

wherein the composition has a pH of less than 1.