US 12,258,310 B2
Solid peroxyalphahydroxycarboxylic acid generation compositions and the use thereof
Junzhong Li, Saint Paul, MN (US); Allison Prideaux, Saint Paul, MN (US); and Richard Staub, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Jul. 10, 2023, as Appl. No. 18/349,693.
Application 18/349,693 is a continuation of application No. 17/649,286, filed on Jan. 28, 2022, granted, now 11,739,058.
Claims priority of provisional application 63/199,856, filed on Jan. 29, 2021.
Prior Publication US 2023/0348374 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 407/00 (2006.01); C07C 409/24 (2006.01)
CPC C07C 407/00 (2013.01) 33 Claims
 
1. A peroxyalphahydroxycarboxylic acid forming composition comprising:
a) a diester of lactone of an alphahydroxycarboxylic acid,
b) an alkalinity source and/or a substance that generates hydrogen peroxide when in contact with a liquid; and
c) optionally an additional functional ingredient;
wherein the composition is a liquid when the diester of lactone and the alphahydroxycarboxylic acid is in solution with a solvent, and wherein the composition reacts to form the peroxyalphahydroxycarboxylic acid having a pH below about 8 within about 5 minutes after the diester of lactone of the alphahydroxycarboxylic acid and the alkalinity source and/or substance that generates hydrogen peroxide are contacted; or
wherein the composition is a solid, and wherein the solid composition reacts when dissolved in a liquid to form the peroxyalphahydroxycarboxylic acid having a pH below about 8 within about 5 minutes after the diester of lactone of the alphahydroxycarboxylic acid and the alkalinity source and/or substance that generates hydrogen peroxide are contacted.