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US 10,477,862 B2Granted
In situ generation of peroxycarboxylic acids at alkaline pH, and methods of use thereof
AssigneeEcolab USA Inc.
InventorsJunzhong Li, David D. McSherry, Richard Staub
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Abstract
The present disclosure is related to percarboxylic acid compositions formed in situ in non-equilibrium reactions. The peroxycarboxylic acid compositions are formed using ester based starting materials. Methods for using the percarboxylic acid compositions are also disclosed.
Claims17
A peroxycarboxylic acid forming composition formed by a method comprising:
- combining an oxidizing agent with a source of alkalinity;
- adding a first reagent comprising an ester of a polyhydric alcohol and a C8 carboxylic acid;
- allowing the peroxycarboxylic acid composition to react for a sufficient amount of time such as a C8 peroxycarboxylic acid is formed;
- and thereafter
- adding a second reagent comprising an ester of a polyhydric alcohol and a C2 carboxylic acid;
- and
- optionally further adding one or more agents, wherein the one or more agents are a dispersing agent, and/or a solvent;
- wherein the first and second reagents have an HLB value of 3 or greater;
- and
- wherein the composition is not at equilibrium and has a pH greater than 12.
7 more elements
A peroxycarboxylic acid forming composition formed according to a method comprising:
- combining an oxidizing agent with one or more agents, wherein the one or more agents are a dispersing agent, and/or a solvent;
- adding a first reagent comprising an ester of a polyhydric alcohol and a C8 carboxylic acid;
- allowing the peroxycarboxylic acid composition to react for a sufficient amount of time such as a C8 peroxycarboxylic acid is formed;
- and thereafter
- adding a second reagent comprising an ester of a polyhydric alcohol and a C2 carboxylic acid;
- wherein the first and second reagents have an HLB value of 3 or greater;
- and
- wherein the composition is not at equilibrium and has a pH greater than 12.
5 more elements
Dependencies are inferred from the claim text.