Granted Patent B2

US 12,558,713 · App. 17/452,100 · Granted Feb 24, 2026

Inventors: Junzhong Li (Saint Paul, MN); Caleb Power (Saint Paul, MN); Allison Prideaux (Saint Paul, MN); Richard K. Staub (Saint Paul, MN); Vaideeswaran Sivaswamy (Saint Paul, MN); John Paul Koehl (Saint Paul, MN)

Assignee: Ecolab USA Inc.

B08B3/04C11D3/042C11D3/046C11D3/2075C11D3/2079C11D3/2082C11D3/3902C11D7/265B08B3/00

Abstract

Claims (45)

1 . A peroxycarboxylic acid forming composition with conductivity monitoring capability consisting of:

a C1-C22 carboxylic acid;

a hydrogen peroxide source;

water;

an ionic compound which is a peroxycarboxylic acid compatible magnesium salt or aluminum salt;

a stabilizing agent; and

optionally one or more additional functional ingredients selected from the group consisting of:

optical brighteners, defoaming agents, anti-redeposition agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, soil antideposition agents, corrosion inhibitors, builders, sequestrants, chelating agents, enzymes, fragrances, dyes, hydrotropes couplers, buffers, and solvents;

wherein a C1-C22 peroxycarboxylic acid is formed, and wherein the weight ratio of the ionic compound to the peroxycarboxylic acid is between about 5:1 to 1:5 to ensure a detectable conductivity signal.

2 . The composition of claim 1 , wherein the carboxylic acid is acetic acid, and the composition meets the requirement of organic certification.

3 . The composition of claim 1 , wherein the ionic compound is magnesium sulfate.

4 . The composition of claim 1 , wherein the C1-C22 carboxylic acid is present in an amount between about 10-50 wt-%, the hydrogen peroxide source is present in an amount between about 10-70 wt-%, the water is present in an amount from between about 0.1-20 wt-%, the ionic compound is present in an amount from between about 5-50 wt-%, and the stabilizing agent is present in an amount from between about 0-5 wt-%.

5 . A peroxycarboxylic acid composition with conductivity monitoring capability consisting of:

from about 5-20 wt-% of peroxyacetic acid;

from about 15-40 wt-% of acetic acid;

from about 5-50 wt-% of hydrogen peroxide;

water;

from about 5-50 wt-% of an ionic compound which is a peroxycarboxylic acid compatible magnesium salt or aluminum salt;

from about 0.001-5 wt-% of a stabilizing agent; and

optionally one or more additional functional ingredients selected from the group consisting of:

optical brighteners, defoaming agents, anti-redeposition agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, soil antideposition agents, corrosion inhibitors, builders, sequestrants, chelating agents, enzymes, fragrances, dyes, hydrotropes, couplers, buffers, and solvents.

6 . A use solution of peroxycarboxylic acid composition with conductivity monitoring capability consisting of:

a diluted composition formed from adding water to a concentrate composition, wherein the concentrate composition consists of:

from about 5-20 wt-% of a C 1 -22 peroxycarboxylic acid;

from about 10-50 wt-% of a C1-C22 carboxylic acid;

from about 5-70 wt-% of hydrogen peroxide;

from about 5-50 wt-% of an ionic compound which is a peroxycarboxylic acid compatible magnesium salt or aluminum salt;

from about 0-5 wt-% of a stabilizing agent; and

optionally one or more additional functional ingredients selected from the group consisting of:

optical brighteners, defoaming agents, anti-redeposition agents, bleaching agents, solubility modifiers, dispersants, metal protecting agents, soil antideposition agents, corrosion inhibitors, builders, sequestrants, chelating agents, enzymes, fragrances, dyes, hydrotropes, couplers, buffers, and solvents.

7 . The composition of claim 6 , wherein the ionic compound is magnesium sulfate.

8 . The composition of claim 6 , wherein weight ratio of the ionic compound to the peroxycarboxylic acid is between about 5:1 to about 1:5 to ensure sufficient conductivity readings.

9 . The composition of claim 6 , wherein the C1-C22 carboxylic acid is acetic acid and the C1-C22 peroxycarboxylic acid is peroxyacetic acid.

10 . The composition of claim 6 , wherein the weight ratio of the stabilizing agent to the ionic compound is between about 1:8 to about 1:15.

11 . The composition of claim 6 , wherein the use solution pH is between about 2 and about 9.

12 . The composition of claim 6 , wherein the use solution pH is between about 2 and about 5.

13 . The composition of claim 6 , wherein the composition is phosphorus free.

14 . The composition of claim 6 , wherein the stabilizing agent is dipicolinic acid and/or phosphonic acid.

15 . The composition of claim 6 , wherein the composition meets the requirement of organic certification.

16 . The composition of claim 6 , wherein the concentrate composition consists of:

from about 5-20 wt-% of a C1-C22 peroxycarboxylic acid;

from about 15-40 wt-% of a C1-C22 carboxylic acid;

from about 5-50 wt-% of hydrogen peroxide;

from about 5-50 wt-% of an ionic compound which is a peroxycarboxylic acid compatible magnesium salt or aluminum salt; and

from about 0.001-5 wt-% of a stabilizing agent.

Assignments (1)

Continuity (3)

References Cited (400)