Granted Patent B2

US 12,503,670 · App. 18/073,242 · Granted Dec 23, 2025

Inventors: Walter Daniel Cummings (New Freedom, PA); Gregory Rosenberg (Towson, MD)

Assignee: Sterilex, LLC

C11D3/3932C11D3/3947

Abstract

Claims (80)

1 . An aqueous composition comprising:

a. a primary organic acid selected from: glycolic acid, benzoic acid, fumaric acid, caprylic acid, lactic acid, proprionic acid, a salt of any one of the foregoing organic acids and combinations thereof;

b. an ancillary organic acid that is different from the primary organic acid, the ancillary organic acid having a:

i. carbon chain length of C6 or less, and

ii. at least one pKa of from about 2 to about 7;

c. a biodispersant selected from: alkyl sulfosuccinate, alkyl sulfoacetate, a hydrolysis reaction products of alkyl amide; a metal salt of any one the foregoing and combinations thereof;

d. a chelant;

e. a pH buffering agent;

f. a defoamer; and

g. a coupling agent, wherein the coupling agent is iminodipropate alanate present in the aqueous composition at a concentration of from about 1% to about 10% by weight of the aqueous composition;

wherein the aqueous composition:

(a) has a pH of from about 3 to about 4; and

(b) is substantially free of:

i. peracids,

ii. peroxides selected from: organic peroxides, inorganic peroxides and combinations thereof, and

iii. inorganic acids.

2 . The aqueous composition of claim 1 , wherein the biodispersant is selected from: sodium dioctyl sulfosuccinate, disodium lauryl sulfosuccinate, sodium lauryl sulfoacetate and combinations thereof.

3 . The aqueous composition of claim 1 , wherein the biodispersant is sodium dioctyl sulfosuccinate.

4 . The aqueous composition of claim 3 , wherein the sodium dioctyl sulfosuccinate is present in the aqueous composition at from about 0.1% to about 10% by weight of the aqueous composition.

5 . The aqueous composition of claim 1

comprises the primary organic acid at from about 1% to about 15% by weight of the aqueous composition.

6 . The aqueous composition according to claim 1 , wherein the primary organic acid is glycolic acid.

7 . The aqueous composition of claim 1 , wherein the biodispersant is selected from: sodium dioctyl sulfosuccinate, disodium lauryl sulfosuccinate, sodium lauryl sulfoacetate and combinations thereof.

8 . The aqueous composition of claim 6 , wherein the biodispersant is sodium dioctyl sulfosuccinate.

9 . The aqueous composition of claim 8 , wherein the sodium dioctyl sulfosuccinate is present in the aqueous composition at from about 1.0% to about 10% by weight of the aqueous composition.

10 . The aqueous composition of claim 1 , wherein the defoamer is polyoxypropylene-polyethylene block copolymer and is present in the aqueous composition at from about 4% to about 15% by weight of the aqueous composition.

11 . A method of boosting biofilm kill of a peracid disinfectant/sanitizer use solution made from a peracid containing disinfectant/sanitizer concentrate, wherein:

(a) a first peracid disinfectant/sanitizer use solution:

i. comprises the aqueous peracid disinfectant/sanitizer concentrate and water,

ii. contains less than 800 ppm total of peracids selected from: peroxyacetic acid;

peroxyoctanoic acid; peroxysulfonic acid; peroxyformic acid; and combinations thereof,

iii. has a pH of from about 1 to about 5, and

iv. is characterized by a first efficacy of equal to or less than about a 5 log 10 reduction of a Pseudomonas aeruginosa biofilm after contact therewith for 10 minutes or more pursuant to ASTM E2871-12 (approved Apr. 1, 2012 & published in June of 2012); and

(b) a second peracid disinfectant/sanitizer use solution:

i. comprises the aqueous composition of claim 1 , the aqueous composition of claim 1 and water,

ii. contains less than 800 ppm total of peracids selected from: peroxyacetic acid; peroxyoctanoic acid; peroxysulfonic acid; peroxyformic acid; and combinations thereof;

iii. has a pH of from about 1 to about 5, and

iv. is characterized by a boosted efficacy equal to or greater than 6 log 10 reduction of Pseudomonas aeruginosa biofilm after contact therewith for 10 minutes or more pursuant to ASTM E2871-12 (approved Apr. 1, 2012 & published in June of 2012);

the method comprising:

(a) making the second peracid disinfectant/sanitizer use solution by mixing together the aqueous composition of claim 1 , the aqueous peracid disinfectant/sanitizer concentrate and water, and

(b) applying the second peracid disinfectant/sanitizer use solution to a hard surface.

12 . A clear aqueous composition consisting of:

a. at least one organic acid selected from:

i. glycolic acid,

ii. glycolic acid and an acid selected from: benzoic acid, a metal salt of benzoic acid, fumaric acid, a metal salt of fumaric acid, caprylic acid, a metal salt of caprylic acid, lactic acid, a metal salt of lactic acid, proprionic acid, a metal salt of proprionic acid and combinations thereof, or

iii. at least two organic acids selected from: benzoic acid, a metal salt of benzoic acid, fumaric acid, a metal salt of fumaric acid, caprylic acid, a metal salt of caprylic acid, lactic acid, a metal salt of lactic acid, proprionic acid, a metal salt of proprionic;

b. a biodispersant selected from: a sodium salt of an alkyl sulfosuccinate, a sodium salt of an alkyl sulfoacetate and combinations thereof;

c. a chelant;

d. an acidifying agent;

e. a pH buffering agent; and

f. a defoamer and a coupling agent;

wherein the aqueous composition has a pH of from about 3 to about 4; and

wherein the coupling agent is iminodipropate alanate present in the aqueous composition at a concentration of from about 1% to about 10% by weight of the aqueous composition.

13 . A kit comprising:

(a) a first container containing the aqueous composition of claim 1 ; and

(b) a second container containing an aqueous composition comprising peracetic acid.

14 . The kit of claim 13 , wherein the aqueous composition comprising peracetic acid:

(a) contains from about 4% to about 6% by weight of peracetic acid; and

(b) is substantially free of surfactant.

15 . A method of boosting an efficacy of a concentrated disinfectant/sanitizer that comprises one or more peracids at a total weight percentage of 800 ppm or less by weight of the concentrated disinfectant/sanitizer, the method comprising:

(a) making a use solution by mixing together the concentrated disinfectant/sanitizer, water and an aqueous composition comprising:

i. a primary organic acid selected from: glycolic acid, benzoic acid, fumaric acid, caprylic acid, lactic acid, proprionic acid, a salt of any one of the foregoing organic acids and combinations thereof,

ii. an ancillary organic acid that is different from the primary organic acid, the ancillary organic acid having a:

(1) carbon chain length of C6 or less, and

(2) at least one pKa of from about 2 to about 7,

iii. a biodispersant selected from: alkyl sulfosuccinate, alkyl sulfoacetate, a hydrolysis reaction products of alkyl amide; a metal salt of any one the foregoing and combinations thereof,

iv. a chelant;

v. a pH buffering agent;

vi. a defoamer; and

vii. a coupling agent, wherein the coupling agent is iminodipropate alanate present in the aqueous composition at a concentration of from about 1% to about 10% by weight of the aqueous composition; and

wherein the aqueous composition:

(1) has a pH of from about 3 to about 4; and

(2) is substantially free of:

A. peracids,

B. peroxides selected from: organic peroxides, inorganic peroxides and combinations thereof, and

C. inorganic acids;

wherein:

(a) a use solution consisting of the concentrated disinfectant/sanitizer diluted with water has a first efficacy,

(b) the use solution of (a) made by mixing together the concentrated disinfectant/sanitizer, water, and the aqueous composition has a second efficacy, and

(c) the second efficacy is from about 2 log 10 to about 5 log 10 cycles greater than the first efficacy against Pseudomonas aeruginosa after contact therewith for 10 minutes or more pursuant to ASTM E2871-19 (approved Jan. 1, 2019 & published in February of 2019).

Assignments (2)

Continuity (3)

References Cited (27)