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US 12,503,670 B2Granted
Peracid booster
AssigneeSterilex, LLC
InventorsWalter Daniel Cummings, Gregory Rosenberg
Life of this patent
Estimating the term…
Abstract
Aqueous compositions having an acidic pH comprise a primary organic acid, an ancillary organic acid that is different from the primary organic acid and a biodispersant. The aqueous compositions can be added to peracid containing disinfectant/sanitizer solutions to increase efficacy of peracids contained therein against microorganisms and/or biofilms.
Claims15
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.
18 more elements
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 more elements
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 log10 to about 5 log10 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).
24 more elements
Dependencies are inferred from the claim text.