US4587264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disinfection and sterilizing solution of peracetic acid and nitric acid
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Filing: 1983-02-03
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Granted: 1986-05-06
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Expires: 2003-02-03
Abstract
Abstract Commercial solutions of noncorrosive and time-stable carboxylic peracids, particularly peracetic acid, contain an acid of oxidizing nature, such as nitric acid, present in a weight percentage at least equal to that of the carboxylic peracid. Such solutions, diluted with ordinary water, are useful for the sterilization and microbiological disinfection of asceptic enclosures, and of equipment of the food industry, particularly the milk industry, with reduced risk of corrosion to the equipment.
Inventors
- 👤 Eric Jourdan-Laforte
- 👤 Daniel Le Rouzic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:57
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
48 words
A concentrated solution for dilution with chloride ion-containing water to provide a diluted non-corrosive disinfecting and sterilizing solution, said concentrated solution containing between 1 and 20% by weight of peracetic acid, further containing nitric acid in a weight percentage 3 to 5 times that of said peracetic acid.
Claim 2
Dependent Claim
48 words
A concentrated solution for dilution with chloride ion-containing water to provide a diluted non-corrosive disinfecting and sterilizing solution, said concentrated solution containing between 1 and 20% by weight of peracetic acid, further containing nitric acid in a weight percentage 3 to 5 times that of said peracetic acid.
Claim 3
Dependent Claim
20 words
The concentrated solution according to claim 1, wherein said solution contains between 2 and 5% by weight of peracetic acid.
Claim 4
Dependent Claim
30 words
The concentrated solution according to claim 2, wherein the concentration of said nitric acid is approximately 8% by weight up to 5 times the weight percentage of said peracetic acid.
Claim 5
Dependent Claim
34 words
A diluted non-corrosive disinfecting and sterilizing solution comprising the solution according to claim 3 diluted with ordinary chloride ion-containing water to provide a concentration of peracetic acid therein of between 30 and 300 mg/liter.
Claim 6
Dependent Claim
18 words
The concentrated solution according to claim 1 wherein the concentration of nitric acid is approximately 6-15% by weight.
Claim 7
Dependent Claim
21 words
The concentrated solution of claim 1 comprising approximately 2% by weight of peracetic acid and 8% by weight of nitric acid.
Claim 8
Dependent Claim
35 words
A diluted, non-corrosive disinfecting and sterilizing solution comprising the solution according to claim 6 diluted with ordinary, chloride-containing water to provide a concentration of peracetic acid of about 50 mg of peracetic acid per liter.
Claim 9
Dependent Claim
29 words
The concentrated solution according to claim 1 containing, by weight, approximately 2% peracetic acid, 6.1% acetic acid, 19.9% hydrogen peroxide, 8% nitric acid, 0.3% hydroxyethane-diphosphonic acid and 63.7% water.
Claim 10
Dependent Claim
30 words
The concentrated solution according to claim 1 wherein the concentration of said nitric acid is approximately 8% by weight up to 5 times the weight percentage of said peracetic acid.
Claim 11
Independent Claim
76 words
A method of preparing a disinfecting and sterilizing solution of a carboxylic peracid comprising introducing nitric acid into a 2-5% by weight commercial solution of peracetic acid, said nitric acid being added in such an amount that its weight percentage in the mixture corresponds to 3 to 5 times that of said peracetic acid; then mixing the resultant solution with ordinary water until a concentration of peracetic acid of between 30 and 300 mg/liter is obtained.
Claim 12
Independent Claim
76 words
A method of preparing a disinfecting and sterilizing solution of a carboxylic peracid comprising introducing nitric acid into a 2-5% by weight commercial solution of peracetic acid, said nitric acid being added in such an amount that its weight percentage in the mixture corresponds to 3 to 5 times that of said peracetic acid; then mixing the resultant solution with ordinary water until a concentration of peracetic acid of between 30 and 300 mg/liter is obtained.
Claim 13
Dependent Claim
29 words
A method of disinfecting and sterilizing an aseptic enclosure or a food industry apparatus or circuit, comprising applying thereto the non-corrosive disinfecting and sterilizing solution according to claim 9.
References Cited (Backward Citations)
FR2321302A1
Cited
US4051058A
Cited
US4051059A
Cited
JPS55133062A
Cited
EP0024219A1
Cited
US4297298A
Cited
GB2087724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |