US5437868A
Expired / Lapsed
US
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Peroxyacid antimicrobial composition
Assignee: Ecolab USA Inc
•
Filing: 1993-04-12
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Granted: 1995-08-01
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Expires: 2013-04-12
Abstract
Abstract A peroxyacid antimicrobial concentrate and use composition is provided comprising a C5 peroxyacid in combination with a C1-C4 peroxyacid, a C6-C18 peroxyacid, or mixtures thereof. The combination of these peracids produces a synergistic effect, providing a much more potent biocide than can be obtained by using these components separately. Other components can be added to the composition such as hydrotrope coupling agents, stabilizers, etc. An effective antimicrobial use solution is formed at low concentrations when the concentrate composition is diluted with water. Sanitizing of substantially fixed, "in-place" processing lines in dairies, breweries, and other food processing operations is one utility of the composition.
Inventors
- 👤 Thomas R. Oakes
- 👤 Thomas G. Boufford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:19
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/16; C; C11; C11D; C11D3/00; C11D3/39; C11D3/3945; C11D3/48
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
61 words
An aqueous peroxyacid antimicrobial composition consisting essentially of: (a) at least about 10 parts per million (ppm) of peroxyglutaric acid; and (b) at least about 1 ppm of a peroxyacid selected from the group consisting of a C 6 -C 18 aliphatic peroxyacid, and mixtures thereof; wherein the aqueous composition has a pH in the range of about 2 to 8.
Claim 2
Dependent Claim
61 words
An aqueous peroxyacid antimicrobial composition consisting essentially of: (a) at least about 10 parts per million (ppm) of peroxyglutaric acid; and (b) at least about 1 ppm of a peroxyacid selected from the group consisting of a C 6 -C 18 aliphatic peroxyacid, and mixtures thereof; wherein the aqueous composition has a pH in the range of about 2 to 8.
Claim 3
Dependent Claim
25 words
The aqueous composition of claim 1 wherein said C 6 -C 18 peroxyacid is an aliphatic peroxyfatty acid, or an aliphatic monoperoxy- or diperoxydicarboxylic acid.
Claim 4
Dependent Claim
35 words
The aqueous composition of claim 1 wherein said C 6 C 18 peroxyacid is selected from the group consisting of peroxyoctanoic acid, peroxydecanoic acid, monoperoxy- or diperoxyadipic acid, monoperoxy- or diperoxysebacic acid, and mixtures thereof
Claim 5
Dependent Claim
18 words
The aqueous composition of claim 1 further containing at least about 1 ppm of a hydrotrope coupling agent.
Claim 6
Dependent Claim
25 words
The aqueous composition of claim 1 wherein the weight ratio of said C 5 peroxyacid to said peroxyacid of (b) is about 20:1 to 1:10.
Claim 7
Dependent Claim
36 words
The aqueous composition of claim 1 further containing at least about 10 ppm of a carboxylic acid selected from the group consisting of glutaric acid, a C 6 -C 18 aliphatic carboxylic acid, and mixtures thereof.
Claim 8
Dependent Claim
32 words
The aqueous composition of claim 6 wherein said C 6 -C 18 carboxylic acid is selected from the group consisting of octanoic acid, decanoic acid, adipic acid, sebacic acid, and mixtures thereof.
Claim 9
Dependent Claim
16 words
The aqueous composition of claim 1 further comprising at least about 1 ppm of hydrogen peroxide.
Claim 10
Dependent Claim
89 words
An aqueous peroxyacid antimicrobial sanitizing composition consisting essentially of: (a) about 10 to 75 parts per million (ppm) of peroxyglutaric acid; (b) about 1 to 25 ppm of a peroxyacid of the structure R 1 --CO 3 H wherein R 1 is an aliphatic hydrocarbon chain having about 5 to 17 carbon atoms; (c) about 1 to 200 ppm of a hydrotrope coupling agent; and (d) about 2 to 200 ppm of hydrogen peroxide; wherein the aqueous composition has a pH in the range of about 3 to 7.
Claim 11
Dependent Claim
89 words
An aqueous peroxyacid antimicrobial sanitizing composition consisting essentially of: (a) about 10 to 75 parts per million (ppm) of peroxyglutaric acid; (b) about 1 to 25 ppm of a peroxyacid of the structure R 1 --CO 3 H wherein R 1 is an aliphatic hydrocarbon chain having about 5 to 17 carbon atoms; (c) about 1 to 200 ppm of a hydrotrope coupling agent; and (d) about 2 to 200 ppm of hydrogen peroxide; wherein the aqueous composition has a pH in the range of about 3 to 7.
Claim 12
Dependent Claim
24 words
The concentrate composition of claim 7 wherein said peroxyacid of (b) is a peroxyfatty acid having about 8 to 12 carbon atoms per molecule.
Claim 13
Dependent Claim
18 words
The aqueous composition of claim 10 wherein said peroxyfatty acid is peroxyoctanoic acid, peroxydecanoic acid, or mixtures thereof.
Claim 14
Dependent Claim
11 words
The aqueous composition of claim 9 wherein said hydrotrope is n-octanesulfonate.
Claim 15
Dependent Claim
31 words
The aqueous composition of claim 10 further containing about 10 to 800 ppm of a carboxylic acid selected from the group consisting of a fatty acid, glutaric acid, and mixtures thereof.
Claim 16
Dependent Claim
18 words
The aqueous composition of claim 3 wherein said fatty acid is octanoic acid, decanoic acid, or mixtures thereof.
Claim 17
Dependent Claim
15 words
The composition of claim 1 further containing a chelating agent for binding polyvalent metal cations.
Claim 18
Dependent Claim
12 words
The composition of claim 15 wherein said chelating agent is 1-hydroxyethylidene-1,1-diphosphonic acid.
Claim 19
Dependent Claim
15 words
The composition of claim 9 further containing a chelating agent for binding polyvalent metal cations.
Claim 20
Dependent Claim
12 words
The composition of claim 17 wherein said chelating agent is 1-hydroxyethylidene-1,1-diphosphonic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |