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Patent US4179522A successfully refreshed from Google Patents.
US4179522A
Expired / Lapsed
US
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Certain complex salts of mono carboxylic acids used as preservatives
Assignee: BP Chemicals Ltd
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Filing: 1976-10-26
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Granted: 1979-12-18
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Expires: 1996-10-26
Abstract
Abstract This invention relates to a liquid composition comprising a C 3 -C 8 carboxylic acid, an ion selected from NH 4 + and a Group I or Group II metal according to the Periodic Table due to Mendeleef, and water, the ratio of acid to cation is between 2.1 and 4:1 on a chemical equivalent basis.
Inventors
- 👤 John J. Huitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:28
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/305; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23K; A23K30/00; A23K30/10; A23K30/15; A61; A61L; A61L11/00; A61L9/00; A61L9/01; A61P; A61P31/00; A61P31/04; C; C02; C02F; C02F1/00; C02F1/50; C02F5/00; C02F5/08; C02F5/10; C07; C07C; C07C53/00; C07C53/02; C07C53/06; C07C53/08; C07C53/10; C07C53/122; C07C53/124; C07C53/126; C07C57/00; C07C57/02; C07C57/03; C07C57/04; C07C59/00; C07C59/185; C09; C09K; C09K5/00; C09K5/20; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A process for preserving substrates against degradation by microorganisms comprising applying to the said substrate a preservative effective amount of a liquid composition comprising in aqueous solution a complex salt of a cation of ammonium, sodium, potassium, calcium or magnesium and at least one monocarboxylic acid selected from the group consisting of propionic acid, isobutyric acid, and butyric acid, the ratio of acid to cation in the complex salt being in the range of 2:1 and 4:1 on a chemical equivalent basis and the concentration of water in the aqueous solution being between 15% and 75% by weight of the total composition.
Claim 2
Dependent Claim
102 words
A process for preserving substrates against degradation by microorganisms comprising applying to the said substrate a preservative effective amount of a liquid composition comprising in aqueous solution a complex salt of a cation of ammonium, sodium, potassium, calcium or magnesium and at least one monocarboxylic acid selected from the group consisting of propionic acid, isobutyric acid, and butyric acid, the ratio of acid to cation in the complex salt being in the range of 2:1 and 4:1 on a chemical equivalent basis and the concentration of water in the aqueous solution being between 15% and 75% by weight of the total composition.
Claim 3
Dependent Claim
27 words
A process according to claim 1 wherein 0.1 to 5% of the liquid composition based on the weight of the substrate is used to treat the substrate.
Claim 4
Dependent Claim
31 words
A process as defined in claim 1 wherein said cation is ammonium or sodium and the ratio of acid to cation in the complex salt is in the range of 2:1.
Claim 5
Dependent Claim
12 words
A process as defined in claim 3 wherein said cation is ammonium.
Claim 6
Dependent Claim
11 words
A process according to claim 3 wherein said cation is sodium.
Claim 7
Dependent Claim
26 words
A process as defined in claim 1 wherein said concentration of the complex in the aqueous solution is about 70% by weight of the total composition.
Claim 8
Dependent Claim
26 words
A process as defined in claim 4 wherein said concentration of the complex in the aqueous solution is about 70% by weight of the total composition.
Claim 9
Dependent Claim
11 words
A process according to claim 1 wherein said cation is ammonium.
Claim 10
Dependent Claim
11 words
A process according to claim 1 wherein said cation is sodium.
References Cited (Backward Citations)
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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) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |