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US3940482A
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Solubilization of the zinc salt of 1-hydroxy-2-pyridinethione
Assignee: Colgate Palmolive Co
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Filing: 1973-08-17
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Granted: 1976-02-24
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Expires: 1993-08-17
Abstract
Abstract This invention relates to improved methods of solubilizing heavy metal salts of 1-hydroxy-2(1H)- pyridinethione. More particularly, the invention relates to solubilizing heavy metal salts of 1-hydroxy-2(1H) pyridinethione with polyamines and to compositions containing the solubilized salts.
Inventors
- 👤 Paul Sheldon Grand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:24
CPC Classifications
D; D06; D06M; D06M16/00; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/49; A61K8/4906; A61K8/4933; A61Q; A61Q17/00; A61Q17/005; A61Q19/00; A61Q5/00; A61Q5/02; C; C11; C11D; C11D3/00; C11D3/48; D06M13/00; D06M13/244; D06M13/248; A61Q5/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A clear liquid composition for use as a bactericide or fungicide consisting essentially of 1/4 to 20% by weight of the zinc salt of 1-hydroxy-2-pyridinethione, an aliphatic polyamine having the general formula H.sub.2 N[CH.sub.2 CH.sub.2 NH].sub.n H wherein n represents a number from 1 to 5, the weight ratio of said amine to said pyridinethione salt being from about 1/2 to 1 to about 5 to 1, and the balance being a solvent selected from the group consisting of water, C 2 -C 3 monohydric alcohols, C 2 -C 3 polyhydric alcohols, dimethyl formamide, dimethylacetamide, dimethylsulfoxide and mixtures thereof.
Claim 2
Dependent Claim
99 words
A clear liquid composition for use as a bactericide or fungicide consisting essentially of 1/4 to 20% by weight of the zinc salt of 1-hydroxy-2-pyridinethione, an aliphatic polyamine having the general formula H.sub.2 N[CH.sub.2 CH.sub.2 NH].sub.n H wherein n represents a number from 1 to 5, the weight ratio of said amine to said pyridinethione salt being from about 1/2 to 1 to about 5 to 1, and the balance being a solvent selected from the group consisting of water, C 2 -C 3 monohydric alcohols, C 2 -C 3 polyhydric alcohols, dimethyl formamide, dimethylacetamide, dimethylsulfoxide and mixtures thereof.
Claim 3
Dependent Claim
27 words
A clear liquid composition in accordance with claim 1 wherein said solvent is a mixture of water and a C 2 -C 3 monohydric or polyhydric alcohol.
Claim 4
Dependent Claim
14 words
A clear liquid composition in accordance with claim 1 wherein said solvent is ethanol.
Claim 5
Dependent Claim
35 words
A clear liquid composition in accordance with claim 1 wherein said polyamine is diethylene triamine and the ratio of said polyamine to said pyridinethione salt is about 1 to 1 to about 2 to 1.
Claim 6
Independent Claim
133 words
A method of solubilizing the zinc salt of 1-hydroxy-2-pyridinethione for use as a bactericide or fungicide in a solvent selected from the group consisting of water, C 2 -C 3 monohydric alcohols, C 2 -C 3 polyhydric alcohols, dimethyl formamide, dimethylacetamide, dimethylsulfoxide and mixtures thereof which consists essentially of the step of solubilizing said pyridinethione salt in said solvent by admixing with an aliphatic polyamine having the general formula H 2 N[CH 2 CH 2 NH] n H wherein n represents a number from 1 to 5, said pyridinethione salt being 1/4 to 20% by weight of the resulting solution and the weight ratio of said aliphatic polyamine to said pyridinethione salt being from about 1/2 to 1 to about 5 to 1 and sufficient to improve the solubility of said pyridinethione salt.
Claim 7
Independent Claim
133 words
A method of solubilizing the zinc salt of 1-hydroxy-2-pyridinethione for use as a bactericide or fungicide in a solvent selected from the group consisting of water, C 2 -C 3 monohydric alcohols, C 2 -C 3 polyhydric alcohols, dimethyl formamide, dimethylacetamide, dimethylsulfoxide and mixtures thereof which consists essentially of the step of solubilizing said pyridinethione salt in said solvent by admixing with an aliphatic polyamine having the general formula H 2 N[CH 2 CH 2 NH] n H wherein n represents a number from 1 to 5, said pyridinethione salt being 1/4 to 20% by weight of the resulting solution and the weight ratio of said aliphatic polyamine to said pyridinethione salt being from about 1/2 to 1 to about 5 to 1 and sufficient to improve the solubility of said pyridinethione salt.
Claim 8
Dependent Claim
25 words
A method in accordance with claim 5 wherein said solvent is a mixture of water and a C 2 -C 3 monohydric or polyhydric alcohol.
Claim 9
Dependent Claim
21 words
A method in accordance with claim 5 wherein said solvent includes water and the pH of said solution is about 9.
Claim 10
Dependent Claim
12 words
A method in accordance with claim 5 wherein said solvent is ethanol.
Claim 11
Dependent Claim
14 words
A method in accordance with claim 5 wherein said aliphatic polyamine is diethylene triamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |