US4286983A
Expired / Lapsed
US
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Algicidal composition and method of preventing or controlling algae with said composition
Assignee: Duphar International Research BV
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Filing: 1979-07-20
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Granted: 1981-09-01
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Expires: 1999-07-20
Abstract
Abstract Algicidal composition comprising in an algicidally effective amount a diamine of the formula ##STR1## wherein R 1 is hydrogen or up to three substituents such as halogen, alkyl, phenoxy, phenylthio, or halogen substituted alkoxy, R 2 is hydrogen or a substituent such as alkyl, phenyl, halogen substituted phenyl or a trifluoromethyl-substituted phenyl group, R 3 is an alkylene of 2 to 6 carbon atoms, R 4 is hydrogen or alkyl of 1 to 4 carbon atoms, R 5 is alkyl of 1 to 6 carbon atoms or R 4 and R 5 are together tetramethylene or pentamethylene or R 2 and R 5 are together ethylene and where R 1 is other than three halogen atoms.
Inventors
- 👤 Jaap Van Gilse
- 👤 Gerard B. Paerels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:25
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/08; A01N33/10; A01N33/06; A01N41/00; A01N41/02; A01N41/10; A01N47/00; A01N47/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
An algicidal composition comprising an algically effective amount of a compound of the formula ##STR2## wherein R 2 ' is H, methyl, or phenyl, R 3 ' is ethylene, trimethylene, or 2-methyl-ethylene, R 6 and R 8 are identical or different and are H, Cl, or methyl, R 7 is Cl or methyl, with the provisos that (a) if R 6 and R 8 are both H, R 7 is in addition trifluoromethyl, n-C 2 -C 10 -alkyl, or cyclohexyl, (b) not all R 6 , R 7 , and R 8 are Cl, and (c) if R 6 and R 8 are H and R 7 is Cl, R 3 ' is ethylene, or a salt thereof and a solid or liquid inert material.
Claim 2
Dependent Claim
125 words
An algicidal composition comprising an algically effective amount of a compound of the formula ##STR2## wherein R 2 ' is H, methyl, or phenyl, R 3 ' is ethylene, trimethylene, or 2-methyl-ethylene, R 6 and R 8 are identical or different and are H, Cl, or methyl, R 7 is Cl or methyl, with the provisos that (a) if R 6 and R 8 are both H, R 7 is in addition trifluoromethyl, n-C 2 -C 10 -alkyl, or cyclohexyl, (b) not all R 6 , R 7 , and R 8 are Cl, and (c) if R 6 and R 8 are H and R 7 is Cl, R 3 ' is ethylene, or a salt thereof and a solid or liquid inert material.
Claim 3
Dependent Claim
22 words
The algicidal composition of claim 1 wherein said compound has the formula ##STR3## wherein R 7 ' is cyclohexyl, trifluoromethyl, or n-butyl.
Claim 4
Dependent Claim
29 words
A composition as claimed in claim 1, characterized in that the active constituent is a compound selected from the group consisting of N-(3,4-dichlorophenyl)-N',N'-diethyltrimethylene diamine, N-(4-trifluoromethylphenyl)-N',N'-diethyltrimethylene diamine and N-(2,4,5-trimethylphenyl)-N',N'-diethyl-ethylene diamine.
Claim 5
Dependent Claim
29 words
A method of preventing or controlling the growth of algae comprising treating the aqueous locus of said algae with a algicidally effective amount of the composition of claim 1.
Claim 6
Dependent Claim
29 words
The method of claim 4 wherein the algicidal composition is employed in a dosage corresponding to 0.12 to 10 kilograms of the active substance per hectare of surface water.
Claim 7
Dependent Claim
28 words
The method of claim 4 wherein the algicidal composition is employed in a dosage corresponding to 0.05 to 10 milligrams of the active substance per liter of water.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |