US3716351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Algaecide composition having improved stability
Assignee: APPLIED BIOCHEMISTS Inc A WI CORP
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Filing: 1970-04-28
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Granted: 1973-02-13
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Expires: 1990-04-28
Abstract
Abstract An algaecide composition having improved stability comprising an aqueous solution containing a complex which is a reaction product of either a copper salt or a cobalt salt with an alkanolamine. The solution also contains an effective amount of an acetylenic diol and an alkali metal halogenate, such as sodium chlorate, which aid in preventing the complex from decomposing during extended periods of storage.
Inventors
- 👤 D Seymour
- 👤 D Kunkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; C02F1/505
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
An algaecide composition having improved stability, consisting essentially of an aqueous solution containing an effective amount of a complex produced by reacting a water soluble metal salt selected from the group of copper salts and cobalt salts with an alkanolamine having at least one alkanol group containing from one to ten carbon atoms, said solution also having dissolved therein an acetylenic diol and an alkali metal halogenate to provide increased stability for the complex and prevent decomposition of the same and precipitation of metal salts, said acetylenic diol having the following structure: Ho CH2(-C * C-)n CH2OH where n is an integer of 1 or 2, said acetylenic diol being present in a weight concentration of 0.001:1 to 10:1 with respect to the complex, and said alkali metal halogenate being present in a weight concentration of 0.001:1 to 10:1 with respect to the complex.
Claim 2
Dependent Claim
144 words
An algaecide composition having improved stability, consisting essentially of an aqueous solution containing an effective amount of a complex produced by reacting a water soluble metal salt selected from the group of copper salts and cobalt salts with an alkanolamine having at least one alkanol group containing from one to ten carbon atoms, said solution also having dissolved therein an acetylenic diol and an alkali metal halogenate to provide increased stability for the complex and prevent decomposition of the same and precipitation of metal salts, said acetylenic diol having the following structure: Ho CH2(-C * C-)n CH2OH where n is an integer of 1 or 2, said acetylenic diol being present in a weight concentration of 0.001:1 to 10:1 with respect to the complex, and said alkali metal halogenate being present in a weight concentration of 0.001:1 to 10:1 with respect to the complex.
Claim 3
Dependent Claim
12 words
The composition of claim 1, wherein said acetylenic diol is 2-butyne-1,4 diol.
Claim 4
Dependent Claim
13 words
The composition of claim 1, wherein said alkali metal halogenate is sodium chlorate.
Claim 5
Dependent Claim
26 words
The composition of claim 1, wherein said alkanolamine is used in a weight ratio of 1 to 2 parts per one part of the metal salt.
Claim 6
Dependent Claim
39 words
The composition of claim 1, wherein the aqueous solution has a pH in the range of 7.4 to 8.0 when utilizing the copper complex and a pH in the range of 9.5 to 10.5 when utilizing the cobalt complex.
Claim 7
Independent Claim
129 words
A method of improving the stability of an aqueous algaecide composition containing an effective amount of a complex produced by reacting a water-soluble metal salt selected from the group consisting of copper salts and cobalt salts with an alkanolamine having at least one alkanol group containing from 1 to 10 carbon atoms, said method comprising the step of incorporating with said algae-cide composition an acetylenic diol and an alkali metal halogenate, said acetylenic diol having the following structure: HO CH2 (-C * C-)n CH2OH where n is an integer of 1 or 2, said acetylenic diol being employed in a weight concentration of 0.001:1 to 10:1 with respect to the complex and said halogenate being employed in the weight concentration of 0.001:1 to 10:1 with respect to said complex.
Claim 8
Independent Claim
129 words
A method of improving the stability of an aqueous algaecide composition containing an effective amount of a complex produced by reacting a water-soluble metal salt selected from the group consisting of copper salts and cobalt salts with an alkanolamine having at least one alkanol group containing from 1 to 10 carbon atoms, said method comprising the step of incorporating with said algae-cide composition an acetylenic diol and an alkali metal halogenate, said acetylenic diol having the following structure: HO CH2 (-C * C-)n CH2OH where n is an integer of 1 or 2, said acetylenic diol being employed in a weight concentration of 0.001:1 to 10:1 with respect to the complex and said halogenate being employed in the weight concentration of 0.001:1 to 10:1 with respect to said complex.
Claim 9
Dependent Claim
14 words
The method of claim 6, wherein the complex is dissolved in an aqueous solution.
References Cited (Backward Citations)
US2734028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |