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| Inventor(s): |
Hamilton; Jock , Los Angeles, CA 90025
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| Applicant(s): |
none
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| Issued/Filed Dates: |
July 11, 1989 /
Aug. 12, 1987 R2 CC
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| Application Number: |
US1987000084454
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| IPC Class: |
C02F 1/50;
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| Class: |
Current: 210/754; 134/002; 134/026; 210/764; 210/765; 504/119; 504/150;
Original: 210/754; 210/764; 210/765; 071/067; 134/002; 134/026;
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| Field of
Search: |
210/697,752,754,764,765 071/067 134/2,3,26,28,29
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| Legal
Status: |
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| Abstract: |
There is disclosed a chemical algacide composition, and
method for its use, to prevent and remove yellow algae deposits in
swimming pools, spas and simlar bodies of water. The algacide
composition comprises from 5 to about 12.5 weight percent of a
soluble polyphosphate and the balance of an alkali metal or ammonium
bromide. The successful use of the algacide composition requires the
presence of an oxidizer which is effective to convert the bromide to
bromine. This conveniently can be the oxidizer which is used in the
water, e.g., chlorine or sodium hypochloride in swimming pools and
spas, or can be an additionally added oxidizer, such as a
persulfate, etc. The method comprises the addition of the algacide
composition to the water at a dosage sufficient to provide at least
0.5 ppm of the soluble bromide in the water, and to maintain an
active oxidizer in the water.
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| Attorney, Agent, or
Firm: |
Plante, Strauss, Vanderburg;
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| Primary/Assistant
Examiners: |
Wyse; Tom;
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| Related
Applications: |
| Application
Number |
ApplDate |
Patent |
Issued |
Title |
| US1985000772028 |
1985-09-03 |
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| First
Claim: |
Show all 6 claims
What is claimed is:
1.
The method of treating swimming pools and spas characterized by
yellow algae growths and stains to prevent said growth and remove
said stains which comprises:
- (a) adding to the water in said pool or spa, an effective
amount of an algicide composition consisting essentially of an
alkali metal, alkaline earth metal or ammonium bromide in an
amount from 1 ounce to 3 pounds per 10,000 gallons of water
- (b) adding to said water, a water soluble oxidizer having an
oxidation potential effective to convert bromide ions to bromine
in dilute aqueous solutions, while
- (c) controlling the addition of said algicide composition by
adding said algicide composition in limited, periodic amounts to
maintain said bromine concentration in the water at a level from
about 0.5 to about 100 ppm bromine.
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| Background/Summary: |
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| Drawing Descriptions: |
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| Description of Preferred
Embodiments: |
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embodiments
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| Foreign
References: |
none
(No patents reference this one)
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| Other
References:
Article info links by
_files/isi_logo.gif) : |
- Strauss, Chem. Abst, vol. 53 (1951), H866f.
- The March Index (1983), 9063, p. 1322.
- Bringmann et al., Chem Abst., vol. 89 (1978), 191911t.
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