Treatment for sanitizing aqueous solutions

• US 5,258,409 A
• Filed: 02/24/1992
• Issued: 11/02/1993
• Est. Priority Date: 02/24/1992
• Status: Expired due to Fees

• Current Assignee: OLIN Corporation
• Original Assignee: OLIN Corporation
• Inventors: Gay, Walter A.
• Primary Examiner(s): Hollrah, Glennon H.
• Assistant Examiner(s): O SULLIVAN, PETER G
• Application Number:
  US07/840,411
• Time in Patent Office: 617 Days
• Field of Search: 71/67, 514/642, 564/291, 504/158
• US Class Current: 514/642
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 33/12 Quaternary ammonium compounds
• CPC Class Codes: A01N 59/20 Copper
• CPC Class Codes: C02F 1/50 by addition or application of a germicide or by oligodynamic treatment C02F1/4606, C02F1/467, C02F1/76 take precedence
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 2103/42 from bathing facilities, e.g. swimming pools
• CPC Class Codes: C07C 211/63 having quaternised nitrogen atoms bound to acyclic carbon atoms

Abstract

A sanitizing composition for aqueous solutions comprising an dialiphatic dimethylammonium salt having an effective bactericidal activity at a concentration below about 50 ppm by weight in the medium to be sanitized during a maximum contact time not exceeding 60 seconds.

Claims

1. A process for sanitizing water in swimming pools, hot tubs, and spas whereby the bacteria count in said water is rapidly lowered comprising:

treating said water with a quaternary ammonium salt selected from the group consisting of (hydrogenated tallow) 2-ethylhexyl dimethyl ammonium chloride, (hydrogenated tallow) 2-ethylhexyl dimethyl ammonium methosulfate, and dicoco dimethyl ammonium chloride, the concentration of said quaternary ammonium chloride, the concentration of said quaternary ammonium salt being less than 50 ppm by weight of said water and sufficient to result in effective bactericidial activity in said water for contact time of not in excess of 60 seconds.

2. The process of claim 1 wherein said contact time is not in excess of 30 seconds.

3. The process of claim 1 wherein said concentration of quaternary ammonium salt is from about 5 to about 25 ppm by weight of said water.

4. The process of claim 1 wherein said quaternary ammonium salt is (hydrogenated tallow) 2-ethylhexyl dimethyl ammonium chloride.

5. The process of claim 1 wherein said quaternary ammonium salt is (hydrogenated tallow) 2-ethylhexyl dimethyl ammonium methosulfate.

6. The process of claim 1 wherein said quaternary ammonium salt is dicoco dimethylammonium chloride.