Method and composition for inhibiting microbial adhesion on surfaces

• US 6,110,381 A
• Filed: 06/02/1997
• Issued: 08/29/2000
• Est. Priority Date: 04/19/1996
• Status: Expired due to Term

• Current Assignee: Solenis Technologies LP (Olympus Water Holdings IV LP)
• Original Assignee: BetzDearborn Inc. (Veolia Environnement SA)
• Inventors: Wright, J. Barry
• Primary Examiner(s): Lovering, Richard D.
• Assistant Examiner(s): Metzmaier, Daniel S.
• Application Number:
  US08/867,135
• Time in Patent Office: 1,184 Days
• Field of Search: 252/354, 424/405, 162/48, 162/161, 162/158, 210/764, 210/698, 516/200, 516/909, 106/2
• US Class Current: 210/698
• 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 2103/023 Water in cooling circuits
• CPC Class Codes: C02F 2103/28 from the paper or cellulose industry
• CPC Class Codes: C10M 135/10 Sulfonic acids or derivatives thereof
• CPC Class Codes: C10M 145/34 of two or more specified different types
• CPC Class Codes: C10M 173/00 Lubricating compositions containing more than 10% water
• CPC Class Codes: C10M 2201/02 Water
• CPC Class Codes: C10M 2209/107 of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
• CPC Class Codes: C10M 2219/044 Sulfonic acids, Derivatives thereof, e.g. neutral salts
• CPC Class Codes: C10N 2020/01 Physico-chemical properties
• CPC Class Codes: C10N 2040/20 Metal working
• CPC Class Codes: D21H 21/04 Slime-control agents

Abstract

A treatment for inhibiting the microbial adhesion on surfaces in contact with an aqueous system is disclosed, which comprises adding to the system the combination of a dioctylsulfosuccinate surfactant and a polyoxyethylene-polyoxypropylene block copolymer.

Claims

1. A method for inhibiting the microbial colonization of surfaces in contact with an aqueous system which comprises adding to said system from about 1-150 ppm of a combination of (a) a dioctylsulfosuccinate surfactant and (b) a polyoxyethylene-polyoxypropylene block copolymer surfactant to substantially prevent the adhesion of microbes to said surfaces while preserving the viability of the microbes in said system, allowing for the discharge of the microbes from said system, said polyoxyethylene-polyoxypropylene block copolymer surfactant exhibiting no colonization inhibition at concentrations less than 100 mg/l when used alone.

2. The method as recited in claim 1 wherein said dioctyl-sulfosuccinate surfactant is a linear dioctylsulfosuccinate.

3. The method as recited in claim 1 wherein said surfaces are stainless steel.

4. The method as recited in claim 1 wherein the weight ratio of (a):

(b) is from about 4;

1 to 1;

10.

5. The method of claim 1 wherein said polyoxyethylene-polyoxypropylene block copolymer surfactant exhibits no colonization inhibition at concentrations less than 200 mg/l when used alone.

6. The method as recited in claim 1 wherein said aqueous system comprises a cooling water system.

7. The method as recited in claim 1 wherein said surfaces are acrylic, ceramic or metal.

8. The method as recited in claim 1 wherein said aqueous system comprises a pulping or papermaking system.

9. The method as recited in claim 1 wherein said aqueous system comprises a metal working system.

10. The method as recited in claim 1 wherein said aqueous system comprises an oil and gas system.