Synergistic compositions for the control of aerobacter aerogenes

• US 3,873,711 A
• Filed: 04/04/1974
• Issued: 03/25/1975
• Est. Priority Date: 07/06/1971
• Status: Expired due to Term

• Current Assignee: Bernard F. Shema, Paul Swered, Robert H. Brink Jr, Roger L. Justice
• Original Assignee: Bernard F. Shema, Paul Swered, Robert H. Brink Jr, Roger L. Justice
• Inventors: Brink, Robert H. Jr., Shema, Bernard F., Justice, Roger L., Swered, Paul
• Primary Examiner(s): Thomas, Jr., James O.
• Application Number:
  US05/457,744
• Time in Patent Office: 355 Days
• Field of Search: 71/67 424/347,277,346
• US Class Current: 514/441
• 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 43/26 five-membered rings
• 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

Abstract

The present invention relates to certain processes and compositions useful for inhibiting and/or controlling the growth of slime in water and, in particular, water employed for industrial purposes. Water employed in the manufacture of pulp paper and water employed in cooling water systems, as well as other industrial waters, provide environments which are conducive to slime formation. The novel compositions of the present invention are mixtures which show unexpected synergistic activity against microorganisms, including bacteria, fungi and algae, which produce slime in aqueous systems. The slime, of course, is objectionable from an operational and/or an aesthetic point of view. Specifically, the invention is directed to and the use of compositions comprising a combination of 5-chloro-4-phenyl-1,2dithiole-3-one and phenolic compounds (or mixtures thereof). The inventive compositions inhibit the growth of slime in water, or more specifically, possess biocidal activity against bacteria, fungi and/or algae. The phenolic compounds contemplated for use in accordance with the present invention are those phenolic compounds which possess the capacity to kill or inhibit the growth of slime-forming microorganisms such as bacteria, fungi and algae. The type phenolic compounds encompassed by the present invention may be exemplified by: phenol, ortho-phenylphenol, 2, 3, 4, 6-tetrachlorophenol, 4-chloro-2-cyclopentylphenol and 2chloro-4-phenylphenol.

Claims

1. A METHOD FOR CONTROLLING THE GROWTH OF THE MICROORGANISM AREOBACTER AEROGENES IN AN AQUEOUS STSTEM IN WHICH SAID MICROORGANIXM IS FOUND WHICH COMPRISES ADDING TO SAID SYSTEM SO AS TO CONTACT SAID MICROORGANISM AN EFFECTIVE AMOUNT OF A COMBINATION COMPRISING 5-CHLORO-4-PHENYL-1,2-DITHIOLE3-ONE AND 2,3,4,6-TETRACHLOROPHENOL, WHEREIN THE WEIGHT RATIO OF THE DITHIOLE TO THE TETRACHLOROPHENOL IS FROM 60 TO 5% AND 40 TO 95%.

2. The method of claim 1 where said combination is added to said system in an amount of from 0.5 to about 1,000 parts by weight of said combination per million parts by weight of said aqueous system.

3. A composition which is effective in controlling the growth of the microorgamism Aerobacter aerogenes in aqueous system where said microorgansim is found which comprises 5-chloro-4-phenyl-1, 2-dithiole-3-one and 2,3,4,6-tetrachlorophenol wherein the weight ratio of the dithiole to the tetrachlorophenol is from 60 to 5% to 40 to 95%.