Biocide Compositions Comprising Quaternary Ammonium and Urea and Methods for Their Use

a technology of quaternary ammonium and urea, applied in the field of biocide compositions, can solve the problems of contamination, obstacles to treating contamination, and significant problems in a variety of products and processes, and achieve the effect of preventing biological contamination and treating and/or preventing biological contamination

Inactive Publication Date: 2009-12-17
UNITED PROMOTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]The present application thus provides improved methods for preparing biocide compositions and improved methods for treating and / or preventing biological contamination using a biocide composition comprising at least one quaternary ammonium compound and urea. In accordance with an embodiment of this invention, it has now been discovered that drying urea, and thereafter combining at least one quaternary ammonium compound and urea may produce a potent biocide composition that is stable at high temperature and able to chemically treat biological contamination in a variety of difficult to reach locations. As used herein, stable means the biocide remains effective as a biocide with substantially the same potency as when first made and the biocide components do not substantially separate from one another.

Problems solved by technology

Biological contamination by pathogens such as bacteria, fungus, algae and viruses may cause significant problems in a variety of products and processes.
Unfortunately, the locations and conditions in which biological contamination occurs may create obstacles to treating the contamination.
For example, contamination may occur (1) at temperatures at which traditional biocides are unstable; (2) in locations such as crevices, pockets, and pores that are too difficult to reach with traditional biocides; (3) in products such as a food that are not permitted to come in direct contact with traditional biocides; and (4) in the presence of organic matter that may destroy or breakdown the effectiveness of traditional biocides.

Method used

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  • Biocide Compositions Comprising Quaternary Ammonium and Urea and Methods for Their Use

Examples

Experimental program
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Effect test

example 1

Making the Biocide Composition

[0112]A biocide composition is prepared using a batch process. 400 lbs of alkyl dimethyl benzyl ammonium chlorides in which 60% of the alkyl chains are C14H29, 30% of the alkyl chains are C16H33, 5% of the alkyl chains are C12H25, and 5% of the alkyl chains are C18H37 is combined with 100 lbs of ethylene glycol to create a quat mixture. The quat mixture is gradually heated to a temperature of about 50° C. until substantially all water is evaporated from the quat. Separately, 600 lbs of pharmaceutical grade urea is heated to about 100° C. until substantially all water is evaporated from the urea. The heated quat mixture is then sprayed over heated urea and mixed with the urea to form a quat / urea biocide mixture with a paste-like consistency. The quat / urea biocide mixture is dried to remove the solvent and create a biocide composition, and the biocide composition is forced through a screen to granulate the biocide. The quat / urea biocide is then packaged i...

example 2

Treatment of Chicken Carcasses with Biocide Composition

[0113]A quat / urea biocide composition prepared using the process described in Example 1 was mixed with water to prepare 9,954 liters of aqueous solution with 200 ppm quat / urea biocide. The quat / urea biocide solution was heated to about 60° C. and placed in a scalding tank, and 2000 chicken carcasses were treated in the tank over a 20 minute period, each carcass having a residence time of about 3 minutes in the tank. The process was then repeated with no biocide in the scalding tank.

[0114]After chilling and processing, the chicken carcasses that had been scalded in the tank containing the biocide tested negative for E. Coli and were found to have an average level of fecal coliforms of about 120 nmp / g. The chicken carcasses that had been scalded in the tank without biocide tested positive for E. Coli and were found to have an average level of fecal coliforms of about 944 nmp / g.

[0115]Samples of the chicken were then packaged and pl...

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Abstract

Composition and method for treating and/or preventing biological contamination using a biocide composition comprising at least one quaternary ammonium compound and urea. The method includes drying urea, and thereafter combining at least one quaternary ammonium compound and urea and may produce a potent biocide composition that is stable and able to chemically treat biological contamination in a variety of difficult to reach locations. Uses of the composition are also described.

Description

CROSS RELATED APPLICATION[0001]The present application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61 / 061,266, filed on Jun. 13, 2008, the disclosure of which is hereby incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present application relates generally to biocide compositions, and more particularly relates to biocide compositions including quaternary ammonium and urea.BACKGROUND OF THE INVENTION[0003]Biological contamination by pathogens such as bacteria, fungus, algae and viruses may cause significant problems in a variety of products and processes. Unfortunately, the locations and conditions in which biological contamination occurs may create obstacles to treating the contamination. For example, contamination may occur (1) at temperatures at which traditional biocides are unstable; (2) in locations such as crevices, pockets, and pores that are too difficult to reach with traditional biocides; (3) in products such as a food ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N47/28
CPCA01N33/12C09K8/035A01N47/28A01N25/12A01N25/22A01N2300/00
Inventor FIGUEREDO, FERNANDO
Owner UNITED PROMOTIONS
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