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Synergistic biocidal mixtures

A mixture and biocide technology, applied in biocides, animal repellants, plant growth regulators, etc., can solve problems such as reduced service life, increased consumption, and increased corrosion rate

Inactive Publication Date: 2007-07-11
SOLENIS TECH CAYMAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, strong oxidizing agents such as sodium hypochlorite often cause more problems for machines than they overcome
In papermaking systems, the side effects of strong oxidizing agents can be, inter alia, increased corrosion rates, increased consumption of dyes and other valuable stock chemicals (e.g., polishes, dry and wet strength additives, and sizes), reduce

Method used

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  • Synergistic biocidal mixtures
  • Synergistic biocidal mixtures
  • Synergistic biocidal mixtures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This example illustrates the simultaneous feeding strategy of activated ammonium bromide (AmBr) and 2-bromo-2-nitrostyrene (BNS) on artificial bacterial consortia in synthetic white water at pH 5.5 and 8.0. antagonism between them.

[0076]

[0077] *BNS-2-bromo-2-nitrostyrene

Embodiment 2

[0079] This example demonstrates the effect of activated ammonium bromide (AmtBr) and 2-bromo- Synergy between 2-nitrostyrenes (BNS). By applying the biocide stepwise, negative interactions between the active ingredients are minimized and / or eliminated, resulting in increased biocidal action.

[0080]

[0081] *BNS-2-bromo-2-nitrostyrene

Embodiment 3

[0083] This example illustrates the simultaneous feeding strategy of activated ammonium bromide (AmBr) and 2-bromo-2-nitro-propan-1, Synergy between 3-diols (bronopol, BNPD).

[0084]

[0085] *BNPD-2-bromo-2-nitropropane-1,3-diol

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Abstract

Synergistic mixtures of biocides and their use to control the growth of microorganisms in aqueous systems are disclosed. The method of using the synergistic mixtures entails adding an effective amount of a nitrogenous compound activated by an oxidant and at least one non-oxidizing biocide to an aqueous system. The amount of activated nitrogenous compound and non-oxidizing biocide is selected to result in a synergistic biocidal effect.

Description

[0001] Related Application Cross Reference [0002] This application is related to, and claims priority from, US Provisional Patent Application Serial No. 60 / 405,235, filed August 22, 2002. field of invention [0003] The present invention relates to synergistic mixtures (or combinations) of biocides and their use for controlling the growth of microorganisms in aqueous systems, more particularly industrial process waters, most particularly pulp and paper processing systems. Background of the invention [0004] Uncontrolled growth of microorganisms can have serious consequences such as product degradation or damage, product contamination, and disruption of a wide range of important industrial processes. Microbial growth on surfaces exposed to water (eg: recirculation systems, heat exchangers, once-through heating and cooling systems, pulp and paper processing systems, etc.) is particularly problematic because indigenous microbial populations can form biofilms. Depending on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/50C02F1/76A01N59/00A01N33/08A01N33/06A01N33/04A01N33/12A01N47/28A01N47/44A01N33/00A01N47/00
CPCC02F1/50C02F2303/20A01N59/00C02F1/76C02F2103/023C02F2303/04A01N33/18A01N35/08A01N37/32A01N43/26A01N47/44A01N33/12A01N35/02A01N43/80A01N47/48A01N47/02A01N2300/00
Inventor 小约翰·M.·克罗南迈克尔·H.·迈耶
Owner SOLENIS TECH CAYMAN