Non-corrosive peroxy carboxylic acid-based sterilant...

A - Human Necessities – 61 – L

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A61L 2/18 (2006.01) A01N 37/16 (2006.01)

Patent

CA 2349318

A non-corrosive, liquid, aqueous sterilant composition (as a concentrate or ready-to-use solution), which may be provided in two parts which are mixed prior to application, may comprise a peracid (in an equilibrium solution with an underlying carboxylic acid or mixtures of alkyl carboxylic acids and peroxide), inorganic buffering agent, and water. It has been found that the use of this simplified system, even in the absence of additional components which have been thought to be desirable for sterilants used on metal parts (e.g., copper and brass corrosion inhibitors, chelating agents, anti-corrosive agents) display excellent performance and that these additional components are not necessary, and that the presence of these additional materials at least complicates disposal of the spent solutions and could complicate compatibility of the sterilant solutions with some polymeric materials, especially where organic materials are used as the additional components, which organic materials may interact with, dissolve or solubilize in the polymeric materials.

L'invention concerne une composition de stérilisation, aqueuse, liquide, non corrosive, (telle qu'un concentré ou une solution prête à l'emploi), pouvant être présentée en deux parties, mélangées avant une application. Ladite composition comprend un peracide (dans une solution d'équilibre avec un acide carboxylique ou des mélanges d'acides alkyles carboxyliques et de peroxyde), un agent de tamponnage inorganique, et de l'eau. On a découvert que l'utilisation de ce système simplifié, même en l'absence de composants supplémentaires qui avaient été jugés souhaitables dans des stérilisants utilisés sur des parties métalliques (par exemple, des inhibiteurs de corrosion de laiton et de cuivre, des agents de chélation, et des agents anti-corrosifs) possède une excellente performance, que les composants supplémentaires ne sont pas nécessaires, et que la présence de ces matériaux supplémentaires complique au moins l'élimination des solutions utilisées et pourrait perturber la compatibilité des solutions de stérilisation avec certains matériaux polymères, en particulier des matériaux organiques utilisés comme composants supplémentaires, lesquels matériaux organiques peuvent interagir avec les matériaux polymères, se dissoudre ou se solubiliser dans ceux-ci.

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