Isothiazolinone biocides enhanced by zinc ions

Details Isothiazolinone biocides enhanced by zinc ions Isothiazolinone biocides enhanced by zinc ions

A - Human Necessities

01

N

A01N 43/80 (2006.01) A01N 25/10 (2006.01) A01N 43/40 (2006.01) A01P 1/00 (2006.01) C09D 5/14 (2006.01)

Patent

CA 2653212

The present invention relates to an antimicrobial composition comprising an isothiazolinone, such as l,2-benzisothiazolin-3-one, and a zinc compound selected from zinc salts, zinc oxides, zinc hydroxides or combinations thereof. Useful zinc salts include for example, oxides, sulfates, chlorides, and combinations thereof. In use, the zinc from the zinc compound enhances the antimicrobial activity to the isothiazolin-containing composition. This enhancement permits achieving the desired antimicrobial activity at a lower usage rate than is achieved using the isothiazolinone in the absence of the zinc compound. The antimicrobial composition can also contain co-biocides, such as pyrithiones, including zinc pyrithione or copper pyrithione.

La présente invention concerne une composition antimicrobienne comprenant une isothiazolinone, telle qu'une l,2-benzisothiazolin-3-one, ainsi qu'un composé de zinc sélectionné parmi des sels de zinc, des oxydes de zinc, des hydroxydes de zinc ou des combinaisons de ces derniers. Parmi les sels de zinc utiles, on trouve, par exemple, des oxydes, des sulfates, des chlorures et des combinaisons de ces derniers. Lors de l'utilisation, le zinc du composé de zinc améliore l'activité antimicrobienne de la composition contenant de l'isothiazoline. Ladite amélioration permet d'obtenir l'activité antimicrobienne souhaitée à un taux d'utilisation inférieur à celui obtenu à l'aide de l'isothiazolinone en l'absence du composé de zinc. La composition antimicrobienne peut également contenir des co-biocides, tel que des pyrithiones, notamment du pyrithione de zinc ou du pyrithione de cuivre.

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