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US 12,751,452 B2Granted
Method for treating technical products
AssigneeThor GmbH
InventorsRüdiger Baum, Thomas Wunder, Roman Grabbe
Life of this patent
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AssigneeThor GmbH
InventorsRüdiger Baum, Thomas Wunder, Roman Grabbe
Estimating the term…
The invention relates to a method for reducing microbial infestation of an aqueous technical product, comprising the steps: (a) providing an aqueous technical product, for example a dye, having a pH in the range of 7.0-9.5 and containing: i. 25-100 ppm 5-chloro-2-methyl-4-isothiazolone (CMIT) and ii. 50-1000 ppm of one or more zinc compound(s), selected from the group consisting of zinc oxide, zinc carbonate, zinc hydroxide and zinc hydroxycarbonate; (b) breaking down some of the CMIT by adding at least one pyrithione compound selected from sodium pyrithione, potassium pyrithione and calcium pyrithione, in a total amount in the range of 25-500 ppm so that the concentration of the CMIT in the technical product is in the range of 5-15 ppm; and (c) storing the technical product over a period of up to 9 months.
A method for reducing microbial contamination of an aqueous industrial product, comprising the steps of:
A method for partial degradation of 5-chloro-2-methyl-4-isothiazolinone, comprising the steps of:
A method of using at least one pyrithione compound selected from sodium pyrithione, potassium pyrithione and calcium pyrithione in an amount in the range from 25 ppm to 500 ppm for partial decomposition of 5-chloro-2-methyl-4-isothiazolinone in an industrial product containing:
Dependencies are inferred from the claim text.