Washing or cleaning agents with electrochemically activatable anionic mediator compounds
AssigneeHenkel AG & Co. KGaA
InventorsIwona Spill, Mareile Job, Peter Schmiedel, Thomas Gerke, Guido Grundmeier, Markus Voigt
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Abstract
The aim of the invention is to improve the cleaning power of washing and cleaning agents, especially with regard to bleachable stains, while avoiding any damage to the textile treated with said washing and cleaning agents. This is substantially achieved by using an electrolytically bleachable species generated by a redox reaction from an anionically substituted 1-hydroxy-2,2,6,6-tetramethylpiperidine, 2,2,6,6-tetramethylpiperidine-N-oxide, or (2,2,6,6-tetramethylpiperidine-1-yl)oxyl.
Claims8
A washing or cleaning agent, comprising a mediator compound in the form of anionically substituted 1-hydroxy-2,2,6,6-tetramethylpiperidine, 2,2,6,6-tetramethylpiperidine-N-oxide, or (2,2,6,6-tetramethylpiperidin-1-yl)oxyl.
A method for washing textiles or for cleaning hard surfaces, wherein the textiles or hard surfaces are contacted with a bleaching-active species, generated electrolytically by a redox reaction in an electrolysis device from anionically substituted 1-hydroxy-2,2,6,6-tetramethylpiperidine, 2,2,6,6-tetramethylpiperidine-N-oxide, or (2,2,6,6-tetramethylpiperidin-1-yl)oxyl in an aqueous bath.
The method according to claim 4, characterized in that the bath containing the mediator compound is electrolyzed continuously or once or repeatedly for specific time periods.
The method according to claim 4 or 5, characterized in that the electrolysis device is formed as a separate device independent of a washing machine or dishwasher, and said device operates on its own power source.
Dependencies are inferred from the claim text.