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US 12,680,055 B2Granted
Anthracene-9,10-dione derivatives as photoactivators in detergents
AssigneeHenkel AG & Co. KGaA
InventorsChristian Kropf, Nadia Ledermann
Life of this patent
Estimating the term…
Abstract
Anthracene-9,10-dione derivatives are capable of producing bleach-active species under irradiation of visible light, which lead to an increase of the bleaching power during the washing of textiles.
Claims14
A washing agent comprising alkyloxy-substituted anthracene-9,10-dione of the general formula (I),
- in which R1 and R2 independently of one another is H, SO3−M+ or an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, with the proviso that at least one of the radicals R1 or R2 is an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, X is H or SO3−M+ and M+ is a proton, an alkali metal ion or an ammonium ion or mixtures thereof;
- and
- a nonionic, anionic, cationic, and/or amphoteric surfactant.
A method for removing stains from textile materials comprising
- adding an Alkyloxy-substituted anthracene-9,10-diones of the general formula (I),
- in which R1 and R2 independently of one another is H, SO3−M+ or an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, with the proviso that at least one of the radicals R1 or R2 is an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, x is H or SO3−M+ and M+ is a proton, an alkali metal ion or an ammonium ion or mixtures thereof, in an aqueous washing liquid in which the washing in need of textile materials is located, and
- irradiating the aqueous washing liquid with visible light.
A washing agent comprising alkyloxy-substituted anthracene-9,10-dione of the general formula (I),
- in which R1 and R2 independently of one another is H, SO3−M+ or an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, with the proviso that at least one of the radicals R1 or R2 is an optionally substituted linear or branched alkyl radical having 1 to 20 C atoms, X is H or SO3−M+ and M+ is a proton, an alkali metal ion or an ammonium ion or mixtures thereof,
- characterized in that the washing agent is present as a prefabricated dosage unit with a water-soluble coating.
Dependencies are inferred from the claim text.