Photolabile pro-fragrances
AssigneeHenkel AG & Co. KGaA
InventorsThomas Gerke, Christian Kropf, Ursula Huchel, Axel Griesbeck, Olga Hinze
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Abstract
Fragrances having a fresh character are usually very volatile and therefore not very economical in typical applications such as washing or cleaning processes for example. For that reason they have to be used in relatively large amounts in order to bring about appropriate effects. The present invention describes photolabile pro-fragrances that allow for a greatly improved persistence of the fragrance impression, in particular one having a fresh character, in typical applications. A more economical use of the fragrances in question can be ensured in this way.
Claims10
A compound of the general formula (I),
- wherein at least two of the residues R in formula (I) denote the residue a shown in square brackets,
- and wherein the remaining residues R in formula (I), independently of one another, each denote hydrogen, a halogen atom, —NO2, a linear or branched, substituted or unsubstituted alkoxy group having 1 to 15 C atoms, a linear or branched, substituted or unsubstituted alkyl group having 1 to 15 C atoms, an aryl residue, a cycloalkyl residue, acyl residue, —OH, —NH alkyl, —NH2 or —N(alkyl)2, and wherein for each residue a set in square brackets, independently of one another,
- R2 denotes a substituted hydrocarbon residue having at least one C═O group,
- R1 and R3, independently of one another, each denote hydrogen, a halogen atom, —NO2, a linear or branched, substituted or unsubstituted alkoxy group having 1 to 15 C atoms, a linear or branched, substituted or unsubstituted alkyl group having 1 to 15 C atoms, an aryl residue, a cycloalkyl residue, acyl residue, —OH, —NH alkyl, —NH2 or —N(alkyl)2.
Dependencies are inferred from the claim text.