Anionic cyclodiylide compounds, their preparation and use in washing agents as shading dyes
AssigneeCiba-Geigy Corporation
InventorsRudolf Naef, Claude Eckhardt
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Abstract
Compounds of the formula ##STR1## in which X, Y, A and M are as defined in claim 1, a process for their preparation and their use as shading dyes in washing agents.
Claims6
A method of bluing fabrics, which method comprises applying an aqueous washing composition which contains an effective amount of a bluing compound of the formula ##STR13## in which X is substituted or unsubstituted, 5- and/or 6-membered monocyclic or polycyclic aromatic radical, Y is a substituted or unsubstituted 5- or 6-membered monocyclic or polycyclic aromatic radical, M is an alkali metal or an ammonium ion, A is CN as shading dye.
A solid or liquid washing agent which comprises between 0.0025 to 0.01% of an anionic cyclodiylide compound of the formula ##STR15## in which X is a substituted or unsubstituted, 5- and/or 6-membered monocyclic or polycyclic aromatic radical, Y is a substituted or unsubstituted 5- or 6-membered monocylic or polycyclic aromatic radical, M is an alkali metal or an ammonium ion, A is CN as shading dye.
Dependencies are inferred from the claim text.