Detergent and brightening composition

Claim 1

A DETERGENT AND WHITENING COMPOSITION FOR MATERIALS COMPOSED OF NITROGENOUS FIBERS COMPRISING AN AMINO-COUMARIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF A DI-LOWER-ALKYLAMINO-COUMARIN AND A DILOWER-ALKYLAMINO-COUMARIN HAVING A LOWER-ALKYL NUCLEAR SUBSTITUENT, SAID AMINO GROUP BEING ATTACHED TO THE BENZENE NUCLEUS AND THE ALKYL GROUPS ATTACHED TO THE AMINO NITROGEN BEING SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL, SAID COUMARIN COMPOUND EXHIBITING BLUE TO VIOLET FLUORESCENCE AND BEING INSOLUBLE IN WATER, DISPERSED IN WATER CONTAINING A NON-IONIC, SURFACE-ACTIVE AGENT CONSISTING ESSENTIALLY OF A POLYETHYLENE GLYCOL ETHER OF AN ALKYL PHENOL WHEREIN THE NUMBER OF OXYETHYLENE GROUPS ARE SO RELATED TO THE SIZE OF THE ALKYL RADICAL AS TO CONFER WATE SOLUBILITY TO SAID COMPOUND, THE AMINOCOUMARINE COMPOUND BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 2% BY WEIGHT OF SAID NON-IONIC, SURFACE-ACTIVE AGENT AND SUFFICIENT TO PRODUCE FLUORESCENCE ON THE MATERIAL BEING TREATED, SAID NON-IONIC, SURFACE-ACTIVE AGENT BEING SUFFICIENT TO MAINTAIN THE AMINO-COUMARIN IN CLEAR SOLUTION AND TO DISTRIBUTE IT SUBSTNATIALLY UNIFORMLY ON THE MATERIAL BEING TREATED.