Compositions for the improvement of fastness properties of dyeings and printings of water-soluble dyestuffs

Claim 1

A COMPOSITION OF MATTER FOR IMPROVING THE FASTNESS PROPERTIES OF DYEINGS AND PRINTS OF WATER-SOLUBLE SUBSTANTIVE DYESTUFFS, THE WATERSOLUBILITY OF WHICH IS DUE TO THE PRESENCE OF AN ACID SOLUBILISING GROUP, AND WHICH FORM COMPLEX COPPER COMPOUNDS WHEN TREATED WITH WATER-SOLUBLE COPPER COMPOUNDS AND WHICH DYEINGS HAVE TO BE COPPERED TO GIVE DYEINGS OF VALUABLE PROPERTIES, CONSISTING ESSENTIALLY OF (A) A CONDENSATION PRODUCT OF AN ALDEHYDE WITH A NITROGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICYANDIAMIDE, DICYANDIAMIDINE, GUANIDINE, BIGUANIDE, DERIVATIVE OF THESE NITROGEN COMPOUNDS WHEREIN AT LEAST ONE HYDROGEN ATOM IS SUBSTITUTED BY A HYDROCARBON RESIDUE, AND DERIVATIVES OF THESE NITROGEN COMPOUNDS WHEREIN AT LEAST ONE HYDROGEN ATOM IS SUBSTITUTED BY A HYDRCARBON RESIDUE CONTAINING AT LEAST ONE BASIC AMINO GROUP, WHICH CONDENSATION PRODUCT HAS BEEN PRODUCED BY REACTING 1 TO 4 MOLS OF AN ADEHYDE IN A CONCENTRATED AQUEOUS SOLUTION WITH 1 MOL OF THE NITROGEN COMPOUND WITH THE ADDITION OF 0.1 TO 0.9 EQUIVALENT OF AN ACID FOR EACH MOL OF NITROGEN COMPOUND AT A TEMPERATURE EXCEEDING 50* C., BUT LOWER THAN THE TEMPERATURE OF DECOMPOSITION OF THE CONDENSATION PRODUCT FOR A TIME AT LEAST AS LONG AS IS NECESSARY FOR REACTION TO TAKE PLACE, BUT INSUFFICIENT TO PRODUCE CONDENSATION PRODUCTS WHICH ARE INSOLUBLE IN DILUTE FORMIC ACID, AND (B) A WATER-SOLUBLE COPPER COMPOUND.