Patent ID: 7909892
Filing Date: 2011-03-22
Classification: C09B,Y10S

Abstract:
1. An aqueous dye solution, comprising a) 5 to 30% by weight of a dye of formula (1) in which K is a residue of a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series and M is hydrogen, an alkali metal or alkaline b) 0.05 to 5% by weight of one or more compounds of formula (2) in which A represents —NR M is as previously defined, and R provided that A is not represented by —NH or A is a residue of formula (3) X represents O, S or NR Y represents N or CR P, Q and R each, independently of one another, represent hydrogen, C c) an organic or an inorganic base or mixtures thereof, d) optionally, further additives and e) water.