| abstract |
Salts of anionic dyestuffs which, as a cation, contain at least one quaternary ammonium ion of the formula <IMAGE> in which the radicals R1 to R4 are as defined in Claim 1, are obtained as liquid-aqueous, concentrated dyestuff solutions which are particularly mobile and stable on storage. These solutions are used for the dyeing or printing of organic substrates containing hydroxy groups or nitrogen. |