| abstract |
Anionic dyestuffs which contain as the cation at least one cation of the formula <IMAGE> wherein R1, R2 and R3 denote alkyl with 1-6 C-atoms, cycloalkyl with 5-7 C-atoms or aralkyl with 7-12 C-atoms or represent a group <IMAGE> wherein R4 and R5 denote hydrogen, methyl or ethyl and N REPRESENTS THE NUMBERS 1-20 ARE SUITABLE FOR THE PREPARATION OF STORAGE-STABLE, WATER-MISCIBLE, CONCENTRATED SOLUTIONS. |