| 摘要 |
<p>Salts of 3-(benzimidazolyl-2')-7-dialkylaminocoumarin sulphonic acid are of formula in which R and R1 are Me or Et or together with N atom form the residue of a 5- or 6-membered heterocyclic ring, R2 is H, Me or Et, R3 is H, Cl or Br or Me, Et, MeO or EtO, and X is radical with a cationic N. The salts are dyes suitable for dyeing solvents, lacquers coating agents, textiles, paper and plastics.</p> |
