BISAZO AND TRISAZO COPPER COMPLEX DYESTUFFS

摘要

This invention relates to coppered bis- or trisazo dyestuffs containing at least two (for bisazo) and at least three (for trisazo) alkyl-, alkoxy- or aryl- ammonium sulfonate groups or sulfonate groups with Rhodamine B type or Rosinamine D type counterions. The invention also relates to various intermediates used in the preparation of the metallized dyes, to compositions, and to processes for preparing the metallized dyestuffs. The compounds are particularly suited for the application in lacquers.