890710-13-1Relevant articles and documents
Unsymmetrical Diazo Compounds, Compositions Comprising Same, Dyeing Method and Device Comprising Said Compositions
-
Page/Page column 20, (2008/12/06)
The invention concerns symmetric diazo cationic compounds of formula (I), their resonance forms, as well as their acid-addition salts and their solvates, wherein W1, identical represent a hydrogen atom, a halogen atom, a —NR5R6
Dissymmetrical diazo compounds comprising 2-pyridinium group and a cationic or non-cationic linker, compositions comprising them, method for coloring, and device
-
Page/Page column 15-16, (2008/06/13)
Disclosed herein are dissymmetrical cationic diazo compounds comprising a 2-pyridinium group and a cationic or non-cationic linker. Also disclosed herein are dyeing compositions comprising such compounds as a direct dye in a medium appropriate for the dye