Patent ID: 6632932
Filing Date: 2003-10-14
Classification: C09B

Abstract:
A trisazo compound represented by the formula: wherein A1 is a group represented by the formula â€”COOM or â€”SO3M wherein M is each independently a hydrogen atom, ammonium, alkali metal, hydroxyammonium, alkylammonium or alkanolammonium, A2 is a hydrogen atom or a group represented by the formula â€”COOM or â€”SO3M wherein M is the same as that described above, R is each independently a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, an alkoxy group having from 1 to 6 carbon atoms, a hydroxyl group, a sulfamoyl group, a carbamoyl group, a cyano group, an acetyl group, a sulfonic group, a carboxyl group or a halogen atom, B is a moiety represented by the formula: wherein, M is the same as that described above, Nps is a moiety represented by the formula: wherein M is the same as that described above.