Bisazo inkjet dyes

摘要

A dye of Formula (1) and salts thereof: <IMAGE> Formula (1) in which R is H, -NHC1-4-alkylN(C1-4-alkyl)2 or <IMAGE> R1 and R2 each independently is H, optionally substituted C1-4-alkyl or optionally substituted aryl; R3 is C1-4-alkyl; R4 is C1-4-alkyl or OC1-4-alkyl; R5 is H; R6 is COOH; and n is 1, 2 or 3. The dyes are useful for preparing ink jet printer inks.