Patent ID: 6562115
Filing Date: 2003-05-13
Classification: C09B,C09D,Y10S

Abstract:
Monoazo dyes of general formulas (III) whereinR1, R2 independently represent hydrogen, alkyl or alkoxy each having 1 to 4 C atoms, fluoro, chloro or bromo; R3 represents hydrogen, alkyl with 1 to 6 C atoms, substituted alkyl with 2 to 6 C atoms, wherein the substituents are selected from the group consisting of cyano, carboxy, hydroxy, carboxymethyl and carboxyethyl; or phenyl or phenyl substituted by methyl, chloro, bromo, carboxy or sulfo; D1 represents unsubstituted or substituted alkylene with 2 or 3 C atoms, wherein the substituents are selected from the group consisting of alkyl or alkenyl with 1 to 6 C atoms, fluoro, chloro and bromo; CH2OCH2 or CH&boxH;CH or where D1 is part of an aliphatic ring consisting of 5 or 6 C atoms; and M represents hydrogen, a metal cation or an ammonium cation, which may be substituted by one or more alkyl or substituted alkyl groups each having from 1 to 18 C atoms.