Patent ID: 6320031
Filing Date: 2001-11-20
Classification: C09B,C09D,Y10S

Abstract:
A monoazo dye of formula (3) ##STR13##whereinR.sub.1 represents hydrogen or alkyl with 1 to 6 C atoms;n is 2, 3 or 4;A represents NR.sub.3 R.sub.4, wherein R.sub.3 and R.sub.4 independently represent hydrogen; alkyl with 1 to 8 C atoms; substituted alkyl with 2 to 6 C atoms, where the substituents are selected from the group consisting of OH, OCH.sub.3, COOM and SO.sub.3 M; aralkyl; aryl or substituted aryl, where the substituents are selected from the group consisting of OCH.sub.3, Cl, Br, COOM and SO.sub.3 M; or where R.sub.3 and R.sub.4 together form a ring with or without a hetero atom;R.sub.2 represents alkyl with 1 to 6 C atoms;andM 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 12 C atoms.