Patent ID: 6225472
Filing Date: 2001-05-01
Classification: C09B

Abstract:
A 6,13-dihydroquinacridone derivative of formula I:(MO.sub.3 S).sub.m --Q--[CH.sub.2 --(X)--(Y).sub.n ].sub.o (I)wherein:Q represents a 6,13-dihydroquinacridone moiety of formula II; ##STR3##A and B each independently represent a substituent selected from H, F, Cl, C.sub.1 -C.sub.3 alkyl and C.sub.1 -C.sub.3 alkoxyM represents a metal cation, quaternary N cation or H;X is an aromatic group, a cyclo-hetero aliphatic group with at least one 5 atom or 6 atom ring or a hetero aromatic group with at least one 5 or 6 atom ring and which is not a phthalimido group;Y is a sulfonic or carboxylic acid or salt thereof;m and n independently from each other are a number from zero to 2.5; ando is a number from zero to 4, and where m is not zero.