Patent ID: 6471765
Filing Date: 2002-10-29
Classification: C09B

Abstract:
A composition comprising:(a) a compound of formula â€ƒin which R1 and R2 are independently from each other H, F, Br, Cl, C1-C3alkyl and C1-C3alkoxy; R3 is a group (SO3âˆ’M+)m wherein M+ is H or a metal or ammonium cation and m is a number from zero to 2.5; and R4 is a group â€ƒwhich can be unsubstituted or substituted by 1 to 3 groups halogen, oxy, hydroxy, C1-C3alkoxy, SO3âˆ’M+ or CO2âˆ’M+, wherein X1 to X4 are independently from each other CO, NR5, O, S or SO2, and/or X1 and X2 together, X2 and X3 together or X3 and X4 together are â€ƒand R5 to R7 are independently from each other H, OH, C1-C3alkoxy or C1-C3alkyl or R6 and R7 together with â€”C&boxH;Câ€” form an aromatic or heteroaromatic group; and (b) a sulfonated diketopyrrolopyrrole, wherein the ratio of (a) to (b) is from 5:95 to 95:5.