Patent ID: 6261358
Filing Date: 2001-07-17
Classification: C09B

Abstract:
A solid pigment preparation comprising(a) a pigment comprising at least one metal complex of an azo compound conforming to the formula (I) ##STR14##or a tautomeric form thereof,whereinrings X and Y independently are optionally substituted with one or two substituents selected from the group consisting of .dbd.O, .dbd.S, .dbd.NR.sub.7, --NR.sub.6 H.sub.7, --OR.sub.6, --SR.sub.6, --COOR.sub.6, ##STR15##--CN, --CONR.sub.6 R.sub.7, --SO.sub.2 R.sub.8, alkyl, cycloalkyl, aryl, and aralkyl,the dotted lines in each of the rings X and Y optionally represent one or two double bonds such that the total number of endocyclic and exocyclic double bonds is three for each of the rings X and Y,R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently hydrogen, alkyl, cycloalkyl, aryl, or aralkyl, or R.sub.1 and R.sub.2 together and/or R.sub.3 and R.sub.4 together form 5- or 6-membered rings, as indicated by the broken lines, to which further rings are optionally fused,m, n, o, and p are 1 when the corresponding ring nitrogen atom is not part of a double bond or are zero when the corresponding ring nitrogen atom is part of a double bond, as indicated by the dotted lines,R.sub.5 is --OH, --NR.sub.6 R.sub.7, alkyl, cycloalkyl, aryl, or aralkyl, R.sub.6 is hydrogen, alkyl, cycloalkyl, aryl, or aralkyl, R.sub.7 is hydrogen, cyano, alkyl, cycloalkyl, aryl, aralkyl, or acyl,R.sub.8 is alkyl, cycloalkyl, aryl or aralkyl, with the proviso that R.sub.1 to R.sub.8 are optionally further substituted by replacing the hydrogen atom of a CH group, and(b) about 5% to about 200% by weight, relative to the metal complex, of at least one guest compound hosted within the metal complex, wherein said solid pigment preparation is characterized by exhibiting a pH greater than 6.5 when slurried with 20 times the quantity of water.