C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 45/14 (2006.01) C08K 5/3462 (2006.01) C08K 5/36 (2006.01) C09B 67/00 (2006.01) C09B 67/10 (2006.01) D06P 1/10 (2006.01)
Patent
CA 2285800
Solid pigment preparations comprising as pigment at least one metal complex of an azo compound which in the form of its tautomeric structures conforms to the formula (I) (see above formula I) wherein the rings X and Y may each independently bear one or two substituents selected from the group consisting of =O, =S, =NR7, -NR6H7, -OR6, -SR6, -COOR6, -CN, -CONR6R7, -SO2R8, -~-CN, alkyl, cycloalkyl, aryl and aralkyl, the sum total of the endo- and exocyclic double bonds being three for each of the rings X and Y, R6 is hydrogen, alkyl, cycloalkyl, aryl or aralkyl, R7 is hydrogen, cyano, alkyl, cycloalkyl, aryl, aralkyl or acyl, R8 is alkyl, cycloalkyl, aryl or aralkyl, R1, R2, R3 and R4 are each independently hydrogen, alkyl, cycloalkyl, aryl or aralkyl and furthermore, as indicated by the broken lines in the formula (I), may form 5- or 6-membered rings to which further rings may be fused, R5 is -OH, -NR6R7, alkyl, cycloalkyl, aryl or aralkyl, the substituents mentioned for R1 to R8 which contain CH bonds may in turn be substituted, and m, n, o and p are each 1 or, if the ring nitrogen atoms are the starting points for double bonds, as indicated by the dotted lines in the formula (I), may also be zero, and which metal complex hosts at least one other compound as guest compound, characterized in that a slurry of the solid pigment preparations with 20 times the amount of water has a pH of >6.5.
Herrmann Udo
Linke Frank
Sommer Richard
Stolp Gunther
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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