Publication number: 20050241532
Abstract: The invention concerns a pigment formulation comprising a) at least one metal complex of an azo compound which in the form of its tautomeric structures conforms to the formula (I) where the X and Y rings may independently bear one or two substituents selected from the group consisting of ?O, ?S, ?NR7, —NR6H7, —OR6, —SR6, —COOR6, —CN, —CONR6R7, —SO2R8, ?alkyl, cycloalkyl, aryl and aralkyl wherein the sum total of the endo- and exocyclic double bonds is three for each of the rings X and Y, R6 represents hydrogen, alkyl, cycloalkyl, aryl or aralkyl, R7 represents hydrogen, cyano, alkyl, cycloalkyl, aryl, aralkyl or acyl, R8 represents alkyl, cycloalkyl, aryl or aralkyl, R1, R2, R3, R4 independently represent hydrogen, alkyl, cycloalkyl, aryl or aralkyl and, as indicated by the broken lines in the formula (I), may combine to form 5- or 6-membered rings to which further rings may be fused, R5 represents —OH, —NR6R7, alkyl, cycloalkyl, aryl or aralkyl, wherein the R1 to R8 substituents that contain C
Type:
Application
Filed:
April 19, 2005
Publication date:
November 3, 2005
Inventors:
Ulrich Feldhues, Frank Linke, Ronald Gobel
Patent number: 6261358
Abstract: 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)
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,
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 o
Type:
Grant
Filed:
October 8, 1999
Date of Patent:
July 17, 2001
Assignee:
Bayer Aktiengesellschaft
Inventors:
Richard Sommer, Frank Linke, Udo Herrmann, Gunther Stolp