| abstract |
Isoindolinone pigments of the formula WHEREIN M denotes a polyvalent metal atom other than an alkaline earth, R denotes an organic radical, X denotes an O or S atom or an imino group, X1 and Y1 denote H or halogen atoms, alkyl, alkoxy, alkoxycarbonyl, alkylsulphonyl or alkylcarbamoyl groups containing 1-6 C atoms, or nitro, carbamoyl or aralcarbamoyl groups, or the radicals X1 and Y1 form a fused benzene ring, X2 denotes an H atom, Y denotes a halogen atom and Z denotes a nitro, a carbamoyl or phenylcarbamoyl group, an alkylcarbamoyl group having 2-6 C atoms, or a group of the formula R1Y2, wherein R1 represents an H atom, an alkyl or cycloalkyl group containing 1-6 C atoms or an aralkyl or aryl group and Y2 represents an O or S atom, m denotes 0-4, n denotes 0-4 and p denotes 0-3 and the sum of m+n+p must be 4, are useful for coloring plastics and lacquers in yellow to orange shades of excellent fastness properties. |