Monazo pigments containing hydroxynaphthoylaminobenzimidazalone radical

Claim 1

A monoazo pigment of the formula ##STR19## wherein Z represents --CO-- or --SO 2 --, Q represents hydrogen, bromine or methoxy, Y 1 represents hydrogen, chlorine, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, Y 2 and Y 3 independently represent a hydrogen, chlorine, trifluoromethyl, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, alkanoylamino of 2 to 4 carbon atoms or the --COOR 1 , wherein R 1 represents alkyl of 1 to 4 carbon atoms which is unsubstituted or substituted by halogen, alkoxy of 1 to 4 carbon atoms; cycloalkyl of 5 to 6 carbon atoms; benzyl which is unsubstituted or substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms; or phenyl which is unsubstituted or substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy groups of 1 to 4 carbon atoms, or Y 2 and Y 3 together with the carbon atoms to which they are attached form benzene ring which is unsubstituted or substituted by chlorine, X 1 represents hydrogen, chlorine, an alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, alkoxycarbonyl of 2 to 4 carbon atoms or phenoxy, R 2 represents hydrogen, alkyl of 1 to 4 carbon atoms or phenyl which is unsubstituted or substituted by halogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, X 2 represents hydrogen, halogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or a phenoxy, and n is 1 or 2. with the proviso that if R 2 represents alkyl or phenyl, at least one of Y 1 , Y 2 or Y 3 may not represent hydrogen.