Pigment formulations and processes for their preparation

A process for the preparation of a pigment formulation wherein the pigment formulation comprises

• a) 99.5 to 80% by weight of at least one organic pigment selected from the group consisting of perylene pigments, perinone pigments, quinacridone pigments, azo pigments, benzimidazolone pigments, anthraquinone pigments and anthanthrone pigments, and
• b) 0.5 to 20% by weight of at least one pigment-dispersing agent having a formula ##STR13## in which R.sup.1 is a hydrogen atom, hydroxyl, amino or an alkyl group having 1 to 8 carbon atoms, which is optionally substituted by 1 to 4 chlorine or bromine atoms, by a phenyl, cyano, hydroxyl, carbamoyl, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy group, or which is perfluorinated or partly fluorinated;
• R.sup.2 and R.sup.3 independently of one another are a hydrogen atom, a substituted or unsubstituted or partly fluorinated or perfluorinated alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted or partly fluorinated or perfluorinated alkenyl group having 2 to 20 carbon atoms, it being possible for the substituents to be hydroxyl, phenyl, cyano, chlorine, bromine, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy, or R.sup.2 and R.sup.3, together with the N atom, form a saturated, unsaturated or aromatic heterocyclic ring, which optionally contains a further nitrogen, oxygen or sulfur atom in the ring;
• and
• n is a number from 1 to 6;
• comprising the step of combining the pigment-dispersing agent of the formula (I) and the organic pigment.

A method of pigmenting high molecular weight organic materials of natural or synthetic origin in a form selected from the group consisting of plastic compositions, melts, spinning solutions, coatings, paints, toners and printing inks, comprising the step of adding a pigment formulation to said materials wherein said pigment formulation comprises

• a) 99.5 to 80% by weight of at least one organic pigment selected from the group consisting of perylene pigments, perinone pigments, quinacridone pigments, azo pigments, benzimidazolone pigments, anthraquinone pigments and anthanthrone pigments, and
• b) 0.5 to 20% by weight of at least one pigment-dispersing agent having a formula ##STR16## in which R.sup.1 is a hydrogen atom, hydroxyl, amino or an alkyl group having 1 to 8 carbon atoms, which is optionally substituted by 1 to 4 chlorine or bromine atoms, by a phenyl, cyano, hydroxyl, carbamoyl, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy group, or which is perfluorinated or partly fluorinated;
• R.sup.2 and R.sup.3 independently of one another are a hydrogen atom, a substituted or unsubstituted or partly fluorinated or perfluorinated alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted or partly fluorinated or perfluorinated alkenyl group having 2 to 20 carbon atoms, it being possible for the substituents to be hydroxyl, phenyl, cyano, chlorine, bromine, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy, or R.sup.2 and R.sup.3, together with the N atom, form a saturated, unsaturated or aromatic heterocyclic ring, which optionally contains a further nitrogen, oxygen or sulfur atom in the ring;
• and
• n is a number from 1 to 6.

A pigment preparation comprising

• a) at least one organic pigment selected from the group consisting of perylene pigments, perinone pigments, quinacridone pigments, azo pigments, benzimidazolone pigments, anthraquinone pigments and anthanthrone pigments,
• b) at least one pigment-dispersing agent having a formula ##STR17## in which R.sup.1 is a hydrogen atom, hydroxyl, amino or an alkyl group having 1 to 8 carbon atoms, which is optionally substituted by 1 to 4 chlorine or bromine atoms, by a phenyl, cyano, hydroxyl, carbamoyl, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy group, or which is perfluorinated or partly fluorinated;
• R.sup.2 and R.sup.3 independently of one another are a hydrogen atom, a substituted or unsubstituted or partly fluorinated or perfluorinated alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted or partly fluorinated or perfluorinated alkenyl group having 2 to 20 carbon atoms, it being possible for the substituents to be hydroxyl, phenyl, cyano, chlorine, bromine, C.sub.2 -C.sub.4 -acyl or C.sub.1 -C.sub.4 -alkoxy, or R.sup.2 and R.sup.3, together with the N atom, form a saturated, unsaturated or aromatic heterocyclic ring, which optionally contains a further nitrogen, oxygen or sulfur atom in the ring;
• and
• n is a number from 1 to 6, and
• c) a high molecular weight organic material of natural or synthetic origin in a form selected from the group consisting of plastic compositions, melts, spinning solutions, coatings, paints, toners and printing inks.