| abstract |
A dispersing agent for dispersing solid particles in an organic liquid having the composition ##STR1## wherein ##STR2## is the residue of a polyester chain having a molecular weight of at least 1700, derived from a hydroxycarboxylic acid containing 16-22 carbon atoms, ##STR3## is the residue of a mono or polyamide having up to 12 amido bonds, which is amino terminated in both ends and wherein R 1 and R 2 are each independently hydrogen or alkyl or alkenyl containing up to 20 carbon atoms; Z is a salt of a carboxylic acid containing 8-18 carbon atoms and a diamine NHR 3 --T--NH 2 wherein T is alkylene or alkenylene containing 2-12 carbon atoms and optionally comprising one or more oxygen or nitrogen bridges and R 3 is hydrogen or alkyl or alkenyl containing up to 20 carbon atoms; Q is a carboxylic acid containing 8-18 carbon atoms or a diamine NHR 3 --T--NH 2 , wherein T and R 3 are defined as above. Said dispersing agent can be used for preparing an easily dispersable pigment. |