| 摘要 |
A dispersing agent for dispersing solid particles in an organic liquid having the composition <IMAGE> wherein <IMAGE> 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, <IMAGE> is the residue of a mono or polyamide having up to 12 amido bonds, which is amino terminated in both ends and wherein R1 and R2 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 NHR3-T-NH2 wherein T is alkylene or alkenylene containing 2-12 carbon atoms and optionally comprising one or more oxygen or nitrogen bridges and R3 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 NHR3-T-NH2, wherein T and R3 are defined as above. Said dispersing agent can be used for preparing an easily dispersable pigment.
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