| 摘要 |
A dispersing agent of the formula <IMAGE> wherein <IMAGE> is the residue of a polyester chain having a molecular weight of at least 1000; <IMAGE> is the residue of an aliphatic or aromatic amino acid; and -O-A-O-is the residue of a metal salt Me(OH)2, Me(OCOR1)2or Me(OH)2-OCOR1, wherein R1.COO-is the residue of a carboxylic acid, optionally in combination with an aliphatic diamine NHR2-T-NH2, wherein R2 is hydrogen or C1-20 alkyl, and a salt of said diamine and a residual carboxylic acid deriving from the polyester mixture. The dispersing agents are useful for dispersing pigments and dyes in organic liquids.
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