| 摘要 |
The present invention relates to dispersing agents or their salts, comprising A the reaction product of one or more polyisocyanates having an average functionality of from 2.0 to 5, with B a mixture from B1 monohydroxyl compounds and B2 monohydroxy-, monocarboxylic acid compounds, or monoamino-, monocarboxylic acid compounds and C a compound containing at least one basic ring nitrogen and an isocyanate-reactive group, in which of the isocyanate groups about 30-70% are reacted with B and about 30-70% with C, and the preparation of such dispersing agents.
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