| 摘要 |
The invention relates to compounds suitable as dispersion agent for pigments, of general formulae (I) to (III): R<1>-X-[-CO-NH-R<2>-NH-CO-Y-R<3>-Y-]r-CO-NH-R<2>-NH-CO-X-R<1 >(I); R<1>-X-[-CO-NH-R<2>-NH-CO-Y-R<3>-Y-]r-CO-NH-R<4 >(II); R<1>-X-[-CO-NH-R<2>-NH-CO-Y-R<3>-Y-]r-CO-NH-R<2>-NH-CO-Z-R<5 >(III), where R<1>=an alkyl-capped oligoalkylenoxide residue of general formula (IV): R<6>O-(-CH2-CH2-O-)a-(R<7>-O-)b- (IV), and X, Y and Z each=O or NH, R<2>=arylene or arylalkylene group on a diisocyanate, R<3>=alkylene, arylene or arylalkylene group on a diol or diamine, R<4>=alkyl, aryl or arylalkyl group on a monoisocyanate, R<5>=alkyl, aryl or arylalkyl on a monoalcohol or monioamine, R<6>=alkyl with 1 to 4 C atoms, R<7>=branched alkylene group with 3 to 8 C atoms, r=a rational number from 0 to 100, a=a whole number from 1 to 300 and b=a whole number from 0 to 30.
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