| 摘要 |
This invention relates to a process for preparing pigment compositions by (a) treating an organic pigment with (1) a sterically hindered and/or bulky primary amine, and (2) a liquid in which the organic pigment is insoluble, and (b) blending the resultant surface-treated pigment composition from step (a) with a pigment derivative of formula (I) <CHEM> wherein Q represents an organic pigment moiety, X is O, S, NR<1>, -SO2-, -CO-, -Alk-, -Ar-, or combinations thereof, Y is -OR<2>, -NR<3>R<4>, or Het, Alk is C1-C5 alkylene, C2-C5 alkenylene, or C4-C5 alkadienylene, or substituted derivatives thereof, Ar is arylene, R<1>, R<2>, R<3>, and R<4> are independently hydrogen, C1-C6 alkyl, C5-C7 cycloalkyl, C7-C16 aralkyl, or C6-C10 aryl, Het is a heterocycle, and n is 1 to 4. e
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