| 摘要 |
This invention relates to pigment compositions comprising an organic pigment treated with about 0.1 to about 20 percent by weight, based on the organic pigment, of a compound having the formula (I) (see formula) wherein Q represents an organic pigment moiety, X is O or S, Het represents a heteroaromatic group attached at a ring carbon atom the the (thio)amidomethyl -CH2-NH-CX-linking group, and n is from 1 to 4.
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