| abstract |
This invention relates to pigment compositions comprising an organic pigment treated with about 0.1 to about 20% by weight, based on the organic pigment, of a compound having the formula (I) ##STR1## wherein Q represents an organic pigment moiety, n X is O or S, n Het represents a heteroaromatic group attached at a ring carbon atom to the (thio)amidomethyl --CH 2 --NH--CX-- linking group, and n n is from 1 to 4. |