| 摘要 |
A composition comprising (a) an indanthrone blue pigment of formula I <IMAGE> (I) and (b) a sulfonated indanthrone blue derivative of formula II <IMAGE> (II) wherein X(+) is H(+) or a group of the formula Mn(+)/n or N(+)(R)(R1)(R2)(R3), M is a monovalent, divalent or trivalent metal cation, n is 1, 2 or 3, each of R, R1, R2 and R3 is independently hydrogen, C1-C18-alkyl, C5-C6cycloalkyl, phenyl or phenyl which is substituted by C1-C18alkyl, or R2 and R3, together with the linking nitrogen atom, are a pyrrolidine, imidazoline, piperidine, piperazine or morpholine radical, or R1, R2 and R3, together with the linking nitrogen atom, are a pyrrole, pyridine, picoline, pyrazine, quinoline or isoquinoline radical, and m is a value from 0.2 to 3. When used in varnishes, pigment mixtures of this kind are distinguished in particular by increased color strength, improved rheology and high gloss.
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