COLORANT BLENDS CONTAINING A SALT-FORMING AZO PIGMENT AND A 1,4-DIKETO-3, 6-DIARYLPYRROLO(3,4-C)PYROLLE

摘要

The present invention relates to colorant blends comprising (a) an azo component, which is a salt of a salt-forming azo pigment of formula (I): A-N=N-B, wherein A is the residue of a diazo component and B is the residue of a coupling component; and (b) a second component, which is an opaque 1,4-diketo-3, 6-diaryl-pyrrolo[3,4-c]-pyrrole pigment. The colorant blends are especially useful in coating compositions such as paints.