| 摘要 |
The invention relates to pyrazolone pigments of general formula (I), wherein the radicals R<1>, R<2>, R<3 >and R<4 >independently represent hydrogen, chlorine, methyl or ethyl, whereby at least one of the radicals R<1>-R<4 >is different from hydrogen. The inventive pigments are characterised by a CIELAB colour angle of 80-85°, a chroma of 58-62 and a luminosity >=87 (measuring angle 45°, standard illuminant D65). |
