| 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 DEG , a chroma of 58 - 62 and a luminosity >/= 87 (measuring angle 45 DEG , standard illuminant D65). |
