| 摘要 |
<p>A pigment which is stable in nitrocellulose and comprises at least one trisaminotriarylmethane dye and heteropolyacids based on phosphoric acid, molybdic acid or tungstic acid, the pigment containing from 0.1 to 10% by weight (based on the pigment formulation) of a compound which possesses at least one -N(CH2-COOH)2 group. The pigment may be used for the stable coloration of nitrocellulose-containing printing inks and finishes or of nitrocellulose chips.</p> |
