| 摘要 |
PURPOSE:To obtain a clear green-colored thermally transferrable coloring material, by bringing leuco-1,4,5,8-tetrahydroxyanthraquinone and a specified aniline derivative into reaction in the presence of zinc, iron or tin, a mineral acid and boric acid at a specified temperature. CONSTITUTION:Leuco-1,4,5,8-tetrahydroxyanthraquinone and an aniline derivative of formula (II) are brought into reaction with each other in the presence of zinc, iron or tin, a mineral acid and boric acid at 80-150 deg.C, in producing a green thermally transferrable coloring material and a coloring material of formula (I) used for coloring a heat-resistant base in a desired pattern or the like. In formulas (I) and (II), R is hydrogen, lower alkyl, lower alkoxy, trifluoromethyl or halogen. |
