abstract |
(57) Abstract: A novel sulfur dye is provided. SOLUTION: The following formula At least one sulfur dye intermediate, wherein R and R 1 are independently nitro, nitroso or amino, Reaction of sulfur compounds and (A) aldehyde, (B) urea, (C) benzoquinone or naphthoquinone, (D) monoethanolamine, and reaction products of (A), (B), (C) or (D) Sulfur dye obtained. |