| 摘要 |
<p>NEW MATERIAL:Compounds represented by the formula, wherein X and Y are each nitro or hydroxy; R<1> and R<2> are each an alkyl; and R<2>, R<3> and R<4> are each H or an alkyl. USE:Blue dyes for a filter, which have excellent resistance to light and heat. Examples of substrates which can be colored with the dyes are thermoplastic resins (e.g., polystyrene, polyethylene, acrylic resins, or polycarbonates), thermosetting resins (e.g., amino resins, phenolic resin, polyurethanes, or polycarbonates), alumina film (supported by glass or a resin) and silica film (supported by glass or a resin). THe coloring of these materials can be made by incorporation, transfer, dyeing, sublimation deposition, etc. PREPARATION:Dinitrodihydroxyanthraquinone or tetrahydroxyanthraquinone and its leuco compd. are reacted with an aniline derivative to obtain the desired compd.</p> |
