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Anthraquinone dyestuff manufacture

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专利汇可以提供Anthraquinone dyestuff manufacture专利检索,专利查询,专利分析的服务。并且Anthraquinone dyes are prepared in substantially quantitative yields by reacting a diaminodihydroxyanthraquinone, such as 4,5diaminochrysazin, with a benzenesulfonyl chloride in a thin fluid melt consisting essentially of anhydrous aluminum halide in admixture with a compound that gives a fluid melt at low temperatures. New dyes having improved substantivity on polyester fibers are made by an alternate embodiment involving the concurrent addition of a halogen such as bromine to the anhydrous aluminum halide melt.,下面是Anthraquinone dyestuff manufacture专利的具体信息内容。

  • 2. Method according to claim 1 in which the reaction temperature of the melt is 75*-125*C. and the melt is anhydrous aluminum chloride.
  • 3. A method of making an anthraquinone dye of the formula:
  • 4. Method according to claim 3 in which the reaction temperature of the melt is 75*-125*C. and the melt is anhydrous aluminum chloride.
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