Ethylenediamine is used as a dye intermediate

“Study on the Synthesis Process of the Reactive Bright Blue Dye HE-GN” 49184 Table of Contents Table of Contents Abstract Introduction Part I: Literature Review 1.1 Introduction 1.2 Structure and Properties of Dye Precursors 1.3 Research Progress on Triphenyldioxazine Reactive Dyes 1.4 Ethersulfone-Type Triphenyldioxazine Reactive Dyes 1.4.1 Synthesis of Ethersulfone-Type Triphenyldioxazine Reactive Dyes 1.4.2 Applications of Ethersulfone-Type Triphenyldioxazine Reactive Dyes Part II: General Principles 1. Aminolysis of 1,2-Dichloro-5-nitrobenzenesulfonic Acid 2. Reduction of N-(4-Nitro-2-sulfonophenyl)ethylenediamine 3. Condensation Reaction between N-(4-Amino-2-sulfonophenyl)ethylenediamine and Tetrachlorobenzoquinone 4. Oxidative Cyclization Reaction Part III: Experimental Section I. Determination of Raw Material Purity 1. Determination of the Content of 1,2-Dichloro-5-nitrobenzenesulfonic Acid 2. Determination of the Content of Ethylenediamine 3. Determination of the Content of Tetrachlorobenzoquinone II. Synthesis of Intermediates 1. Synthesis of N-(4-Nitro-2-sulfonophenyl)ethylenediamine 2. Synthesis of N-(4-Amino-2-sulfonophenyl)ethylenediamine III. Determination of the Amine Value IV. Synthesis of the Dye Precursor V. Synthesis of Reactive Bright Blue HE-GN VI. Dyeing Conclusions References Acknowledgments Appendices 1. Structural Analysis of By-products in the Synthesis of N-(4-Amino-2-sulfonophenyl)ethylenediamine 2. Analysis of Tetrachlorobenzoquinone Using High-Performance Liquid Chromatography Combined with Organic Mass Spectrometry 3. Ortho-Sulfonation of p-Nitrochlorobenzene 4. Analysis Methods for the Content of Ethylenediamine 5. Determination of the Content of the Dye Precursor 6. Continuous Distillation Method for Ethylenediamine 7. High-Performance Liquid Chromatography Chromatogram of N-(4-Nitro-2-sulfonophenyl)ethylenediamine 8. High-Performance Liquid Chromatography Chromatogram of N-(4-Amino-2-sulfonophenyl)ethylenediamine Note: Some page numbers in the original book are unclear, especially on the last few pages

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