Synthesis method of adipic acid dihydrazide

• Main Author: LI YASHAN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses a synthesis method of adipic acid dihydrazide. The method is characterized by taking adipic acid and hydrazine hydrate as raw materials, and synthesizing adipic acid dihydrazide via a one-step method by using a composite catalyst. The water in reaction system is continuously removed through distillation in the reaction process, so that the progress of the hydrazine reaction is effectively accelerated; the reaction yield is increased; the reaction yield metered according to adipic acid is 90% or more; the post-treatment is simple; the product is few in impurities and high in purity; the catalyst can be recycled; the reaction process is free of by-products and wastewater; the method is short in reaction time, low in energy consumption and low in environment pollution, and is a green and environment-friendly production process. 本发明公开了种己二酸二酰肼的合成方法，该方法以己二酸和水合肼为原料，使用复合催化剂，步法合成己二酸二酰肼，在反应过程中通过蒸馏将反应体系中的水分不断脱除，有效地促进了肼化反应的进行、提高了反应收率，以己二酸计反应收率在90%以上，后处理简单，产品杂质少纯度高，催化剂可回收循环使用，反应过程无副产物及废水产生，反应时间短，能耗