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    • 8. 发明专利
    • Method for producing ketazine and hydrated hydrazine
    • 生产氯乙烯和水合氢氟酸的方法
    • JP2011246408A
    • 2011-12-08
    • JP2010122535
    • 2010-05-28
    • Mitsubishi Gas Chemical Co Inc三菱瓦斯化学株式会社
    • TAJIMA TSUNEOHAMAGUCHI TAKAYOSHI
    • C07C249/16C01B21/16C07C251/88
    • PROBLEM TO BE SOLVED: To provide a method for stably producing ketazine in high yield without being affected by the reaction residual liquid in the previous batch and without substantially needing supplement of a new hydraulic fluid in the continuous ketazine synthesis using the same reactor.SOLUTION: The method for producing ketazine includes steps of: (a) synthesizing ketazine from hydrogen peroxide, ammonia and ketone in the presence of a hydraulic fluid; (b) separating the resultant ketazine from the hydraulic fluid and distilling the separated hydraulic fluid; and (c) circulating the distilled hydraulic fluid to the step (a) to reuse. The method is characterized in the step (a) by controlling the ketazine concentration of the hydraulic fluid to be 0.1-3.0 wt.% prior to addition of hydrogen peroxide, ammonia and ketone.
    • 要解决的问题:提供一种以高产率稳定地产生酮连氮的方法,而不受上一批中的反应残余液体的影响,并且在使用相同反应器的连续酮连氮合成中基本上不需要补充新的液压油 。 解决方案:制备酮连氮的方法包括以下步骤:(a)在液压油存在下由过氧化氢,氨和酮合成酮连氮; (b)从所述液压流体中分离所得的酮连氮并蒸馏所述分离的液压流体; 和(c)将蒸馏的液压流体循环到步骤(a)以重复使用。 在加入过氧化氢,氨和酮之前,通过将液压油的酮连氮浓度控制在0.1-3.0重量%,该方法的特征在于步骤(a)。 版权所有(C)2012,JPO&INPIT