双乙烯酮是合成丁酮酸、乙酰醋酸酯类、酰胺类及吡唑酮类的主要原料。双乙烯酮可以从乙酸直接制取,也可用丙酮、乙酐、乙酸酯为原料进行热分解。目前国内主要生产厂家有青岛染料厂、青岛农药厂、上海第五制药厂、杭州长征化工厂等。近两年来,虽然双乙烯酮的产量有较大幅度的增长,但随着 Diketene is the main raw material for the synthesis of butyric acid, acetoacetates, amides and pyrazolone. Diketene can be obtained directly from acetic acid, and acetone, acetic anhydride, and acetate can also be used as raw materials for thermal decomposition. At present, major domestic manufacturers include Qingdao Dye Factory, Qingdao Pesticide Factory, Shanghai Fifth Pharmaceutical Factory, and Hangzhou Changzheng Chemical Plant. In the past two years, although the production of diketene has increased significantly, with the