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发明公开
CN108069873A 一种制备丙酮肟的方法 无效 - 驳回

一种制备丙酮肟的方法
摘要：
本发明涉及一种制备丙酮肟的方法，其包括如下步骤：a)反应体系的制备：在反应器中按照摩尔比1.0:5.0～35.0加入酮肟和丙酮，再加入酸催化剂和溶剂，在反应器内搅拌混合均匀形成反应体系，该反应体系的pH值在1～5；b)丙酮肟的合成反应：将步骤a)得到的反应体系加热，控制反应温度在5～100℃，在0～2atm压力下，反应5～10小时；c)丙酮肟的提纯：将步骤b)得到的产物提纯得到丙酮肟。本发明的方法具有反应转化率高，丙酮肟选择性高的优点，并且反应过程简单，环境友好，减少对环境的污染，易于工业化生产。
摘要（英）：

The invention relates to a preparation method for acetoxime. The preparation method comprises the following steps: a) preparation of a reaction system: adding ketoxime and acetone in a molar ratio of1.0: (5.0-35.0) into a reactor, then adding an acid catalyst and a solvent, and carrying out uniform mixing in the reactor under stirring to form the reaction system which has a pH value of 1 to 5; b)a synthetic reaction of acetoxime: heating the reaction system obtained in step a) and carrying out the reaction for 5 to 10 h with reaction temperature controlled to be 5 to 100 DEG C and a pressurecontrolled to be 0 to 2 atm; and c) purification of acetoxime: purifying a product obtained in step b) so as to obtain acetoxime. The method of the invention has the advantages of high reaction conversion rate, high acetoxime selectivity, simple reaction process, environmental friendliness, reduced environmental pollution and easy industrial production.

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