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发明公开
CN106748891A 一种苯胺与尿素制备二苯基脲的方法 无效 - 驳回

一种苯胺与尿素制备二苯基脲的方法
摘要：
本发明提供了一种苯胺与尿素制备二苯基脲的方法，包括尿素和苯胺混合，在惰性气体保护下，控制反应压力为表压0.01‑3.00Mpa、反应温度为160‑240℃，制备得到二苯基脲；其中，还包括对反应生成的氨气进行排除的步骤。本发明不仅简化了制备工艺，而且提高了二苯基脲的产率。
摘要（英）：

The invention provides a method for preparing diphenylurea from aniline and urea. The method comprises the following steps: mixing urea with aniline, and carrying out a reaction under a meter pressure of 0.01-3.00 Mpa at a reaction temperature of 160-240 DEG C under the protection of inert gas to prepare the diphenylurea, wherein the method also comprises a step of removing ammonia gas generated in the reaction. The method simplifies the preparation process and increases the yield of diphenylurea.

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