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公开(公告)号：EP0012773A1
公开(公告)日：1980-07-09
申请号：EP79900082.3
申请日：1978-12-12
发明人： KIZAWA, Hidenori , ICHIHARA, Ryoichi , YAO, Toshio , KIKUCHI, Ichiro 2510-1, Simonagaya-cho Koonan-ku
IPC分类号： C07D251/32
CPC分类号： C07D251/32
摘要： A method of preparing cyanuric acid wherein molten urea is heated up to the temperature range of from 180° C to 300° C by the use of high-frequency dielectric heating. The molten urea may be either molten urea substantially composed of urea or molten urea which includes molten biurets. The molten urea is converted to cyanuric acid by the generation of heat caused by the dielectric loss in a high-frequency electric field. It will be noted that cyanuric acid does not generate heat. Thus, this invention eliminates the disadvantages of the conventional methods, such as poor heat transfer to the reaction system, contamination of product by raw material, excess heating of product adhesion of product to the walls of reaction vessel and the like.
摘要翻译： 一种制备氰尿酸的人，其中熔融尿素通过使用高频电介质加热至180℃至300℃的温度。 熔融尿素可以是基本上由尿素形成的熔融尿素或包含熔融缩二脲的熔融尿素。 通过在高频电场中由介电损耗引起的热产生熔融尿素而转化为三聚氰酸。 应注意，氰尿酸不产生热量。 因此，本发明消除了常规方法的缺点，例如对反应体系的热传递不良，原料产品污染，产物与反应容器壁的附着产物的过度加热等。
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公开(公告)号：EP0012773B1
公开(公告)日：1982-06-23
申请号：EP79900082.3
申请日：1978-12-12
发明人： KIZAWA, Hidenori , ICHIHARA, Ryoichi , YAO, Toshio , KIKUCHI, Ichiro 2510-1, Simonagaya-cho Koonan-ku
IPC分类号： C07D251/32
CPC分类号： C07D251/32
摘要： A method of preparing cyanuric acid wherein molten urea is heated up to the temperature range of from 180 C to 300 C by the use of high-frequency dielectric heating. The molten urea may be either molten urea substantially composed of urea or molten urea which includes molten biurets. The molten urea is converted to cyanuric acid by the generation of heat caused by the dielectric loss in a high-frequency electric field. It will be noted that cyanuric acid does not generate heat. Thus, this invention eliminates the disadvantages of the conventional methods, such as poor heat transfer to the reaction system, contamination of product by raw material, excess heating of product, adhesion of product to the walls of reaction vessel and the like.
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