Original document(4 pages)  中文版
    The disclosed preparation method for 5, 5-dimethylhydantoin comprises: adding ammonia water and acetone cyanohydrin into the kettle for reaction; while starting the gas input valve of kettle and the connected gas output valve of condenser to lead NH4HCO3 converted gas into the kettle till there is no CN- in reaction material. This invention reduces device cost and CO2 waste, has some protection to environment, and improves production and economic benefit.
Application Number
申请号		 200610038040 Application Date
申请日		 2006.01.23
Title 名称 Method for preparing 5,5-dimethylhydantion
Publication Number
公开号		 1803775 Publication Date
公开日		 2006.07.19
Approval Pub. Date Granted Pub. Date
International Classification 分类号 C07D233/74
Applicant(s) Name
申请人		 Zhou Xinji
Address 地址 226401
Inventor(s) Name 发明人 Zhou Xinji, Zheng Xiaobing, Gao Jiye, Zhang Longhua
Attorney & Agent 代理人 ge lei

  
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