发明名称 PROCESS FOR PREPARING MELAMINE FROM UREA
摘要 Process for preparing melamine from urea at elevated temperature and in the presence of a catalyst, in which a gaseous product stream is obtained which is contacted with a liquid coolant in a cooling zone and in which a proportion of the concentrated aqueous carbamate solution from the absorption zone is returned to the cooling zone.
申请公布号 WO0156999(A1) 申请公布日期 2001.08.09
申请号 WO2001NL00046 申请日期 2001.01.23
申请人 DSM N.V.;DE WIT, NORA, ANNA;GULPERS, ROB, KASIMIER 发明人 DE WIT, NORA, ANNA;GULPERS, ROB, KASIMIER
分类号 C07D251/60;(IPC1-7):C07D251/60;C07B63/00 主分类号 C07D251/60
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