发明名称 |
METHOD FOR PRODUCING MELEM-FREE MELAMINE AND QUENCHING AGENTS |
摘要 |
The invention relates to a method for producing melem-free melamine by means of aqueous processing of a melted mass of melamine which is obtained using a high-pressure method. According to the inventive method, the melted mass of melamine is quenched by means of an aqueous solution containing alkalis, following the isolation of the off-gases, and is directly transferred into an aqueous alkaline melamine solution, out of which the melamine is then crystallised. The invention thus enables melamine to be obtained, with a melam content of less than 1000 ppm and a melem content of less than 50 ppm. The invention also relates to a quenching agent.
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申请公布号 |
KR20050025132(A) |
申请公布日期 |
2005.03.11 |
申请号 |
KR20047007393 |
申请日期 |
2004.05.14 |
申请人 |
AMI-AGROLINZ MELAMINE INTERNATIONAL GMBH |
发明人 |
KOGLGRUBER, FERDINAND;NEUMUELLER, CHRISTOPH;RUECH, WOLFGANG;WAGNER, HANS CHRISTIAN;SCHROEDER, FRANK |
分类号 |
C07D251/62;(IPC1-7):C07D251/62 |
主分类号 |
C07D251/62 |
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