发明名称 |
CATALYST-FREE AMMONIA HYDROLYSIS OF METHIONINE HYDANTOIN |
摘要 |
<p>The invention relates to a method for the continuous preparation of methionine, without the isolation of intermediate products, from the hydantoin of methionine by means of catalyst-free ammonia hydrolysis of an aqueous starting solution essentially comprising said hydantoin and at least one associated methionine-producing derivative product, e.g. selected from the group containing hydantoic acid, ureidobutyramide and 2-amino-4-(methylthio)butanamide. The hydrolysis takes place at a temperature of between 100 and 250 °C using a NH<SUB>3</SUB>/hydantoin molar ratio of between 5 and 50.</p> |
申请公布号 |
WO2007034065(A1) |
申请公布日期 |
2007.03.29 |
申请号 |
WO2006FR02139 |
申请日期 |
2006.09.19 |
申请人 |
ADISSEO FRANCE S.A.S.;CASSE, CLAUDE;ROSSI, JEAN-CHRISTOPHE;MEDARD, ALAIN |
发明人 |
CASSE, CLAUDE;ROSSI, JEAN-CHRISTOPHE;MEDARD, ALAIN |
分类号 |
C07C319/20;C07C321/14 |
主分类号 |
C07C319/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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