发明授权
- 专利标题： Storage-stable 2-hydroxy-4-(methylthio)butyronitrile
- 专利标题（中）： 储存稳定的2-羟基-4-（甲硫基）丁腈
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申请号： US13402032申请日： 2012-02-22
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公开(公告)号： US08546601B2公开(公告)日： 2013-10-01
- 发明人: Dieter Buss , Martin Steurenthaler , Joachim Hans Hasselbach , Michael R. Rinner , Benjamin Fonfe , Martin Koerfer , Stephan Kretz
- 申请人： Dieter Buss , Martin Steurenthaler , Joachim Hans Hasselbach , Michael R. Rinner , Benjamin Fonfe , Martin Koerfer , Stephan Kretz
- 申请人地址： DE Essen
- 专利权人： Evonik Degussa GmbH
- 当前专利权人： Evonik Degussa GmbH
- 当前专利权人地址： DE Essen
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 主分类号： C07C319/20
- IPC分类号： C07C319/20 ; C07C323/12 ; C07C323/58
摘要：
A storage stable mixture containing 86 to 97% by weight of 2-hydroxy-4-methylthiobutyronitrile, 2 to 14% by weight of water, 0.05 to 0.5% by weight of HCN and having a pH of 1 to 4, measured using a pH electrode at 23° C. is provided. A method to produce the storage stable mixture and its use in manufacture of DL-methionine or 2-hydroxy-4-methylthiobutyric acid is also provided.
公开/授权文献
- US20120215021A1 STORAGE-STABLE 2-HYDROXY-4-(METHYLTHIO)BUTYRONITRILE 公开/授权日：2012-08-23
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