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    Method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid
    3.
    发明授权
    Method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid 有权
    由羰基化合物和氢氰酸制备羧酸酰胺的方法

    公开(公告)号：US08975440B2

    公开(公告)日：2015-03-10

    申请号：US13131462

    申请日：2009-10-29

    申请人： Alexander May ,  Martin Koestner ,  Joerg Becker ,  Joerg Schallenberg ,  Hermann Siegert ,  Bernd Vogel

    发明人： Alexander May ,  Martin Koestner ,  Joerg Becker ,  Joerg Schallenberg ,  Hermann Siegert ,  Bernd Vogel

    IPC分类号： C07C231/06 ,  C07C253/30 ,  C07C67/327 ,  C07C253/06 ,  C07C255/13 ,  C07C69/54 ,  C07C231/14 ,  C07C253/00

    CPC分类号： C07C231/06 ,  C07C231/065 ,  C07C231/14 ,  C07C253/00 ,  C07C233/09 ,  C07C255/16

    摘要： The invention relates to a method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid, comprising the steps of A) reacting a carbonyl compound with hydrocyanic acid to produce a hydroxycarboxylic acid nitrile, B) hydrolysis of the hydroxycarboxylic acid nitrile obtained in step A) in the presence of a catalyst comprising manganese dioxide, wherein a molar excess of carbonyl compound is used in relation to the hydrocyanic acid to react the carbonyl compound with hydrocyanic acid according to step A), and the reaction mixture obtained in step A) is not purified by distillation before the hydrolysis according to step B) is carried out. The invention furthermore relates to a method for producing alkyl(meth)acrylates from polymers, moulding compounds and moulded bodies, wherein a method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid is carried out in accordance with the method described above.

    摘要翻译： 本发明涉及一种由羰基化合物和氢氰酸制备羧酸酰胺的方法，包括以下步骤：a）使羰基化合物与氢氰酸反应生成羟基羧酸腈，B）水解得到的羟基羧酸腈 步骤A）在包含二氧化锰的催化剂存在下，其中相对于氢氰酸使用摩尔过量的羰基化合物以使羰基化合物与氢氰酸根据步骤A）反应，并将步骤A中获得的反应混合物 ）在根据步骤B）进行水解之前未经蒸馏纯化。 本发明还涉及从聚合物，成型化合物和成型体制备（甲基）丙烯酸烷基酯的方法，其中根据上述方法由羰基化合物和氢氰酸制备羧酸酰胺的方法。

    PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ACIDS
    5.
    发明申请
    PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ACIDS 审中-公开
    制备α-羟基羧酸的方法

    公开(公告)号：US20090209781A1

    公开(公告)日：2009-08-20

    申请号：US12307773

    申请日：2007-05-25

    申请人： Jochen Ackermann ,  Alexander May ,  Udo Gropp ,  Hermann Siegert ,  Bernd Vogel ,  Sönke Bröcker

    发明人： Jochen Ackermann ,  Alexander May ,  Udo Gropp ,  Hermann Siegert ,  Bernd Vogel ,  Sönke Bröcker

    IPC分类号： C07C67/20

    CPC分类号： C07C67/20 ,  C07C67/54 ,  C07C69/675

    摘要： Continuous process for preparing alpha-hydroxycarboxylic esters, in which the reactants reacted are alpha-hydroxycarboxamide with an alcohol in the presence of a catalyst to obtain a product mixture which comprises alpha-hydroxycarboxylic ester, ammonia, unconverted alpha-hydroxycarboxamide and alcohol, and catalyst; wherein a′) reactant streams comprising, as reactants, an alpha-hydroxycarboxamide, an alcohol and a catalyst are fed into a pressure reactor; b′) the reactant streams are reacted with one another in the pressure reactor at a pressure in the range of 1 bar to 100 bar; c′) the product mixture which results from step b) and comprises alpha-hydroxycarboxylic ester, unconverted alpha-hydroxycarboxamide and catalyst, and also ammonia and alcohol, is discharged from the pressure reactor; and d′) the product mixture is depleted in alcohol and ammonia by distilling off ammonia at a pressure which is constantly kept greater than 1 bar without the aid of additional stripping media. The continuous process can be employed particularly advantageously on the industrial scale.

    摘要翻译： 制备α-羟基羧酸酯的连续方法，其中反应物在催化剂存在下与醇反应为α-羟基甲酰胺，得到包含α-羟基羧酸酯，氨，未转化的α-羟基甲酰胺和醇的产物混合物，以及催化剂 ; 其中包含作为反应物的α-羟基甲酰胺，醇和催化剂的'）反应物料流进入压力反应器; b'），反应物流在压力反应器中在1巴至100巴范围内的压力下彼此反应; c'）由步骤b）得到的包含α-羟基羧酸酯，未转化的α-羟基甲酰胺和催化剂以及氨和醇的产物混合物从压力反应器中排出; 和d'），产物混合物通过在不经额外的汽提介质的帮助下恒定地保持大于1巴的压力下蒸馏出氨而蒸出醇和氨。 该连续方法可以在工业规模上特别有利地使用。

    Process for preparing alpha-hydroxycarboxylic esters
    9.
    发明授权
    Process for preparing alpha-hydroxycarboxylic esters 失效
    制备α-羟基羧酸酯的方法

    公开(公告)号：US08569539B2

    公开(公告)日：2013-10-29

    申请号：US12298034

    申请日：2007-03-28

    申请人： Alexander May ,  Bernd Vogel ,  Hermann Siegert ,  Jochen Ackermann ,  Soenke Broecker

    发明人： Alexander May ,  Bernd Vogel ,  Hermann Siegert ,  Jochen Ackermann ,  Soenke Broecker

    IPC分类号： C07C67/20

    CPC分类号： C07C67/20 ,  C07C67/54 ,  C07C69/675

    摘要： Alpha-hydroxycarboxylic esters are prepared by a continuous process in which alpha-hydroxycarboxamide is reacted with an alcohol in the presence of a catalyst to obtain a product mixture which contains alpha-hydroxycarboxylic ester, ammonia, unconverted alpha-hydroxycarboxamide and alcohol, and catalyst; wherein reactant streams containing an alpha-hydroxycarboxamide, an alcohol and a catalyst are fed into a pressure reactor. The reactant streams are reacted with one another in the pressure reactor at a pressure in the range of 1 bar to 100 bar; and the product mixture is depleted in alcohol and ammonia by distilling off ammonia at a pressure which is constantly kept greater than 1 bar without the aid of additional stripping media. The continuous process can be employed particularly advantageously on the industrial scale.

    摘要翻译： α-羟基羧酸酯通过连续方法制备，其中α-羟基羧酰胺与醇在催化剂存在下反应，得到含有α-羟基羧酸酯，氨，未转化的α-羟基甲酰胺和醇以及催化剂的产物混合物; 其中将含有α-羟基甲酰胺，醇和催化剂的反应物流进料到压力反应器中。 反应物流在压力反应器中在1巴至100巴范围内的压力下彼此反应; 并且通过在不经额外的剥离介质的帮助下，在恒定地保持大于1巴的压力下蒸馏掉氨，产物混合物就会耗尽醇和氨。 该连续方法可以在工业规模上特别有利地使用。