METHOD FOR PRODUCING A CARBOXYLIC ACID AMIDE FROM A CARBONYL COMPOUND AND HYDROCYANIC ACID
    1.
    发明申请
    METHOD FOR PRODUCING A CARBOXYLIC ACID AMIDE FROM A CARBONYL COMPOUND AND HYDROCYANIC ACID 有权
    从碳化合物和羟基酸生产羧酸酰胺的方法

    公开(公告)号:US20110306784A1

    公开(公告)日:2011-12-15

    申请号:US13131462

    申请日:2009-10-29

    IPC分类号: C07C67/20 C07C231/24

    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。

    Method for producing a carboxylic acid amide from a carbonyl compound and hydrocyanic acid
    2.
    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

    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 tetramethyl glycolide
    3.
    发明授权
    Process for preparing tetramethyl glycolide 有权
    制备四甲基乙交酯的方法

    公开(公告)号:US07928251B2

    公开(公告)日:2011-04-19

    申请号:US12443784

    申请日:2007-08-30

    IPC分类号: C07D319/12

    CPC分类号: C07D319/12

    摘要: The present invention relates to a process for preparing tetramethylglycolide by heating a composition which comprises at least 50% by weight of 2-hydroxy-isobutyric acid and/or tetramethylglycolide to a temperature of at least 100° C.

    摘要翻译: 本发明涉及一种通过将包含至少50重量%的2-羟基 - 异丁酸和/或四甲基乙二醇酸的组合物加热至至少100℃的温度来制备四甲基乙交酯的方法。

    PROCESS FOR PREPARING (METH)ACRYLIC ACID
    4.
    发明申请
    PROCESS FOR PREPARING (METH)ACRYLIC ACID 失效
    制备(甲基)丙烯酸的方法

    公开(公告)号:US20100029979A1

    公开(公告)日:2010-02-04

    申请号:US12442415

    申请日:2007-08-30

    IPC分类号: C07C51/09 C07C67/00

    CPC分类号: C07C51/377 C07C57/04

    摘要: The present invention relates to a process for preparing (meth)acrylic acid, characterized in that a cyclic ester is converted to (meth)acrylic acid in the presence of a catalyst. The (meth)acrylic acid prepared can in particular be converted to (meth)acrylates.

    摘要翻译: 本发明涉及一种制备(甲基)丙烯酸的方法,其特征在于在催化剂存在下将环酯转化为(甲基)丙烯酸。 所制备的(甲基)丙烯酸特别可以转化为(甲基)丙烯酸酯。

    PROCESS FOR PREPARING TETRAMETHYL GLYCOLIDE
    5.
    发明申请
    PROCESS FOR PREPARING TETRAMETHYL GLYCOLIDE 有权
    制备四甲基甘氨酸的方法

    公开(公告)号:US20100010276A1

    公开(公告)日:2010-01-14

    申请号:US12443784

    申请日:2007-08-30

    IPC分类号: C07C29/60

    CPC分类号: C07D319/12

    摘要: The present invention relates to a process for preparing tetramethylglycolide by heating a composition which comprises at least 50% by weight of 2-hydroxy-isobutyric acid and/or tetramethylglycolide to a temperature of at least 100° C.

    摘要翻译: 本发明涉及一种通过将包含至少50重量%的2-羟基 - 异丁酸和/或四甲基乙二醇酸的组合物加热至至少100℃的温度来制备四甲基乙交酯的方法。

    Process for preparing (meth)acrylic acid
    8.
    发明授权
    Process for preparing (meth)acrylic acid 失效
    制备(甲基)丙烯酸的方法

    公开(公告)号:US08207371B2

    公开(公告)日:2012-06-26

    申请号:US12442415

    申请日:2007-08-30

    IPC分类号: C07C67/30 C07C35/00

    CPC分类号: C07C51/377 C07C57/04

    摘要: The present invention relates to a process for preparing (meth)acrylic acid, characterized in that a cyclic ester is converted to (meth)acrylic acid in the presence of a catalyst. The (meth)acrylic acid prepared can in particular be converted to (meth)acrylates.

    摘要翻译: 本发明涉及一种制备(甲基)丙烯酸的方法,其特征在于在催化剂存在下将环酯转化为(甲基)丙烯酸。 所制备的(甲基)丙烯酸特别可以转化为(甲基)丙烯酸酯。

    PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ESTERS
    10.
    发明申请
    PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ESTERS 失效
    制备α-羟基羧酸酯的方法

    公开(公告)号:US20090182167A1

    公开(公告)日:2009-07-16

    申请号:US12298034

    申请日:2007-03-28

    IPC分类号: C07C67/20 C07C67/54

    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 reactant streams comprising, as reactants, 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: 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流被加入到压力反应器中; 反应物流在压力反应器中在1巴至100巴的压力下彼此反应; 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。