公开(公告)号：EP1824813A1

公开(公告)日：2007-08-29

申请号：EP05815770.2

申请日：2005-12-03

申请人： BASF AKTIENGESELLSCHAFT

发明人： GRAFMANS, Horst ,  MAAS, Steffen ,  WECK, Alexander ,  RÜTTER, Heinz ,  SCHULZ, Michael ,  ROSS, Karl-Heinz

IPC分类号： C07C231/02 ,  C07C233/05

CPC分类号： C07C231/02 ,  C07C233/05

摘要： A method for the production of N,N-dimethylacetamide (DMAC) by continuous reaction of methylacetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used as a methanolic solution and continuous distillatory preparation is carried out in such a way that initially methanol and optionally other low boiling substances are separated at the head of a column A and the yield from the bottom of column A is fed to column B, wherein DMAC having a purity of ≥ 99.7 % by weight is separated via a lateral outlet.

摘要翻译： 一种通过在碱性催化剂存在下使乙酸甲酯（MeOAc）与二甲胺（DMA）连续反应制备N，N-二甲基乙酰胺（DMAC）的方法，其中MeOAc用作甲醇溶液并且进行连续蒸馏制备 以这样的方式，首先将甲醇和任选的其他低沸点物质在塔A的顶部分离，将塔A的塔底产物送入塔B，其中将纯度≥99.7重量％的DMAC分离 通过侧向出口。

公开(公告)号：EP1828102A1

公开(公告)日：2007-09-05

申请号：EP05815808.0

申请日：2005-12-03

申请人： BASF AKTIENGESELLSCHAFT

发明人： GRAFMANS, Horst ,  MAAS, Steffen ,  WECK, Alexander ,  RÜTTER, Heinz ,  SCHULZ, Michael ,  ROSS, Karl-Heinz

IPC分类号： C07C231/02 ,  C07C233/05

CPC分类号： C07C231/02 ,  C07C233/05

摘要： A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.

摘要翻译： 一种通过在碱性催化剂存在下使乙酸甲酯（MeOAc）与二甲胺（DMA）连续反应制备N，N-二甲基乙酰胺（DMAC）的方法，其中MeOAc以甲醇溶液形式使用，其作为 - 通过使聚THF二乙酸酯与甲醇进行酯交换来制备聚THF。

公开(公告)号：EP1828101A1

公开(公告)日：2007-09-05

申请号：EP05814359.5

申请日：2005-12-03

申请人： BASF AKTIENGESELLSCHAFT

发明人： GRAFMANS, Horst ,  MAAS, Steffen ,  WECK, Alexander ,  RÜTTER, Heinz ,  SCHULZ, Michael ,  ROSS, Karl-Heinz

IPC分类号： C07C231/02 ,  C07C233/05

CPC分类号： C07C231/02 ,  C07C233/05

摘要： The invention relates to a method for producing N,N-dimethylacetamide (DMAC) by the continuous reaction of methyl acetate (MeOAc) with dimethyl amine (DMA) in the presence of an alkaline catalyst. Said method is characterised in that the MeOAc is in the form of a methanolic solution and that between 0.0002 and 0.09 mol catalyst per mol MeOAc is used. The reaction is carried out at a temperature ranging between 90 and 140 °C and at an absolute pressure ranging between 10 and 30 bar.