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公开(公告)号：EP0755376B1
公开(公告)日：2004-07-14
申请号：EP95916254.6
申请日：1995-04-07
IPC分类号： C07C231/08
CPC分类号： C07C231/08 , C07C231/02 , Y02P20/582
摘要： This invention relates to a process for preparing amido-carboxylic acids in water wherein hydrolysis and amidation reactions are conducted simultaneously in a single vessel. The process involves three steps. The first step involves heating at a temperature of 150 DEG C-300 DEG C for 2 to 10 hours, a mixture containing water, a nitrogen containing compound selected from the group consisting of a lactam and an amino acid, and a carboxylic acid or ester. The second step involves cooling the reaction mixture to obtain a two-phase system containing an aqueous layer and an organic layer. The third step involves separating the amido-carboxylic acid containing organic layer from the aqueous layer. The presence of water aids in product isolation by phase separation and recycle of the reactants. Amido-carboxylic acids are used to make bleach activators for detergents.
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公开(公告)号：EP0859756B1
公开(公告)日：2000-04-05
申请号：EP96918109.8
申请日：1996-06-05
IPC分类号： C07C303/00 , C07C231/12
CPC分类号： C07C231/12 , C07C303/22 , C07C303/32 , Y02P20/582 , C07C309/42
摘要： This invention relates to a process for preparing amido ester compounds. The proces involves (I) forming a mixture in a reactor of a phenol derivative and an amido-carboxylic acid at a temperature which ensures at least partial solubility of the phenol derivative and the amido-carboxylic acid, and (II) adding a carboxylic anhydride incrementally to the mixture formed in Step (I) while distilling a by-product carboxylic acid from the reactor. The amido esters are useful as bleach activators.
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公开(公告)号：EP0859756A1
公开(公告)日：1998-08-26
申请号：EP96918109.0
申请日：1996-06-05
CPC分类号： C07C231/12 , C07C303/22 , C07C303/32 , Y02P20/582 , C07C309/42
摘要： This invention relates to a process for preparing amido ester compounds. The proces involves (I) forming a mixture in a reactor of a phenol derivative and an amido-carboxylic acid at a temperature which ensures at least partial solubility of the phenol derivative and the amido-carboxylic acid, and (II) adding a carboxylic anhydride incrementally to the mixture formed in Step (I) while distilling a by-product carboxylic acid from the reactor. The amido esters are useful as bleach activators.
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公开(公告)号：EP0755376A1
公开(公告)日：1997-01-29
申请号：EP95916254.0
申请日：1995-04-07
CPC分类号： C07C231/08 , C07C231/02 , Y02P20/582
摘要： This invention relates to a process for preparing amido-carboxylic acids in water wherein hydrolysis and amidation reactions are conducted simultaneously in a single vessel. The process involves three steps. The first step involves heating at a temperature of 150 °C-300 °C for 2 to 10 hours, a mixture containing water, a nitrogen containing compound selected from the group consisting of a lactam and an amino acid, and a carboxylic acid or ester. The second step involves cooling the reaction mixture to obtain a two-phase system containing an aqueous layer and an organic layer. The third step involves separating the amido-carboxylic acid containing organic layer from the aqueous layer. The presence of water aids in product isolation by phase separation and recycle of the reactants. Amido-carboxylic acids are used to make bleach activators for detergents.
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