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公开(公告)号：EP1077932A1
公开(公告)日：2001-02-28
申请号：EP99918054.0
申请日：1999-05-11
发明人： LECONTE, Philippe
IPC分类号： C07C253/30 , C07C209/48
CPC分类号： C07C253/30 , C07C209/48 , C07C211/12 , C07C255/24
摘要： The invention concerns a method for preparing aminonitrile and diamine by catalytic hydrogenating dinitrile. It consists of a method for preparing aminonitrile and diamine by catalytic hydrogenating aliphatic dinitrile having 3 to 12 carbon atoms, characterised in that the final reaction mixture, from which the catalyst has been previously separated, is acidified by adding a sufficient amount of a mineral or organic acid before it is subjected to an operation distilling the reaction products and the non-transformed dinitrile. The invention more particularly concerns the preparation of amino-6-capronitrile and hexamethylenediamine by hydrogenating adiponitrile. The amino-6-capronitrile can be hydrolysed in liquid phase or gaseous phase to lead to caprolactame. The hexamethylenediamine can be used in particular for preparing polyamide-66 by reaction with adipic acid.
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公开(公告)号：EP1060157A1
公开(公告)日：2000-12-20
申请号：EP99937924.1
申请日：1999-02-24
CPC分类号： C07C51/44 , C07C51/42 , C07C51/43 , C07C51/487 , C07C55/14
摘要： The invention concerns the treatment of reaction mixtures derived from an oxidation reaction of cyclohexane into adipic acid and more particularly the separation of the different constituents of said mixtures and the purification of the adipic acid.
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公开(公告)号：EP0846029A1
公开(公告)日：1998-06-10
申请号：EP96925817.0
申请日：1996-07-18
发明人： LECONTE, Philippe , PATOIS, Carl
CPC分类号： B01J31/2291 , B01J27/10 , B01J31/4038 , B01J38/60 , B01J2231/321 , B01J2531/824 , C07C51/42 , C07C67/38 , C22B11/048 , Y02P10/214 , Y02P20/584 , C07C57/03 , C07C69/533
摘要： A method for separating a palladium catalyst from the medium in which it dissolved is disclosed. Specifically, the method is useful for separating a palladium catalyst from a medium resulting from a butadiene hydroxycarbonylation reaction producing pentenoic acids. The method therefore comprises at least partially separating the palladium dissolved in a solution that also contains 3-pentenoic acid, and is characterised in that said solution is acidified and stirred with an aqueous hydrochloric acid solution and in that two liquid phases are produced, including an aqueous phase containing all or part of the palladium.
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公开(公告)号：EP1032558A1
公开(公告)日：2000-09-06
申请号：EP98955702.0
申请日：1998-11-19
IPC分类号： C07C253/30 , B01J10/00 , B01J19/24 , C07C209/48
CPC分类号： C07C253/30 , C07C209/48 , Y02P20/584 , C07C211/12 , C07C255/24
摘要： The invention concerns a method for hydrogenating aliphatic dinitriles at least partly into corresponding aminonitriles. More particularly, it concerns a method for continuous hydrogenation of dinitrile, at least partly into corresponding aminonitrile, in the presence of a hydrogenation catalyst non-dissolved in the reaction medium. The invention is characterised in that it is carried out in an equipment comprising continuous means separating the hydrogenate and the catalyst in a zone wherein the gas-liquid transfer is limited or nil, said separation and recycling of the catalyst being carried out in a time interval of not more than 30 minutes.
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公开(公告)号：EP0846029B1
公开(公告)日：2000-01-12
申请号：EP96925817.7
申请日：1996-07-18
发明人： LECONTE, Philippe , PATOIS, Carl
CPC分类号： B01J31/2291 , B01J27/10 , B01J31/4038 , B01J38/60 , B01J2231/321 , B01J2531/824 , C07C51/42 , C07C67/38 , C22B11/048 , Y02P10/214 , Y02P20/584 , C07C57/03 , C07C69/533
摘要： A method for separating a palladium catalyst from the medium in which it dissolved is disclosed. Specifically, the method is useful for separating a palladium catalyst from a medium resulting from a butadiene hydroxycarbonylation reaction producing pentenoic acids. The method therefore comprises at least partially separating the palladium dissolved in a solution that also contains 3-pentenoic acid, and is characterised in that said solution is acidified and stirred with an aqueous hydrochloric acid solution and in that two liquid phases are produced, including an aqueous phase containing all or part of the palladium.
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公开(公告)号：EP0914195A1
公开(公告)日：1999-05-12
申请号：EP97919434.0
申请日：1997-03-27
CPC分类号： C07C51/42 , B01D61/44 , B01J38/00 , B01J38/48 , Y02P20/584
摘要： A method for separating a catalyst from a solution containing same by membrane electrodialysis is disclosed. Specifically, the separation of a catalyst used in a homogeneous-phase molecular oxidation reaction is disclosed. According to the method for separating a homogeneous catalyst dissolved in a medium that also contains at least one aliphatic diacid, the catalyst contains cobalt and separation is achieved by membrane electrodialysis.
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公开(公告)号：EP1071657A1
公开(公告)日：2001-01-31
申请号：EP99913398.6
申请日：1999-04-13
IPC分类号： C07C253/34 , C07C255/58
CPC分类号： C07C253/34 , C07C255/58
摘要： The invention concerns a method for purifying aliphatic aminonitriles and more particularly amino-6 capronitrile, which consists more precisely in subjecting amino-6 capronitrile to hydrogenation by molecular hydrogen, in the presence of a catalyst containing at least a metal selected among palladium, platinum, ruthenium, osmium, iridium, rhodium and a promoting or preconditioning agent to improve the selectivity of hydrogenation.
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公开(公告)号：EP1089972A1
公开(公告)日：2001-04-11
申请号：EP99926540.8
申请日：1999-06-24
IPC分类号： C07D201/08
CPC分类号： C07D201/08
摘要： The invention concerns a method for evaporating aminonitrile and water in conditions limiting or eliminating the formation of heavy by-products in particular amino-carboxylic acid oligomers. To avoid said inconvenience, said method for evaporating aminonitrile and water is characterised in that the water in vapour state serves as balance gas for evaporation.
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9.发明公开PROCEDE DE REGENERATION D'UN CATALYSEUR D'HYDROGENATION PROCEDE D'HYDROGENATION DE COMPOSES COMPRENANT DES FONCTIONS NITRILES 有权对于NITRILFONKTIONELLEN CONNECTIONS的加氢的加氢催化剂和工艺的再生过程
公开(公告)号：EP1042068A1
公开(公告)日：2000-10-11
申请号：EP98963616.2
申请日：1998-12-23
IPC分类号： B01J25/04 , C07C209/48
CPC分类号： C07C253/30 , B01J25/04 , C07C209/48 , Y02P20/584 , C07C211/09 , C07C255/24
摘要： The invention concerns a method for regenerating a hydrogenation catalyst, and hydrogenation methods carried out with a catalyst comprising at least one regenerated catalyst. More particularly, it concerns a method for regenerating Raney catalysts used in total or partial hydrogenating processes of compounds comprising nitrile functions into amine functions. Said method consists in treating the spent catalyst with a basic solution and optionally in subjecting said catalyst to hydrogenation before stripping to eliminate the impurities present on the catalyst. Thus, the regenerating method enables to recuperate up to 100 % of the catalytic activity.
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公开(公告)号：EP0918741A1
公开(公告)日：1999-06-02
申请号：EP97926056.0
申请日：1997-05-29
摘要： The invention discloses a method for purifying adipic acid by crystallization or recrystallization in at least one carbolyxic acid. More precisely, it discloses an improvement in adipic acid crystallization or recrystallization, characterised in that the said crystallization or recrystallization is effected in at least one carboxylic acid with a melting point below 20 °C. The presence of carbon monoxide during crystallization or recrystallization can have a favourable effect on the adipic acid purity, in particular by reducing the content of metal catalyst traces of the adipic acid. The adipic acid purity can also be improved when the crystallization or recrystallization is effected in presence of a strong proton acid.
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