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1. 发明授权

EP0631577B1 VERFAHREN ZUR HERSTELLUNG VON VITAMIN E 失效
标题翻译：用于生产维生素E
公开(公告)号：EP0631577B1
公开(公告)日：1997-05-28
申请号：EP93906485.3
申请日：1993-03-05
申请人： BASF Aktiengesellschaft
发明人： GRAFEN, Paul , KIEFER, Hans , JAEDICKE, Hagen
IPC分类号： C07D311/72
CPC分类号： C07D311/72
摘要： A process for producing dl-α-tocopherol or dl-α-tocophenyl acetate by acid-catalysed reaction of 2,3,5-trimethyl hydroquinone (TMH) with phytol or isophytol in a solvent at high temperature and, where appropriate, the subsequent esterification of the tocopherol obtained with acetanhydride. The process is characterized by the fact that the reaction takes place in the presence of a mixture of ortho-boric acid and certain aliphatic di- or tri-carboxylic acids, preferably in the presence of a mixture of ortho-boric and oxalic acids.

2. 发明公开

EP0846027A1 DRUCKVERLUSTARME GEWEBEPACKUNGEN ODER GEWEBEÄHNLICHE PACKUNGEN MIT GEORDNETER STRUKTUR ZUR VERWENDUNG IN STOFFAUSTAUSCHKOLONNEN UND VERFAHREN ZUR REKTIFIKATION UNTER VERWENDUNG DIESER PACKUNGEN 失效
标题翻译：压降ARMS FABRIC保密，否则相似织物填料及使用传质柱和方法进行整改的有序结构中使用此包装
公开(公告)号：EP0846027A1
公开(公告)日：1998-06-10
申请号：EP96924819.0
申请日：1996-06-29
申请人： BASF AKTIENGESELLSCHAFT
发明人： BURST, Wolfram , HARTMANN, Horst , KAISER, Wulf , LAAS, Harald , GRAFEN, Paul , BOCKSTIEGEL, Bernhard , BALDENIUS, Kai-Uwe
IPC分类号： B01D3 , B01J19 , C07C17 , C07D311
CPC分类号： B01J23/8913 , B01D3/008 , B01D3/141 , B01D3/146 , B01D3/16 , B01D53/864 , B01D53/8659 , B01D53/8662 , B01D53/8668 , B01D2255/102 , B01D2255/20715 , B01D2257/2062 , B01J19/32 , B01J23/63 , B01J23/6562 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , C07C17/38 , C07D311/72 , Y02P20/154 , Y10S62/906
摘要： The invention concerns packing elements which are subject to low pressure losses for use in material-exchange column assemblies, with the internal diameter of the column and a height of between 40 and 300 mm. These packing elements consist of dimensionally stable layers (2, 3) which have an ordered structure, contact one another and are made of cloth or cloth-like material. The packing elements are characterized in that: a) the contacting, deformed layers of cloth or cloth-like material, preferably metal cloth, are arranged such that they form a plurality of narrow flow ducts, preferably almost triangular, almost rectangular, square or almost equilateral hexagonal flow ducts, the angle of inclination (1) of the teeth of the individual cloth layers (2, 3) of the packing towards the column axis being only 0 to 25°, preferably 3 to 14°; and b) in order to ensure the mechanical stability of the packing elements, wires or thin rods (4) are optionally mounted in a suitable arrangement between the cloth layers (2, 3), or the cloth layers (2, 3) are rigidly connected at some points of contact. The invention further concerns a process for obtaining pure substances from substance mixtures by rectification using the novel packing elements.

3. 发明公开

EP0837725A1 VERFAHREN ZUR GEWINNUNG REINER SUBSTANZEN AUS GEMISCHEN HOCHSIEDENDER LUFT- UND/ODER TEMPERATUREMPFINDLICHER SUBSTANZEN, DIE EINE HOHE TRENNLEISTUNG ERFORDERN, DURCH REKTIFIKATION IM FEINVAKUUM SOWIE FÜR DIESES VERFAHREN GEEIGNETE KOLONNEN 失效
标题翻译：程序对获得纯物质混合物的高沸点空气和/或温度敏感性要求高切削性能BY整改罚款和真空此过程中适当的列物质
公开(公告)号：EP0837725A1
公开(公告)日：1998-04-29
申请号：EP96924820.0
申请日：1996-06-29
申请人： BASF AKTIENGESELLSCHAFT
发明人： HARTMANN, Horst , BURST, Wolfram , KAISER, Wulf , LAAS, Harald , GRAFEN, Paul , BOCKSTIEGEL, Bernhard , BALDENIUS, Kai-Uwe
IPC分类号： B01D3 , B01J19 , C07C17 , C07D311
CPC分类号： B01D3/141 , B01D3/008 , B01D3/146 , B01D3/16 , B01J19/32 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , C07C17/38 , C07D311/72 , Y10S159/42 , Y10S261/72
摘要： The invention concerns a process for extracting pure substances from mixtures of high-boiling air and/or temperature-sensitive substances which require a high separative power by rectification in a fine vacuum in columns containing metal cloth packing with an ordered structure and using channel liquid separators with 500 or more draining points/m2. The draining points are arranged at an angle of 90° to the cloth layers of the packing elements (7, 8) located immediately below the distributors. Two or a plurality of the packing elements (7, 8) below the liquid separator (6) have only a slight height which practically ensures the exclusion of air. These packing elements are shaped such that, during rectification, no heat can be exchanged through the column wall. The invention also concerns the packing columns used for this process and the use of this process and this column for the distillative fine-purification of vitamin E acetate.

4. 发明授权

EP0846027B1 DRUCKVERLUSTARME GEWEBEPACKUNGEN ODER GEWEBEÄHNLICHE PACKUNGEN MIT GEORDNETER STRUKTUR ZUR VERWENDUNG IN STOFFAUSTAUSCHKOLONNEN UND VERFAHREN ZUR REKTIFIKATION UNTER VERWENDUNG DIESER PACKUNGEN 失效
标题翻译：压降ARMS FABRIC保密，否则相似织物填料及使用传质柱和方法进行整改的有序结构中使用此包装
公开(公告)号：EP0846027B1
公开(公告)日：1999-10-06
申请号：EP96924819.4
申请日：1996-06-29
申请人： BASF AKTIENGESELLSCHAFT
发明人： BURST, Wolfram , HARTMANN, Horst , KAISER, Wulf , LAAS, Harald , GRAFEN, Paul , BOCKSTIEGEL, Bernhard , BALDENIUS, Kai-Uwe
IPC分类号： B01J19/32 , B01D3/10
CPC分类号： B01J23/8913 , B01D3/008 , B01D3/141 , B01D3/146 , B01D3/16 , B01D53/864 , B01D53/8659 , B01D53/8662 , B01D53/8668 , B01D2255/102 , B01D2255/20715 , B01D2257/2062 , B01J19/32 , B01J23/63 , B01J23/6562 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32272 , B01J2219/32408 , B01J2219/32416 , B01J2219/326 , C07C17/38 , C07D311/72 , Y02P20/154 , Y10S62/906
摘要： The invention concerns packing elements which are subject to low pressure losses for use in material-exchange column assemblies, with the internal diameter of the column and a height of between 40 and 300 mm. These packing elements consist of dimensionally stable layers (2, 3) which have an ordered structure, contact one another and are made of cloth or cloth-like material. The packing elements are characterized in that: a) the contacting, deformed layers of cloth or cloth-like material, preferably metal cloth, are arranged such that they form a plurality of narrow flow ducts, preferably almost triangular, almost rectangular, square or almost equilateral hexagonal flow ducts, the angle of inclination (1) of the teeth of the individual cloth layers (2, 3) of the packing towards the column axis being only 0 to 25°, preferably 3 to 14°; and b) in order to ensure the mechanical stability of the packing elements, wires or thin rods (4) are optionally mounted in a suitable arrangement between the cloth layers (2, 3), or the cloth layers (2, 3) are rigidly connected at some points of contact. The invention further concerns a process for obtaining pure substances from substance mixtures by rectification using the novel packing elements.

5. 发明公开

EP0882036A1 VERFAHREN ZUR HERSTELLUNG VON DL-ALPHA-TOCOPHEROL ODER DL-ALPHA-TOCOPHERYLACETAT 失效
标题翻译：用于生产DL-α-生育酚或DL-α-生育酚乙酸酯
公开(公告)号：EP0882036A1
公开(公告)日：1998-12-09
申请号：EP97901601.0
申请日：1997-01-24
申请人： BASF AKTIENGESELLSCHAFT
发明人： JAEDICKE, Hagen , GRAFEN, Paul , LAAS, Harald
IPC分类号： C07D311
CPC分类号： C07D311/72
摘要： A method is disclosed of producing d1-α-tocopherol or d1-α-tocopheryl acetate by acid catalysed reaction of 2,3,5-trimethyl hydroquinone (TMH) with phytol or isophytol (IP) in a solvent at raised temperature and, where appropriate, subsequent esterification of the tocopherol thus obtained with acetic anhydride. The method is characterised in that the reaction is carried out in an optionally substituted cyclic five-ring carbonate such as 1,2-propylene carbonate, or in an optionally substituted five-ring lactone such as η-butyrolactone, as the solvent at temperatures of between 50 and 200 °C. The reaction works particularly well if, following the reaction of TMH and phytol or IP, the tocopherol which separates out as an upper phase as the reaction mixture cools and/or the reaction mixture is extracted using a suitable aliphatic hydrocarbon, the tocopherol is isolated by distillation from the extract, and the separated cyclic carbonate or η-lactone which can contain excess TMH and acidic catalyst is reused as solvent. In many cases, it has been shown to be advantageous to carry out the reaction of TMH with phytol or IP with removal of the water as azeotrope, using a suitable hydrocarbon and/or in the presence of a mixture of ortho-boric acid with oxalic acid, tartaric acid or citric acid, or alternatively in the presence of BF3 etherate as the acidic catalyst. Surprisingly, the five-ring carbonates and five-ring lactones prove to have sufficient stability under the reaction conditions and suitable solvent characteristics to permit the process to be carried out continuously.

6. 发明公开

EP0631577A1 VERFAHREN ZUR HERSTELLUNG VON VITAMIN E 失效
标题翻译：用于生产维生素E.
公开(公告)号：EP0631577A1
公开(公告)日：1995-01-04
申请号：EP93906485.0
申请日：1993-03-05
申请人： BASF Aktiengesellschaft
发明人： GRAFEN, Paul , KIEFER, Hans , JAEDICKE, Hagen
IPC分类号： B01J31 , C07B61 , C07D311
CPC分类号： C07D311/72
摘要： A process for producing dl-α-tocopherol or dl-α-tocophenyl acetate by acid-catalysed reaction of 2,3,5-trimethyl hydroquinone (TMH) with phytol or isophytol in a solvent at high temperature and, where appropriate, the subsequent esterification of the tocopherol obtained with acetanhydride. The process is characterized by the fact that the reaction takes place in the presence of a mixture of ortho-boric acid and certain aliphatic di- or tri-carboxylic acids, preferably in the presence of a mixture of ortho-boric and oxalic acids.

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