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公开(公告)号：JPH101455A
公开(公告)日：1998-01-06
申请号：JP2299497
申请日：1997-02-05
Applicant: BASF AG
Inventor： DAMS ALBRECHT , AICHINGER HEINRICH , HERBST HOLGER , NESTLER GERHARD , EXNER HERBERT , IFFLAND GABRIELE , WECK ALEXANDER
Abstract: PROBLEM TO BE SOLVED: To provide a method for continuously producing a (meth)acrylic acid alkyl ester, slightly causing ether of a by-product and high boiling point material in high space time yield and provide an apparatus therefor. SOLUTION: (Meth)acrylic acid is reacted with a 1-5C alkanol in (1:0.75) to (1:2) molar ratio and an organic phase from a rectifier III above a reaction zone is returned to the rectifier and water phase is removed from the system and water is added to a reaction mixture discharged from the reaction zone and the reaction mixture is fed to the rectifier I and separated into a product II containing residual (meth)acrylic acid and a product I containing residual alkanol and water in the rectifier I and the product 11 is returned to the reaction zone and the product from the rectifier I is separated into a (meth)acrylic acid alkyl ester-containing organic phase and water phase and the organic phase is fed to the rectifier II and the residual alkanol is separated from the (meth)acrylic acid alkyl ester and returned to the reaction zone.
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公开(公告)号：JPH101454A
公开(公告)日：1998-01-06
申请号：JP2294797
申请日：1997-02-05
Applicant: BASF AG
Inventor： IFFLAND GABRIELE , DAMS ALBRECHT , WECK ALEXANDER , AICHINGER HEINRICH , HERBST HOLGER , NESTLER GERHARD , EXNER HERBERT , SCHMIDT WILLI , GEISENDOERFER MATTHIAS , DOCKNER TONI
Abstract: PROBLEM TO BE SOLVED: To avoid production of ether which is a by-product from an alkanol in a method for continuously producing an alkyl ester of a (meth)acrylic acid by reacting (meth)acrylic acid with a 1-8C monohydric alkanol in a reaction zone in the presence of an acid esterification catalyst, discharging a product mixture containing the resultant alkyl (meth)acrylate, the catalyst and a by- product having higher boiling point than the alkyl (meth)acrylate and subjecting the alkyl (meth)acrylate to separation by distillation in a separation zone from the mixture. SOLUTION: A product mixture from a reaction zone is fed to a rectifier I and the product mixture discharged in the apparatus is separated into one or more products I containing an alkyl ester of (meth)acrylic acid and product II containing a catalyst by rectification and the product I is fed to other rectifier II and an alkyl ester of (meth)acrylic acid is separated by rectification in the apparatus.
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公开(公告)号：WO9805622A2
公开(公告)日：1998-02-12
申请号：PCT/EP9704214
申请日：1997-08-01
Applicant: BASF AG , HEIDA BERND , THIESSEN FRITZ , HAMMON ULRICH , DAMS ALBRECHT
Inventor： HEIDA BERND , THIESSEN FRITZ , HAMMON ULRICH , DAMS ALBRECHT
Abstract: In the production process for acrylic acid through catalytic vapour-phase oxidation of propene, acrylic acid is separated from the vapour-phase oxidation reaction mixture by means of an absorbing agent containing diphenyl, diphenyl ether or dimethyl phthalate and is also extracted from the vapour-phase oxidation acidic water by means of a solvent containing diphenyl, diphenyl ether or dimethyl phthalate.
Abstract translation: 在通过丙烯的气相催化氧化生产丙烯酸的方法中，丙烯酸是从气相氧化的反应混合物中含有二苯基，二苯醚或邻苯二甲酸二甲酯，并进一步，丙烯酸从气相氧化的酸性水吸收剂的装置由联苯，二苯醚或邻苯二甲酸二甲酯的方法分离 含有萃取溶剂。
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公开(公告)号：BR9703409A
公开(公告)日：1999-01-05
申请号：BR9703409
申请日：1997-05-27
Applicant: BASF AG
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公开(公告)号：ID17416A
公开(公告)日：1997-12-24
申请号：ID972713
申请日：1997-08-05
Applicant: BASF AG
Inventor： HEIDA BERND , THIESSEN FRITZ , HAMMON ULRICH , DAMS ALBRECHT
Abstract: PCT No. PCT/EP97/04214 Sec. 371 Date Feb. 4, 1999 Sec. 102(e) Date Feb. 4, 1999 PCT Filed Aug. 1, 1997 PCT Pub. No. WO98/05622 PCT Pub. Date Feb. 12, 1998A process for isolating acrylic acid forward during catalytic gas phase oxidation of propene, which entails separating acrylic acid from the gas phase oxidation reaction using an absorbent containing biphenyl, diphenyl ether or dimethyl phthalate; and extracting acrylic acid from acid water of the gas phase reaction with a solvent containing biphenyl, diphenyl ether or dimethyl phthalate.
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Patent Agency Ranking
公开(公告)号：MX9700899A
公开(公告)日：1997-08-30
申请号：MX9700899
申请日：1997-02-04
Applicant: BASF AG
Inventor： DAMS ALBRECHT , AICHINGER HEINRICH , HERBST HOLGER , NESTLER GERHARD , EXNER HERBERT , IFFLAND GABRIELE , WECK ALEXANDER
Abstract: En un proceso y un aparato para la preparacion continua de ésteres de alquilo del ácido (met)acrílico haciendo reaccionar el ácido (met)acrílico con alcanoles que tienen de 1 a 5 átomos de carbono, en una fase homogénea líquida exenta de solvente a temperatura elevada y en presencia de un catalizador de esterificacion de ácido en donde el ácido (met)acrílico, el alcanol y el catalizador se alimentan a una zona de reaccion, el agua formada se remueve mediante rectificacion durante un tiempo de permanencia como un constituyente de una mezcla que comprende alcanol en una unidad de rectificacion sobrepuesta en la zona de reaccion, el material destilado obtenido de esta manera se separa en una fase orgánica que comprende alcanol y una fase acuosa que comprende agua, la fase orgánica se hace regresar a la unidad de rectificacion, la mezcla de reaccion se descarga desde la zona de reaccion y se transporta hacia una zona de separacion de destilacion que comprende unidades de rectificacion adicionales y en la ultima, el (met)acrilato de alquilo formado se separa mediante los pasos que se indican en la descripcion.
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公开(公告)号：ID15886A
公开(公告)日：1997-08-14
申请号：ID970347
申请日：1997-02-05
Applicant: BASF AG
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公开(公告)号：BR0317583A
公开(公告)日：2005-11-22
申请号：BR0317583
申请日：2003-12-24
Applicant: BASF AG
Inventor： THIEL JOACHIM , DAMS ALBRECHT , SCHROEDER JUERGEN
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公开(公告)号：MY116400A
公开(公告)日：2004-01-31
申请号：MYPI9700592
申请日：1997-02-18
Applicant: BASF AG
Inventor： DAMS ALBRECHT , ECK BERND , MACHHMMER OTTO , PROLL THEO
Abstract: ACRYLIC ACID OR METHACRYLIC ACID IS PURIFIED BY (A) SUBJECTING A MIXTURE COMPRISING THE ACRYLIC ACID OR METHACRYLIC ACID TO A SHARPLY DEFINED SEPARATION PROCESS ESSENTIALLY IN THE ABSENCE OF AN ORGANIC SOLVENT, WITH THE COMPOSITION OF THE PHASE IN WHICH THE ACRYLIC ACID OR METHACRYLIC ACID ACCUMULATES REMAINING ESSENTIALLY CONSTANT WHEN THE COMPOSITION OF THE OTHER PHASES PARTICIPATING IN THE MASS TRANSFER CHANGES, THEN TAKING OFF THIS PHASE AND (A) SUBJECTING AT LEAST A PART OF THE REMAINING PHASE FROM STAGE (A) TO A LESS SHARPLY DEFINED SEPARATION PROCESS AND (B) FEEDING ONE OF THE PHASES FORMED IN STAGE (B) TO THE SHARPLY DEFINED SEPARATION PROCESS IN STAGE (A).IN ADDITION, THE INVENTION PROVIDES A PROCESS FOR PREPARING ACRYLIC ACID OR METHACRYLIC ACID WHICH INCLUDES THE ABOVEMENTIONED PURIFICATION PROCESS.
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公开(公告)号：DK0795535T3
公开(公告)日：2001-11-19
申请号：DK97101728
申请日：1997-02-04
Applicant: BASF AG
Inventor： DAMS ALBRECHT , AICHINGER HEINRICH , NESTLER GERHARD , EXNER HERBERT , IFFLAND GABRIELE , WECK ALEXANDER , HERBST HOLGER
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