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公开(公告)号：DE10154714A1
公开(公告)日：2002-11-07
申请号：DE10154714
申请日：2001-11-09
Applicant: BASF AG
Inventor： NESTLER GERHARD , GEISENDOERFER MATTHIAS
Abstract: Production of (meth)acrylic acid esters comprises acid catalyzed esterification of (meth)acrylic acid with the corresponding alcohol in a reaction zone equipped with a distillation unit followed by separation of the catalyst and distillation of (meth)acrylic acid product. A process for the production of (meth)acrylic acid esters by acid catalyzed esterification of (meth)acrylic acid with the corresponding alcohol in the homogeneous liquid phase in the presence of polymerization inhibitors and/or inhibitor mixtures comprises: (A) esterification in a reaction zone equipped with a distillation unit to separate the co product water together with olefin, alcohol, acetic acid ester and propionic acid ester, followed by condensation and separation into an aqueous and organic phase with; (B) transfer of the outlet from the reaction zone in step 1 to a catalyst separation step with separation into a esterification catalyst containing sump product and a (meth)acrylic acid containing head product with; (C) distillation of (meth)acrylic acid from the head product; and (D) transfer of the remaining (meth)acrylic acid ester to a low boiling separation process to remove acetic acid ester and starting; (E) alcohol transfer of the (meth)acrylic acid ester to a distillation process to separate high b. pt. byproducts followed by a thermal and/or catalytic treatment.
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公开(公告)号：DE10127938A1
公开(公告)日：2002-07-25
申请号：DE10127938
申请日：2001-06-08
Applicant: BASF AG
Inventor： GEISENDOERFER MATTHIAS , NESTLER GERHARD , SCHROEDER JUERGEN , VANDENMERSCH HUGUES
IPC: C07B61/00 , C07C213/06 , C07C213/10 , C07C219/08 , C07C219/02 , C07C27/00 , C07B41/12 , C07D227/12 , C07D295/24
Abstract: A process for the production of basic dialkylaminoethyl(meth)acrylates by esterification of (meth)acrylic acid alkyl esters in the presence of a catalyst and distillation processing of the reaction mixture is characterized in that the residence time of the reaction mixture in the reaction zone is 1.5-3 h. A process for the production of basic dialkylaminoethyl(meth)acrylates by esterification of (meth)acrylic acid alkyl esters of formula (1) in the presence of a catalyst and distillation processing of the reaction mixture is characterized in that the residence time of the reaction mixture in the reaction zone is 1.5-3 h. R = H or methyl; and R = R minus at least one C atom. An Independent claim is also included for a process for the production of basic (meth) acrylic acid esters of formula (2) by esterification of a (meth)acrylic acid alkyl ester of formula (1) in the presence of a catalyst and distillation processing of the reaction mixture such that an inert gas or inert gas mixture is fed through the reaction zone and/or heat exchanger under reaction conditions. R = 2-12C alkyl, optionally unsaturated, substituted with at least one NR 2 group; and R = 2-6C alkyl, optionally substituted, whereby N and R may form a 5-7 membered ring.
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公开(公告)号：DE59901687D1
公开(公告)日：2002-07-18
申请号：DE59901687
申请日：1999-01-28
Applicant: BASF AG
Inventor： PAULUS WOLFGANG , GEISENDOERFER MATTHIAS
Abstract: Organic, polymeric, anionic, water-soluble flocculators are used in the phase separation of organic-aqueous systems containing essentially monomeric acrylates, diacrylates, (poly)ester- or (poly)ether-acrylates and unreacted residues of alcohols and carboxylic acids or anhydrides used for acrylate production. An Independent claim is also included for he production of acrylates by: (a) condensation of alcohol(s) with alpha , beta -unsaturated carboxylic acid(s) or anhydride(s) in organic media; and (b) washing the organic phase with an organic washing agent.
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公开(公告)号：DE10127939A1
公开(公告)日：2002-05-29
申请号：DE10127939
申请日：2001-06-08
Applicant: BASF AG
Inventor： GEISENDOERFER MATTHIAS , DAMS ALBRECHT , NESTLER GERHARD
IPC: C07B61/00 , C07C67/54 , C07C213/06 , C07C213/10 , C07C219/08 , C07D211/94 , C07C219/02 , C07C27/00 , C07B41/12 , C07D227/12 , C07D295/04
Abstract: The invention relates to a method for producing (meth)acrylic acid esters IV by means of transesterification of a (meth)acrylic acid ester I with an alcohol R OH comprising at least one more carbon atom than the alcohol constituents (R O-) in the (meth)acrylic acid ester I to be subjected to transesterification, in the presence of a catalyst or a catalyst mixture. Either essentially the (meth)acrylic acid ester I is separated and then the catalyst used is separated by distillation (catalyst separation), or the catalyst used is separated by distillation first (catalyst separation), and then essentially the (meth)acrylic acid ester I is separated, from the reaction product of the transesterification. Constituents from the mixture obtained, which have a lower boiling point than the (meth)acrylic acid ester IV, are essentially separated by distillation (separation of constituents at low boiling point), and the (meth)acrylic acid ester IV is then purified by distillation (purification by distillation).
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公开(公告)号：BR9706837A
公开(公告)日：2000-09-26
申请号：BR9706837
申请日：1997-05-27
Applicant: BASF AG
Inventor： GEISENDOERFER MATTHIAS , HERBST HOLGER , WECK ALEXANDER , NESTLER GERHARD , DOCKNER TONI , SCHMIDT WILLI
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Patent Agency Ranking
公开(公告)号：MX9700897A
公开(公告)日：1997-08-30
申请号：MX9700897
申请日：1997-02-04
Applicant: BASF AG
Inventor： IFFLAND GABRIELE , DAMS ALBRECHT , WECK ALEXANDER , AICHINGER HEINRICH , HERBST HOLGER , NESTLER GERHARD , EXNER HERBERT , SCHMIDT WILLI , GEISENDOERFER MATTHIAS
Abstract: En el proceso para la preparacion continua de ésteres de alquilo del ácido (met)acrílico, haciendo reaccionar el ácido (met)acrílico con alcanoles monohídricos que tienen de 1 a 8 átomos de carbono, en presencia de un catalizador de esterificacion de ácido en una zona de reaccion, se descarga desde la zona de reaccion una mezcla de productos que comprende el (met)acrilato de alquilo formado, el catalizador y los subproductos formados durante el curso de la esterificacion que tienen temperaturas de ebullicion más elevadas que aquella del (met)acrilato de alquilo, y desde donde se separa el (met)acrilato de alquilo mediante destilacion en una zona de separacion. La mezcla de productos descargada de la zona de reaccion se alimenta a una unidad (I) de rectificacion, en esta unidad la mezcla de productos descargada se separa mediante rectificacion en por lo menos un producto (I) que comprende el éster de alquilo del ácido (met)acrílico y un producto (II) que comprende el catalizador, el producto (I) se alimenta a una unidad (II) de rectificacion adicional y en ésta el éster de alquilo de ácido (met)acrílico se separa mediante rectificacion.
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公开(公告)号：DE19604267A1
公开(公告)日：1997-08-07
申请号：DE19604267
申请日：1996-02-06
Applicant: BASF AG
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公开(公告)号：DE19836788B4
公开(公告)日：2006-09-28
申请号：DE19836788
申请日：1998-08-13
Applicant: BASF AG
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公开(公告)号：DE10246869A1
公开(公告)日：2003-03-27
申请号：DE10246869
申请日：2002-10-08
Applicant: BASF AG
Inventor： NESTLER GERHARD , GEISENDOERFER MATTHIAS
Abstract: Process for the production of (meth)acrylic acid esters, comprises acid catalyzed esterification of (meth)acrylic acid with the corresponding alcohol, in homogeneous liquid phase, in the presence of at least one polymerization inhibitor. A process for the production of (meth)acrylic acid esters (I) by acid catalyzed esterification of (meth)acrylic acid with the corresponding alcohol, in homogeneous liquid phase, in the presence of at least one polymerization inhibitor comprises: (A) esterification in a reaction zone having at least one distillation unit for the separation of byproduct water, along with olefin, alcohol, acetic acid ester and propionic acid ester, and condensation and separation into an aqueous and an organic phase and passage of the reaction mixture from (A) to the next step; (B) a catalyst separation step for separation into an esterification catalyst containing sump product and a (meth)acrylic acid ester containing head product; (C) distillation of the head product to remove the remaining (meth)acrylic acid and passage of the (meth)acrylic acid ester to the next step; (D) a low boiling point material separation to remove acetic acid ester and starting alcohol and passage of the (meth)acrylic acid ester to the final step; (E) a high boiling point material distillation step and thermal and/or catalytic treatment of the high boiling point material stream.
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公开(公告)号：DE19941136A1
公开(公告)日：2001-03-01
申请号：DE19941136
申请日：1999-08-30
Applicant: BASF AG
Inventor： LEUBE HARTMANN F , LEIDINGER KURT , GEISENDOERFER MATTHIAS , BECK ERICH
Abstract: Production of (meth)acrylate esters by refluxing high-boiling mono- or polyhydric alcohols with (meth)acrylic acid in presence of acid catalyst, entraining agent (I). Production of (meth)acrylate esters by refluxing high-boiling mono- or polyhydric alcohols with (meth)acrylic acid in presence of acid catalyst, entraining agent (I) for water and polymerisation inhibitor, in which (I) is returned to the reaction at a rate such that the mixture boils at essentially constant temperature.
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