公开(公告)号：AU2003294955A1

公开(公告)日：2004-08-10

申请号：AU2003294955

申请日：2003-12-24

Applicant: BASF AG

Inventor： DAMS ALBRECHT ,  THIEL JOACHIM ,  VANDENMERSCH HUGUES ,  SCHRODER JURGEN

IPC: C07C45/78 ,  C07C45/81 ,  C07C45/82 ,  C07C51/44 ,  C07C67/54 ,  C07C57/04 ,  C07C47/22 ,  C07C69/54

Abstract: In a thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column containing sieve trays as separating internals, at least some of the sieve trays are operated above an entrainment fraction of 10% by weight.

公开(公告)号：DE10300816A1

公开(公告)日：2004-07-22

申请号：DE10300816

申请日：2003-01-10

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  VANDENMERSCH HUGUES ,  SCHROEDER JUERGEN ,  DAMS ALBRECHT

IPC: C07C45/78 ,  C07C45/81 ,  C07C45/82 ,  C07C51/44 ,  C07C67/54 ,  B01D3/14 ,  C07B63/00 ,  C07C57/075

Abstract: In a thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column containing sieve trays as separating internals, at least some of the sieve trays are operated above an entrainment fraction of 10% by weight.

公开(公告)号：MXPA03011229A

公开(公告)日：2004-02-26

申请号：MXPA03011229

申请日：2002-06-21

Applicant: BASF AG

Inventor： VANDENMERSCH HUGUES ,  VOSS HARTWIG ,  ORSTEN STEFAN ,  WULFF CHRISTIAN

IPC: C07F9/38 ,  B01D61/02

Abstract: La presente invencion se refiere a un procedimiento para la obtencion de N-fosfonometilglicina a partir de una mezcla acuosa, que contiene disueltos en la misma N-fosfonometilglicina, halogenuros de amonio, halogenuros de metales alcalinos o alcalinoterreos y eventualmente impurezas organicas, caracterizado porque: a) se ajusta el pH de la mezcla a un valor en el rango de 2 a 8, b) se realiza una separacion de la mezcla en una membrana de nanofiltracion selectiva, obteniendose un retentato mas rico en N-fosfonometilglicina y mas pobre en halogenuros y un permeato mas rico en halogenuros y mas pobre en N-fosfonometilglicina, y c) se obtiene N-fosfonometilglicina si se desea a partir del retentato. El procedimiento de acuerdo con la invencion permite la obtencion de la N-fosfonometilglicina con separacion simultanea de las sales de halogenuros.

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.

公开(公告)号：DE10063510A1

公开(公告)日：2002-07-04

申请号：DE10063510

申请日：2000-12-20

Applicant: BASF AG

Inventor： VANDENMERSCH HUGUES ,  NESTLER GERHARD ,  SCHROEDER JUERGEN

IPC: C07C67/54 ,  C07C67/08 ,  C07C67/48 ,  C07C69/54

Abstract: In the continuous production of alkyl acrylates by liquid-phase reaction of acrylic acid with 1-5C alkanols followed by work-up in a rectifier unit (III), an acrylic acid-separating column (I) and another rectifier unit (II), 0-60 wt.% of the organic phase from the first distillate (from III) is recycled to (III) and column (I) is operated with an organic reflux ratio of (0:1)-(1:1). A method for the continuous production of alkyl acrylates (AE) involves reacting acrylic acid (AA) with 1-5C alkanols in the liquid phase in presence of esterification catalyst(s), in which the acid, alkanol and catalyst are continuously fed into the reaction zone. The resulting AE is removed after a certain residence time from the top of a rectifier unit (III) above the reaction zone as a component of an azeotrope with water (or water and alkanol), together with AA. The resulting first distillate is separated into organic phase(s) (containing AE) and aqueous phase(s), part of the organic phase and the aqueous phase is transferred to an AA-separating column (I) from which an AA-enriched bottom product is removed and at least partly recycled to the reactor and a mixture of alkanol, AE and water is distilled off and condensed to form an AE-containing organic phase and an aqueous phase. Part of this organic phase is transferred to another separating zone with at least one rectifier unit (II). In this method, 0-60 wt.% of the organic phase from the first distillate is recycled to the rectifier unit (III) and the AA-separating column (I) is operated with an organic reflux ratio of (0:1)-(1:1). An Independent claim is also included for an apparatus for the continuous production of alkyl (meth)acrylates by this method, comprising a reactor (5) fitted with feed lines (10, 11, 12) for reactants and catalyst and connected to the bottom of a rectifier unit (III), the top of which is connected via a condenser (16) with a phase separator (17) which is also connected to unit (III) via a line (18) for the organic phase and to another rectifier unit (I) by other line(s) (19) for the organic and aqueous phases. The top of unit (I) is connected via a condenser (20) to a phase separator (24) which is also connected to unit (I) via lines (26) and (25) for the organic phase and the aqueous phase respectively.

公开(公告)号：DE19732291A1

公开(公告)日：1999-01-28

申请号：DE19732291

申请日：1997-07-26

Applicant: BASF AG

Inventor： FREYHOF REINHARD ,  BITTERLICH STEFAN ,  VANDENMERSCH HUGUES

IPC: B01D61/36 ,  C07D323/06

Abstract: The invention relates to a method for trioxan isolation from an aqueous mixture basically consisting of trioxan, water and formaldehyde. The method is characterized in that trioxan is withdrawn from the mixture by pervaporation and in that the trioxan enriched mixture (permeate) is separated by trioxan rectification and an azeotropic mixture of trioxan, water and formaldehyde.