公开(公告)号：NO20051652L

公开(公告)日：2005-05-25

申请号：NO20051652

申请日：2005-04-04

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  PASTRE JORG ,  STUEER WOLFRAM ,  EXNER KAI MICHAEL ,  GEISSLER ELKE

IPC: C07C51/09 ,  C07C51/54 ,  C07C51/56 ,  C07C67/10

Abstract: Disclosed is a method for jointly producing (i) formic acid (III); (ii) a carboxylic acid comprising at least two carbon atoms (II) and/or the derivatives thereof; and (iii) a carboxylic acid anhydride (VII). According to said method, (a) a formic acid ester (I) is transesterfied to formic acid (III) and the corresponding carboxylic acid ester (IV) by means of a carboxylic acid comprising at least two carbon atoms (II); (b) at least one portion of the carboxylic acid ester (IV) formed in step (a) is carbonylated in order to obtain the carboxylic acid anhydride (V); and (c) at least one portion of the carboxylic acid anhydride (V) formed in step (b) is further dehydrated by means of a carboxylic acid (VI) so as to form a carboxylic acid anhydride (VII) and the carboxylic acid (II).

公开(公告)号：AT287904T

公开(公告)日：2005-02-15

申请号：AT02777242

申请日：2002-09-27

Applicant: BASF AG

Inventor： DANIEL THOMAS ,  EXNER KAI MICHAEL ,  MASSONNE KLEMENS ,  RIEGEL ULRICH ,  WEISMANTEL MATTHIAS

IPC: B65D65/02 ,  A61L15/00 ,  A61L15/60 ,  C07D265/32 ,  C08F8/30 ,  C08K5/357 ,  C08L101/14

Abstract: The invention relates to a method for gel post-crosslinking or surface post-crosslinking water-absorbing hydogels with morpholine-2,3-diones, to the post-crosslinked hydrogels and to the use thereof.

公开(公告)号：DE10257397A1

公开(公告)日：2004-06-24

申请号：DE10257397

申请日：2002-12-06

Applicant: BASF AG

Inventor： BENNETT ANDREA KAREN ,  CIPRIAN JUERGEN ,  ELLIOT MARK ,  EXNER KAI MICHAEL

IPC: A61L15/60 ,  C07C51/47 ,  C08F20/06 ,  C07C57/07

Abstract: A process for the reduction of the concentration of methoxyhydroquinone (MEHQ) in acrylic acid that is neutralized to 75-100% comprises continuous adsorption on activated carbon. An Independent claim is included for a process for the production of superabsorbers (I) by reduction of the MEHQ content by the novel process followed by polymerization, optionally with non-neutralized acrylic acid with optionally surface cross-linking.

公开(公告)号：DE10137534A1

公开(公告)日：2003-02-13

申请号：DE10137534

申请日：2001-08-01

Applicant: BASF AG

Inventor： HIBST HARTMUT ,  NOE RALF ,  EXNER KAI MICHAEL ,  DUDA MARK

IPC: C07B61/00 ,  C07D307/60 ,  C07D307/32 ,  B01J23/887 ,  B01J23/28

Abstract: Production of maleic anhydride comprises the heterogeneous-catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream with oxygen. A two-sequential-zone tubular bundle reactor is used which has heat-transfer cycles at both the inlet-side zone and the product-side zone. Production of maleic anhydride comprises the heterogeneous-catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream, with an oxygen-containing gas. The process is carried out in a two-zone tubular bundle reactor with a catalyst for oxydehydrogenation of the n-butene to 1,3-butadiene in the inlet-side zone and a catalyst for the oxidation of 1,3-butadiene to maleic anhydride on the product side and with the reactor having heat-transfer cycles at both zones.

公开(公告)号：DE102005016225A1

公开(公告)日：2006-07-06

申请号：DE102005016225

申请日：2005-04-07

Applicant: BASF AG

Inventor： EXNER KAI MICHAEL ,  PASTRE JOERG ,  WAGNER EVA ,  HAERING DIETMAR

IPC: C07C271/10 ,  C07C269/04 ,  C12P13/00

Abstract: Production of beta -hydroxy-alkyl-carbamates in a formulation comprises converting the 1,2-alkylene carbonate component with ammonia and a primary or secondary amine. The conversion is in the presence of a 1-4C alkanol at a temperature of 0-60[deg]C and an absolute pressure of 1-10 bar. Independent claims are also included for: (1) beta -hydroxy-alkyl-carbamates produced by the above process; and (2) the preparation of (meth)acrylated beta -hydroxyalkyl carbamates by enzyme catalyzed conversion of a binary mixture of structural isomer beta -hydroxy-alkyl-carbamates with a (meth)acrylate ester.

公开(公告)号：DE102004004214A1

公开(公告)日：2005-08-25

申请号：DE102004004214

申请日：2004-01-27

Applicant: BASF AG

Inventor： URBAN DIETER ,  SCHWALM REINHOLD ,  KIRSCH STEFAN ,  EXNER KAI MICHAEL ,  CENTNER ALEXANDER

IPC: C07C67/08 ,  C07C67/26 ,  C07C69/54 ,  C07C69/732 ,  C07C233/20 ,  C08L33/00 ,  C08F20/18 ,  C08F20/56 ,  C08F2/22 ,  C07C233/09 ,  C09D133/10 ,  C09J133/10

Abstract: The invention relates to a dispersion or solution of a polymer in water, organic solvents or mixtures thereof. The invention is characterised in that the polymer contains at least 0.001 mols of 3,4 dihydroxyphenyl groups (calculated at 109 g/mol) for 100 g polymer.

公开(公告)号：BR0315375A

公开(公告)日：2005-08-23

申请号：BR0315375

申请日：2003-10-21

Applicant: BASF AG

Inventor： PASTRE JOERG ,  EXNER KAI MICHAEL ,  STUER WOLFRAM ,  GEISSLER ELKE ,  MACHHAMMER OTTO

IPC: C07C51/09 ,  C07C51/54 ,  C07C51/56 ,  C07C67/10 ,  C07C53/122 ,  C07C53/124 ,  C07C63/313 ,  C07C53/02 ,  C07C69/14 ,  C07C53/12

Abstract: Disclosed is a method for jointly producing (i) formic acid (III); (ii) a carboxylic acid comprising at least two carbon atoms (II) and/or the derivatives thereof; and (iii) a carboxylic acid anhydride (VII). According to said method, (a) a formic acid ester (I) is transesterfied to formic acid (III) and the corresponding carboxylic acid ester (IV) by means of a carboxylic acid comprising at least two carbon atoms (II); (b) at least one portion of the carboxylic acid ester (IV) formed in step (a) is carbonylated in order to obtain the carboxylic acid anhydride (V); and (c) at least one portion of the carboxylic acid anhydride (V) formed in step (b) is further dehydrated by means of a carboxylic acid (VI) so as to form a carboxylic acid anhydride (VII) and the carboxylic acid (II).

公开(公告)号：CA2546307A1

公开(公告)日：2005-06-30

申请号：CA2546307

申请日：2004-12-14

Applicant: BASF AG

Inventor： LAAS HARALD ,  SZARVAS LASZLO ,  GLAS DETLEV ,  MASSONNE KLEMENS ,  EXNER KAI MICHAEL

IPC: C07C403/20 ,  C07B61/00 ,  C07C1/34 ,  C07C67/293 ,  C07C403/12

公开(公告)号：AT291017T

公开(公告)日：2005-04-15

申请号：AT02754895

申请日：2002-07-17

Applicant: BASF AG

Inventor： HIBST HARTMUT ,  NOE RALF ,  EXNER KAI MICHAEL ,  DUDA MARK

IPC: C07B61/00 ,  C07D307/60

Abstract: A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side reaction zone contains at least one catalyst which is suitable for the oxydehydrogenation of n-butenes to 1,3-butadiene and the second, product-side reaction zone contains at least one catalyst which is suitable for the oxidation of 1,3-butadiene to maleic anhydride, is carried out using a shell-and-tube reactor which has at least one heat transfer medium circuit in the region of the first, feed-side reaction zone and at least one further heat transfer medium circuit in the region of the second, product-side reaction zone.