公开(公告)号：BR0214543A

公开(公告)日：2004-11-03

申请号：BR0214543

申请日：2002-12-06

Applicant: BASF AG

Inventor： SIRCH TILMAN ,  KAIBEL GERD ,  WARTINI ALEXANDER ,  DERNBACH MATTHIAS

IPC: C07C29/38 ,  C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22

Abstract: Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.

公开(公告)号：BR0213258A

公开(公告)日：2004-09-28

申请号：BR0213258

申请日：2002-10-18

Applicant: BASF AG

Inventor： KOCH MICHAEL ,  WARTINI ALEXANDER ,  SIRCH TILMAN ,  DERNBACH MATTHIAS

IPC: C07C29/90 ,  C07C29/88 ,  C07C31/22

Abstract: A method for removing trialkyl ammonium formate from a methylol alkanes obtained by condensation of formaldehyde with a higher aldehyde. The invention is characterized in that trialkyl ammonium formate is decomposed at a high temperature using catalysts containing at least one metal from groups 8-12 of the classification of elements in the presence of gas containing hydrogen. The method makes it possible to separate trialkyl ammonium formate according to the organic Cannizzaro method and according to the hydrogenation method.

公开(公告)号：AU2003299298A8

公开(公告)日：2004-07-09

申请号：AU2003299298

申请日：2003-12-03

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  SIRCH TILMAN ,  HAUNERT ANDREA ,  KRUG THOMAS ,  STUER WOLFRAM ,  ROPER MICHAEL

IPC: C07C29/17 ,  C07C69/593 ,  C07C31/20 ,  C07C67/347 ,  C07C29/149

Abstract: Production of 1,6-hexanediol of purity at least 99.5 % comprises: (1) catalytically dimerizing a 1-8C acrylic acid ester in presence of rhodium compounds to a mixture mainly of 2- and 3-hexenedioic acid diesters; (2) hydrogenating the ester mixture in chromium-free mainly copper-containing catalysts; and (3) purifying the resulting diol mixture by fractional distillation.

公开(公告)号：DE10258316A1

公开(公告)日：2004-06-24

申请号：DE10258316

申请日：2002-12-13

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  KRUG THOMAS ,  MODI ANDREA ,  ROEPER MICHAEL ,  SIRCH TILMAN ,  STUEER WOLFRAM

IPC: C07C29/17 ,  C07C31/20 ,  C07C69/593 ,  B01J23/889

Abstract: Production of 1,6-hexanediol of purity at least 99.5 % comprises: (1) catalytically dimerizing a 1-8C acrylic acid ester in presence of rhodium compounds to a mixture mainly of 2- and 3-hexenedioic acid diesters; (2) hydrogenating the ester mixture in chromium-free mainly copper-containing catalysts; and (3) purifying the resulting diol mixture by fractional distillation.

公开(公告)号：DE10253752A1

公开(公告)日：2004-06-03

申请号：DE10253752

申请日：2002-11-19

Applicant: BASF AG

Inventor： MODI ANDREA ,  FISCHER ROLF-HARTMUTH ,  KRUG THOMAS ,  SIRCH TILMAN

IPC: C07C41/28 ,  C07C59/285

公开(公告)号：AU2003232807A1

公开(公告)日：2003-12-12

申请号：AU2003232807

申请日：2003-05-21

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  DERNBACH MATTHIAS ,  TISCHER GERLINDE ,  SIRCH TILMAN

IPC: C07C29/80 ,  C08G6/00 ,  C08G18/42 ,  C08G63/12 ,  C08G63/78

Abstract: The invention provides a process for preparing polyester polyols of polyhydric alcohols by mono- or polyesterification of at least one carboxylic acid having at least two acid groups and/or at least one derivative of a dicarboxylic acid with polyhydric alcohols, optionally with the addition of a catalyst, while removing the water of reaction, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.

公开(公告)号：AU2003232806A1

公开(公告)日：2003-12-12

申请号：AU2003232806

申请日：2003-05-21

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  DERNBACH MATTHIAS ,  HACKMANN CLAUS ,  SIRCH TILMAN

IPC: C07C29/38 ,  C07C31/22 ,  C08G65/26 ,  C08G65/28

Abstract: The invention provides a process for preparing polyetherols of polyhydric alcohols by reacting an alkylene oxide with the appropriate polyhydric alcohol in the presence of a base and in the presence or absence of a solvent, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.

公开(公告)号：AU2002356570A1

公开(公告)日：2003-05-26

申请号：AU2002356570

申请日：2002-11-08

Applicant: MARTIN FRIEDRICH GEORG ,  BASF AG

Inventor： MARTIN FRIEDRICH-GEORG ,  DERNBACH MATTHIAS ,  SIRCH TILMAN ,  SCHRODER JURGEN ,  WARTINI ALEXANDER

IPC: C07C67/08 ,  C07B61/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/22 ,  C07C51/50 ,  C07C67/62 ,  C07C69/54

Abstract: (Meth)acrylates of polyhydric alcohols are prepared by reacting (meth)acrylic acid and the corresponding polyhydric alcohol in the presence of at least one acidic catalyst and, if required, at least one polymerization inhibitor and in the presence or absence of a solvent, by a process in which the polyhydric alcohol used contains less than 500 ppm of bound formaldehyde.

公开(公告)号：DE59806555D1

公开(公告)日：2003-01-16

申请号：DE59806555

申请日：1998-08-13

Applicant: BASF AG

Inventor： BERBNER HEINZ ,  ETLING HANS ,  GUENTHER ERHARD ,  SIRCH TILMAN ,  ZETTLER DIETER

IPC: B29C48/38 ,  B29C47/00 ,  B29C48/76 ,  B29C67/24 ,  C08G8/00 ,  C08G12/12 ,  C08G12/32 ,  C08G14/00 ,  B29C47/50 ,  B29C47/76

Abstract: The invention relates to a continuous process for preparing aminoplastics and/or phenolics, in which a precondensate solution is prepared in a first extruder (14), the precondensate solution is continuously fed, with addition of additives, to a second extruder (20) with partial filling in the feed section (E) and devolatilization section (G), devolatilized in the second extruder (20) and then formed to give a molding composition or an end product. The process is particularly suitable for preparing melamine resins, in particular melamine-formaldehyde resins, as well as for preparing urea-formaldehyde resins.

公开(公告)号：DE10058303A1

公开(公告)日：2002-05-29

申请号：DE10058303

申请日：2000-11-24

Applicant: BASF AG

Inventor： DERNBACH MATTHIAS ,  MAAS STEFFEN ,  OHLBACH FRANK ,  MELDER JOHANN-PETER ,  SIRCH TILMAN

IPC: C07C29/141 ,  C07C29/80 ,  C07C31/22

Abstract: Removal of trialkylammonium formate from polyhydric alcohols produced by aldolization of formaldehyde with a higher aldehyde in the presence of an amine catalyst and hydrogenation of the resulting mono- or polymethylol alkanal comprises treating the aldolization product and/or hydrogenation product with a strongly basic ion exchanger and distilling the hydrogenation product. Removal of trialkylammonium formate from polyhydric alcohols produced by aldolization of formaldehyde with a higher aldehyde in the presence of an amine catalyst and hydrogenation of the resulting mono- or polymethylol alkanal comprises treating the aldolization product and/or hydrogenation product with a strongly basic ion exchanger and distilling the hydrogenation product at a bottom temperature below 200 deg C and a pressure below 400 mbar with a short residence time to remove the trialkylammonium formate together with methanol, trialkylamine and optionally water.