公开(公告)号：CA2790285A1

公开(公告)日：2011-08-25

申请号：CA2790285

申请日：2011-02-15

Applicant: BASF SE

Inventor： BAUMANN ROBERT ,  BIEL MARKUS CHRISTIAN ,  DECKERS ANDREAS ,  OFTRING ALFRED ,  RITTIG FRANK ,  STAFFEL WOLFGANG

IPC: C07C51/295 ,  C07C51/235 ,  C07C59/305 ,  C07C227/02

Abstract: The invention relates to a method for producing ether carboxylates.

公开(公告)号：DK1883623T3

公开(公告)日：2011-07-25

申请号：DK06754975

申请日：2006-05-03

Applicant: BASF SE

Inventor： OFTRING ALFRED ,  JUDAT BERND ,  RAULS MATTHIAS ,  FRIESE KATRIN

IPC: C07C253/34 ,  C07C255/24 ,  C07C255/25

公开(公告)号：AT506344T

公开(公告)日：2011-05-15

申请号：AT06754975

申请日：2006-05-03

Applicant: BASF SE

Inventor： OFTRING ALFRED ,  JUDAT BERND ,  RAULS MATTHIAS ,  FRIESE KATRIN

IPC: C07C253/34 ,  C07C255/24 ,  C07C255/25

Abstract: The invention relates to a process for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous emulsion which comprises MGDN and has an MGDN content of 3-50% by weight in a crystallizer, comprising the steps: (a) the aqueous emulsion is, starting from a temperature above the solidification point, cooled to a temperature below the solidification point, the cooling rate averaged over time not exceeding 5 K/h, until substantially the entirety of the emulsified MGDN has solidified, (b) the resulting aqueous suspension is cooled further and/or concentrated, and the cooling rate may be greater than in step (a).

公开(公告)号：DE502008001444D1

公开(公告)日：2010-11-11

申请号：DE502008001444

申请日：2008-02-27

Applicant: BASF SE

Inventor： DAHMEN KIRSTEN ,  OFTRING ALFRED ,  BAUMANN KATRIN ,  HUGO RANDOLF ,  HAHN THILO ,  MELDER JOHANN-PETER

IPC: C07C209/48 ,  C07C211/10 ,  C07C211/13 ,  C07C211/14 ,  C07C255/25

公开(公告)号：AT482923T

公开(公告)日：2010-10-15

申请号：AT08709227

申请日：2008-02-27

Applicant: BASF SE

Inventor： DAHMEN KIRSTEN ,  OFTRING ALFRED ,  BAUMANN KATRIN ,  HUGO RANDOLF ,  HAHN THILO ,  MELDER JOHANN-PETER

IPC: C07C209/48 ,  C07C211/10 ,  C07C211/13 ,  C07C211/14 ,  C07C255/25

Abstract: The invention relates to a process for preparing an ethylene amine mixture, which comprises hydrogenating an amino nitrile mixture comprising at least two α-amino nitriles in an amount of at least 5% by weight in each case in the presence of a catalyst and, if appropriate, a solvent.

公开(公告)号：DE102009002555A1

公开(公告)日：2009-10-29

申请号：DE102009002555

申请日：2009-04-22

Applicant: BASF SE

Inventor： GUZMANN MARCUS ,  RITTIG FRANK ,  OFTRING ALFRED ,  BALDENIUS KAI-UWE

IPC: C10G29/20 ,  C10G3/00

Abstract: Use of complexing agents (A) for the prevention of asphaltene and/or naphthenate-precipitation from crude oil, comprising at least one oil-soluble, at least divalent complexing agent, provided that the solubility of the complexing agent in 2-propylheptanol at room temperature is at least 50 g/kg, is claimed.

公开(公告)号：ES2312835T3

公开(公告)日：2009-03-01

申请号：ES03782412

申请日：2003-12-16

Applicant: BASF SE

Inventor： OFTRING ALFRED ,  BRAUN GEROLD

IPC: C07C253/10 ,  C07C255/46

Abstract: Procedimiento para la producción de 3-ciano-3,5,5-trimetilciclohexanona (isoforon-nitrilo) mediante la reacción de isoforona con cianuro de hidrógeno en presencia de una base como catalizador, seleccionada de cianuros alcalinos y alcalinotérreos, hidróxidos alcalinos y alcalinotérreos, óxidos alcalinos y alcalinotérreos y alcoholatos alcalinos y alcalinotérreos, obteniéndose un producto bruto de isoforon-nitrilo, y posterior destilación del producto bruto de isoforon-nitrilo, caracterizado porque antes de la destilación se añade al menos un ácido sulfónico seleccionado del grupo que consiste en ácido metanosulfónico, ácidos naftalenosulfónicos, ácidos naftalenosulfónicos alquilsustituidos y ácidos bencenosulfónicos alquilsustituidos con un resto alquilo con >_ 4 átomos de carbono.

公开(公告)号：DE50310589D1

公开(公告)日：2008-11-13

申请号：DE50310589

申请日：2003-12-16

Applicant: BASF SE

Inventor： OFTRING ALFRED ,  BRAUN GEROLD

IPC: C07C253/10 ,  C07C255/46

Abstract: The present invention relates to a process for preparing 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst to obtain a crude isophoronenitrile product, and subsequently distilling the crude isophoronenitrile product, with the addition before distillation of at least one specific sulfonic acid or specific carboxylic acid. In addition, the present invention relates to the use of a specific sulfonic acid or of a specific carboxylic acid as a neutralizing agent before distillation of a crude isophoronenitrile product which has been obtained by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst, in order to avoid precipitates in the neutralization of the base used as a catalyst with an acid.