公开(公告)号：EP1993990B1

公开(公告)日：2011-08-17

申请号：EP07726640.1

申请日：2007-03-06

Applicant: BASF SE

Inventor： PENZEL, Ulrich ,  FRITZ, Rüdiger ,  ALLARDT, Holger ,  ADAM, Johannes ,  MERTEN, Anne-Kathrin

IPC: C07C201/16 ,  C07C205/06 ,  B01D3/14

CPC classification number: B01D3/38 ,  C07C201/16 ,  C07C205/06

Abstract: A process for the removal by distillation of dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitration of toluene by means of nitrating acid, which is characterized in that the process wastewater is brought to a pH of > 8.5, fed into a stripping column in the upper region thereof and stripped in countercurrent with steam to give a vapour stream which is laden with dinitrotoluene and a bottom stream which is depleted in dinitrotoluene compared to the process wastewater used, is proposed.

公开(公告)号：EP2035479A1

公开(公告)日：2009-03-18

申请号：EP07730178.6

申请日：2007-06-15

Applicant: BASF SE

Inventor： OSTROWSKI, Thomas ,  ADAM, Johannes ,  MECKELNBURG, Dirk ,  MAHN, Ulrike ,  JOVANOVIC, Renata ,  LÖFFLER, Achim

IPC: C08G65/00

CPC classification number: C08G65/2696

Abstract: The invention relates to a process for the continuous production of polyether alcohols via reaction of H-functional starter substances with alkylene oxides using basic catalysts, characterized in that at least one starter substance is added continuously with at least one alkylene oxide in a back-mixed reactor, and the reaction product is continuously removed from the back-mixed reactor.

公开(公告)号：EP2035479B1

公开(公告)日：2010-07-07

申请号：EP07730178.6

申请日：2007-06-15

Applicant: BASF SE

Inventor： OSTROWSKI, Thomas ,  ADAM, Johannes ,  MECKELNBURG, Dirk ,  MAHN, Ulrike ,  JOVANOVIC, Renata ,  LÖFFLER, Achim

IPC: C08G65/00

CPC classification number: C08G65/2696

公开(公告)号：EP2271693A1

公开(公告)日：2011-01-12

申请号：EP09728581.1

申请日：2009-03-31

Applicant: BASF SE

Inventor： ZOELLINGER, Michael ,  ADAM, Johannes ,  KRÄMER, Markus ,  JACOBS, Johannes ,  BEY, Oliver ,  ZEHNER, Peter ,  VAN GYSEL, Walter ,  HUANG RUOBIN, Claudia ,  KRONER, Matthias

IPC: C08G18/76 ,  C07C263/20 ,  C07C265/12

CPC classification number: C08G18/7664 ,  C08G18/6677 ,  C08G18/83 ,  C08G2101/0025 ,  C08G2101/0083

Abstract: The continuous or semi-continuous method of brightening organic polyisocyanates with ozone-containing gas, wherein treatment of the organic polyisocyanate is done using an ozone-containing gas that further comprises at least one other inert and/or reactive gas, can be carried out according to the invention in a stirred vessel with a connected storage tank in a sieve-plate column or in a packed column.

公开(公告)号：EP1993990A1

公开(公告)日：2008-11-26

申请号：EP07726640.1

申请日：2007-03-06

Applicant: BASF SE

Inventor： PENZEL, Ulrich ,  FRITZ, Rüdiger ,  ALLARDT, Holger ,  ADAM, Johannes ,  MERTEN, Anne-Kathrin

IPC: C07C201/16 ,  C07C205/06 ,  B01D3/14

CPC classification number: B01D3/38 ,  C07C201/16 ,  C07C205/06

Abstract: A process for the removal by distillation of dinitrotoluene from process wastewater from the preparation of dinitrotoluene by nitration of toluene by means of nitrating acid, which is characterized in that the process wastewater is brought to a pH of > 8.5, fed into a stripping column in the upper region thereof and stripped in countercurrent with steam to give a vapour stream which is laden with dinitrotoluene and a bottom stream which is depleted in dinitrotoluene compared to the process wastewater used, is proposed.

公开(公告)号：EP2367783B1

公开(公告)日：2013-01-09

申请号：EP09752383.1

申请日：2009-11-18

Applicant: BASF SE

Inventor： BREUNINGER, Daniel ,  ADAM, Johannes ,  SCHELLING, Heiner ,  STROEFER, Eckhard ,  KRÄMER, Markus ,  EIERMANN, Matthias ,  THIELE, Kai ,  ZOELLINGER, Michael ,  PINKOS, Rolf

IPC: C07C263/10 ,  C07C265/14 ,  C07C209/90

CPC classification number: C07C263/10 ,  C07C265/14

公开(公告)号：EP2367783A1

公开(公告)日：2011-09-28

申请号：EP09752383.1

申请日：2009-11-18

Applicant: BASF SE

Inventor： BREUNINGER, Daniel ,  ADAM, Johannes ,  SCHELLING, Heiner ,  STROEFER, Eckhard ,  KRÄMER, Markus ,  EIERMANN, Matthias ,  THIELE, Kai ,  ZOELLINGER, Michael ,  PINKOS, Rolf

IPC: C07C263/10 ,  C07C265/14 ,  C07C209/90

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing an isocyanate, comprising hydrogenation of an amimne-ciontaining mixture (Gi) in the presence of a copper containing hydrogenation catalyst to give a mixture (Gii) containing the amine and reacting the mixture (Gii) with phosgene to give a mixture (Gii) containing the isocyanate. The invention further relates to the isocyanate which may be produced by said method.