公开(公告)号：EP2229367B1

公开(公告)日：2015-02-25

申请号：EP08859229.0

申请日：2008-12-08

Applicant: BASF SE

Inventor： SIEMER, Michael ,  DEGEN, Georg ,  GROLL, Peter

IPC: C07D233/58 ,  C07D233/60

CPC classification number: C07D233/58 ,  C07D233/60

公开(公告)号：EP2621878A1

公开(公告)日：2013-08-07

申请号：EP11766943.2

申请日：2011-09-28

Applicant: BASF SE

Inventor： DECKERT, Petra ,  GROLL, Peter ,  RUMPF, Bernd ,  HORN, Christian

IPC: C07C45/80 ,  C07C47/127

CPC classification number: C07C45/80 ,  C07C47/127

Abstract: A process for purifying an aqueous glyoxal solution comprising at least one acid by extractive acid removal, comprising the steps of i) mixing and dispersion of the aqueous glyoxal solution with an ion exchanger solution comprising 20 to 60% by weight of a tertiary amine and 80 to 40% by weight of an organic solvent which does not have unlimited miscibility with water at a temperature of 30 to 100°C, ii) phase separation and removal of the ion exchanger solution laden with the acid from the aqueous glyoxal solution at temperatures of 30 to 100°C, and iii) regeneration of the ion exchanger solution by contacting with a basic compound for neutralization of the acid and removal of the basic compound, iv) mixing and dispersion of the ion exchanger solution with water to free it of salts formed in the neutralization to obtain a dispersion of water and ion exchanger solution, v) phase separation and removal of the aqueous phase from the ion exchanger solution, and recycling of the ion exchanger solution into step i), which comprises phase separation and removal of the aqueous phase in step v) in such a way that the content of the aqueous phase of the regenerated ion exchanger solution obtained in step v) is

公开(公告)号：EP2621878B1

公开(公告)日：2016-06-01

申请号：EP11766943.2

申请日：2011-09-28

Applicant: BASF SE

Inventor： DECKERT, Petra ,  GROLL, Peter ,  RUMPF, Bernd ,  HORN, Christian

IPC: C07C45/80 ,  C07C47/127

CPC classification number: C07C45/80 ,  C07C47/127

公开(公告)号：EP2382175B1

公开(公告)日：2015-02-25

申请号：EP09797041.2

申请日：2009-12-21

Applicant: BASF SE

Inventor： DECKERT, Petra ,  GROLL, Peter ,  RUMPF, Bernd ,  HORN, Christian

IPC: C07C45/80 ,  C07C47/127

CPC classification number: C07C45/80 ,  C07C47/127

公开(公告)号：EP2382175A2

公开(公告)日：2011-11-02

申请号：EP09797041.2

申请日：2009-12-21

Applicant: BASF SE

Inventor： DECKERT, Petra ,  GROLL, Peter ,  RUMPF, Bernd ,  HORN, Christian

IPC: C07C45/80 ,  C07C47/127

CPC classification number: C07C45/80 ,  C07C47/127

Abstract: The invention relates to a method for cleaning an aqueous glyoxal solution comprising at least one acid by extractive acid separation, comprising the steps of: I) mixing an aqueous glyoxal solution with an ion exchanger solution, comprising 20 to 60 wt % of a tertiary amine and 80 to 40 wt % of an organic solvent immiscible with water at a dwell time of

公开(公告)号：EP2229367A2

公开(公告)日：2010-09-22

申请号：EP08859229.0

申请日：2008-12-08

Applicant: BASF SE

Inventor： SIEMER, Michael ,  DEGEN, Georg ,  GROLL, Peter

IPC: C07D233/58 ,  C07D233/60

CPC classification number: C07D233/58 ,  C07D233/60

Abstract: Disclosed is a method for producing 1,3-disubstituted imidazolium salts of formula I, wherein R1 and R3 independently represent an organic radical comprising 1 to 20 C atoms, R2, R4, and R5 independently represent an H atom or an organic radical comprising 1 to 20 C atoms, X represents the anion of a hydrogen acid having a minimum pK
s value of 2 (measured at 25°C and at 1 bar in water or dimethyl sulfoxide), and n represents 1, 2, or 3. Said method is characterized in that a) an α-dicarbonyl compound, an aldehyde, an amine, and the hydrogen acid of the anion X
- are reacted with each other, and b) the reaction is carried out in water along with a solvent that can be mixed with water or the mixtures thereof.