公开(公告)号：EP2379483B1

公开(公告)日：2013-06-26

申请号：EP09768101.9

申请日：2009-12-15

Applicant: BASF SE

Inventor： FRIESE, Katrin ,  DISTELDORF, Walter ,  PETERS, Jarren ,  GOLFIER, Günther

IPC: C07C67/58 ,  C07C69/00 ,  C07C69/80

CPC classification number: C07C67/58 ,  C07C67/60 ,  Y02P20/584 ,  C07C69/80

公开(公告)号：EP1883623B1

公开(公告)日：2011-04-20

申请号：EP06754975.8

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

CPC classification number: C07C253/34 ,  C07C255/24 ,  C07C255/25

Abstract: The invention relates to a method for isolating methyl glycine nitrile-N,N-diacetonitriles (MGDN) from an MGDN-containing aqueous emulsion with an MGDN content of 3 - 50% by weight in a crystallizer. The inventive method is characterized by (a) cooling the aqueous emulsion, starting from a temperature above the solidification point, to a temperature below the solidification point, the cooling rate in the temporal mean not exceeding 5 K/h, until substantially the total amount of the emulsified MGDN has solidified; and (b) continuing to cool the aqueous suspension obtained and/or concentrating it, the cooling rate being higher than that in step (a).

Abstract translation: 本发明涉及在结晶器中从MGDN含量为3-50重量％的含MGDN的含水乳液中分离甲基甘氨酸腈-N，N-二乙腈（MGDN）的方法。 本发明的方法的特征在于（a）从高于凝固点的温度开始将水性乳液冷却至低于凝固点的温度，冷却速率的时间平均值不超过5K / h，直到基本上达到总量 的乳化MGDN固化; 和（b）继续冷却所得到的含水悬浮液和/或浓缩它，冷却速率高于步骤（a）中的冷却速率。

公开(公告)号：EP2379482B1

公开(公告)日：2015-08-26

申请号：EP09799604.5

申请日：2009-12-15

Applicant: BASF SE

Inventor： PETERS, Jarren ,  DISTELDORF, Walter ,  FRIESE, Katrin ,  SCHÄFER, Thomas ,  BEY, Oliver

IPC: C07C67/08 ,  C07C69/00 ,  C07C69/80 ,  B01D3/36

CPC classification number: B01D19/0015 ,  B01D3/36 ,  B01D3/38 ,  C07C67/08 ,  C07C69/80

公开(公告)号：EP2379481B1

公开(公告)日：2015-08-26

申请号：EP09795970.4

申请日：2009-12-15

Applicant: BASF SE

Inventor： DISTELDORF, Walter ,  PETERS, Jarren ,  SCHÄFER, Thomas ,  FRIESE, Katrin ,  ÜBLER, Christoph

IPC: C07C67/08 ,  C07C69/00 ,  C07C69/80

CPC classification number: C07C67/08 ,  C07C69/80

公开(公告)号：EP2379483A1

公开(公告)日：2011-10-26

申请号：EP09768101.9

申请日：2009-12-15

Applicant: BASF SE

Inventor： FRIESE, Katrin ,  DISTELDORF, Walter ,  PETERS, Jarren ,  GOLFIER, Günther

IPC: C07C67/58 ,  C07C69/00 ,  C07C69/80

CPC classification number: C07C67/58 ,  C07C67/60 ,  Y02P20/584 ,  C07C69/80

Abstract: The invention relates to a raw ester of an esterification reaction catalyzed by a metal-containing esterification catalyst regenerated by a) mixing the raw ester at a temperature T of more than 100°C under a pressure p that is equal to or greater than the vapor pressure of water at the temperature T with an aqueous base, b) relaxing the ester-base mixture and evaporating water, c) mixing the obtained fluid phase with water forming a water-in-oil emulsion, d) distilling water out of said emulsion and e) filtering the ester. Said method results in esters having low acid value and residues accrue in easily filterable form in the solid catalyst residues.

公开(公告)号：EP2379482A1

公开(公告)日：2011-10-26

申请号：EP09799604.5

申请日：2009-12-15

Applicant: BASF SE

Inventor： PETERS, Jarren ,  DISTELDORF, Walter ,  FRIESE, Katrin ,  SCHÄFER, Thomas ,  BEY, Oliver

IPC: C07C67/08 ,  C07C69/00 ,  C07C69/80 ,  B01D3/36

CPC classification number: B01D19/0015 ,  B01D3/36 ,  B01D3/38 ,  C07C67/08 ,  C07C69/80

Abstract: The invention relates to a method for producing carboxylic acid esters by reacting a reaction mixture, comprising a carboxylic acid and/or a carboxylic acid anhydride, and an alcohol in a reaction system having one or more reactors, wherein reaction water is distilled off as an alcohol/water azeotrope with the exhaust vapor. In addition, the reaction mixture is treated with superheated alcohol vapor. The method allows the production of esters having a low acid number.

公开(公告)号：EP2379481A1

公开(公告)日：2011-10-26

申请号：EP09795970.4

申请日：2009-12-15

Applicant: BASF SE

Inventor： DISTELDORF, Walter ,  PETERS, Jarren ,  SCHÄFER, Thomas ,  FRIESE, Katrin ,  ÜBLER, Christoph

IPC: C07C67/08 ,  C07C69/00 ,  C07C69/80

CPC classification number: C07C67/08 ,  C07C69/80

Abstract: The invention relates to a method for producing carboxylic acid esters by converting a carboxylic acid or a carboxylic acid anhydride or a mixture thereof with an alcohol in a reaction system comprising one or more reactors, wherein reaction water is distilled as alcohol-water-azeotrope with the vapors, the vapors are at least partially condensed, the condensate is separated into an aqueous phase and an organic phase and said organic phase is supplied at least partially back into said reaction system. Components boiling lower than the alcohol are at least partially removed from said returned organic phase, such as wherein components boiling lower than alcohol are evaporated and/or distilled off. An enrichment in the reaction system of by-products boiling lower than alcohol is avoided. Alcohol losses can be minimized by discharge currents.