公开(公告)号：EP1495104B1

公开(公告)日：2008-08-06

申请号：EP03712126.6

申请日：2003-04-02

申请人： BASF SE

发明人： DROHMANN, Christian ,  PETSCH, Tobias ,  KESSLER, Thomas ,  MÜLLER, Frank ,  HAMM DE BANTLEON, Elisa ,  MATHAUER, Klemens

IPC分类号： C12H1/04 ,  B01D37/02

CPC分类号： B01D39/06 ,  B01D39/04

摘要： The invention relates to the use of polymers comprising thermoplastic polymers as filtration aids and/or stabilising agent for the filtration or stabilisation of aqueous liquids.

公开(公告)号：EP1453821B1

公开(公告)日：2010-01-20

申请号：EP02785395.1

申请日：2002-11-19

申请人： BASF SE

发明人： ETTL, Roland ,  WINTER, Manfred ,  FREUND, Torsten ,  KESSLER, Thomas ,  GRIMM, Günther

IPC分类号： C07D315/00

CPC分类号： C07D315/00

摘要： The invention relates to a method for producing alkyl ketene dimers by reacting carboxylic acid chlorides with tertiary amines in a molar ratio of between 1: 1 and 1: 1.6 at temperatures of between 65 and 150 °C and with a residence time of between 1 and 30 mins in the absence of solvents. Said reaction partners are intensively mixed and the alkyl ketene dimers are separated from the reaction mixture.