EP 1902086 A1 20080326 - CHEMICAL PROCESS
Title (en)
CHEMICAL PROCESS
Title (de)
CHEMISCHES VERFAHREN
Title (fr)
PROCEDE CHIMIQUE
Publication
Application
Priority
- SE 2006050188 W 20060609
- EP 05105860 A 20050630
- EP 06748028 A 20060609
Abstract (en)
[origin: WO2007004972A1] The invention relates to a process for the production of a nitrogen containing epihalohydrin polymer involving reaction of a nitrogen-containing precursor selected from the group consisting of amines, poly-amines, polyaminoamides, polyurethanes and mixtures thereof with epihalohydrin to form of a solution of said epihalohydrin polymer, the process comprising a purification step to remove organic impurities from the formed solution of the epihalohydrin polymer, said purification step comprising contacting the solution of the epihalohydrin polymer with a fluid under liquid, supercritical or near supercritical conditions to effect extraction of organic impurities from the solution of the epihalohydrin polymer to the fluid, withdrawing fluid enriched in organic impurities from the solution of the epihalohydrin polymer, and separating extracted impurities from the withdrawn fluid, wherein the fluid comprises a substance that at atmospheric pressure and room temperature (about 25°C) is gaseous. The invention also relates to a process for purifying a solution of a nitrogen containing epihalohydrin polymer.
IPC 8 full level
C08G 73/02 (2006.01); B01D 11/02 (2006.01); C08F 6/00 (2006.01)
CPC (source: EP KR)
B01D 11/02 (2013.01 - KR); B01D 11/0403 (2013.01 - EP); B01D 11/0407 (2013.01 - EP); B01D 11/043 (2013.01 - EP); B01D 11/0488 (2013.01 - EP); C08F 6/00 (2013.01 - KR); C08G 73/00 (2013.01 - KR); C08G 73/02 (2013.01 - KR); C08G 73/022 (2013.01 - EP); C08G 73/0286 (2013.01 - EP); Y02P 20/54 (2015.11 - EP)
Citation (search report)
See references of WO 2007004972A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007004972 A1 20070111; AU 2006266498 A1 20070111; AU 2006266498 B2 20100826; BR PI0613479 A2 20110111; CA 2612134 A1 20070111; CA 2612134 C 20100330; CN 101213242 A 20080702; EP 1902086 A1 20080326; JP 2008545041 A 20081211; KR 20080028446 A 20080331; NO 20080520 L 20080331; NZ 564123 A 20101029; RU 2008103316 A 20090810; RU 2399633 C2 20100920
DOCDB simple family (application)
SE 2006050188 W 20060609; AU 2006266498 A 20060609; BR PI0613479 A 20060609; CA 2612134 A 20060609; CN 200680023571 A 20060609; EP 06748028 A 20060609; JP 2008519231 A 20060609; KR 20087001805 A 20080123; NO 20080520 A 20080128; NZ 56412306 A 20060609; RU 2008103316 A 20060609