EP 1756208 A1 20070228 - METHOD FOR SEPARATING AMMONIA AND WATER FROM MIXTURES, ARISING DURING THE PRODUCTION OF POLYAMIDES
Title (en)
METHOD FOR SEPARATING AMMONIA AND WATER FROM MIXTURES, ARISING DURING THE PRODUCTION OF POLYAMIDES
Title (de)
VERFAHREN ZUR ABTRENNUNG VON AMMONIAK UND WASSER AUS GEMISCHEN, DIE BEI DER HERSTELLUNG VON POLYAMIDEN ENTSTEHEN
Title (fr)
PROCEDE DE SEPARATION D'AMMONIAC ET D'EAU DANS DES MELANGES PRODUITS LORS DE LA FABRICATION DE POLYAMIDES
Publication
Application
Priority
- EP 2005005833 W 20050531
- DE 102004027022 A 20040602
Abstract (en)
[origin: WO2005118692A1] The invention relates to a method for the distillative separation of ammonia and water from mixtures arising during the production of polyamides, said mixture containing a lactam and/or diamines and, optionally, an aminonitrile and/or dinitrile in addition to cyclopentanones as foreign substances. Said method consists of two steps: 1) the mixture is distilled at 11 - 35 bars, resulting in the production of water, ammonia and cyclopentanone as overhead products (K1), and water, lactam and/or diamines and, optionally, aminonitrile and/or dinitrile, as base products (S1), and 2) K1 is distilled at 11 - 35 bars, resulting in the production of ammonia and cyclopentanone as an overhead product, and water as a base product (S2).
IPC 8 full level
C08J 11/06 (2006.01); B01D 3/14 (2006.01); B01D 5/00 (2006.01); C01C 1/02 (2006.01); C01C 1/10 (2006.01); C02F 1/04 (2006.01); C08G 69/04 (2006.01); C08G 69/16 (2006.01); C08G 69/28 (2006.01); C08J 11/02 (2006.01)
CPC (source: EP US)
B01D 3/14 (2013.01 - EP US); B01D 5/0036 (2013.01 - EP US); C01C 1/10 (2013.01 - EP US); C08G 69/04 (2013.01 - EP US); C08G 69/16 (2013.01 - EP US); C08G 69/28 (2013.01 - EP US); C08J 11/06 (2013.01 - EP US); Y02W 30/62 (2015.05 - EP US)
Citation (search report)
See references of WO 2005118692A1
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005118692 A1 20051215; AR 048981 A1 20060614; BR PI0511648 A 20080102; CA 2565503 A1 20051215; CN 1961033 A 20070509; DE 102004027022 A1 20060105; EP 1756208 A1 20070228; JP 2008501810 A 20080124; TW 200613379 A 20060501; US 2007244272 A1 20071018
DOCDB simple family (application)
EP 2005005833 W 20050531; AR P050102232 A 20050531; BR PI0511648 A 20050531; CA 2565503 A 20050531; CN 200580017885 A 20050531; DE 102004027022 A 20040602; EP 05744786 A 20050531; JP 2007513833 A 20050531; TW 94118189 A 20050602; US 62822005 A 20050531