EP 2069292 A1 20090617 - METHOD FOR PRODUCING ISOCYANATES
Title (en)
METHOD FOR PRODUCING ISOCYANATES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN
Title (fr)
PROCÉDÉ DE PRÉPARATION D'ISOCYANATES
Publication
Application
Priority
- EP 2007058211 W 20070808
- EP 06119906 A 20060831
- EP 07788303 A 20070808
Abstract (en)
[origin: WO2008025659A1] The invention relates to a multistage method for the continuous production of organic, distillable isocyanates, preferably diisocyanates, more preferred aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic amines with urea and alcohols while releasing ammonia to give low-molecular monomeric urethanes, and the thermal decomposition thereof. The method is characterized in that at least part of the released ammonia is utilized.
IPC 8 full level
C07C 263/04 (2006.01); C07C 265/10 (2006.01); C07C 265/14 (2006.01)
CPC (source: EP US)
C07C 263/04 (2013.01 - EP US); C07C 2601/14 (2017.04 - EP US)
Citation (search report)
See references of WO 2008025659A1
Citation (examination)
KLAUS STEINEBRUNNER ET AL: "Verbrennung NH3-haltiger Prozessgase", CHEMIE INGENIEUR TECHNIK, vol. 67, no. 2, 1 February 1995 (1995-02-01), pages 199 - 202, XP055058399, ISSN: 0009-286X, DOI: 10.1002/cite.330670215
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 MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DE 102007039127 A1 20080306; EP 2069292 A1 20090617; JP 2010501615 A 20100121; JP 5460321 B2 20140402; US 2009275775 A1 20091105; US 8193385 B2 20120605; WO 2008025659 A1 20080306
DOCDB simple family (application)
DE 102007039127 A 20070818; EP 07788303 A 20070808; EP 2007058211 W 20070808; JP 2009526027 A 20070808; US 43808607 A 20070808