EP 2142525 A1 20100113 - METHOD FOR PRODUCING TRIOXANE FROM TRIOXYMETHYLENE GLYCOL DIMETHYL ETHER
Title (en)
METHOD FOR PRODUCING TRIOXANE FROM TRIOXYMETHYLENE GLYCOL DIMETHYL ETHER
Title (de)
VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS TRIOXYMETHYLENGLYKOLDIMETHYLETHER
Title (fr)
PROCÉDÉ DE PRODUCTION DE TRIOXANE À PARTIR D'ÉTHER DIMÉTHYLIQUE DU TRIOXYMÉTHYLÈNE GLYCOL
Publication
Application
Priority
- EP 2008053668 W 20080327
- EP 07105347 A 20070330
- EP 08718288 A 20080327
Abstract (en)
[origin: WO2008119742A1] The invention relates to a method for producing trioxane from trioxymethylene glycol dimethyl ether (POMD- ME<SUB>n=3</SUB>) by reacting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequently processing the reaction mixture by distillation. The method comprises the following steps: a) feeding trioxymethylene glycol dimethyl ether (POMDME<SUB>n=3</SUB>) or a mixture containing trioxymethylene glycol dimethyl ether to a reactor and reacting the substance in the presence of an acidic catalyst to give a mixture (a) containing trioxane, formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MG<SUB>n>1</SUB>), methanol, hemiformals (HF), methylal (POMDME<SUB>n=1</SUB>) and polyoxymethylene glycol dimethyl ether (POMDME<SUB>n>1</SUB>); b) separating the reaction mixture (a) by distillation to give a low-boiling fraction (b1) containing trioxane, formaldehyde, water, methylene glycol, methanol, hemiformal (HF<SUB>n=1</SUB>), methylal and dioxymethylene glycol dimethyl ether (POMDME<SUB>n=2</SUB>) and a high-boiling fraction (b2) containing polyoxymethylene glycols (MG<SUB>n>1</SUB>), hemiformals (HF<SUB>n>1</SUB>) and polyoxymethylene glycol dimethyl ether (POMDME<SUB>n>2</SUB>); c) separating the low-boiling fraction (b1) by distillation to give a low-boiling fraction (c1) containing formaldehyde, water, methylene glycol, methanol, hemiformal (HF<SUB>n=1</SUB>), methylal and dioxymethylene glycol dimethyl ether (POMDME<SUB>n=2</SUB>) and a high-boiling fraction (c2) containing trioxane.
IPC 8 full level
C07D 323/06 (2006.01)
CPC (source: EP US)
C07D 323/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008119742 A1 20081009; CA 2681976 A1 20081009; CN 101668754 A 20100310; EP 2142525 A1 20100113; US 2010130756 A1 20100527
DOCDB simple family (application)
EP 2008053668 W 20080327; CA 2681976 A 20080327; CN 200880012286 A 20080327; EP 08718288 A 20080327; US 59396408 A 20080327