EP 2616427 A1 20130724 - METHOD FOR PRODUCING ACRYLIC ACID FROM ETHANOL AND FORMALDEHYDE
Title (en)
METHOD FOR PRODUCING ACRYLIC ACID FROM ETHANOL AND FORMALDEHYDE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ACRYSLÄURE AUS ETHANOL UND FORMALDEHYD
Title (fr)
PROCÉDÉ DE PRODUCTION D'ACIDE ACRYLIQUE À PARTIR D'ÉTHANOL ET DE FORMALDÉHYDE
Publication
Application
Priority
- US 38335810 P 20100916
- DE 102010040923 A 20100916
- EP 2011065863 W 20110913
Abstract (en)
[origin: US2012071687A1] A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.
IPC 8 full level
C07C 51/373 (2006.01); C07C 51/377 (2006.01); C07C 57/04 (2006.01)
CPC (source: CN EP RU US)
C07C 51/235 (2013.01 - EP US); C07C 51/353 (2013.01 - EP US); C07C 51/373 (2013.01 - RU); C07C 51/377 (2013.01 - RU); C07C 57/04 (2013.01 - CN EP RU US); C07B 2200/05 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2012035019A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2012071687 A1 20120322; US 8507721 B2 20130813; BR 112013006305 A2 20160607; CN 103221378 A 20130724; CN 103221378 B 20150715; CN 104817450 A 20150805; DE 102010040923 A1 20120322; EP 2616427 A1 20130724; RU 2013116997 A 20141027; RU 2606623 C2 20170110; US 2013289305 A1 20131031; WO 2012035019 A1 20120322; ZA 201302644 B 20140525
DOCDB simple family (application)
US 201113232380 A 20110914; BR 112013006305 A 20110913; CN 201180055317 A 20110913; CN 201510172716 A 20110913; DE 102010040923 A 20100916; EP 11758439 A 20110913; EP 2011065863 W 20110913; RU 2013116997 A 20110913; US 201313933732 A 20130702; ZA 201302644 A 20130412