EP 4146618 A1 20230315 - METHOD FOR BREAKING DOWN MICHAEL ADDUCTS CONTAINED IN A FLUID F AND FORMED DURING THE PREPARATION OF ACRYLIC ACID
Title (en)
METHOD FOR BREAKING DOWN MICHAEL ADDUCTS CONTAINED IN A FLUID F AND FORMED DURING THE PREPARATION OF ACRYLIC ACID
Title (de)
VERFAHREN ZUR RÜCKSPALTUNG VON IN EINER FLÜSSIGKEIT F ENTHALTENEN MICHAEL-ADDUKTEN, DIE BEI DER HERSTELLUNG VON ACRYLSÄURE GEBILDET WURDEN
Title (fr)
PROCÉDÉ DE DÉCOMPOSITION D'ADDUITS DE MICHAEL CONTENUS DANS UN FLUIDE F ET FORMÉS AU COURS DE LA PRÉPARATION D'ACIDE ACRYLIQUE
Publication
Application
Priority
- EP 20172654 A 20200504
- EP 2021060803 W 20210426
Abstract (en)
[origin: WO2021224044A1] The present invention relates to a method for breaking down Michael adducts of acrylic acid, which adducts are contained in a fluid F, in a breakdown apparatus which comprises at least one separating column K, an evaporator V and a pump P, in which method, when the viscosity of the residue R in the sump chamber of the separating column K increases in an undesired manner, the inflow of the fluid F into the breakdown apparatus is interrupted, the residue R in the sump chamber of the separating column K is diluted with a solvent 1 and cooled, and the sump chamber of the separating column K is emptied.
IPC 8 full level
C07C 57/07 (2006.01)
CPC (source: EP US)
C07C 51/44 (2013.01 - EP US)
C-Set (source: EP)
Citation (search report)
See references of WO 2021224044A1
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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021224044 A1 20211111; CN 115515923 A 20221223; EP 4146618 A1 20230315; JP 2023524756 A 20230613; US 2023174452 A1 20230608
DOCDB simple family (application)
EP 2021060803 W 20210426; CN 202180032582 A 20210426; EP 21720516 A 20210426; JP 2022567180 A 20210426; US 202117921997 A 20210426