EP 4237115 A1 20230906 - METHOD AND DEVICE FOR EXTRACTING ADDITIVES FROM PLASTIC-BASED MATERIAL
Title (en)
METHOD AND DEVICE FOR EXTRACTING ADDITIVES FROM PLASTIC-BASED MATERIAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR GEWINNUNG VON ZUSATZSTOFFEN AUS KUNSTSTOFFMATERIAL
Title (fr)
PROCÉDÉ ET DISPOSITIF D'EXTRACTION D'ADDITIFS À PARTIR D'UN MATÉRIAU À BASE DE PLASTIQUE
Publication
Application
Priority
IB 2020000876 W 20201030
Abstract (en)
[origin: WO2022090754A1] The present invention concerns a method for extracting an additive from a material containing a polymer matrix and said additive comprising the steps of a) bringing into contact said material with a pressurized dense fluid in a device at a temperature T and a pressure p at which said pressurized dense fluid is saturated with said additive and b) creating in said device either a temperature gradient or a pressure gradient whereby said device presents a gradient of solubility of said additive with a zone of minimum solubility in which said additive precipitates or crystallizes and a zone of maximum solubility containing said material depleted in said additive, step a) and step b) being performed simultaneously or one after the other one. The present invention also concerns a multi- vessel device implemented during this extraction method.
IPC 8 full level
B01D 11/02 (2006.01); B01D 11/04 (2006.01)
CPC (source: EP)
B01D 9/0004 (2013.01); B01D 9/004 (2013.01); B01D 9/005 (2013.01); B01D 11/0203 (2013.01); B01D 11/0284 (2013.01); B01D 9/0059 (2013.01); B01D 11/0257 (2013.01); B01D 11/0273 (2013.01)
Citation (search report)
See references of WO 2022090754A1
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)
DOCDB simple family (application)
IB 2020000876 W 20201030; EP 20815916 A 20201030