EP 4259406 A1 20231018 - METHOD FOR TREATING WASTE PLASTICS BY POLYMER DISSOLUTION AND PURIFICATION BY EXTRACTION
Title (en)
METHOD FOR TREATING WASTE PLASTICS BY POLYMER DISSOLUTION AND PURIFICATION BY EXTRACTION
Title (de)
VERFAHREN ZUR BEHANDLUNG VON KUNSTSTOFFABFÄLLEN DURCH AUFLÖSEN UND REINIGEN VON POLYMEREN DURCH EXTRAKTION
Title (fr)
PROCEDE DE TRAITEMENT DE PLASTIQUES USAGES PAR DISSOLUTION DES POLYMERES ET PURIFICATION PAR EXTRACTION
Publication
Application
Priority
- FR 2013159 A 20201214
- EP 2021083869 W 20211202
Abstract (en)
[origin: CA3198552A1] Disclosed is a method for treating a plastic feedstock, the method including: (a) a dissolution step comprising bringing the plastic feedstock into contact with a dissolution solvent, at a dissolution temperature between 100°C and 300°C and a dissolution pressure between 1 and 20.0 MPa abs. so as to dissolve at least a portion of the polymers of the plastic feedstock and obtain a crude polymer solution; (b) an extraction step of bringing the crude polymer solution into contact with an extraction solvent, at a temperature between 100°C and 300°C, a pressure between 1 and 20.0 MPa abs. and a mass ratio of the mass flow rate of the extraction solvent and the mass flow rate of the crude polymer solution between 0.05 and 20.0, to obtain an extracted polymer solution and a spent solvent; then (c) a step of recovering the polymers, so as to obtain a solvent fraction and a purified polymer fraction.
IPC 8 full level
B29B 17/02 (2006.01); C08J 11/08 (2006.01)
CPC (source: EP IL KR)
B29B 17/02 (2013.01 - EP IL KR); C08J 11/08 (2013.01 - EP IL KR); B29B 2017/0217 (2013.01 - KR); B29B 2017/0265 (2013.01 - KR); B29B 2017/0293 (2013.01 - EP IL KR); B29K 2023/06 (2013.01 - KR); B29K 2023/12 (2013.01 - KR); Y02W 30/20 (2015.05 - KR); Y02W 30/62 (2015.05 - EP IL KR)
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)
FR 3117397 A1 20220617; FR 3117397 B1 20230825; AU 2021399662 A1 20230713; AU 2021399662 A9 20240725; CA 3198552 A1 20220623; CN 116670209 A 20230829; EP 4259406 A1 20231018; IL 303665 A 20230801; JP 2023552634 A 20231218; KR 20230121090 A 20230817; MX 2023006543 A 20230616; TW 202239844 A 20221016; WO 2022128487 A1 20220623
DOCDB simple family (application)
FR 2013159 A 20201214; AU 2021399662 A 20211202; CA 3198552 A 20211202; CN 202180084210 A 20211202; EP 2021083869 W 20211202; EP 21834738 A 20211202; IL 30366523 A 20230612; JP 2023535661 A 20211202; KR 20237023197 A 20211202; MX 2023006543 A 20211202; TW 110146483 A 20211213