EP 4077509 A1 20221026 - IMPROVED METHOD FOR DEPOLYMERIZING A POLYESTER COMPRISING POLYETHYLENE TEREPHTHALATE
Title (en)
IMPROVED METHOD FOR DEPOLYMERIZING A POLYESTER COMPRISING POLYETHYLENE TEREPHTHALATE
Title (de)
VERBESSERTES VERFAHREN ZUR DEPOLYMERISATION EINES POLYESTERS MIT POLYETHYLENTEREPHTHALAT
Title (fr)
PROCÉDÉ AMÉLIORÉ DE DÉPOLYMÉRISATION D'UN POLYESTER COMPRENANT DU POLYÉTHYLÈNE TÉRÉPHTALATE
Publication
Application
Priority
- FR 1914994 A 20191219
- EP 2020084850 W 20201207
Abstract (en)
[origin: CA3157436A1] The invention concerns a method for depolymerizing a polyester feedstock comprising PET, said method comprising, before the step of depolymerization by glycolysis and before the step of purification of the depolymerization effluent, an improved step of conditioning of the feedstock, in which the polyester feedstock is conditioned in temperature and pressure and then mixed with a diol effluent in a static or dynamic mixer in order in particular to reduce substantially the viscosity of the feedstock.
IPC 8 full level
C08J 11/24 (2006.01); C08L 67/02 (2006.01)
CPC (source: EP KR US)
C08J 11/24 (2013.01 - EP KR US); C08J 2367/02 (2013.01 - EP KR); C08J 2367/03 (2013.01 - US); Y02W 30/62 (2015.05 - EP KR)
Citation (search report)
See references of WO 2021122095A1
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 3105235 A1 20210625; FR 3105235 B1 20221007; AU 2020409450 A1 20220609; BR 112022011735 A2 20220830; CA 3157436 A1 20210624; CN 114787259 A 20220722; CN 114787259 B 20231226; EP 4077509 A1 20221026; JP 2023506978 A 20230220; KR 20220119054 A 20220826; MX 2022006683 A 20220711; TW 202130726 A 20210816; US 2023357531 A1 20231109; WO 2021122095 A1 20210624
DOCDB simple family (application)
FR 1914994 A 20191219; AU 2020409450 A 20201207; BR 112022011735 A 20201207; CA 3157436 A 20201207; CN 202080087305 A 20201207; EP 2020084850 W 20201207; EP 20817009 A 20201207; JP 2022537557 A 20201207; KR 20227022920 A 20201207; MX 2022006683 A 20201207; TW 109144393 A 20201216; US 202017786139 A 20201207