WO2026104237 - METHOD FOR RECYCLING POLYETHYLENE TEREPHTHALATE BY GLYCOLYSIS, COMPRISING A STEP OF SEPARATING OTHER POLYMERS
National phase entry is expected:
Publication Number
WO/2026/104237
Publication Date
21.05.2026
International Application No.
PCT/EP2025/081937
International Filing Date
05.11.2025
Title **
[English]
METHOD FOR RECYCLING POLYETHYLENE TEREPHTHALATE BY GLYCOLYSIS, COMPRISING A STEP OF SEPARATING OTHER POLYMERS
[French]
PROCÉDÉ DE RECYCLAGE DE POLYÉTHYLÈNE TÉRÉPHTALATE PAR GLYCOLYSE COMPRENANT UNE ETAPE DE SEPARATION D'AUTRES POLYMERES
Applicants **
IFP ENERGIES NOUVELLES
JEPLAN, INC.
Inventors
BONNIN, Charles
CHARRA, Cyprien
CHICHE, David
FAVRE, Frederic
HAROUN, Yacine
LEINEKUGEL LE COCQ, Damien
Priority Data
FR2412564
18.11.2024
FR
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| Number of Office Actions | * |
| * | |
International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
|
* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2189 | |
| EPO | Filing, Examination, Granting | 9153 | |
| Japan | Filing, Examination, Granting | 2201 | |
| South Korea | Filing, Examination, Granting | 2112 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
20,395
Contact Us
Abstract[English]
The invention relates to a method for preparing BHET by depolymerising a plastics feedstock comprising PET and polymers other than PET, which method comprises: a) depolymerising the PET, in the presence of a diol, with a weight ratio between the amount of diol and the amount of PET contained in the feedstock between 0.3 and 8.0, the step a) comprising a reaction phase carried out at a temperature between 150 and 300°C and being carried out in a liquid reaction medium; b) dissolving the polymer other than PET, comprising mixing a solvent that is immiscible with the liquid reaction medium of step a), thus making it possible to solubilise the polymer other than PET; and b') separating the immiscible solvent resulting from step b) from the liquid reaction medium; the steps b) and b') being carried out independently during or after the depolymerisation step a), the method producing a purified effluent comprising BHET.[French]
L'invention concerne un procédé de préparation de BHET par dépolymérisation d'une charge plastique comprenant du PET et des polymères autres que le PET, comprenant : a) une dépolymérisation du PET, en présence d'un diol, avec un rapport pondéral entre la quantité de diol et la quantité de PET contenu dans la charge entre 0,3 et 8,0, ladite étape a) comprenant une phase réactionnelle opérée à une température entre 150 et 300°C et étant effectuée dans un milieu réactionnel liquide, b) une dissolution du polymère autre que le PET comprenant un mélange d'un solvant non miscible au milieu réactionnel liquide de l'étape a) permettant de solubiliser le polymère autre que le PET b') une séparation du solvant non miscible issu de l'étape b) du milieu réactionnel liquide, lesdites étapes b) et b') étant effectuées indépendamment pendant ou après l'étape a) de dépolymérisation, ledit procédé produisant un effluent purifié comprenant du BHET.