Title:
METHOD FOR ROOM TEMPERATURE DEPOLYMERIZATION OF TEREPHTHALIC POLYESTERS TO TEREPHTHALATE ESTERS
Document Type and Number:
WIPO Patent Application WO/2023/194442
Kind Code:
A1
Abstract:
The present invention relates to the field of recycling materials comprising terephthalate polyester, notably polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) which are commonly used for the manufacture of single-use plastic bottles, food trays, textiles, composite material for insulation, etc. The invention also relates to a method for recycling PET to terephthalic diester and in particular to dimethyl terephthalate (DMT) in less than one hour and without a pretreatment step. Furthermore, this method does not use toxic products. It is therefore particularly advantageous from an industrial viewpoint.
Inventors:
EL MAHDI AYOUB (FR)
MEDIMAGH RAOUF (FR)
FOURDIN THÉO (FR)
MEDIMAGH RAOUF (FR)
FOURDIN THÉO (FR)
Application Number:
PCT/EP2023/058949
Publication Date:
October 12, 2023
Filing Date:
April 05, 2023
Export Citation:
Assignee:
RECYCELIT (FR)
International Classes:
C08J11/22; C08J11/24; C08J11/26
Domestic Patent References:
| WO2021126661A1 | 2021-06-24 | |||
| WO2020128218A1 | 2020-06-25 | |||
| WO2020188359A1 | 2020-09-24 | |||
| WO2007076384A2 | 2007-07-05 |
Foreign References:
| US11248103B2 | 2022-02-15 | |||
| JP2004161666A | 2004-06-10 | |||
| US9550713B1 | 2017-01-24 | |||
| US6706843B1 | 2004-03-16 | |||
| US20190256450A1 | 2019-08-22 | |||
| US20190390035A1 | 2019-12-26 |
Attorney, Agent or Firm:
IP TRUST (FR)
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