US Patent Issued to IFP ENERGIES NOUVELLES on Dec. 9 for "Method for obtaining a purified diester effluent by depolymerising a polyester comprising opaque polyethylene terephthalate" (French Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,296, issued on Dec. 9, was assigned to IFP ENERGIES NOUVELLES (Rueil-Malmaison, France).

"Method for obtaining a purified diester effluent by depolymerising a polyester comprising opaque polyethylene terephthalate" was invented by David Chiche (Rueil-Malmaison, France), Damien Leinekugel Le Cocq (Rueil-Malmaison, France) and Christine Bounie (Rueil-Malmaison, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for depolymerizing a polyester feedstock comprising opaque PET, which comprises: a) a conditioning step; b) a step of glycolysis, operated at between 180 and 400deg C., a residence time of from 0.1 t...