The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 2025
Filed:
Feb. 01, 2023
Totalenergies Onetech, Courbevoie, FR;
Centre National DE LA Recherche Scientifique (Cnrs), Paris, FR;
Université Claude Bernard Lyon 1 (Ucbl), Villeurbanne, FR;
Université Jean Monnet Saint-etienne, Saint-Etienne, FR;
Institut National Des Sciences Appliquées DE Lyon (Insa Lyon), Villeurbanne, FR;
Olivier Lhost, Seneffe, BE;
Yves Trolez, Seneffe, BE;
Pascal Navez, Seneffe, BE;
Philippe Cassagnau, Villeurbanne, FR;
Karim Delage, Villeurbanne, FR;
Mohammad Abou-Taha, Villeurbanne, FR;
TOTALENERGIES ONETECH, Courbevoie, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Paris, FR;
UNIVERSITÉ CLAUDE BERNARD LYON 1 (UCBL), Villeurbanne, FR;
UNIVERSITÉ JEAN MONNET SAINT-ETIENNE, Saint-Etienne, FR;
INSTITUT NATIONAL DES SCIENCES APPLIQUÉES DE LYON, Villeurbanne, FR;
Abstract
Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300° C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460° C. in at least one hot zone of the extruder.