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:
Jun. 04, 2024
Filed:
Jan. 07, 2020
Ineos Styrolution Group Gmbh, Frankfurt am Main, DE;
Norbert Niessner, Friedelsheim, DE;
Bianca Wilhelmus, Hanau, DE;
Hannes Kerschbaumer, Bad Soden am Taunus, DE;
Michiel Verswyvel, Mechelen, BE;
Petra Inghelbrecht, Laarne Kalken, BE;
Thomas W. Cochran, Channahon, IL (US);
KyungHo Shon, Yongin, KR;
Mohammed Abboud, Riverside, IL (US);
Ricardo Cuetos, Naperville, IL (US);
Hans-Dieter Schwaben, Rhodt, DE;
Jens Kathmann, Worb/Bern, CH;
Thad Urquhart, Seabrook, TX (US);
Timothy A. Brown, League City, TX (US);
Tim Wong, League City, TX (US);
Walter De Vet, BJ Gilze, NL;
Hans-Werner Schmidt, Bayreuth, DE;
Andreas Schedl, Bayreuth, DE;
Tristan Kolb, Bayreuth, DE;
INEOS STYROLUTION GROUP GMBH, Frankfurt am Main, DE;
Abstract
The invention relates to an improved process for providing purified styrenic monomers, such as styrene, from styrene-containing polymer waste. Styrene-containing waste is depolymerized in a suitable reactor, and the depolymerization products are condensed and separated in a three-step distillation process.