Invention Grant
- Patent Title: Process for de-polymerization of styrenic monomer-containing polymers and for retrieval of styrenic monomers
-
Application No.: US17419063Application Date: 2020-01-07
-
Publication No.: US11999686B2Publication Date: 2024-06-04
- Inventor: Norbert Niessner , Bianca Wilhelmus , Hannes Kerschbaumer , Michiel Verswyvel , Petra Inghelbrecht , Thomas W. Cochran , KyungHo Shon , Mohammed Abboud , Ricardo Cuetos , Hans-Dieter Schwaben , Jens Kathmann , Thad Urquhart , Timothy A. Brown , Tim Wong , Walter De Vet , Hans-Werner Schmidt , Andreas Schedl , Tristan Kolb
- Applicant: INEOS STYROLUTION GROUP GMBH
- Applicant Address: DE Frankfurt am Main
- Assignee: INEOS STYROLUTION GROUP GMBH
- Current Assignee: INEOS STYROLUTION GROUP GMBH
- Current Assignee Address: DE Frankfurt am Main
- Agency: RAPHAEL BELLUM PLLC
- Agent Aaron M. Raphael
- Priority: EP 150515 2019.01.07
- International Application: PCT/EP2020/050185 2020.01.07
- International Announcement: WO2020/144165A 2020.07.16
- Date entered country: 2021-06-28
- Main IPC: C07C4/22
- IPC: C07C4/22 ; B01D3/14 ; B01D3/42 ; C07C7/04 ; C08J11/12 ; C10B53/07
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.
Public/Granted literature
Information query
