Invention Application
- Patent Title: PROCESS FOR DE-POLYMERIZATION OF STYRENIC MONOMER-CONTAINING POLYMERS AND FOR RETRIEVAL OF STYRENIC MONOMERS
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Application No.: US17419063Application Date: 2020-01-07
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Publication No.: US20220081372A1Publication Date: 2022-03-17
- 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
- Priority: EP19150515.5 20190107
- International Application: PCT/EP2020/050185 WO 20200107
- Main IPC: C07C4/22
- IPC: C07C4/22 ; C08J11/12 ; C07C7/04 ; C10B53/07 ; B01D3/14 ; B01D3/42
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.
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