专利检索 ap:("INEOS STYROLUTION GROUP GMBH") AND inv:"Walter De Vet" 第 1 页

1.

发明授权
Process for de-polymerization of styrenic monomer-containing polymers and for retrieval of styrenic monomers 有权

公开(公告)号：US11999686B2

公开(公告)日：2024-06-04

申请号：US17419063

申请日：2020-01-07

申请人： INEOS STYROLUTION GROUP GMBH

发明人： 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

IPC分类号： C07C4/22 , B01D3/14 , B01D3/42 , C07C7/04 , C08J11/12 , C10B53/07

CPC分类号： C07C4/22 , B01D3/143 , B01D3/4227 , C07C7/04 , C08J11/12 , C10B53/07 , C08J2325/06

摘要： 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.