公开(公告)号：US11999686B2

公开(公告)日：2024-06-04

申请号：US17419063

申请日：2020-01-07

Applicant: INEOS STYROLUTION GROUP GMBH

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

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

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

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.

公开(公告)号：US12152099B2

公开(公告)日：2024-11-26

申请号：US17262018

申请日：2019-07-22

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Tobias Schulz ,  Wolfgang Fischer ,  Norbert Niessner ,  Christian Ruthard ,  Hannes Kerschbaumer

IPC: C08F257/02 ,  C08F2/22 ,  C08F212/08 ,  C08F220/44 ,  C08F265/06 ,  C08L25/12 ,  C08L33/20 ,  C08L51/04

Abstract: Polyacrylate graft rubber copolymer B and an impact modified thermoplastic molding composition thereof, where the graft copolymer B is composed of: B1: 50 to 70 wt.-% crosslinked acrylate polymer graft base B1 B2: 30 to 50 wt.-% graft shell B2 comprising a first layer B21 of vinylaromatic monomers, and a second layer B22 of vinylaromatic monomers B21-1 and nitrile monomers B22-2: wherein the particle diameter dw of the graft base BI is 255 to 290 nm; the fraction of B21 is 10 to 26 wt.-%; and the amount of B22-2, is 20 to 30 wt.-%.