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:
Jul. 13, 2021
Filed:
Aug. 29, 2018
Applicant:
Ineos Styrolution Group Gmbh, Frankfurt am Main, DE;
Inventors:
Michiel Verswyvel, Mechelen, BE;
Norbert Niessner, Friedelsheim, DE;
Rainer Moors, Germersheim, DE;
Konrad Knoll, Mannheim, DE;
Bart Van-Den-Bossche, Bornem, BE;
Christof Camerlinck, Sleidinge, BE;
Assignee:
INEOS STYROLUTION GROUP GMBH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 297/04 (2006.01); B01J 4/00 (2006.01); B01J 19/00 (2006.01); B01J 19/18 (2006.01); C08F 2/01 (2006.01); C08F 2/08 (2006.01); C08F 2/42 (2006.01); C08F 6/06 (2006.01); C08F 112/08 (2006.01);
U.S. Cl.
CPC ...
C08F 297/044 (2013.01); B01J 4/001 (2013.01); B01J 19/0053 (2013.01); B01J 19/1812 (2013.01); C08F 2/01 (2013.01); C08F 2/08 (2013.01); C08F 2/42 (2013.01); C08F 6/06 (2013.01); C08F 112/08 (2013.01); B01J 2219/00029 (2013.01); B01J 2219/00164 (2013.01);
Abstract
Process for the preparation of styrenic polymers having an improved color stability by anionic polymerization wherein the obtained terminated polymer solution is fed to a dispersing device to which water is added, fed to a buffer vessel and then is impregnated in a static mixer by addition of further water, carbon dioxide and one or more stabilizers.