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:
Feb. 21, 2023
Filed:
Jun. 10, 2020
Applicant:
Trinseo Europe Gmbh, Horgen, CH;
Inventors:
Gilbert Bouquet, Ghent, BE;
Fredericus Slijkerman, Terneuen, NL;
Assignee:
TRINSEO EUROPE GMBH, Horgen, CH;
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/38 (2006.01); C08F 279/02 (2006.01);
U.S. Cl.
CPC ...
C08F 4/38 (2013.01); C08F 279/02 (2013.01);
Abstract
Disclosed are styrenic polymers made by a mass or solution process, where the amount of trimer consisting of styrene and/or acrylonitrile is less than about 0.50 weight percent. Also disclosed is a method of minimizing the amount of trimer consisting of styrene and/or acrylonitrile in styrenic polymers made by a mass or solution process. The method includes the steps of lowering the temperature of the polymerization reaction mixture and including more than one initiator in the polymerization reaction mixture.