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. 25, 2017
Filed:
Feb. 05, 2014
Covestro Deutschland Ag, Leverkusen, DE;
Hans-Juergen Thiem, Dormagen, DE;
Ingmar Hermsdorfer, Krefeld, DE;
Birgit Mannel, Muelheim an der Ruhr, DE;
Andreas Seidel, Dormagen, DE;
Eckhard Wenz, Cologne, DE;
Hans-Juergen Klankers, Leverkusen, DE;
Lars Frye, Leichlingen, DE;
Hartwig Kempkes, Overath, DE;
Covestro Deutschland AG, Leverkusen, DE;
Abstract
The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.