Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Birgit Mannel

Andreas Seidel

Eckhard Wenz

Michael Bierdel

Reiner Rudolf

Hans-Jürgen Thiem

Sven Hobeika

Carsten Conzen

Hans-Juergen Thiem

Ingmar Hermsdorfer

Hans-Juergen Klankers

Lars Frye

Hans-Jürgen Klankers

Hartwig Kempkes

The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.

Method for the production of ABS compositions having an improved surface

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.

Method for the production of ABS compositions having an improved surface following storage in a warm-humid environment

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Muelheim an der Ruhr, Germany

Birgit Mannel