Bayer Aktiengesellschaft

Edwin Woldenberg

Burkhard Kohler

Wolfgang Ebert

Klaus Horn

Klaus Kircher

Johann Piontek

Wolfgang Becker

Wichard Pump

A process for producing foamed articles containing thermoplastic aromatic polycarbonates is disclosed. Accordingly, thermoplastic aromatic polycarbonates are mixed with about 0.01 to 10% by weight of Al.sub.2 O.sub.3 (H.sub.2 O).sub.3 and the mixture is either extruded in an extruder at temperatures from 220.degree. C. to 320.degree. C. without application of a vacuum to produce foamed molded articles or it is injection molded in injection molding machines without application of vacuum at temperatures from 290.degree. C. to 330.degree. C. to produce molded foam articles.

Process for foaming thermoplastic polycarbonates

A process for the production of foamed films of polyethylene or ethylene vinyl acetate copolymers using metal salts of aliphatic fatty acids as additives.

Foamed polyethylene films

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Leverkusen, Germany

Edwin Woldenberg