Evonik Roehm Gmbh

Evonik Operations Gmbh

Rohm Gmbh

Evonik Rohm Gmbh

Evonik Industries Ag

Secar Technologie Gmbh

Arnim Kraatz

Kay Bernhard

Sebastian Buehler

Denis Holleyn

Karl-Heinz Semlitsch

Matthias Alexander Roth

Jorge Pinto

Joern Daniel Suendermann

Dieter Schlager

Rainer Zimmermann

Ina Piotrowski

Sebastian BÜHLER

Jörn Daniel SÜNDERMANN

Sebastian Buhler

Rainer (deceased) Zimmermann

Jorn Daniel Sundermann

Axel Zajonz

The invention relates to a process for producing complex, mould-foamed rigid foam materials, more particularly of poly(meth)acrylimide (P(M)I) cores, preferably of polymethacrylimide (PMI) cores, which may be employed, for example, in carmaking or aircraft construction. A feature of the process is that through use of a particulate core during foam, it is possible to achieve an additional weight saving relative to foam materials or sandwich materials of the prior art.

Production of complex hollow foam or sandwich structures by means of a mold core

A disclosed process includes steps of heating a foamed material by irradiation with near infrared radiation having a wavelength between 0.78 and 1.40 &#x3bc;m to form a heated material, forming the heated material with a forming tool to obtain a formed material, and cooling the formed material and demolding to obtain a final workpiece. The foamed material may be constructed as a composite ply construction including an outer material and a foamed core between the outer material. The foamed material may contain a poly(meth)acrylimde, a polypropylene or a highly-crosslinked polyurethane.

Shaping process for PMI foam materials and/or composite components produced therefrom

The invention describes a method for producing a foam molding from poly(meth)acrylimide, an adhesion promoter or an adhesion promoter mixture and optional auxiliaries, comprising the following steps: The resulting foam molding has outstanding mechanical properties and is suitable for applications including as a component in the production of space, air, water and land vehicles.

Process for preparing expanded copolymers based on poly(meth)acrylimide comprising an adhesion promoter

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Darmstadt, Germany

Arnim Kraatz