Bayer Aktiengesellschaft

Paul J Mayska

Dieter Freitag

Karsten-Josef Idel

Erhard Tresper

Volker Eckhardt

Rolf Dhein

Ludwig Bottenbruch

Hans-Dieter Block

Volker Serini

Knud Reuter

Uwe Westeppe

Gunther Weymans

Hans-Rudolf Dicke

The new aromatic ethers of the formulae ##STR1## can be used for the preparation of plastics which, in turn, can be processed further to give moulded articles, films, foils and filaments. The plastics prepared from the new aromatic ethers are distinguished by exceptional dimensional stability under heat.

Aromatic ethers

The invention relates to a new process for the production of bifunctional polyphenylene oxides bearing OH groups as functional groups at both ends of the chain.

Process for the production of bifunctional OH-terminated polyphenylene

This invention relates to a new thermally stable polyphenylene oxide (PPO) and to its use as thermoplastic material.

End capped thermally stable polyphenylene oxide (PPO)

The present invention relates to a process for molding a foamed article comprising mixing a polyphenylene sulfide resin with about 0.1 to 10% of an oligomeric sulfone carbonate as a foaming agent and with 0.1 to 2% of a basic catalyst at a temperature of about 150.degree. to 180.degree. C. and then heating the resulting mixture at a temperature of 280.degree.-350.degree. C. to affect a reaction mixture and introducing the reaction mixture into a suitable mold for producing a foamed article.

Process for holding and foaming thermoplastic polyphenylene sulphide

The present invention relates to the preparation of polyether-sulphones from polycarbonates.

Process for the preparation of polyether-sulphones

This invention relates to new polyphosphates, and to the production and use thereof.

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Krefeld, Germany

Paul J Mayska