Basf Aktiengesellschaft

Basf Se Corporation

Knut Zöllner

Klaus Hahn

Jens Assmann

Marko Blinzler

Claudius Schwittay

Uwe-Johannes Lehnen

Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60&#xb0; C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.

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Mannheim, Germany

Knut Zöllner