The present invention relates to a process for the preparation of acetal polymers, in particular of polyoxymethylene (POM) by cationic polymerization where organophosphonic and/or organophosphinic acids and/or their derivatives and/or their precursors are used as the initiator.


< Hydrophilic member, hydrophilic graft polymer, and support of planographic printing plate

< Polythiophenes and devices thereof

> Polyolefins with flame retardancy and abrasion resistance additives

> Aqueous (meth)acrylate copolymer dispersions, method for producing the same, and the use thereof

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