18The invention relates to a method for producing powdery antioxidant containing coating agents from aqueous polymer dispersions containing as component A a polymer obtained by radical polymerization made of a) N N diethylaminoethyl methacrylate and b) at least one radically polymerizable compound selected among esters of a ß ethylenically unsaturated monocarboxylic and dicarboxylic acids containing C C alkanols characterized in that the antioxidants are incorporated in the aqueous polymer dispersion in the form of a solution or dispersion and the aqueous polymer dispersion is transferred into a powder form by spray methods.
