. "Further additives which may be included in these radiation-curable aqueous prepolymer dispersions are dispersion auxiliaries, emulsifiers, antioxidants, e.g. 2,2-thiobis(4-methyl-t-butylphenol) or 2,6-di-t-butylphenol, light stabilizers, dyes, pigments, fillers, such as glass or alumina, for example talc, gypsum, silicic add, rutile, carbon black, zinc oxide, iron oxides, reaction accelerators, le" . . . . . .