Preparation, consisting of acrylates and amorphous silicon dioxide, Poly(oxy-1,2-ethanediyl), a-hydro-w-[(1-oxo-2-propen-1-yl)oxy]-, ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 2-Propenoic acid, 2-ethyl-2-[[(1-oxo-2-propenyl)oxy]methyl]-1,3-propanediyl este