| 摘要 |
A method for stabilizing percarbonate in detergents is effected by: I) mixing components carriers, alkali donors, corrosion inhibitors, anticaking agents, sequestering agents and optional surfactants in the form of solid particles in a first stage; II) mixing in a second stage the solid particles from I) with liquid substances in droplet form so as to coat the surfaces of said particles with said substances, said substances comprising A) one or more amphoteric surfactants selected from tallow ampho-polycarboxy glycinate, mixed C8-amphocarboxylates, caprylo-amphocarboxy propionate, cocoamphocarboxy propionate and cocoamphocarboxy glycinate, and B) one or more nonionic surfactants, and optionally C) one or more anionic surfactants, wherein a sequestering agent capable of binding heavy metal ions, particularly Fe<2+> and Fe<3+>, has been dissolved in at least one of these liquid substances, and III) mixing percarbonate as a bleaching agent in a third stage, therewith to produce detergent powder. |
