Studies on the Detergency of Phosphate-Free Detergents for Home-Use

Part 6: Formulation Effects of the Third Constituent of Anionic Surfactants or Protease Blended with the Nonionic Surfactants or Sequestering Agents on Detergency of Fabrics Artificially Soiled

Abstract

To improve the quality of phosphate-free detergents, formulation effects of the third constituent (DBS, AOS or protease) blended with the nonionic surfactant (APE) and sequestering agent (SPA) were studied by using the artificially soiled fabrics (mixed with protein, mud, carbon black and synthetic sebum) .
1) In the DBS or AOS system, it was found that the three-component formulation has a little effect not only on protein soils also on particle soils.
2) In other protease systems, the soil removal efficiency of the protein and particles was significantly improved by the soil release behavior of the complex composed of protein and particles as well as by the interaction of three components.
3) To improve the quality of the detergent, it was expected that the combination of the various compounds having different detergency was required.