DETERGENT PARTICLES

摘要

Detergent particles comprising a particle obtained by the step of dry­neutralizing base particles comprising a water-soluble solid alkali inorganic substance (A) with a liquid acid precursor (B) of a non-soap anionic surfactant, wherein the non-soap anionic surfactant is used in an amount of 15% by weight or more of the base particles; and a fluidizing aid (C) existing on a surface of the particle, wherein the detergent particles have a 60-second dissolution ratio of 90% or more, an average particle size of from 150 to 500 µm and a bulk density of 600 g/L or less; a process for preparing detergent particles comprising the steps of (a) preparing a slurry comprising a water-soluble solid alkali inorganic substance (A), wherein the water-soluble solid alkali inorganic substance (A) is present in an amount equal to or greater than an amount equivalent for neutralizing a liquid acid precursor (B) of a non-soap anionic surfactant to be added in step (c); (b) spray-drying the slurry obtained in step (a) to give base particles; (c) adding to the base particles obtained in step (b) the liquid acid precursor (B) in an amount of 15% by weight or more of the base particles, mixing and dry-neutralizing the resulting mixture; and (d) adding a fluidizing aid (C) to the particle obtained in step (c), thereby surface-modifying the particle; and a detergent composition comprising the detergent particles as defined above. The detergent particles can be used for washing laundry items and the like.