Solid peroxyhydrate bleach/detergent composition and method of preparing same

摘要

A solid oxygen-based bleach includes components such as aqueous hydrogen peroxide combined with a quantity of an alkali metal phosphate capable of combining with the hydrogen peroxide to form a peroxyhydrate salt. A sufficient amount of a solidifying agent for the peroxyhydrate salt is added to the mixture while still in its exothermically heated form, to effect solidification of the emulsion upon cooling of the product. The pH of the composition is controlled by addition of sequestering acid salts to maintain the pH within 4 to 9, and preferably 7 to 8. Anionic and/or nonionic surfactants may be added to the composition. The heated molten composition resulting from the exothermic reaction of the constituents is poured into tablet or cake forming molds and allowed to cool thus effecting solidification of the mass in each mold. The bleaching/detergent composition is useful in hot water warewashing, laundry, and hard surface cleaning applications.