BLEACH ACTIVATOR GRANULES

摘要

of the Invention Bleach activator granules for use in or with washing and bleaching compositions having a size of from 0.2 mm to 2.5 mm and being composed of: 55% to 90% by weight of at least one bleach activator for percompounds, having a titre in the peracid formation test of at least 1.5 ml 0.1N sodium thiosulphate; and 10% to 45% by weight of a binding material comprising essentially a mixture of at least two hydratable inorganic salts. The first hydratable salt is either sodium triphosphate, borax or mixtures thereof, the second hydratable salt being a salt having solubility in water of more than 30 grams anhydrous salt per 100 ml at 60.degree.C, a pH of around 7 up to about 11 for 10% solution, and no transition point below 35.degree.C. The bleach activator granules have satisfactory stability during storage, are of satisfactory mechanical strength and satisfactory disintegrating properties in contact with water.