Coated sodium percarbonate particles, process for their preparation, their use and detergent compositions containing them

摘要

Coated sodium percarbonate particles containing a sodium percarbonate core surrounded by at least one coating layer comprising at least one inorganic coating material, the coated particles having a content of available oxygen of at least 3% by weight, and being fizzy to such an extent that 2 g of the coated particles dissolved in 50 ml of water at 20° C. generate more than 0.4 ml of gas after 2 min. Process for the preparation of such coated sodium percarbonate particles comprising a heat treatment.