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Introduction of Sodium percarbonate

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dorachen




Introduction of Sodium percarbonate Vide
PostSubject: Introduction of Sodium percarbonate Introduction of Sodium percarbonate EmptyWed Jun 29, 2011 1:03 pm


Sodium percarbonate 2 Na 2 CO 3 3 H 2 O 2 ), which is obtainable both by crystallization in the aqueous phaseand by fluidized bed spray processes, is used as an active oxygen component in detergents, bleaches and cleaning agents. Owing to the inadequate storage stability of sodium percarbonate in a warm, damp environment and also in the presence of various detergent and cleaning agent components, sodium percarbonate has to be stabilized against loss of active oxygen (Oa). One essential stabilizing technique consists of surrounding the Sodium percarbonate particles with a coating consisting of components having a stabilizing action.

The present invention relates to coated Sodium percarbonate particles consisting of a core of sodium percarbonate produced in the aqueous phase by crystallization and a firmly adhering, two-layer coating surrounding the core. The Sodium percarbonate particles coated according to the invention by means of a fluidized bed spray process are distinguished by high active oxygen stability in detergents and also by high abrasion resistance and good silo storage properties. The invention further relates to the use of the coated Sodium percarbonate particles in detergents, cleaning agents and bleaches.
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