| 摘要 |
Pressed shaped bodies comprising coated sodium percarbonate particles having an inner shell layer which comprises one or more water-soluble, hydrate-forming salts and an outer layer on top of this which comprises an alkali metal silicate have an improved storage stability with a lower loss of active oxygen. The shaped bodies preferably additionally comprise at least one surfactant and optionally further wash-active substances. The shaped bodies can be produced by tabletting or briquetting from a pulverulent mixture. The shaped bodies can be used in detergents or cleaning compositions.
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