| 简介 |
FIELD : chemistry.
SUBSTANCE : invention concerns chemical bleaches applied in cleansers and detergents. Invention claims sodium percarbonate granules with coating of high storage endurance, including a) core obtained by dispersion granulation in pseudoliquefied layer with sodium percarbonate as main component, b) internal coating layer with non-organic hydrate-forming salt as main component, selected out of group including sodium sulfate, sodium carbonate, sodium bicarbonate, magnesium sulfate and mixes or mixed salts of these compounds, and c) outer coating layer with surfactant containing sulfate or sulfonate groups in the form of alkaline metal, alkaline-earth of ammonium salt, as main component.
EFFECT : enhanced storage endurance, high stability and active oxygen content in percarbonate granules.
22 cl, 1 ex |
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