| 摘要 |
<p>Sodium percarbonate particles with a coating layer which contains sodium sulphate in the form of a high-temperature phase of sodium sulphate and/or a high-temperature phase of a double salt having the composition Na<sub>4</sub>(SO<sub>4</sub>)<sub>1+n</sub>(CO<sub>3</sub>)<su b>1-n</sub>, in which n equals 0 to 0.5, exhibit improved storage stability in detergent and cleaning agent preparations, in comparison with sodium percarbonate particles with a coating layer which contains sodium sulphate only in the form of sodium sulphate (V) or burkeite.</p> |
