| 摘要 |
<p>A particulate bleaching detergent composition includes a synthetic organic nonionic detergent, such as polyethoxylated higher fatty alcohol or alkylphenol, a builder for the nonionic detergent, such as sodium tripolyphosphate, sodium silicate, sodium carbonate or a cation-exchanging sodium aluminosilicate (zeolite), or mixtures thereof, together with a sodium perborate hydrate bleaching agent, the degree of hydration of which corresponds to that of the monohydrate or less, such as 12 to 15%. The composition, unlike similar compositions wherein the sodium perborate hydrate is the tetrahydrate, is non-caking, non-tacky and free-flowing after storage in a sealed container at elevated temperature, e.g. four weeks at 43 DEG C, whereas a similar product in which the sodium perborate hydrate is the tetrahydrate is caked solid after such treatment.</p> |
