| 摘要 |
<p>A dry powder, detergent composition suitable for machine dishwashing and which may contain a low phosphate content utilizes as the essential combination of components an alkali metal tripolyphosphate or an alkali metal hexametaphosphate, an appropriate proportion of an alkali metal carbonate, an alkali metal silicate, and a mixture or blend of liquid non-ionic surfactants which are sorbed on solid constituents of the composition to provide a detergent which exhibits superior performance in hard water notwithstanding the relatively low phosphate content of the composition. The liquid non-ionic surfactant mixture comprises a relatively low-foaming, water-soluble, non-ionic surfactant and a relatively high-foaming non-ionic surfactant. Optionally, an oil-soluble, liquid non-ionic surfactant can also be present in the blend. The weight ratio of the low-foaming surfactant to the balance of surfactant in the blend is about 1.5:1 to about 9 1, preferably about 2:1 to about 4:1.</p> |
