Low phosphate content dishwashing detergent

Details Low phosphate content dishwashing detergent Low phosphate content dishwashing detergent

C - Chemistry, Metallurgy

11

D

134/3.1

C11D 1/66 (2006.01) C11D 3/06 (2006.01) C11D 3/10 (2006.01)

Patent

CA 1104450

ABSTRACT OF THE DISCLOSURE A dry powder detergent composition suitable for machine dishwashing and which contains a low-phosphate content of from about 10 to about 20 weight percent utilizes, as the essential combination of components, an alkali metal tripolyphosphate or an alkali metal hexameta- phosphate, an appropriate proportion of an alkali metal carbonate, and a mixture of a high-foaming nonionic sur- factant with a foam reducing agent. The surfactant is preferably liquid and is 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 nonionic surfactant mixture preferably further com- prises an oil-soluble, nonionic surfactant. An alkali metal silicate is optionally present.

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