Non-phosphate dishwashing composition and citrate method...

C - Chemistry – Metallurgy – 11 – D

Patent

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C11D 3/20 (2006.01) C07C 59/265 (2006.01) C11D 1/66 (2006.01) C11D 3/08 (2006.01) C11D 3/10 (2006.01) C11D 3/386 (2006.01)

Patent

CA 2087409

ABSTRACT A substantially dry, water-soluble composition is provided that is useful for hard surface cleaning in the presence of water without the necessity of phosphate builders. The composition comprises a sequestering agent formed by intimately admixed particles of a carbonate salt and a hydrocarboxylic acid salt, such as citrate, where the salts have a common alkaline metal cation. This sequestering agent is preferably formed during the composition preparation. The composition further includes an anti-redeposition agent, an alkaline metal silicate, a non-ionic surfactant, and an enzyme system.

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