Method of preparing a sequestering agent for a non-phosphate cleaning composition
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United States of America Patent
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Oct 26, 1993
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app pub date -
Jan 27, 1992
filing date -
Aug 1, 1991
priority date (Note) -
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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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