Carbonate built laundry detergent composition containing a stron

Details Carbonate built laundry detergent composition containing a stron Carbonate built laundry detergent composition containing a stron

1993-12-17

1995-07-11

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

252133, 25217421, 252173, 252549, 252550, 252554, 252DIG14, C10D 310, C10D 306, C10D 337

Patent

active

054318386

ABSTRACT:
A laundry detergent composition, wherein the solids content comprises an active surfactant, at least about 70 wt. % of a water soluble alkaline carbonate, e.g., sodium carbonate, a minor amount of elemental strontium in the form of a water soluble salt, e.g., strontium chloride, and, optionally, a minor amount of a polymer polycarboxylate, e.g., an acrylic acid polymer, based on the total weight of solids in the composition. Incorporation of strontium ions in the foregoing laundry detergent composition containing carbonate ions is intended to minimize negative interactions that will occur between the precipitation of calcium carbonate and the surfaces of the fabric being cleaned, e.g., fabric encrustation, with an enhancement of this effect when polymeric polycarboxylate is present.

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M. E. McLester et al., "Effects of Alkaline Earth Metal Ions on the Transformation of Aragonite to Calcite in Agneaus Solution", Journal of Inorganic Nuclear Chemistry 32(1970) 391-399.

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