Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1993-02-24
1994-04-26
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
252 90, 252157, 252160, 25217414, 25217419, 25217425, 252550, 252558, C11D 1700, C11D 137, C11D 308, C11D 712
Patent
active
053064399
ABSTRACT:
A cleaning composition and method for use with jewelry and the like, comprising a molded wafer of citric acid and sodium bicarbonate compressed together to produce effervescence for at least 15 minutes. The citric acid ranges from about 10% to about 30% and preferably about 18% to about 24% by weight of the weight of the formulation. The sodium bicarbonate ranges from about 35% to about 55% and preferably from 40% to about 44% by weight of the total weight. It includes a detergent selected from sodium lauryl sulfate, alkyl aryl sulfonate, tetra sodium ethylene diamine tetra acetic acid, and mixtures thereof which has been admixed into the compressed wafer in an amount sufficient to form a soap solution in up to two cups of water. Preferably, the surfactant comprises about 6% to 10% of sodium lauryl sulfate, about 12% to 18% of alkyl aryl sulfonate, and about 4% to 6% of tetra sodium ethylene diamine tetra acetic acid. Also included is a quantity of mold release to permit easy release of the wafer after compression. The mold release comprises about 3% to 7% of silica by weight of the total weight of the formulation. The wafer in packaged in an outer package sealingly protecting the wafer from air and moisture until the package is opened for use.
REFERENCES:
patent: 3367876 (1968-02-01), Keast et al.
patent: 3607759 (1971-09-01), Barth
patent: 3639568 (1972-02-01), Schmitt
patent: 4180467 (1979-12-01), Barth
patent: 4253842 (1981-03-01), Ehrlich
patent: 4256699 (1981-03-01), Krisp et al.
patent: 4417993 (1983-11-01), Gergely
patent: 5225100 (1993-07-01), Fry et al.
Lieberman Paul
Munday John S.
Tierney Michael P.
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