Liquid detergent compositions for removal of cooked-on food soils
AssigneeThe Procter & Gamble Company
InventorsEric M. Johnson, Graeme D. Murray, Frederick E. Hardy
Life of this patent
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Abstract
Liquid detergent compositions comprising anionic surfactant and phosphate builder in which the cations are monoethanolammonium or monoethanolammonium in admixture with ammonium, sodium, potassium, calcium, and magnesium cations. The compositions are particularly suited for removing cooked-on foods from cooking utensils.
Claims16
A clear single-phase liquid detergent composition comprising from 26 to about 50% by weight of the composition of anionic detergent selected from the group consisting of linear alkyl benzene sulfonates having from 8-18 carbon atoms in the alkyl radical, alkyl sulfates having from 10-20 carbon atoms, paraffin sulfonates having from 10-20 carbon atoms, alkyl polyglycol ether sulfates having from 10-20 carbon atoms in the alkyl group and from 1-6 ethoxy groups in the molecule, and mixtures thereof;
- from about 0.5 to about 15% by weight of the composition of the anion of a condensed phosphoric acid;
- from 0 to 10% by weight of the composition of mono- or di-lower alkyl benzene sulfonate having a total of 1 to 3 carbon atoms in the alkyl group;
- wherein the cations of the detergent, the phosphoric acid salts and the mono- or di-lower alkyl benzene sulfonate are solely monoethanolammonium and wherein the composition is solubilized in water with a lower alcohol having from 1 to 3 carbon atoms.
A process for the removal of cooked-on food soils from cookware and tableware, comprising the steps of:
- a. soaking said cookware and tableware in an aqueous solution comprising from about 0.5 to about 2%, by weight, of a clear single-phase liquid detergent composition comprising from 26 to about 50% by weight of the composition of anionic detergent selected from the group consisting of linear alkyl benzene sulfonates having from 8-18 carbon atoms in the alkyl radical, alkyl sulfates having from 10-20 carbon atoms, paraffin sulfonates having from 10-20 carbon atoms, alkyl polyglycol ether sulfates having from 10-20 carbon atoms in the alkyl group and from 1-6 ethoxy groups in the molecule, and mixtures thereof;
- from about 0.5 to about 15% by weight of the composition of the anion of a condensed phosphoric acid;
- from 0 to 10% by weight of the composition of mono- or di-lower alkyl benzene sulfonate having a total of 1 to 3 carbon atoms in the alkyl group;
- wherein the cations of the detergent, the phosphoric acid salts and the mono- or di-lower alkylbenzene sulfonate are mixtures of monoethanolammonium and at least one cation selected from the group consisting of ammonium, sodium, potassium, calcium, and magnesium, wherein said monoethanolammonium cation is present in an amount equal to at least 20 mole percent of the cation mixture;
- and wherein the composition is solubilized in water with from about 3 to about 15% of a lower alcohol having from 1 to 3 carbon atoms;
- and
- b. washing said cookware and tableware in an aqueous solution comprising from about 0.05 to about 2%, by weight, of said detergent composition.
Dependencies are inferred from the claim text.