US 6,150,324 A · Alkaline detergent containing mixed organic and inorganic sequestrants resulting in improved soil removal

Abstract

Solid block alkaline detergent compositions are disclosed comprising a source of alkalinity, and other detergent additives including sequestrants. The solid block detergents of the invention used a mixed inorganic and organic sequestrant composition that successfully softens service water used in manufacturing aqueous detergents from the composition, but also obtains substantially improved organic soil removal on dishware or flatware. The solid block detergents of the invention comprise large masses of the chemical ingredients having a weight of greater than about 500 grams in a solid block product format that is typically dispensed using a spray on water dispenser that creates an aqueous concentrate that is used in a washing machine.

Claims10

Dependent claims

An alkaline detergent composition having improved organic soil removal capacity, said detergent comprising, in a solid block:

(a) about 0.1 to 70 wt. % of an alkali metal carbonate detergent;
(b) about 1 to about 10 wt. % of a soil removing surfactant;
and
(c) a sequestrant comprising an organic phosphonate and an inorganic condensed phosphate, wherein the organic phosphonate is present in an amount of about 0.1 to 15 wt. % of the composition, and the inorganic condensed phosphate is present in an amount of about 10 to 40 wt. % of the composition, the sequestrant comprising at least about 1 part by weight of organic phosphonate composition per each one hundred parts by weight of the inorganic condensed phosphate;
wherein there is less than about 9 wt % total phosphorus in the composition;
and
wherein the combination of the inorganic condensed phosphate and the organic phosphonate in the sequestrant provides for improved organic soil removal.

4 more elements

Dependencies are inferred from the claim text.

Alkaline detergent containing mixed organic and inorganic sequestrants resulting in improved soil removal

Life of this patent

Alkaline detergent containing mixed organic and inorganic sequestrants resulting in improved soil removal

Life of this patent

Abstract

Claims10