Stable Liquid Aqueous Oxidant Detergent

This patented invention relates to phase stable, liquid detergents, which contain solid oxidants which maintains good oxidative stability by the use of an alkali metal borate, boric acid, an alkali metal chloride, or a mixture thereof. Despite the use of various stabilizers, the problem of relatively small amounts of effective detergent actives remains. Second, it is problematic to incorporate enzymes, fluorescent whitening agents, or the like in such compositions since they have a tendency to become deactivated in such formulations. In the present invention, by contrast, the particulate oxidant is suspended in the aqueous medium but kept relatively insoluble therein, by the use of the inventive stabilizing system.

The invention provides a phase stable liquid detergent containing at least one particulate oxidant, comprising of a surfactant and a liquid carrier, wherein the particulate oxidant is stably suspended in the liquid phase, and an oxidant stabilizer. The carrier comprises water, organic solvents, or a mixture thereof. The types and combination of surfactants used can be varied, depending on the intended end use, i.e., whether greasy soils or particulate soils are targeted for removal, or cost, or clarity or other attributes. A mixture of surfactants is preferred; comprising either a mixture of anionic surfactants; a mixture of nonionic surfactants; or a mixture of anionic and nonionic surfactants.

The detergent offers superior performance compared to liquid hydrogen peroxide based detergents, which contain relatively small amounts of actives and are relatively unstable in aqueous liquid oxidant media, such as liquid hydrogen peroxide.

This technology is patented - relates to a family of patents describing detergent compositions.

Girish Nallur, Ph.D.
Chief Scientific Officer
Competitive Technologies, Inc.
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