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Institute for Commercialization

Liquid peracid precursor colloidal dispersions: oil-core vesicles

Reference Number: N 03-07

Inventors: Zhou, Boli; McManus, James D.; Sudbury, Barry A.; Van Buskirk, Gregory

Owner: NISTAC

USPTO Link:5954998

Invention Summary

The present invention provides liquid peracid precursor systems adaptable for the delivery of peracid oxidants in the presence of a peroxide source for bleaching or cleaning applications. The peracid precursor is stably dispersed or solubilized within a colloidal dispersion which further comprises a liquid matrix and an emulsifier, which emulsifier has an HLB appreciably different from that of the peracid precursor.

It is therefore an object of this invention to provide liquid systems for the delivery of peracid oxidants in which peracid precursors are stably dispersed or solubilized.

It is a further object of this invention to provide liquid peracid precursor systems in the form of oil-core vesicles to provide storage stable liquid peracid precursor/peroxide source compositions.

It is yet another object of this invention to provide liquid peracid precursor systems which can be stably combined with a source of hydrogen peroxide.

It is a still another object of this invention to provide stable liquid compositions containing acylated phenyl esters preferably without sulfonate moieties present on the phenyl leaving groups.

It is a still further object of this invention to dispense stable liquid compositions containing peracid precursors along with a liquid cleaning adjunct preferably comprising at least one alkalinity source, one detergent, one peroxide source, or a mixture thereof.

It is finally an object of this invention to co-dispense stable liquid compositions containing peracid precursors along with a separately prepared liquid cleaning adjunct, preferably comprising at least one alkalinity source, one liquid detergent, one liquid peroxygen source, or a mixture thereof.