Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With oxygen or halogen containing chemical bleach or oxidant...
Reexamination Certificate
2001-07-13
2003-09-30
Gupta, Yogendra N. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With oxygen or halogen containing chemical bleach or oxidant...
C510S376000, C510S382000, C424S405000
Reexamination Certificate
active
06627593
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to high concentration compositions of a monoester peroxy dicarboxylic acid, use solutions, methods employing these compositions, and methods of making these compositions.
BACKGROUND OF THE INVENTION
Monoester peroxy dicarboxylic acid compositions exhibit useful antimicrobial activity. Synthesis of monoester peroxy dicarboxylic acids is known, as is their use as antimicrobial agents in cleaning products and methods. Existing compositions including monoester peroxy dicarboxylic acids suffer from unacceptable decomposition of the monoester peroxy dicarboxylic acid, or unacceptable stabilizing agents in the composition. Existing compositions also suffer from low concentrations of active monoester peroxy dicarboxylic acid.
SUMMARY OF THE INVENTION
The present invention relates to high concentration compositions of a monoester peroxy dicarboxylic acid, use solutions, methods employing these compositions, and methods of making these compositions.
In one embodiment, the high concentration composition of a monoester peroxy dicarboxylic acid includes at least about 6 wt-% monoester peroxy dicarboxylic acid, at least about 10 wt-% diester dicarboxylate, at least about 4 wt-% hydrogen peroxide, and less than about 55 wt-% total water. In another embodiment, the high concentration composition is a high concentration diester dicarboxylate-peroxide composition, which includes at least about 20 wt-% diester dicarboxylate, at least about 10 wt-% hydrogen peroxide, and less than about 40 wt-% total water. After it is formed, the high concentration diester dicarboxylate-peroxide composition will form an equilibrium mixture. This equilibrium mixture of monoester peroxy dicarboxylic acid, diester dicarboxylate, hydrogen peroxide, and water provides an embodiment of the high concentration composition of a monoester peroxy dicarboxylic acid.
In each of these embodiments, the high concentration composition can also include one or more surfactants and/or an inert organic solvents, antimicrobial solvents, acidulants, chelants, buffering agents, or stabilizing agents, or mixtures thereof. Especially useful surfactants include anionic-types such as sulfonates and carboxylates, or amine oxides. In one preferred embodiment, the high concentration composition of a monoester peroxy dicarboxylic acid includes at least about 6 wt-% monoester peroxy dicarboxylic acid, at least about 10 wt-% diester dicarboxylate, at least about 4 wt-% hydrogen peroxide, and less than about 55 wt-% total water, and a surfactant. Preferred surfactants include a sulfate derivative, a sulfonate derivative, a phosphate derivative, a phosphonate derivative, a carboxylate derivative, an amine oxide derivative, or a mixture thereof.
In an embodiment, the present invention includes an antimicrobial use solution that includes monoester peroxy dicarboxylic acid and a surfactant, preferably an anionic surfactant, an amine oxide surfactant, or a mixture there. The use solution typically also include a carrier or solvent, such as water, and other ingredients of the high concentration composition. A preferred antimicrobial use solution includes from about 5 ppm to about 500, preferably about 10 ppm to about 300 ppm, most preferably from about 20 ppm to about 200 ppm monoester peroxy dicarboxylic acid; from 2 ppm to about 1200 ppm, preferably from about 5 ppm to about 700 ppm, most preferably from about 10 ppm to about 400 ppm anionic surfactant; from about 2 ppm to about 1200 ppm, preferably from about 5 ppm to about 700 ppm, most preferably from about 10 ppm to about 400 ppm amine oxide surfactant; or a mixture thereof; with total surfactant being greater than about 10 ppm; and also including carrier.
In another embodiment, the invention includes a method employing a use solution of the high concentration composition of the invention to reduce a population of one or more microorganisms on an object, such as on a surface or in a fluid. In an embodiment, the invention includes a method employing a use solution of the high concentration composition of the invention to reduce the population of a microorganism on skin or to treat a disease of skin. In an embodiment, the invention includes a method employing a use solution of the high concentration composition of the invention to reduce an odor of an object, such as of a surface or of a fluid. In an embodiment, the invention includes a method employing a use solution of the high concentration composition of the invention to bleach an object. These methods include contacting the object with a use solution of a high concentration monoester peroxy dicarboxylic acid composition of the invention. Contacting can include spraying the composition, immersing the object in the composition, fogging, wiping, injecting, dripping, foam or gel treating the object with the composition, or a combination thereof.
DETAILED DESCRIPTION OF THE INVENTION
Definitions
As used herein, the term “alcohol” refers to a broad class of hydroxyl-containing organic compounds. Alcohols include monohydric, dihydric, trihydric, and polyhydric alcohols. Monohydric alcohols include aliphatic, alicyclic, aromatic, heterocyclic, or polycyclic alcohols. Aliphatic alcohols include paraffinic and olefinic alcohols. Dihydric alcohols, also known as diols, have two hydroxyl groups and include glycols and other derivatives. Trihydric alcohols have three hydroxyl groups and include glycerol and its derivatives. Polyhydric alcohols are also known as polyols.
As used herein, the term “C
2
or higher alcohol” refers to alcohols with more than 1 carbon atom, e.g., 2 or more carbon atoms. This term excludes methanol. C
2
or higher alcohols include monohydric, dihydric, trihydric, and polyhydric alcohols with more than 1 carbon atom. Alcohols with more than 1 carbon atom can also be referred to as hydroxy alkyl derivatives.
As used herein, the term “microorganisms” refers to any noncellular or unicellular (including colonial) organism. Microorganisms include all prokaryotes. Microorganisms include bacteria (including cyanobacteria and Mycobacteria), lichens, microfungi, protozoa, virinos, viroids, viruses, and some algae. As used herein, the term “microbe” is synonymous with microorganism.
As used herein, the term “object” refers to something material that can be perceived by the senses, directly and/or indirectly. Objects include a surface, including a hard surface (such as glass, ceramics, metal, natural and synthetic rock, wood, and polymeric), an elastomer or plastic, woven and non-woven substrates, a food processing surface, a health care surface, and the like. Objects also include a food product (and its surfaces); a body or stream of water or a gas (e.g., an air stream); and surfaces and articles employed in hospitality and industrial sectors.
As used herein, the phrase “food product” includes any food substance that might require treatment with an antimicrobial agent or composition and that is edible with or without further preparation. Food products include meat (e.g., red meat and pork), seafood, poultry, fruits and vegetables, eggs, living eggs, egg products, ready to eat food, wheat, seeds, roots, tubers, leafs, stems, corms, flowers, sprouts, seasonings, or a combination thereof. The term “produce” refers to food products such as fruits and vegetables and plants or plant-derived materials that are typically sold uncooked and, often, unpackaged, and that can sometimes be eaten raw.
As used herein, the phrase “plant product” includes any plant substance or plant-derived substance that might require treatment with an antimicrobial agent or composition. Plant products include seeds, nuts, nut meats, cut flowers, harvested or growing plants or crops grown or stored in a greenhouse, house plants, and the like. Plant products include many animal feeds.
As used herein, a processed fruit or vegetable refers to a fruit or vegetable that has been cut, chopped, sliced, peeled, ground, milled, irradiated, frozen, cooked (e.g., blanched or pasteurized), or homogenized. As used herein a fruit or v
Hei Robert Dale
Mohs Thomas Robert
Ecolab Inc.
Gupta Yogendra N.
Merchant & Gould P.C.
Petruncio John M
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