Peroxide-based multi-purpose cleaning, degreasing, sanitizing, and disinfecting solutions and methods for preparing the same

Abstract

A cleaning solution including: a primary solvent; a secondary solvent, wherein the secondary solvent is at least partially miscible with the primary solvent; an oxidizing agent, wherein the oxidizing agent includes a peroxide; a chelating agent, wherein the chelating agent includes the structure of formula I: ##STR00001##
wherein R.sub.1-R.sub.4 are each independently selected from the group consisting of H; OH; and an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkanoyl, aroyl, alkenyl, alkyl-alkenyl, alcohol, ether, ketone, carboxylic acid, acid halide, acid anhydride, ester, and/or amide group containing approximately 1 to approximately 25 carbon atom(s); and wherein X.sub.1-X.sub.3 are each independently selected from the group consisting of O; S; and Se; a surfactant system, wherein the surfactant system includes a first anionic surfactant, a second anionic surfactant, a third anionic surfactant, and a fourth anionic surfactant; a pH modifier; and an optional amino acid.

Claims

1. A cleaning solution, consisting of: from approximately 75% to approximately 98% by weight a primary solvent, wherein the primary solvent is water; from approximately 0.1% to approximately 5.0% a secondary solvent, wherein the secondary solvent is dipropylene glycol methyl ether; from approximately 0.5% to approximately 2.0% an oxidizing agent, wherein the oxidizing agent is hydrogen peroxide; from approximately 0.01% to approximately 1.00% a chelating agent, wherein the chelating agent is citric acid; from approximately 0.5% to approximately 2.0% of a homogenous surfactant system, wherein the homogenous surfactant system consists of a first anionic surfactant, a second anionic surfactant, a third anionic surfactant, and a fourth anionic surfactant, and wherein the first anionic surfactant is sodium lauroyl sarcosinate, the second anionic surfactant is sodium laurate, the third anionic surfactant is sodium (C.sub.10-16) benzenesulfonate, and the fourth anionic surfactant is sodium xylenesulphonate; and from approximately 0.05% to approximately 1.00% a pH modifier, wherein the pH modifier is phosphoric acid.

2. A cleaning solution, consisting of: from approximately 75% to approximately 98% by weight a primary solvent, wherein the primary solvent is water; from approximately 0.1% to approximately 5.0% a secondary solvent, wherein the secondary solvent is dipropylene glycol methyl ether; from approximately 0.5% to approximately 2.0% an oxidizing agent, wherein the oxidizing agent is hydrogen peroxide; from approximately 0.01% to approximately 1.00% a chelating agent, wherein the chelating agent is citric acid; from approximately 0.5% to approximately 2.0% of a homogenous surfactant system, wherein the homogenous surfactant system consists of a first anionic surfactant, a second anionic surfactant, a third anionic surfactant, and a fourth anionic surfactant, and wherein the first anionic surfactant is sodium lauroyl sarcosinate, the second anionic surfactant is sodium laurate, the third anionic surfactant is sodium (C.sub.10-16) benzenesulfonate, and the fourth anionic surfactant is sodium xylenesulphonate; from approximately 0.05% to approximately 1.00% a pH modifier, wherein the pH modifier is phosphoric acid; and from approximately 0.005% to approximately 0.050% an amino acid, wherein the amino acid is L-cystine.

3. A cleaning solution, consisting of: from approximately 75% to approximately 98% by weight a primary solvent, wherein the primary solvent is water; from approximately 0.1% to approximately 5.0% a secondary solvent, wherein the secondary solvent is dipropylene glycol methyl ether; from approximately 0.5% to approximately 2.0% an oxidizing agent, wherein the oxidizing agent is hydrogen peroxide; from approximately 0.01% to approximately 1.00% a chelating agent, wherein the chelating agent is citric acid; from approximately 0.5% to approximately 2.0% of a homogenous surfactant system, wherein the homogenous surfactant system consists of a first anionic surfactant, a second anionic surfactant, a third anionic surfactant, and a fourth anionic surfactant, and wherein the first anionic surfactant is sodium lauroyl sarcosinate, the second anionic surfactant is sodium laurate, the third anionic surfactant is sodium (C.sub.10-16) benzenesulfonate, and the fourth anionic surfactant is sodium xylenesulphonate; from approximately 0.05% to approximately 1.00% a pH modifier, wherein the pH modifier is phosphoric acid; from approximately 0.005% to approximately 0.050% an amino acid, wherein the amino acid is L-cystine; and wherein the weight ratio of the oxidizing agent to the surfactant system to the chelating agent preferably ranges from approximately 75:25:1 to approximately 65:15:1.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) While this invention is susceptible of embodiment in many different forms, there is shown in the structural formulas and described herein in detail several specific embodiments with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the embodiments illustrated. It will be understood that the structural formulas disclosed herein are intended to comprise all stereochemical configurations regardless of graphical representations.

(2) In accordance with the present invention, peroxide-based cleaning, degreasing, sanitizing, and/or disinfecting solutions are disclosed herein that are effective, exhibit environmentally preferred characteristics for industrial, commercial, and/or residential applications, and satisfy color, odor, and/or shelf life expectations of the customer.

(3) In one embodiment of the present invention, the cleaning solution comprises: a primary solvent, a secondary solvent, an oxidizing agent, a chelating agent, a surfactant system, a pH modifier, and optionally one or more amino acids.

(4) For purposes of the present disclosure, the primary solvent of the solution may comprise one or more of any one of a number of common, commercially available solvents, including polar solvents and/or non-polar solvents. Specific examples of preferred solvents include, for example, water, deionized, distilled, and/or reverse osmosis water, hexane, acetone, methyl ethyl ketone, toluene, benzene, ethers, 3-methylsulfolane, glutaronitrile, dimethyl sulfoxide, dimethyl formamide, acetonitrile, polyethers including tetraglyme, alcohols including ethoxyethanol, nitriles including 3-hydroxypropionitrile, 2-methylglutaronitrile, ketones including 2-acetylbutyrolactone, cyclopentanone, cyclic esters including beta-propiolactone, gamma-butyrolactone, gamma-valerolactone, propylene carbonate, ethylene carbonate and homogenous mixtures of the same. While specific solvents have been disclosed, for illustrative purposes only, as being suitable primary solvents, numerous other solvents that would be known to those having ordinary skill in the art having the present disclosure before them are likewise contemplated for use. Indeed, it will be understood that non-liquid or polymer type media are suitable for use in accordance with the present invention. Preferably, the primary solvent is present in a concentration ranging from approximately 60 percent by weight to approximately 98 percent by weight, and more preferably from approximately 75 percent by weight to approximately 98 percent by weight.

(5) In accordance with the present invention, the cleaning solution includes a secondary solvent that is preferably clear, colorless, biocompatible, and at least partially miscible in water. The secondary solvent is also preferably a water soluble, hydrophilic solvent that exhibits a moderate evaporation rate (e.g., minutes—as compared to seconds (fast) or hours (long)) and coupling characteristics. Suitable examples of secondary solvents include dipropylene glycol methyl ether and/or 3-methoxy-3-methyl-1-butanol, and derivatives thereof (commercially available from Sigma-Aldrich). Preferably, the secondary solvent is present in a concentration ranging from approximately 0.01 percent by weight to approximately 10.00 percent by weight, and more preferably from approximately 0.1 percent by weight to approximately 5.0 percent by weight.

(6) In one embodiment of the present invention, the oxidizing agent comprises a peroxide, such an inorganic peroxide (e.g., hydrogen peroxide, 35% aqueous hydrogen peroxide commercially available from Sigma-Aldrich) and/or an organic peroxide. Other examples of oxidizing agents include electron accepting compounds, nitric acid, sulfuric acid, hydrochloric acid, peroxydisulfuric acid, hydrochloric acid, and peroxymonosulfuric acid. Preferably, the oxidizing agent is present in a concentration ranging from approximately 0.5 percent by weight to approximately 25.0 percent by weight, and more preferably from approximately 0.5 percent by weight to approximately 2.0 percent by weight.

(7) For purposes of the present disclosure, the chelating agent preferably comprises citric acid (commercially available from Sigma-Aldrich) and derivatives thereof and/or the structure of formula I:

(8) ##STR00011##
wherein R.sub.1-R.sub.4 are each independently selected from the group consisting of H; OH; and an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkanoyl, aroyl, alkenyl, alkyl-alkenyl, alcohol, ether, ketone, carboxylic acid, acid halide, acid anhydride, ester, and/or amide group containing approximately 1 to approximately 25 carbon atom(s); and wherein X.sub.1-X.sub.3 are each independently selected from the group consisting of O; S; and Se.

(9) In a preferred embodiment of the present invention, the chelating agent comprises the structure of formula II:

(10) ##STR00012##
wherein R.sub.1-R.sub.4 are each independently selected from the group consisting of H; OH; and an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkanoyl, aroyl, alkenyl, alkyl-alkenyl, alcohol, ether, ketone, carboxylic acid, acid halide, acid anhydride, ester, and/or amide group containing approximately 1 to approximately 25 carbon atom(s). One specific example of a suitable chelating agent comprises the structure of formula III:

(11) ##STR00013##
Preferably, the chelating agent is present in a concentration ranging from approximately 0.001 percent by weight to approximately 5.00 percent by weight, and more preferably from approximately 0.01 percent by weight to approximately 1.00 percent by weight. It will be understood that the chelating agent may also serve as a pH modifier. It will be further understood that additional and/or other weak and/or strong acids are likewise contemplated for use in accordance with the present invention—so long as the formulation is suitable for intended surfaces.

(12) For purposes of the present disclosure the cleaning solution comprises a surfactant system (e.g., a homogenous surfactant system) that preferably comprises: (1) a first anionic surfactant, (2) a second anionic surfactant, (3) a third anionic surfactant, and (4) a fourth anionic surfactant.

(13) Preferably, the first anionic surfactant includes a sarcosinate, such as, but not limited to, the sarcosinate represented by the structure of formula IV:

(14) ##STR00014##
Preferred examples of anionic surfactants include sarcosinates commercially available from Sigma-Aldrich and/or Stepan. Preferably, the first anionic surfactant is present in a concentration ranging from approximately 0.1 percent by weight to approximately 5.0 percent by weight, and more preferably from approximately 0.5 percent by weight to approximately 2.0 percent by weight.

(15) Preferably, the second anionic surfactant includes a laurate, such as, but not limited to, the laurate represented by the structure of formula V (sodium laurate):

(16) ##STR00015##
Preferred examples of anionic surfactants include laurates commercially available from Sigma-Aldrich and/or Stepan. Preferably, the second anionic surfactant is present in a concentration ranging from approximately 0.1 percent by weight to approximately 5.0 percent by weight, and more preferably from approximately 0.5 percent by weight to approximately 2.0 percent by weight.

(17) In a preferred embodiment of the present invention, the third anionic surfactant comprises sulfonates, including, but not limited to, alkyl benzene sulfonates commercially available from Stepan (e.g., sodium (C.sub.10-16) benzenesulfonate). Other suitable third anionic surfactants comprise the structure of formula VI:

(18) ##STR00016##
wherein n comprises an integer ranging from approximately 5 to approximately 15. One specific example of a third anionic surfactant comprises the structure of formula VII:

(19) ##STR00017##
Preferably, the third anionic surfactant is present in a concentration ranging from approximately 0.1 percent by weight to approximately 5.0 percent by weight, and more preferably from approximately 0.5 percent by weight to approximately 2.0 percent by weight.

(20) Preferably, the fourth anionic surfactant includes a sulphonate and/or a xylenesulphonate, such as, but not limited to, the xylenesulphonate represented by the structure of formula VIII (sodium xylenesulphonate):

(21) ##STR00018##
Preferred examples of anionic surfactants include sulphonates commercially available from Sigma-Aldrich and/or Stepan. Preferably, the fourth anionic surfactant is present in a concentration ranging from approximately 0.1 percent by weight to approximately 5.0 percent by weight, and more preferably from approximately 0.5 percent by weight to approximately 2.0 percent by weight.

(22) For purposes of the present disclosure the cleaning solution preferably comprises a pH modifier, such as, but not limited to, weak acids, strong acids (e.g., phosphoric acid), weak bases, strong bases, and/or buffering combinations of the same. Preferably, the pH modifier is present in a concentration ranging from approximately 0.05 percent by weight to approximately 5.00 percent by weight, and more preferably from approximately 0.05 percent by weight to approximately 1.00 percent by weight.

(23) In a preferred embodiment of the present invention, the cleaning solution preferably comprises an optional amino acid, such as, L-cystine. Preferably, the amino acid is present in a concentration ranging from approximately 0.001 percent by weight to approximately 5.000 percent by weight, and more preferably from approximately 0.01 percent by weight to approximately 2.00 percent by weight.

(24) In one preferred embodiment of the present invention, the cleaning solutions/formulations may comprise one or more adjunct agents including, but not limited to, herbal additives, anti-oxidants, buffers, scents, fragrances, colorants, and/or stabilizers.

(25) In one aspect of the present invention, the weight ratio of the oxidizing agent to the surfactant system to the chelating agent preferably ranges from approximately (i.e., +/− 10 percent) 75:25:1 to approximately 65:15:1 (i.e., +/− 10 percent). It will be understood that other weight ratios and ranges are obtainable from Examples 1-4.

(26) Provided below are non-limiting examples of cleaning solution formulations in accordance with the present invention.

Example 1

(27) TABLE-US-00001 Ingredient Name Phase Amount (% by Wt.) Water A 75.00-98.00 Sodium lauroyl sarcosinate A 0.10-2.00 Sodium laurate A 0.02-0.80 Sodium (C10-16) benzenesulfonate A 0.10-2.00 Sodium xylenesulphonate A 0.01-0.80 Dipropylene glycol methyl ether A 0.05-1.00 Hydrogen peroxide A 0.50-1.50 Citric acid A 0.01-2.00 Phorphoric Acid A 0.05-2.00 Appearance = clear, colorless, pH 2-3

Example 2

(28) TABLE-US-00002 Ingredient Name Phase Amount (% by Wt.) Water A 75.00-98.00 Sodium lauroyl sarcosinate A 0.10-2.00 Sodium (C10-16) benzenesulfonate A 0.10-2.00 Dipropylene glycol methyl ether A 0.05-1.00 Hydrogen peroxide A 0.50-1.50 Citric acid A 0.01-2.00 Phorphoric Acid A 0.05-2.00 Appearance = clear, colorless, pH 2-3

Example 3

(29) TABLE-US-00003 Ingredient Name Phase Amount (% by Wt.) Water A 75.00-98.00 Sodium lauroyl sarcosinate A 0.10-2.00 Sodium laurate A 0.02-0.80 Sodium (C10-16) benzenesulfonate A 0.10-2.00 Sodium xylenesulphonate A 0.01-0.80 Dipropylene glycol methyl ether A 0.05-1.00 Hydrogen peroxide A 0.50-1.50 Citric acid A 0.01-2.00 Phorphoric Acid A 0.05-2.00 L-cystine A 0.005-0.050 Appearance = clear, colorless, pH 2-3

Example 4

(30) TABLE-US-00004 Ingredient Name Phase Amount (% by Wt.) Water A 75.00-98.00 Sodium lauroyl sarcosinate A 0.10-2.00 Sodium (C10-16) benzenesulfonate A 0.10-2.00 3-methoxy-3-methyl-1-butanol A 0.05-1.00 Hydrogen peroxide A 0.50-1.50 Citric acid A 0.01-2.00 Phorphoric Acid A 0.05-2.00 L-cystine A 0.005-0.050 Appearance = clear, colorless, pH 2-3

(31) Procedure:

(32) 1. PHASE A in main vessel, add Phase A ingredients one at a time and mix until completely dissolved and uniform.

(33) It will be further understood that any reference to compounds disclosed herein includes salts and/or solvates of the same.

(34) The foregoing description merely explains and illustrates the invention and the invention is not limited thereto except insofar as the appended claims are so limited, as those skilled in the art who have the disclosure before them will be able to make modifications without departing from the scope of the invention.

(35) While certain embodiments have been illustrated and described, it should be understood that changes and modifications can be made therein in accordance with ordinary skill in the art without departing from the technology in its broader aspects as defined in the following claims.

(36) The embodiments, illustratively described herein may suitably be practiced in the absence of any element or elements, limitation or limitations, not specifically disclosed herein. Thus, for example, the terms “comprising,” “including,” “containing,” etcetera shall be read expansively and without limitation. Additionally, the terms and expressions employed herein have been used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the claimed technology. Additionally, the phrase “consisting essentially of” will be understood to include those elements specifically recited and those additional elements that do not materially affect the basic and novel characteristics of the claimed technology. The phrase “consisting of” excludes any element not specified.

(37) The present disclosure is not to be limited in terms of the particular embodiments described in this application. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. Functionally equivalent methods and compositions within the scope of the disclosure, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds compositions or biological systems, which can of course vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

(38) In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

(39) As will be understood by one skilled in the art, for any and all purposes, particularly in terms of providing a written description, all ranges disclosed herein also encompass any and all possible subranges and combinations of subranges thereof. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, tenths, etcetera. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etcetera. As will also be understood by one skilled in the art all language such as “up to,” “at least,” “greater than,” “less than,” and the like, include the number recited and refer to ranges which can be subsequently broken down into subranges as discussed above. Finally, as will be understood by one skilled in the art, a range includes each individual member.

(40) All publications, patent applications, issued patents, and other documents referred to in this specification are herein incorporated by reference as if each individual publication, patent application, issued patent, or other document was specifically and individually indicated to be incorporated by reference in its entirety. Definitions that are contained in text incorporated by reference are excluded to the extent that they contradict definitions in this disclosure.

(41) Other embodiments are set forth in the following claims.