WO2022115355A1 - Compositions acides polyvalentes et procédés d'utilisation - Google Patents

Compositions acides polyvalentes et procédés d'utilisation Download PDF

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Publication number
WO2022115355A1
WO2022115355A1 PCT/US2021/060268 US2021060268W WO2022115355A1 WO 2022115355 A1 WO2022115355 A1 WO 2022115355A1 US 2021060268 W US2021060268 W US 2021060268W WO 2022115355 A1 WO2022115355 A1 WO 2022115355A1
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WIPO (PCT)
Prior art keywords
composition
compositions
acid
soils
cleaning
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Application number
PCT/US2021/060268
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English (en)
Inventor
Erik C. Olson
Hilina Emiru
Derrick Anderson
Kelly Anne RIGHTMIRE
Timothy Meier
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Ecolab Usa Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/249,793 external-priority patent/US20220290071A1/en
Application filed by Ecolab Usa Inc. filed Critical Ecolab Usa Inc.
Priority to AU2021385532A priority Critical patent/AU2021385532A1/en
Priority to CA3196534A priority patent/CA3196534A1/fr
Priority to EP21827722.6A priority patent/EP4229160A1/fr
Priority to JP2023524723A priority patent/JP2023547398A/ja
Priority to CN202180070601.8A priority patent/CN116323885A/zh
Publication of WO2022115355A1 publication Critical patent/WO2022115355A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0047—Other compounding ingredients characterised by their effect pH regulated compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/143—Sulfonic acid esters
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/24—Mineral surfaces, e.g. stones, frescoes, plasters, walls or concretes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2003—Alcohols; Phenols
    • C11D3/2006—Monohydric alcohols
    • C11D3/2034—Monohydric alcohols aromatic

Definitions

  • the invention relates to multipurpose acidic compositions for cleaning, including de-greasing, de-staining, and/or de-liming, and/or sanitizing.
  • the acidic compositions are liquids are suitable for use as pre-sprays (i.e., spot treatment) to beneficially remove polymerized soils, remove hard water deposit (e.g ., calcium carbonate), soap scum, rust and other stains (e.g., coffee and tea), including assisting in general cleaning of difficult soils, such as fats, oils, cosmetics, and other difficult soils.
  • the acidic compositions can be used for pre-treatments for machine and manual warewash in order to enhance performance of general-purpose products without the inclusion of costly additives in conventional specialty detergents.
  • the acidic compositions can include at least one organic acid and a solvent or solvent system. If desired, the acidic compositions can be PPE free compositions. Methods for using the acidic compositions as pre-treatments, soaks and/or application in machine and manual warewash are also provided. Methods for using the acidic compositions for removing polymerized oils, carbonized soils, baked on soils, fats, oils, stains (e.g, coffee and tea), hard water scale/deposits, and cosmetics are also provided. BACKGROUND OF THE INVENTION
  • Acidic cleaning compositions are often used for hard water and mineral deposit removal, grout and tile cleaning, and the like.
  • the acidic cleaning compositions generally attach and dissolve stains by breaking them down for removal.
  • Acidic compositions are not generally used for general purpose cleaning or removal difficult soils such as polymerized soils. Instead, specialty alkaline detergents are more commonly formulated with specialty additives for treating these types of soils. Formulations containing these specialty additives are costly. They are also not needed for all markets and types of cleaning, degreasing, de staging, de-liming and/or sanitizing. As a result, often specialty cleaning compositions or formulation to include certain specialty additives are not needed for all applications and/or markets.
  • acidic and alkaline compositions for use as paint strippers, for example benzyl alcohol and acids having a pH of about 2.5.
  • alkaline paint strippers it is more effective and common for alkaline paint strippers to be used at a pH higher than 7.0 with a neutralized acid or alkaline source, a solvent, and a detergent.
  • These paint strippers are used to remove old coatings that are difficult to remove by other methods.
  • acidic paint removers is known to work slowly to remove paints, often requiring contact overnight or for extended periods of time. These formulations require hazardous use precautions as well as they can be hazardous to health and safety.
  • the present disclosure relates to multipurpose acidic cleaning compositions and uses thereof.
  • the composition comprises from about 1 wt-% to about 50 wt-% of at least one acid source; from about 1 wt-% to about 50 wt-% surfactant; and from about 1 wt-% to about 50 wt-% solvent or solvent system; wherein a use solution of the composition has a pH between about 1 and about 5.
  • the compositions provide efficacy as multipurpose cleaning and degreasing formulations that penetrate soils with the acidic formulations, namely pH less than about 6, and preferably between about 1 and about 5.
  • a method of cleaning and/or degreasing comprises: applying to a surface or object in need of cleaning and/or degreasing the acidic composition according to the disclosure herein, and removing soils, stains, and/or hard water deposits from the surface or object.
  • the applying to the surface or object is a multipurpose spot treatment, wherein the cleaning benefits are degreasing, de- liming and de-staining.
  • the patent or application file contains at least one drawing executed in color.
  • FIGS. 1 A- 1C show photographs of a drop test using Acidic Compositions containing formic acid (FIG. 1A), citric acid (FIG. IB), and gluconic acid (FIG. 1C) on stainless steel coupons for efficacy in speed to penetrate and remove com oil soil on the coupons as described in Example 1.
  • FIGS. 2A-2C show photographs of a soak test using Acidic Compositions containing formic acid (FIG. 1A), citric acid (FIG. IB), and gluconic acid (FIG. 1C) on stainless steel coupons for efficacy in time to completely remove corn oil soil on the coupons as described in Example 1.
  • FIG. 3 shows a graph of the speed of removal of polymerized com oil soils from coupons as described in Example 2.
  • FIG. 4 shows a graph of tea stain removal efficacy of a Control formulation (alkaline degreaser composition) compared to an Acidic Composition containing citric acid following a 30 second, 1 minute and 2-minute soak as described in Example 3.
  • FIG. 5 shows a graph of red and black soil removal by a Control formulation compared to various Acidic Compositions as described in Example 4.
  • FIG. 6 shows a graph of soap scum removal by the Control formulations compared to various Acidic Compositions as described in Example 5.
  • FIGS. 7A-7E show photographs of soap scum removal from glass slides using Acidic Compositions containing formic acid (FIG. 7A) and citric acid (FIG. 7B), an Acidic Control (FIG. 7C), an Alkaline Control (FIG. 7D), and water (FIG. 7E) as described in Example 5.
  • FIGS. 8A-8B show photographs of stain removal using spot treatments containing water (FIG. 8A) and citric acid (FIG. 8B) as described in Example 6.
  • FIGS. 9A-9B show photographs of polymerized com oil removal using spot treatments containing water (FIG. 9A) and citric acid (FIG. 9B) as described in Example 6.
  • FIGS. 10A-10B show photographs of protein removal using spot treatments containing water (FIG. 10A) and citric acid (FIG. 10B) as described in Example 6.
  • FIG. 11 shows a graph of tea stain removal, protein removal, and polymerized corn oil removal by spot treatment of the Acidic Compositions compared to a water control as described in Example 6.
  • actives or “percent actives” or “percent by weight actives” or “actives concentration” are used interchangeably herein and refers to the concentration of those ingredients involved in cleaning expressed as a percentage minus inert ingredients such as water or salts.
  • cleaning refers to a method used to facilitate or aid in soil removal, bleaching, microbial population reduction, and any combination thereof.
  • the term "free" refers to compositions completely lacking the component or having such a small amount of the component that the component does not affect the performance of the composition.
  • the component may be present as an impurity or as a contaminant and shall be less than 0.5 wt-%. In another embodiment, the amount of the component is less than 0.1 wt-% and in yet another embodiment, the amount of component is less than 0.01 wt-%.
  • hard surface refers to a solid, substantially non-flexible surface such as a countertop, tile, floor, wall, panel, window, plumbing fixture, kitchen and bathroom furniture, appliance, engine, circuit board, and dish. Hard surfaces may include for example, health care surfaces, food processing surfaces, bathroom surfaces, and the like, and may be interior or exterior.
  • substantially similar cleaning performance refers generally to achievement by a substitute cleaning product or substitute cleaning system of generally the same degree (or at least not a significantly lesser degree) of cleanliness or with generally the same expenditure (or at least not a significantly lesser expenditure) of effort, or both, when using the substitute cleaning product or substitute cleaning system to address a typical soiling condition on a typical substrate as described herein.
  • This degree of cleanliness may, depending on the particular cleaning product and particular substrate, correspond to a general absence of visible soils, or to some lesser degree of cleanliness.
  • surfactant or "surface active agent” refers to an organic chemical that when added to a liquid change the properties of that liquid at a surface.
  • weight percent refers to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100. It is understood that, as used here, “percent,” “%,” and the like are intended to be synonymous with “weight percent,” “wt-%,” etc.
  • the methods and compositions may comprise, consist essentially of, or consist of the components and ingredients as well as other ingredients described herein.
  • consisting essentially of means that the methods and compositions may include additional steps, components, or ingredients, but only if the additional steps, components or ingredients do not materially alter the basic and novel characteristics of the claimed methods and compositions.
  • the multipurpose acidic compositions include at least one acid, surfactant(s), a solvent and/or solvent system, and water.
  • the multipurpose alkaline compositions can include additional functional ingredients and can be provided as concentrate or use compositions. Exemplary multipurpose acidic compositions are shown in Table 1 in weight percentage.
  • the compositions are provided as concentrate compositions that can be used for pre-treatment, such as for direct application to a soil, or can be further diluted in a cleaning and/or sanitizing application.
  • the multipurpose acidic compositions are beneficially formulated as concentrates (e.g, First Exemplary Range) or can be further diluted to a use concentrate or ready -to-use (RTU) formulation (e.g, Third Exemplary Range).
  • the pH of the multipurpose acidic compositions use solution is less than about 7, between about 1 to about 7, between about 2 to about 7, between about 2.5 to about 7, and preferably less than about 6. According to preferred embodiments the pH of the multipurpose acidic compositions use solution is less than about 6, or less than about 5, between about 1 to about 5, between about 1 to about 4, between about 2.5 to about 4, or between about 3 to about 4.
  • the multipurpose acidic compositions provide significant safety benefits as a result of the pH above about 2.5 and/or between about 3 to about 4, including the formulations not requiring personal protective equipment (PPE) for safe handling, while providing substantially similar cleaning efficacy, and in many embodiments superior cleaning efficacy to traditional acidic compositions, as well as providing additional cleaning and/or sanitizing benefits.
  • PPE personal protective equipment
  • the multipurpose acidic compositions provide superior degreasing efficacy, along with stain removal (e.g ., difficult to remove stains such as tea, coffee, and the like), calcium carbonate and soap scum removal, rust removal, and aiding in further general- purpose cleaning of fats, oils, cosmetics and other difficult to remove soils.
  • stain removal e.g ., difficult to remove stains such as tea, coffee, and the like
  • calcium carbonate and soap scum removal e.g., difficult to remove stains such as tea, coffee, and the like
  • rust removal e.g., rust removal
  • the wt-ratio of the solvent or solvent system to the acid source is about 1:1. In other embodiments, the wt-ratio of the solvent or solvent system to the acid source is from about 4: 1 to about 1 :4to provide beneficial effects in removing difficult soils, such as polymerized corn oil.
  • the multipurpose acidic compositions include at least one acid source.
  • Acid sources can include organic acids, inorganic acid or a mixture thereof. Examples of acid sources include, for example, citric acid, formic acid, glycolic acid, gluconic acid, phosphoric acid, hydrochloric acid, sulfuric acid, nitric acid, acetic acid or peroxy carboxylic acids.
  • one or more organic acids are included as the acid source, including for example lactic acid, gluconic acid, formic acid, citric acid, acetic acid, oxalic acid, uric acid, malic acid, tartaric acid, or the like.
  • a variety of acids can be formulated into the multipurpose acidic compositions to provide a desired pH for the compositions.
  • the concentrate multipurpose alkaline compositions comprise about 1 wt-% to about 50 wt-%, from about 1 wt-% to about 50 wt-%, from about 1 wt-% to about 30 wt-%, from about 1 wt-% to about 25 wt-%, from about 5 wt-% to about 25 wt-%, from about 5 wt-% to about 20 wt-%, or from about 5 wt-% to about 15 wt-% of the at least one acid source. It is to be understood that all values and ranges between these values and ranges are encompassed by the present invention as well as dilutions of the concentrate.
  • the multipurpose acidic compositions include at least one surfactant.
  • Suitable surfactants can include anionic, cationic, amphoteric, zwitterionic, and/or nonionic surfactants.
  • the emulsifying properties of surfactants can be used for both a concentrate that can be diluted to create a usable cleaning and/or sanitizing product (use dilution) and the use dilution itself.
  • the surfactant or mixture of surfactants can have foaming or defoaming characteristics suitable for a desired cleaning and/or sanitizing application.
  • the surfactant or surfactant system can be selected depending upon the particular soil, e.g ., polymerized soil, that is to be removed.
  • Anionic surfactants suitable for use with the multipurpose alkaline compositions include alkylbenzene sulfonates, such as linear alkylbenzene sulfonates, alkyl carboxylates, paraffin sulfonates and secondary n-alkane sulfonates, sulfosuccinate esters and sulfated linear alcohols. Additional sulfonated anionics include alkyl sulfonates or disulfonates, alkyl aryl sulfonates, alkyl naphthalene sulfonates, alkyl diphenyl oxide disulfonates, and the like. In an embodiment linear alkylbenzene sulfonates (LAS) or linear alkylbenzene sulfonic acids (LABS A) are preferred as the anionic surfactant.
  • LAS linear alkylbenzene sulfonates
  • LABS A linear alkylbenzene sulf
  • Zwitterionic or amphoteric surfactants suitable for use with the multipurpose alkaline compositions include beta-N-alkylaminopropionic acids, n-alkyl-beta- iminodipropionic acids, imidazoline carboxylates, n-alky-betaines, amine oxides, sulfobetaines and sultaines.
  • Nonionic surfactants suitable for use with the multipurpose alkaline compositions include alcohol alkoxylates having EO, PO and BO blocks, fatty acid alkoxylate, alkyl phenol alkoxylates, and polyether (also known as polyalkylene oxide, polyoxyalkylene or polyalkylene glycol) compounds.
  • the polyether compounds are generally polyoxypropylene or polyoxyethylene glycol compounds.
  • the surfactants suitable for use with the multipurpose alkaline compositions are synthetic organic polyoxypropylene (PO)-polyoxyethylene (EO) block copolymers. These surfactants have a diblock polymer comprising an EO block and a PO block, a center block of polyoxypropylene units (PO), and having blocks of polyoxyethylene grated onto the polyoxypropylene unit or a center block of EO with attached PO blocks.
  • Cationic surfactants suitable for use with the multipurpose alkaline compositions can include alkylamines and their salts, alkyl imidazolines, ethoxylated amines, and quaternaries, such as alkylbenzyldimethylammonium salts, alkyl benzene salts, heterocyclic ammonium salts, tetra alkylammonium salts, and the like.
  • Cationics further include compounds containing at least one long carbon chain hydrophobic group and at least one positively charged nitrogen. The long carbon chain group may be attached directly to the nitrogen atom by simple substitution; or more preferably indirectly by a bridging functional group or groups in so-called interrupted alkylamines and amido amines.
  • Such functional groups can make the molecule more hydrophilic and/or more water dispersible, more easily water solubilized by co-surfactant mixtures, and/or water soluble.
  • additional primary, secondary or tertiary amino groups can be introduced, or the amino nitrogen can be quaternized with low molecular weight alkyl groups.
  • the nitrogen can be a part of branched or straight chain moiety of varying degrees of unsaturation or of a saturated or unsaturated heterocyclic ring.
  • cationic surfactants may contain complex linkages having more than one cationic nitrogen atom. Additional description can be in "Surfactant Encyclopedia", Cosmetics & Toiletries, Vol. 104 (2) 86-96 (1989) and U.S. Patent No. 9,663,431, which are herein incorporated by reference in its entirety.
  • Amphoteric surfactants suitable for use with the multipurpose alkaline compositions include derivatives of aliphatic secondary and tertiary amines, in which the aliphatic radical may be straight chain or branched and wherein one of the aliphatic substituents contains from about 8 to 18 carbon atoms and one contains an anionic water solubilizing group, e.g., carboxy, sulfo, sulfato, phosphato, or phosphono.
  • Amphoteric surfactants are subdivided into two major classes known to those of skill in the art and described in "Surfactant Encyclopedia" Cosmetics & Toiletries, Vol. 104 (2) 69-71 (1989) and U.S. Patent No.
  • the first class includes acyl/dialkyl ethylenediamine derivatives (e.g. 2-alkyl hydroxyethyl imidazoline derivatives) and their salts.
  • the second class includes N-alkylamino acids and their salts.
  • Surfactants that can be used include anionic, cationic, amphoteric, zwitterionic, and/or nonionic surfactants, which are commercially available from a number of sources. For a discussion of surfactants, see Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, volume 8, pages 900-912. Surfactants can be used alone or in combination. In an embodiment, nonionics and anionics are used in combination. The semi-polar nonionic, cationic, amphoteric and zwitterionic surfactants can be employed in combination with nonionics or anionics. The above examples are merely specific illustrations of the numerous surfactants which can find application within the scope of the multipurpose alkaline compositions. It should be understood that the selection of particular surfactants or combinations of surfactants can be based on a number of factors including compatibility with the surface to be cleaned at the intended use concentration and the intended environmental conditions including temperature and pH.
  • the surfactant is an anionic alkylbenzene sulfonate.
  • the surfactant is a linear alkyl benzene sulfonate and is combined with the solvent (e.g., benzyl alcohol) for a preferred acidic composition.
  • the multipurpose acidic compositions comprise from about 1 wt-% to about 50 wt-%, from about 1 wt-% to about 40 wt-%, from about 1 wt-% to about 30 wt-%, from about 1 % to about 20 wt-% of surfactant, from about 1 % to about 10 wt-% of surfactant or from about 1 % to about 5 wt-% of surfactant. It is to be understood that all values and ranges between these values and ranges are encompassed by the present invention.
  • the multipurpose acidic compositions include at least one solvent or a solvent system.
  • the multipurpose acidic compositions may include a solvent that also functions as a cleaning agent.
  • the solvent or solvent system can be used for enhancing the cleaning properties of the multipurpose acidic composition as well as to provide emulsifying properties of a given composition.
  • the solvent system may keep hydrophilic and hydrophobic components of the specific composition from separating.
  • the emulsifying properties can be used for both a concentrate that can be diluted to create a usable cleaning product (use solution) and the use dilution itself.
  • Exemplary solvents and solvent systems may include one or more different solvents including aromatic alcohols, alkanol amines, ether amines, glycol ethers, esters and mixtures thereof.
  • Representative solvents may include acetamidophenol, acetanilide, acetophenone, 2-acetyl- 1-methylpyrrole, benzyl acetate, benzyl alcohol, methyl benzyl alcohol, alpha phenyl ethanol, benzyl benzoate, benzyloxyethanol, ethylene glycol phenyl ether (commercially available as "DOWANOL EPh” from Dow Chemical Co.), propylene glycol phenyl ether (commercially available as "DOWANOL PPh” from Dow Chemical Co.), amyl acetate, amyl alcohol, butanol, 3-butoxyethyl-2-propanol, butyl acetate, n-butyl propionate, cyclohexanone, diacetone alcohol, dieth
  • Representative dialkyl carbonates include dimethyl carbonate, diethyl carbonate, dipropyl carbonate, diisopropyl carbonate and dibutyl carbonate.
  • Representative oils include benzaldehyde, pinenes (alphas, betas, etc.), terpineols, terpinenes, carvone, cinnamealdehyde, bomeol and its esters, citrals, ionenes, jasmine oil, limonene, dipentene, linalool and its esters.
  • dibasic esters include dimethyl adipate, dimethyl succinate, dimethyl glutarate, dimethyl malonate, diethyl adipate, diethyl succinate, diethyl glutarate, dibutyl succinate, dibutyl glutarate and products available under the trade designations DBE,
  • phthalate esters include dibutyl phthalate, diethylhexyl phthalate and diethyl phthalate.
  • Preferred solvents for wetting of soils include benzyl alcohol, dibasic esters, essential oils, dialkyl carbonates, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, ethylene glycol phenyl ether, propylene glycol phenyl ether and mixtures thereof.
  • the solvent or solvent system includes at least one aromatic alcohol (e.g ., benzyl alcohols, phenyl alcohols).
  • the aromatic alcohol solvent system is benzyl alcohol.
  • the solvent may further include solvents in similar limited water solubility range as benzyl alcohol, including for example benzyloxyethanol and/or benzyloxypropanol.
  • the solvent system may include benzyl acetate, benzyl alcohol, methyl benzyl alcohol, alpha phenyl ethanol, benzyl benzoate, benzyloxyethanol and/or the like. Additional description of solvent systems that may be included in the compositions are disclosed in U.S. Patent Publication No. 2010/0317559, incorporated herein by reference in its entirety.
  • the multipurpose acidic compositions include from about 1 wt-% to about 50 wt-%, from about 1 wt-% to about 40 wt-%, from about 1 wt-% to about 30 wt-%, from about 1 wt-% to about 20 wt-%, or from about 1 wt-% to about 20 wt-% of a solvent system. It is to be understood that all values and ranges between these values and ranges are encompassed by the present invention.
  • the components of the multipurpose acidic compositions can further be combined with various functional components suitable for uses disclosed herein.
  • the multipurpose acidic compositions including the at least one acid, surfactant(s), solvent and/or solvent system, and water make up a large amount, or even substantially all of the total weight of the compositions. For example, in some embodiments few or no additional functional ingredients are disposed therein.
  • additional functional ingredients may be included in the multipurpose acidic compositions.
  • the functional ingredients provide desired properties and functionalities to the compositions.
  • the term "functional ingredient” includes a material that when dispersed or dissolved in a use and/or concentrate solution, such as an aqueous solution, provides a beneficial property in a particular use.
  • the multipurpose acidic compositions may include hydrotropes or couplers, neutralizing agents, optical brighteners, defoaming agents, anti redeposition agents, bleaching agents, solubility modifiers, buffers, tracers, dispersants, metal protecting agents, soil antiredeposition agents, stabilizing agents, corrosion inhibitors, chelating/sequestrating agents, enzymes, aesthetic enhancing agents including fragrances and/or dyes, additional rheology and/or solubility modifiers or thickeners, buffers, solvents, additional cleaning agents and the like.
  • the multipurpose acidic compositions may include one or more of a buffer or pH adjuster (i.e., alkalinity source), dye (i.e., for product safety /identification), fragrance, thickener, corrosion inhibitor and/or enzyme.
  • a buffer or pH adjuster i.e., alkalinity source
  • dye i.e., for product safety /identification
  • fragrance i.e., for product safety /identification
  • thickener i.e., for product safety /identification
  • the additional ingredients can be pre-formulated with the multipurpose alkaline compositions or added to the use solution before, after, or substantially simultaneously with the addition of the compositions. Additionally, the compositions can be used in conjunction with one or more conventional cleaning and/or sanitizing agents or compositions.
  • the composition does not include polysaccharide polymers and a homo/copolymer of vinylpyrrolidone. In preferred embodiments, the composition does not include cationic surfactants. In preferred embodiments, the composition does not include strong acids.
  • the various additional functional ingredients may be provided in the compositions in the amount from about 0 wt-% and about 50 wt-%, from about 0 wt-% and about 40 wt-%, from about 0 wt-% and about 30 wt-%, from about 0 wt- % and about 25 wt-%, from about 0 wt-% and about 20 wt-%, 0.1 wt-% and about 50 wt- %, from about 0.1 wt-% and about 40 wt-%, from about 0.1 wt-% and about 30 wt-%, from about 0.1 wt-% and about 25 wt-%, from about 0.1 wt-% and about 20 wt-%, from about 0.1 wt-% and about 10 wt-%, from about 0.1 wt-% and about 5 wt-%, from about 1 wt-% and about 50 wt-%, from about
  • the multipurpose acidic compositions can optionally include a hydrotrope as an additional functional ingredient.
  • Hydrotropes aid in compositional stability and aqueous formulation.
  • the suitable hydrotrope couplers which can be employed are non-toxic and retain the active ingredients in aqueous solution throughout the temperature range and concentration to which a concentrate or any use solution is exposed.
  • the hydrotrope can be used to increase the pH of the acidic composition to the desired pH range, such as pH between about 2.5 and about 4, or between about 3 and about 4.
  • hydrotrope coupler may be used provided it does not react with the other components of the composition or negatively affect the performance properties of the composition.
  • hydrotropic coupling agents or solubilizers which can be employed include anionic surfactants such as alkyl sulfates and alkane sulfonates, linear alkyl benzene (including linear alkylbenzene sulfonates (LAS)) or naphthalene sulfonates, secondary alkane sulfonates, alkyl ether sulfates or sulfonates, alkyl phosphates or phosphonates, dialkyl sulfosuccinic acid esters, sugar esters ( e.g ., sorbitan esters), amine oxides (mono-, di-, or tri-alkyl) and C8-C10 alkyl glucosides.
  • anionic surfactants such as alkyl sulfates and alkane sulfonates, linear
  • Preferred coupling agents include aromatic sulfonates such as the alkyl benzene sulfonates (e.g., xylene sulfonates) or naphthalene sulfonates, aryl or alkaryl phosphate esters or their alkoxylated analogues having 1 to about 40 ethylene, propylene or butylene oxide units or mixtures thereof.
  • aromatic sulfonates such as the alkyl benzene sulfonates (e.g., xylene sulfonates) or naphthalene sulfonates, aryl or alkaryl phosphate esters or their alkoxylated analogues having 1 to about 40 ethylene, propylene or butylene oxide units or mixtures thereof.
  • C6-C24 alcohol alkoxylates alkoxylate means ethoxylates, propoxylates, butoxylates, and co-or-terpolymer mixtures thereof
  • C6-C14 alcohol alkoxylates having 1 to about 15 alkylene oxide groups (preferably about 4 to about 10 alkylene oxide groups)
  • C6-C24 alkylphenol alkoxylates preferably C8-C10 alkylphenol alkoxylates
  • C6-C24 alkylpolygly cosides preferably C6-C20 alkylpolygly cosides having 1 to about 15 glycoside groups (preferably about 4 to about 10 glycoside groups)
  • C6-C24 fatty acid ester ethoxylates, propoxylates or glycerides and C4-C12 mono or dialkanolamides.
  • a preferred hydrotrope is sodium xylene sulfonate (SXS).
  • the multipurpose acidic compositions include from about 0.1 wt-% to about 20 wt-%, from about 0.1 wt-% to about 10 wt-%, from about 0.5 wt-% to about 10 wt-%, from about 0.5 wt-% to about 8 wt-%, or from about 0.5 wt-% to about 5 wt-% of hydrotrope. It is to be understood that all values and ranges between these values and ranges are encompassed by the present invention.
  • a use dilution of the concentrate multipurpose acidic compositions can range from a RTU formulation that does not require further dilution to about 1:10 dilution of the concentrate to solvent. Dilution ranges in between are also suitable. More preferably, a use dilution of about 1:3 to about 1:6 is obtained from the concentrate composition.
  • a use solution can be generated according to the particular needs of a user and its application.
  • a dilution step may be initially employed to provide a water source to the concentrated composition suitable for generating a use solution or use composition.
  • the concentrated multipurpose cleaning composition may be diluted at a dilution factor between approximately 1 to about 22 ounces liquid concentrate per gallon of water diluent, from about 1 to about 12 ounces liquid concentrate per gallon of water diluent, or from about 8 to about 10 ounces liquid concentrate per gallon of water diluent.
  • the dilution step occurs at or near a point of use, and may include for example use of a water source that is provided using an aspirator or other dilution mechanism known to the art.
  • when the cleaning composition is employed in a diluted (or a use solution or composition) formulation no further dilution is required by a user.
  • the multipurpose acidic compositions are suited for cleaning, sanitizing and/or disinfecting various surfaces and objects.
  • Multipurpose compositions as the name implies, are intended to be used on multiple types of surfaces and multiple types of soils.
  • the multipurpose acidic compositions are efficacious in cleaning and removing soils from such surfaces and objects, including for example difficult to remove soils, including polymerized soil, carbonized soil, baked on soil, and/or other fat soils. These often include polymerized fat soils, such as polymerized zero trans-fat soils including corn oil.
  • the solvent or solvent system ( ⁇ e.g :, benzyl alcohol) provides a limited water-soluble alcohol providing hydrophobicity that adds affinity towards greasy soils and acts as a plasticizer.
  • the soils upon contact with the multipurpose acidic compositions, swell and lose adhesion from the substrate, providing a unique cleaning approach in comparison to the use of caustic degreasers and/or other alkaline control compositions.
  • the multipurpose acidic compositions have a higher pH than traditional acidic compositions while providing substantially similar cleaning efficacy.
  • the compositions have a pH less than about 4.
  • the pH of the composition in use solution is less than about 4, from about 1 to about 4, or from about 2 to about 4.
  • the pH of the compositions in a use solution is from about 2.5 to about 4, or from about 3 to about 4.
  • the compositions provide significant safety benefits as a result of the pH range while providing substantially similar cleaning efficacy, and in many embodiments superior cleaning efficacy to traditional acidic compositions (or even in comparison to traditional alkaline degreasing compositions).
  • compositions having a pH above about 2.5 do not require PPE, while unexpectedly providing the same or substantially similar cleaning efficacy for soil removal as compositions having alkaline pH, such as above about 11.5 and/or compositions including hydroxide i.e ., caustic) alkalinity sources.
  • the multipurpose acidic compositions act quickly to remove soils, such as polymerized fat soils.
  • the fast penetrating of the soils allows the compositions to be used a pretreatment that does not require extended dwell or pretreatment time.
  • the compositions achieve degreasing action within about approximately 5 seconds to a few minutes of contact to a soiled surface or object.
  • application of the compositions result in soil removal within about seconds without requiring substantial mechanical action or excessive temperatures.
  • the methods result in cleaning efficacy that is at least substantially similar to with the use of a hydroxide-based and corrosive, highly alkaline compositions, demonstrating an unexpected beneficial application of use of the multipurpose acidic compositions.
  • an alkaline control composition can include either a hydroxide-based alkaline composition or a non-hydroxide composition including pH above 11.5 and/or requires use of PPE.
  • the multiuse acidic compositions are particularly well suited for use as a multipurpose de-greasing, de-liming (/. ., hard water spots), and de-staining composition.
  • the de-staining can include removal of difficult stains such as tea and coffee stains.
  • These multipurpose benefits are particularly useful as a multipurpose kitchen spot treatment. Beneficially, such multipurpose benefits provide a single cleaning application instead of formulating detergents to remove stains, polymerized soils (also including carbonized soils and fats), and hard water spots.
  • the de-staining of surfaces or objects with the multipurpose acidic composition is achieved within less than about 10 minutes, less than about 5 minutes, less than about 4 minutes, less than about 3 minutes, less than 90 seconds, less than about 60 seconds, less than about 45 seconds, or less than about 30 seconds of contacting time.
  • the soil removal of surfaces or objects with the multipurpose acidic composition is achieved within less than about 10 minutes, less than about 5 minutes, less than about 4 minutes, less than about 3 minutes, less than about 2 minutes, less than about 60 seconds, or less than about 45 seconds of contacting time.
  • compositions and methods of the invention may include, for example, oven cleaner, including microwave ovens, general degreaser, fryer degreaser, smokehouse cleaner, floor cleaner, exhaust hood cleaner, drain cleaner, floor finish remover, floor cleaner, fryer cleaner, pot and pan cleaner, carpet spotter, pharmaceutical and cosmetics cleaner, instrument cleaner, tar remover, and the like.
  • oven cleaner including microwave ovens, general degreaser, fryer degreaser, smokehouse cleaner, floor cleaner, exhaust hood cleaner, drain cleaner, floor finish remover, floor cleaner, fryer cleaner, pot and pan cleaner, carpet spotter, pharmaceutical and cosmetics cleaner, instrument cleaner, tar remover, and the like.
  • the multipurpose acidic compositions are also able to remove other soils from surfaces or objects beyond the polymerized fat soils.
  • the multipurpose acidic compositions can be used in any other methods seeking to remove polymerized soils, stains and/or hard water scaling without requiring the use of hydroxide-based or corrosive formulations, such as removing polymerized or cross- linked films from floors and other finishes.
  • methods of use of the composition as a floor stripper and/or floor cleaner may be employed.
  • methods of use include removing soils from interior and/or exterior floors.
  • the floor may be made of various materials including for example concrete, for example outside a drive thru wherein oil and grease soils may be present.
  • methods of using the composition as a multipurpose formulation are employed, unexpectedly demonstrating efficacy in non-traditional applications of a non hydroxide alkalinity composition.
  • the present methods can also be used to remove soils other than polymerized soils.
  • Such other soils include, but are not limited to, starch, cellulosic fiber, protein, simple carbohydrates, and combinations of any of these soil types with mineral complexes.
  • specific food soils that are effectively removed using the present methods include, but are not limited to, soils generated in the manufacture and processing meat, poultry, vegetables and fruit, bakery goods, soft drinks, brewing and fermentation residues, soils generated in sugar beet and cane processing and processed foods containing these ingredients and associated ingredients such as juices, sauces, and condiments ( e.g ., fruit juices, ketchup, tomato sauce, barbeque sauce).
  • These soils can develop on environmental surfaces such as walls and floors, freezers and cooling systems, heat exchange equipment surfaces, conveyor surfaces and on other surfaces during the manufacturing and packaging process.
  • the multipurpose acidic compositions can be further employed as a bathroom cleaner. It is beneficial in that the multipurpose cleaning capability of the compositions further removes soils that can be found in bathroom applications. For example, hard water deposits, soap scum (e.g., calcium stearate and other soap scum soils) and/or rust can be removed from the surface or object being cleaned with the multipurpose acidic compositions.
  • the compositions can be used to remove stains, soil, hard water and the like from any conventional bathroom surfaces including but not limited to, toilets, shower stalls, racks, curtains, shower doors, bathing appliances, shower bars, bathtubs, bidets, sinks, etc., as well as countertops, walls, floors, etc.
  • Additional hard surfaces which may be cleaned using the compositions, include for example, counter tops, tile, floors, walls, windows, fixtures, kitchen furniture, appliances, and the like.
  • the various hard surfaces suitable for cleaning include for example, glass; metals; plastics e.g ., polyester, vinyl; fiberglass, Formica, Corian, refractory materials such as: glazed and unglazed tile, brick, porcelain, ceramics as well as stone including marble, granite, and other stones surfaces; and other hard surfaces known to the industry.
  • Acidic compositions having a low pH are particularly well suited for cleaning soap scum, scale (i.e., hard water stains and lime scale as may also be used to refer to such stains commonly found in bathrooms) and/or other residues as is commonly found in bathrooms due to is triprotic acid strength when formulated at pH values less than about 3.
  • the removal of soap scum and scale requires the strength of an acid to effectively clean due to the presence of calcium and magnesium salts and soap residues.
  • the acid component is needed to treat hard water stains, which are mineral stains caused by the deposition of salts, such as calcium or magnesium carbonates, frequently present in hard water.
  • the strength of acidic products are further needed for removing soap scum stains, which include the residues of fatty acid soaps which are often based on alkaline salts of low fatty acids known to precipitate in hard water due to the presence of metal salts therein leaving an undesirable residue upon such surfaces.
  • the acidic compositions have a pH higher than those typically used as bathroom cleaners (conventional pH ⁇ 2.5 or ⁇ 2).
  • the combination of the acid, surfactant and solvent or solvent systems provides the benefits in cleaning without requiring lower pH.
  • the multipurpose acidic compositions can be further employed as an antimicrobial composition.
  • the antimicrobial efficacy can be employed for sanitizing and/or disinfecting cleaning composition.
  • the combination of the one or more acid sources with the anionic surfactant e.g, LAS
  • Use for sanitizing provides antimicrobial efficacy against a broad spectrum of microorganisms, providing broad spectrum bactericidal and fungistatic activity.
  • the broad-spectrum activity can include activity against wide range of different types of microorganisms (including both aerobic and anaerobic microorganisms, gram positive and gram negative microorganisms), including bacteria, yeasts, molds, fungi, algae, and other problematic microorganisms.
  • Sanitizing methods can be used to achieve any suitable reduction of the microbial population in and/or on the surface or object, including reducing the microbial population by at least one logio, at least two logio, at least three logio, at least four logio, or at least five logio.
  • the numeric ranges are inclusive of the numbers defining the range and include each integer within the defined range.
  • the multipurpose acidic compositions are employed at pH ( e.g ., less than about 4) that sanitizing efficacy is achieved at least at a concentration of about 500 ppm surfactant (e.g., LAS).
  • pH e.g ., less than about 4
  • sanitizing efficacy is achieved at least at a concentration of about 500 ppm surfactant (e.g., LAS).
  • compositions can be used as a concentrate or a use solution.
  • the compositions can be used as a pretreatment, soak, or spray.
  • the composition or use solutions thereof can be applied using a variety of methods and conventional application techniques, which will vary depending upon the application as a soak, spray, or the like. These methods can operate on an object, surface, or the like, by contacting the object or surface with the composition. Contacting can comprise any of numerous methods for applying a liquid, such as spraying the compound, immersing the object in the compound, foam or gel treating the object with the compound, or a combination thereof.
  • a concentrate or use composition can be applied to or brought into contact with an object or surface by any conventional method or apparatus for applying a liquid composition to an object.
  • the surface can be wiped with, sprayed with, foamed on, and/or immersed in the compositions, or use compositions made from the concentrated compositions.
  • the liquid compositions can be sprayed, foamed, or wiped onto a surface; the compound can be caused to flow over the surface, or the surface can be dipped into the compound. Contacting can be manual or by machine.
  • a particularly well-suited method for applying or contacting the compositions to a stained or soiled surface is through the use of a manually operated spray-dispensing container.
  • the spray-dispensing container preferably includes a spray nozzle, a dip tube and associated pump dispensing parts, providing convenient application to stained or soiled surfaces or objects.
  • the various methods include a step of contacting a surface in need of cleaning and/or degreasing with the compositions for a sufficient amount of time such that the composition penetrates into the soil to be removed.
  • the length of time required for soil penetration will depend on the thickness of the soil as well as the relative polymerization level of the soil.
  • the composition includes a high foaming surfactant system or a thickening system so that the composition does not dry out and remains hydrated on the surface for an extended period of time.
  • the multipurpose acidic compositions can be in contact with a surface or object for a sufficient amount of time to clean the surface or object.
  • the surface or object is contacted with the composition for at least about 10 seconds, 30 seconds, 1 minute, at least about 10 minutes, or between about 10 minutes and about 20 minutes.
  • the contact time is also provided at a sufficiently acidic pH to provide the multipurpose efficacy, including at a pH less than about 6, less than about 5, and preferably less than about 4.
  • the contact time is also provided at a RTU or use concentration of the multipurpose acidic compositions from about 1 wt-% to about 20 wt- %, including all ranges therebetween.
  • the methods can further optionally include a step of wiping off the treated surface or object with a rag, towel, sponge, or other item (e.g ., a disposable paper towel or sponge).
  • this step is not require, as the surface or object may be placed into a washing machine or ware washing machine for further treatment with a detergent composition.
  • the composition may be left on the soiled surface until it has effectively loosened the soil deposits or stains, after which it may be wiped off, rinsed off, or otherwise removed. For particularly heavy deposits of such undesired stains, multiple applications may also be used.
  • the methods can further optionally include using mechanical force during the contacting step.
  • mechanical force for example, for removing certain soils or stains from the surface or object additional force may need to be applied, e.g., applying a water source and/or mechanical force to assist in removing soils.
  • the methods can further optionally include a step of rinsing off the treated surface or object with water.
  • the composition is wiped off the soiled surface, effectively removing the soils and any remaining composition.
  • the compositions can be applied following a step of heating the composition to a temperature of about 40°F or above, 40°F to about 130°F.
  • the methods provide for soil removal from surfaces or objects at an ambient or room temperature, e.g., about 50°F to about 100°F. It is preferred in various embodiments that neither the surface or object nor the composition is heated before the contacting step.
  • methods provide for soil removal from surfaces or objects at colder temperature, e.g, about 25°F. to about 50°F.
  • the methods may require applying to surfaces or obj ects that range in temperature from 0°F to about 200°F.
  • compositions and methods described herein beneficially remove stains and/or soils and/or lime (hard water deposits) by at least about 70%, by at least about 80%, and preferably at least about 90% or at least about 95%.
  • composition and methods described herein provide substantially similar or superior cleaning efficacy compared to hydroxide-based and corrosive, highly alkaline compositions.
  • compositions and methods beneficially remove stains from various surfaces and provide at least about 80% stain removal, and preferably at least about 90% stain removal or at least about 95% stain removal. In still further embodiments, the compositions and methods beneficially remove 100% of stains from the treated surface. These performance benefits exceed those achieved from hydroxide-based and corrosive, highly alkaline compositions.
  • compositions and methods beneficially remove soils from various surfaces and provide at least about 80% soil removal, and preferably at least about 90% soil removal or at least about 95% soil removal. In still further embodiments, the compositions and methods beneficially remove 100% of soil from the treated surface.
  • compositions and methods beneficially remove lime scale (hard water deposits) from various surfaces and provide at least about 70% lime scale removal, at least about 75% lime scale removal, at least about 80% lime scale removal, and preferably at least about 90% lime scale removal from the treated surface.
  • An alkaline control formulation (see Alkaline Control in Table 3) used for removing grease stains and polymerized soils, such as corn oil soils, was compared to an Acidic Composition containing a combination of a solvent and an organic acid (see Acidic Composition in Table 2) to assess additional performance benefits.
  • Initial assessment of the Acidic Composition was completed on soiled coupons with polymerized corn oil. Additional testing was completed on tea stains, to determine if the Acidic Composition containing the combination of solvent and an organic acid could expand performance benefits beyond greasy soil removals.
  • Panels were then placed on an aluminum tray and cooked in a preheated 375°F oven for approximately 20 minutes (rotating the tray at 10, 15 and 20 minutes) until the polymerized oil was no longer tacky and exhibited a light amber color. After approximately 10 minutes of cooking the oil begins to polymerize and thicken and smoke evolves from the oil. The tray is rotated to ensure panels were evenly heated in oven. The coupons were then allowed to cool overnight at ambient temperature, and placed on a rack with the coated side angled down to reduce any dust accumulation. The coupons are cured after resting for 24 hours at room temperature before testing with the Control and Acidic Composition.
  • FIG. 1 A shows the efficacy of formic acid
  • FIG. IB shows the efficacy of citric acid
  • FIG. 1C shows the efficacy of gluconic acid-containing Acidic Compositions. All three formulations showed at least similar efficacy to a Control. Importantly the measured time to penetrate and remove the com oil (i.e., degreasing) was less than 1 minute for all acidic formulations as shown in FIGS. 1 A-1C.
  • a second test compared the various Acidic Compositions for a soaking application of the chemistries onto the coupons.
  • the coupons were submerged into a test solution of the chemistry being evaluated and the amount of time required for complete soil removal was measured.
  • the efficacy of the compositions is shown in FIGS. 2A-2C where a 1- minute soak time removed the polymerized com oil.
  • Example 2 Additional testing of the Acidic Compositions to remove polymerized corn oil from coupons was completed.
  • the methodology of Example 1 for the polymerized com oil soils was used with the chemistry dropped onto the coupons and pH was adjusted using MEA.
  • the coupons were contacted with the various Acidic Compositions at pH between 2-4 to assess the impact of pH on corn oil removal, namely the speed of removal.
  • the efficacy of the compositions is shown in FIG. 3, showing that the lower pH formulations provide faster penetration and removal of the polymerized corn oil soils from the coupons.
  • the pH of 3-4 provide complete removal, however, for spot treatments where contact time is as minimal as possible before an application, such as a ware wash application, the Acidic Compositions having a pH ⁇ 4 may be preferred.
  • a tea bath was filled with 17 grain hard water and heated to 180°F using a steam line.
  • 150 Lipton black tea bags were added and agitated for about 5 minutes.
  • the tea bags were removed while squeezing the liquid out of them into the broth.
  • the temperature in the bath was then decreased to about 155-160°F.
  • the airline leading to the tea bath was turned on.
  • a set of tiles was added to a rack in a dipper so that the tiles were dipped 25 times for a period of 1 minute each time in the solution and 1 minute out of solution for each dip. If necessary, deionized water was added to the dipper to replace any water loss by evaporation.
  • the tiles were then allowed to air dry for 3 days (or baked in an oven at 180°F for 2 hours before testing).
  • Citric Acid Compositions To assess the ability of Citric Acid Compositions to better remove soil, stained tiles were submerged into beakers of various cleaning compositions. Before the tiles were washed, the amount of soil on the tiles was noted by taking pre-cleaned pictures and visual assessments of the tiles. Beakers of test solutions were prepared as the concentrate RTU (no further dilution). The solutions were stirred at 100 rpm. The tea-stained tiles were dipped into the respective beaker for 30 seconds, 1 minute, and 2 minutes. Thereafter the tile was visually analyzed and then quantified using imaging software to assess the cleanliness of the tile.
  • Black Soil Preparation A black soil including about 50 grams mineral spirits, about
  • Red Soil Preparation A red soil consisting of lard, oil, protein, and iron (III) oxide
  • Control versus Acidic Compositions efficacy results are shown on FIG. 5 with performance of the Acidic Compositions surpassing the Alkaline Control (as well as DI water as a negative control).
  • Soap Scum Soil Preparation Soap scum soil was prepared by mixing approximately 82 grams of DI water, 1.5 grams of casein protein, 3 grams of Ivory brand soap, 0.40 grams Crisco, 0.30 grams Kalin clay, and 12.8 grams of a hardness solution containing calcium and magnesium chloride and sodium bicarbonate. This mixture was adjusted to a pH of 8.75. Approximately 0.50 grams of the prepared soap scum soil was spread onto a plurality of glass slides and allowed to dry. After drying, the slides were baked for 30 minutes at 200°C, and then allowed to cool. The soil removal test was conducted using a Gardner Straightline Apparatus with a synthetic sponge.
  • the synthetic sponge was saturated with about 300 grams of the test compositions, wrung out, and then 25 grams of the test composition was applied to one side of the sponge.
  • the slides were then placed into the Gardner and sprayed lightly with the test composition.
  • the test composition was allowed to dwell on the slide for 30 seconds.
  • the slides were then scrubbed with about 2 pounds of pressure with the moistened synthetic sponge for 15 cycles.
  • the slides were then rinsed with DI water and dried overnight at room temperature.
  • Tea-stained tiles were prepared according to the procedure described in Example 3. The tiles were sprayed with the test compositions and the compositions were allowed to dwell on each tile for one minute (i.e., a presoak). Then the tiles were washed in a Hobart AM- 15 dishwashing machine in a single cycle with 10 drops of a commercially available alkaline detergent composition (60-100 wt-% sodium hydroxide, Alkaline Detergent) using 5 gpg water, and a regular, non-foaming trigger spray.
  • a commercially available alkaline detergent composition 60-100 wt-% sodium hydroxide, Alkaline Detergent
  • Citric Acid composition outperformed water.
  • the Citric Acid composition removed significantly more of the soil, as shown by comparing FIGS. 8A (water) and 8B (Citric Acid Composition).
  • Panels soiled with com oil were prepared as outlined in Example 1. The panels were sprayed with either the Citric Acid composition or water and each was allowed to dwell on the panel for one to two minutes. Panels were either sprayed with a non-foaming sprayer with 1 minute of dwell time wherein the panels were oriented vertically, or the panels were sprayed with a foaming trigger sprayer and oriented horizontally. The panels were then washed in a Hobart AM- 15 dishwashing machine in a single cycle with 10 drops of Alkaline Detergent and 5 gpg water. Photographs of the panels were taken after the cleaning was complete.
  • the Citric Acid composition removed a significant amount of the polymerized com oil with a two-minute treatment, as shown in FIG. 9B. Similar testing was done to compare spot treatment for protein removal. Soil preparation. The panels were sprayed with either the Formic Acid composition or water and each was allowed to dwell on the panel for one minute. The panels were then washed in a Hobart AM- 15 dishwashing machine for 10 cycles using 10 drops of Alkaline Detergent and 5 gpg water. Photographs were taken of the panels after cleaning in the dishwashing machine. The Formic Acid composition outperformed the control formulation as shown in FIGS. 10A and 10B.

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  • Engineering & Computer Science (AREA)
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Abstract

L'invention concerne des compositions acides polyvalentes pour le nettoyage et/ou l'assainissement. Les compositions acides sont des liquides qui éliminent les salissures polymérisées, le dépôt d'eau dure (par exemple, le carbonate de calcium), l'écume de savon, la rouille et d'autres taches (par exemple de café et de thé), y compris l'aide au nettoyage général de salissures difficiles, telles que les graisses, les huiles, les cosmétiques et d'autres salissures difficiles. Les compositions acides peuvent comprendre au moins un acide organique et un solvant ou un système de solvant et, si souhaité, peuvent être des compositions exemptes de PPE. L'invention concerne également des procédés d'utilisation des compositions acides en tant que prétraitements, trempage et/ou application dans le lavage de vaisselle en machine et manuel. L'invention concerne également des procédés d'utilisation des compositions acides pour éliminer les huiles polymérisées, les salissures carbonisées, les graisses, les huiles, les taches (par exemple de café et de thé), le tartre/les dépôts d'eau dure et les produits cosmétiques.
PCT/US2021/060268 2020-11-25 2021-11-22 Compositions acides polyvalentes et procédés d'utilisation WO2022115355A1 (fr)

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CA3196534A CA3196534A1 (fr) 2020-11-25 2021-11-22 Compositions acides polyvalentes et procedes d'utilisation
EP21827722.6A EP4229160A1 (fr) 2020-11-25 2021-11-22 Compositions acides polyvalentes et procédés d'utilisation
JP2023524723A JP2023547398A (ja) 2020-11-25 2021-11-22 多目的酸性組成物及び使用方法
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Citations (6)

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Publication number Priority date Publication date Assignee Title
EP0637629A1 (fr) * 1993-08-04 1995-02-08 Colgate-Palmolive Company Compositions de nettoyage liquides d'usage général en micro-émulsion
US20100317559A1 (en) 2009-06-15 2010-12-16 Robert J. Ryther High alkaline cleaners, cleaning systems and methods of use for cleaning zero trans fat soils
WO2011126452A1 (fr) * 2010-04-08 2011-10-13 Envirochem Iec Ab Moyen d'élimination de peinture, par exemple, et son utilisation
US9663431B2 (en) 2012-06-29 2017-05-30 Ecolab Usa Inc. Glycerin ether ethoxylate solfactants
US20190241839A1 (en) * 2016-10-26 2019-08-08 S.C. Johnson & Son, Inc. Disinfectant cleaning composition with quaternary ammonium hydroxycarboxylate salt
CA3126090A1 (fr) * 2019-02-27 2020-09-03 Lonza, Llc Composition desinfectante a base de peroxyde d'hydrogene

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Publication number Priority date Publication date Assignee Title
EP0637629A1 (fr) * 1993-08-04 1995-02-08 Colgate-Palmolive Company Compositions de nettoyage liquides d'usage général en micro-émulsion
US20100317559A1 (en) 2009-06-15 2010-12-16 Robert J. Ryther High alkaline cleaners, cleaning systems and methods of use for cleaning zero trans fat soils
WO2011126452A1 (fr) * 2010-04-08 2011-10-13 Envirochem Iec Ab Moyen d'élimination de peinture, par exemple, et son utilisation
US9663431B2 (en) 2012-06-29 2017-05-30 Ecolab Usa Inc. Glycerin ether ethoxylate solfactants
US20190241839A1 (en) * 2016-10-26 2019-08-08 S.C. Johnson & Son, Inc. Disinfectant cleaning composition with quaternary ammonium hydroxycarboxylate salt
CA3126090A1 (fr) * 2019-02-27 2020-09-03 Lonza, Llc Composition desinfectante a base de peroxyde d'hydrogene

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KIRK-OTHMER: "Encyclopedia of Chemical Technology", vol. 8, pages: 900 - 912

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EP4229160A1 (fr) 2023-08-23

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