WO2024020975A1

WO2024020975A1 - Non-oxidizing 2 in 1 cleaning and sanitizing foaming compositions

Info

Publication number: WO2024020975A1
Application number: PCT/CN2022/108770
Authority: WO
Inventors: Jiaying CAI; Jinsen Gao
Original assignee: Ecolab Usa Inc.
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-01

Abstract

The non-oxidizing 2 in 1 cleaning and sanitizing foaming compositions of the present disclosure comprise a cationic biocide, one or more foaming nonionic surfactants, an alkalinity source, and water. The 2 in 1 foaming compositions are particularly suited for clean-out-of-place (COP) processes and effectively clean and sanitize hard surfaces and objects in a single step. The 2 in 1 foaming compositions efficiently remove soils, including heavy fat and protein soils, and provides stable, copious foam. Methods of using the 2 in 1 cleaning and sanitizing foaming compositions are also provided.

Description

NON-OXIDIZING 2 IN 1 CLEANING AND SANITIZING FOAMING COMPOSITIONS

FIELD OF THE INVENTION

The present disclosure relates to non-oxidizing 2 in 1 cleaning and sanitizing compositions with superior foam profile for simultaneous cleaning and sanitizing of hard surfaces and objects, particularly in clean-out-of-place (COP) applications. The compositions include a cationic biocide, one or more foaming nonionic surfactants, and an alkalinity source to create a highly alkaline environment to aid in the removal of protein and fat soils. The disclosure further relates to methods of using these compositions, particularly in COP processes.

BACKGROUND OF THE INVENTION

Clean-out-of-place (COP) cleaning techniques are a specific cleaning and disinfection regimen adapted for removing soils from interior and exterior surfaces of a wide variety of parts, such as ceramic surfaces, metal surfaces, walls, wash tanks, soaking vessels, mop buckets, holding tanks, scrub sinks, vehicle parts washers, non-continuous batch washers and systems, and the like.

Often, COP methods can involve a first rinse, the application of separate cleaning and sanitizing solutions, as well as any other solutions, and a final rinse followed by resumed operations. In food and beverage industries, especially, it is essential to go through multiple cleaning and sanitizing steps to guarantee food safety after each production. Heavy fat and protein soils that result from food production processes are particularly difficult to remove. Traditional COP methods involve separate cleaning and sanitizing steps to ensure adequate cleaning performance and sanitizing performance. Due to the need for separate cleaning and sanitizing solution applications, this process can take a long time to complete, often up to an hour. Separate cleaning and sanitizing steps also result in increased water and electricity consumption.

Moreover, traditional cleaning compositions used in COP processes, particularly in the food and meat processing industry, are non-or low-foaming compositions. Non-or low-foaming cleaning compositions have the drawback that users cannot easily track the areas that are processed or not processed due to the low foam stability. Thus, there is a tendency for some surfaces to be missed or to be treated twice, resulting in ineffective and/or inefficient use of water, cleaning solution, and time.

Thus, a need exists for a composition capable of providing both effective cleaning and sanitizing functions without the need for multiple steps. The composition should be capable of efficiently removing soils, particularly heavy fat and protein soils, and should have superior foamability and foam stability for esthetic qualities and ease of tracking. The present disclosure is directed to such 2 in 1 cleaning and sanitizing foaming compositions.

The above-mentioned disadvantages of current COP compositions and methods are addressed by embodiments of the present disclosure and will be understood by reading and studying the following specification. The following summary is made by way of example and not by way of limitation. It is merely provided to aid the reader in understanding some of the aspects of the disclosure.

SUMMARY OF THE INVENTION

The present disclosure relates to a 2 in 1 cleaning and sanitizing foaming composition and uses thereof. The cleaning and sanitizing composition comprises a cationic biocide, at least one foaming nonionic surfactant, an alkalinity source, and water. The compositions may optionally contain one or more additional surfactants, amphoteric foam stabilizers, a hydroptrope, chelant, and/or a corrosion inhibitor.

Accordingly, one aspect of the present disclosure is to provide a cleaning and sanitizing composition comprising: (a) about 0.01 wt. %to about 20 wt. %of a cationic biocide; (b) about 0.1 wt. %to about 25 wt. %of one or more foaming nonionic surfactants; (c) about 1 wt. %to about 60 wt. %of an alkalinity source; and (d) water or another suitable diluent. In some embodiments, the composition comprises from about 10 wt. %to about 40 wt. %of an alkalinity source.

Another aspect of the present disclosure is to provide a cleaning and sanitizing composition which has a pH of about 7.0 to 14. The present composition also exhibits excellent esthetic properties, such as adequate foam volume during wash and foam structure leading to dense, rigid and stable foam. The present composition may optionally contain ingredients to enhance foamability and protect metal surfaces.

In an embodiment, a method of sanitizing and cleaning a surface and/or object is provided. The method comprises: contacting the surface and/or object with a sanitizing cleaning composition comprising a cationic biocide, at least one foaming nonionic surfactant, an alkalinity source, and water. In some embodiments, the method comprises a clean-out-of-place (COP) application.

While multiple embodiments are disclosed, still other embodiments will become

apparent to those skilled in the art from the following detailed description, which shows and describes illustrative embodiments of the disclosure. Accordingly, the drawings and detailed description are to be regarded as illustrative in nature and not restrictive.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a graph showing cleaning performance of test formulations N1-N7 and a commercially available product, as described in Example 1.

Figures 2A-2B are graphs showing the foamability (Fig. 2A) and foam stability (Fig. 2B) of test formulations N1, N3, and N4 and a commercially available product, as described in Example 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments are not limited to particular non-oxidizing 2 in 1 cleaning and sanitizing foaming compositions and methods of using the same, which can vary are understood by skilled artisans. It is further to be understood that all terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting in any manner or scope. For example, as used in this specification and the appended claims, the singular forms "a, " "an" and "the" can include plural referents unless the content clearly indicates otherwise. Further, all units, prefixes, and symbols may be denoted in its SI accepted form.

Numeric ranges recited within the specification are inclusive of the numbers within the defined range. Throughout this disclosure, various aspects are presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention. Accordingly, the description of a range should be considered to have specifically disclosed all the possible sub-ranges as well as individual numerical values within that range. For example, description of a range such as from 1 to 6 should be considered to have specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual values within that range, for example, 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5. This applies regardless of the breadth of the range.

So that the present invention may be more readily understood, certain terms are first defined. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the invention pertain. Many methods and materials similar, modified, or equivalent to those described herein can be used in the practice of the embodiments without undue experimentation, but the preferred materials and methods are described herein. In describing and claiming the embodiments, the following terminology will be used in accordance with the definitions set out below.

The term "about, " as used herein, refers to variation in the numerical quantity that can occur, for example, through typical measuring and liquid handling procedures used for making concentrates or use solutions in the real world; through inadvertent error in these procedures; through differences in the manufacture, source, or purity of the ingredients used to make the compositions or carry out the methods; and the like. The term "about" also encompasses amounts that differ due to different equilibrium conditions for a composition resulting from a particular initial mixture. Whether or not modified by the term "about" , the claims include equivalents to the quantities.

The term "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 cleansing expressed as a percentage minus inert ingredients such as water or salts. Note that percentages reported in the examples section only are total percentages of components as received from commercial vendors and in those tables, do include inert ingredients such as water or salts.

As used herein, the term "cleaning" refers to a method used to facilitate or aid in soil removal, bleaching, microbial population reduction, and any combination thereof.

As used herein, the term "sanitizer" refers to an agent that reduces the number of bacterial contaminants to safe levels as judged by public health requirements. In an embodiment, sanitizers for use in this invention will provide at least a 99.999%reduction (5-log order reduction) in suspension method (EN14476 and Technical Standard For Disinfection) . These reductions can be evaluated using a procedure set out in Technical Stanndard for Disinfection, Official Insturctions of Chinese Sanitizer, paragraph 2.1.1.7.4 operational program of suspension method, 2002. According to this reference a sanitizer should provide a 99.999%reduction (5-log order reduction) within 5-15 seconds at room temperature, 20±2℃, against several test organisms.

As used herein, the term “biocide” or “cationic biocide” refers to the ingredient that provides antimicrobial cidal activity.

As used herein, the term "substantially 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 a minor constituent and/or impurity or contaminant and shall be less than 5 wt-%. In another embodiment, the amount of the component is less than 1 wt-%and in yet another embodiment, the amount of component is less than 0.1 wt-%.

The term "hard surface" refers to a solid, substantially non-flexible surface such as a countertop, conveyor , 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.

The term "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. As used herein, the term “cleaning performance” may be measured in terms of percentage of soil removal.

The term "improved cleaning performance" or “superior cleaning efficacy” refers generally to achievement by a substitute cleaning product or substitute cleaning system of a generally greater degree of cleanliness or with generally a reduced expenditure of effort, or both, when using the substitute cleaning product or substitute cleaning system rather than a branded cleaning product to address a typical soiling condition on a typical substrate that does not employ the composition of the present disclosure. 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, as explained above.

The term "surfactant" or "surface active agent" refers to an organic chemical that when added to a liquid that reduces the surface tension of a liquid, often forming bubbles in the liquid

The term "weight percent, " "wt-%, " "percent by weight, " "%by weight, " and variations thereof, as used herein, refer 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 of the present invention may comprise, consist essentially of, or consist of the components and ingredients of the present invention as well as other ingredients described herein. As used 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.

Non-Oxidizing 2 In 1 Cleaning &Sanitizing Foaming Compositions

The 2 in 1 cleaning and sanitizing compositions of the present disclosure have high cleaning performance, adequate foam volume during wash, and foam structure leading to dense, rich, fine, and stable foam desired by consumers. The 2 in 1 cleaning and sanitizing compositions include a cationic biocide, nonionic surfactant (s) , an alkalinity source (s) , and water. The 2 in 1 composition can include additional function ingredients and can be provided as concentrate or use compositions. Exemplary compositions and ranges are provided 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 sanitizing application.

Table 1: Non-Oxidizing Cleaning &Sanitizing Composition with Improved Foam Profile

According to embodiments, the pH of the 2 in 1 cleaning and sanitizing compositions concentrate is between about 7 and about 14. In some embodiments, the pH of the 2 in 1 cleaning and sanitizing compositions is between about 11 and about 14, about 12 to about 14, or about 13 to about 14. The 2 in 1 cleaning and sanitizing compositions provide improved cleaning performance due to the higher pH range. In other aspects, the 2 in 1 cleaning and sanitizing compositions provide superior degreasing efficacy along with sanitization.

Cationic Biocide

One or more cationic biocides is present in a 2 in 1 cleaning and sanitizing foaming composition of the present disclosure in an amount of preferably about 0.01 wt. %to about 20 wt. %, and more preferably 0.05 wt. %to about 15 wt. %, and most preferably about 0.5 wt. %to about 10 wt. %.

The amount of antimicrobial agent in the composition is related to the end use of the composition. The amount of antimicrobial agent is sufficient in the compositions of the invention to achieve a microbial kill in a short contact time, for example, 15 to 30 seconds.

Cationic biocides are an antimicrobial agent useful in the present invention. The cationic biocides are substances based on nitrogen centered cationic moieties with net positive change. The cationic biocides are preferably selected from the group consisting of cationic polymers, cationic surfactants, cationic monomers, cationic silicon compounds, cationic derivatized protein hydrolyzates and betaines with at least one cationic or cationically-active group.

Suitable cationic biocides contain quaternary ammonium groups. Suitable cationic biocides especially include those of the general formula:

N ⁽⁺⁾ R ¹R ²R ³R ⁴X ^(-)

wherein R ¹, R ², R ³ and R ⁴ independently of each other represent alkyl groups, aliphatic groups, aromatic groups, alkoxy groups, polyoxyalkylene groups, alkylamido groups, hydroxyalkyl groups, aryl groups, H ⁺ ions, each with from 1 to 22 carbon atoms, with the provision that at least one of the groups R ¹, R ², R ³ and R ⁴ has at least eight carbon atoms and wherein X (-) represents an anion, for example, a halogen, acetate, phosphate, nitrate or alkyl sulfate, preferably a chloride or bromide. The aliphatic groups can also contain cross-linking or other groups, for example additional amino groups, in addition to the carbon and hydrogen atoms.

Particular cationic biocides include, for example, but are not limited to, alkyl dimethyl benzyl ammonium chloride (ADBAC, or benzalkonium chloride) , alkyl dimethyl ethylbenzyl ammonium chloride, dialkyl dimethyl ammonium chloride, benzethonium chloride, N, N-bis- (3-aminopropyl) dodecylamine, chlorhexidine gluconate, a salt of chlorhexidene gluconate, PHMB (polyhexamethylene biguanide) , salt of a biguanide, a substituted biguanide derivative, an organic salt of a quaternary ammonium containing compound or an inorganic salt of a quaternary ammonium containing compound or mixtures thereof.

Foaming Amphoteric Surfactant

At least one foaming Amphoteric surfactant is present in a 2 in 1 cleaning and sanitizing foaming composition of the present disclosure in an amount of preferably about 0.1 wt. %to about 25 wt. %, more preferably 0.5 wt. %to about 20 wt. %, and most preferably about 1 wt. %to about 15 wt. %.

The amount of foaming Amphoteric surfactant present in the composition is related to the amount of the cationic biocide in the composition, the amount of the other surfactants present in the composition, the identity of the cationic biocide and other surfactants, and the end use of the composition.

Examples of suitable foaming Amphoteric surfactants include, but are not limited to, amine oxide surfactants, which may be: alkyl di (C ₁-C ₇) amine oxides in which the alkyl group has about 10-20, and preferably 8-16 carbon atoms, and can be straight or branched chain, saturated or unsaturated. Examples of such compounds include lauryl dimethyl amine oxide, myristyl dimethyl amine oxide, and those in which the alkyl group is a mixture of different amine oxide, dimethyl cocoamine oxide, dimethyl (hydrogenated tallow) amine oxide, and myristyl/palmityl dimethyl amine oxide; alkyl di (hydroxy C ₁-C ₇) amine oxides in which the alkyl group has about 8-20, and preferably 12-16 carbon atoms, and can be straight or branched chain, saturated or unsaturated. Examples of such compounds include bis (2-hydroxyethyl) cocoamine oxide, bis (2-hydroxyethyl) tallowamine oxide; and bis (2-hydroxyethyl) stearylamine oxide; alkylamidopropyl di (C ₁-C ₇) amine oxides in which the alkyl group has about 8-20, and preferably 12-16 carbon atoms, and can be straight or branched chain, saturated or unsaturated. Examples of such compounds include cocoamidopropyl dimethyl amine oxide and tallowamidopropyl dimethyl amine oxide; and alkylmorpholine oxides in which the alkyl group has about 10-20, and preferably 12-16 carbon atoms, and can be straight or branched chain, saturated or unsaturated. Particularly preferred are alkyl amine oxides in which the alkyl group has about 10-14, and preferably has 12 carbon atoms, which are preferably saturated. Especially preferred is lauryl dimethyl amine oxide.

The 2 in 1 cleaning and sanitizing foaming composition can contain a amphoteric surfactant component that includes a detersive amount of amphoteric surfactant or a mixture of amphoteric surfactants. Typically, a amphoteric surfactant has a hydrophobic region, such as a long chain alkyl group or an alkylated aryl group, and a hydrophilic group comprising an ethoxy and/or other hydrophilic moieties.

Foam Boosting Surfactant

In some embodiments, a 2 in 1 cleaning and sanitizing foaming composition may contain one or more additional nonionic foam boosting surfactants. The foam boosting surfactant can be a nonionic surfactant selected from the foregoing non exhaustive list of suitable foaming nonionic surfactants. In some particular embodiments, the foam boosting surfactant is an alkyl polyglucoside.

Additional nonionic surfactants include alcohol ethoxylates, fatty acid ethoxylates, alkyl phenol ethoxylate, monoalkonaolamide ethoxylates, sorbitan esters and their ethoxylated derivatives, ethoxylated fats and oils, amine ethoxylates, ethylene oxide-propylene oxide co –polymers, glycol esters, glycerol and polyglycerol esters, sucrose esters mono and polysaccharides surfactants, such as alkyl polyglucosides.

If present, the foam boosting surfactant is present in an amount of preferably about 0.01 wt. %to about 20 wt. %, more preferably 0.05 wt. %to about 15 wt. %, and most preferably about 1 wt. %to about 10 wt. %.

The amount of foam boosting surfactant present in the composition is related to the amount of the cationic biocide in the composition, the amount of the foaming nonionic surfactant, the other surfactants present in the composition, the identity of the cationic biocide, foaming nonionic surfactant, and other surfactants, and the end use of the composition.

Alkalinity Source

The compositions according to the invention include a source of alkalinity in an amount of preferably about 1 wt. %to about 60 wt. %, more preferably 5 wt. %to about 50 wt. %, and most preferably about 10 wt. %to about 40 wt. %. Any of a variety of sources of alkalinity suitable for providing a highly alkaline pH of the cleaning composition described herein can be included or employed.

Suitable sources of alkalinity include hydroxide salt, , carbonate salt, borate salt, silicate salt, phosphonate salt, amine, mixtures thereof, of the like. Suitable sources of alkalinity include alkali metal hydroxide, , alkali metal carbonate, alkali metal borate, alkali metal silicate, alkali metal phosphonate, amine, mixtures thereof, of the like. For example, the source of alkalinity can be an alkali metal hydroxide, such as sodium hydroxide or potassium hydroxide, mixtures thereof, of the like. For example, suitable sources of alkalinity include non-caustic alkalinity such as, alkali metal carbonate, alkali metal borate, alkali metal silicate, alkali metal phosphonate, amine, alkanol amines, such as monoethanolamine and the like, mixtures thereof, of the like.

In a preferred aspect, the alkalinity source is an alkali metal hydroxide. Preferably, the alkali metal hydroxide is sodium hydroxide (e.g. caustic) . Examples of suitable alkali metal hydroxides include sodium hydroxide, potassium hydroxide, and lithium hydroxide. The alkali metal hydroxides may be added to the composition in any form known in the art, including as solid beads, dissolved in an aqueous solution, or a combination thereof. Alkali metal hydroxides are commercially available as a solid in the form of prilled solids or beads having a mix of particle sizes ranging from about 12-100 U.S. mesh, or as an aqueous solution, as for example, as a 45%and a 50%by weight solution.

In other aspects, the alkalinity source may further include alkali metal salts, acid salts (e.g., weak acid salts) , inorganic alkalinity sources, and the like. Some examples of alkali metal salts include alkali metal carbonate, alkali metal silicate, alkali metal phosphonate, alkali metal sulfate, alkali metal borate, or the like, and mixtures thereof. Suitable alkali metal carbonates include sodium or potassium carbonate, sodium or potassium bicarbonate, sodium or potassium sesquicarbonate, mixtures thereof, and the like; such as sodium carbonate, potassium carbonate, or mixtures thereof. Suitable inorganic alkalinity sources include alkali metal hydroxide, alkali metal silicate, or the like. Examples of useful alkaline metal silicates include sodium or potassium silicate (for example, with a M ₂O: SiO ₂ ratio of 1: 2.4 to 5: 1, M representing an alkali metal) or sodium or potassium metasilicate.

In an aspect, the pH of a use solution of the 2 in 1 cleaning and sanitizing foaming composition is at least about 7, preferably at least about 12. In certain embodiments, the use solution compositions can be at, or the methods can employ, an alkaline pH of about 10 to about 14, about 12 to about 14, or about 13 to about 14 providing high alkaline applications of use.

Foam Stabilizer

A 2 in 1 cleaning and sanitizing foaming composition of the present disclosure may contain an amphoteric foam stabilizer in an amount of preferably about 0.1 wt. %to about 25 wt. %, more preferably 0.5 wt. %to about 20 wt. %, and most preferably about 1 wt. %to about 15 wt. %.

Suitable amphoteric foam stabilizers include water-soluble betaine and propionate surfactants or mixtures thereof. Betaine surfactants are suitably chosen from those of the general formula:

wherein R ₁ is an alkyl group containing from 8 to 18 carbon atoms, or the amido radical which may be represented by the following general formula:

wherein R is an alkyl group having from 8 to 18 carbon atoms, a is an integer having a value of from 1 to 4 inclusive, and R ₂ is a C ₁-C ₄ alkylene group. Examples of such water-soluble betaine surfactants include dodecyl dimethyl betaine, as well as cocoamidopropylbetaine, (e.g. Lakeland CAB and Surfac B4) , cocoalkyl dimethyl betaine (e.g. Lakeland CTA/N) and bis- (1, 2-ethanediol) tallow dimethyl betaine (e.g. Lakeland TAB II) .

Suitable propionate surfactants include dipropionates or monopropionates of the formula

wherein R is a C _8-22 alkyl group, and M is hydrogen or an alkali metal ion, for example sodium or potassium.

Examples of such water-soluble propionate surfactants include dipropionates such as β-alanine, N- (2-carboxy ethyl) N-coco alkyl derivatives (e.g. Lakeland AMA, AMA 38 or AMA 100) , N- (2-carboxyethyl) N-tallow alkyl derivative (30%solution) (e.g. Lakeland ODA) , cocamidopropionate sodium salts (e.g. Librateric AA-30 and AA-38) and monopropionates such as N-cocoalkylaminopropionic acid (e.g. Lakeland ACP 70) or mixtures thereof.

Further suitable amphoteric surfactants include alkylamine dicarboxylates such as Surfac BH30, β-alanine, N- (2-carboxy ethyl) N-coco alkyl derivatives and sodium salts thereof, cocamidopropylbetaine, alkylamine dicarboxylates and mixtures thereof.

Hydrotrope

In some embodiments, the 2 in 1 cleaning and sanitizing foaming composition includes a hydrotrope in an amount of preferably about 0.01 wt. %to about 20 wt. %, more preferably 0.05 wt. %to about 15 wt. %, and most preferably about 1 wt. %to about 10 wt. %.

Selected hydrotropes aid in the solubilization of one or more components of the composition and improves the impregnation qualities of the composition. Exemplary hydrotropes include, for example, sodium xylene sulfonate (SXS) and sodium cumene sulfonates (SCS) . Additional hydrotropes include for example, n-octanesulfonate, a xylene sulfonate, a naphthalene sulfonate, ethylhexyl sulfate, lauryl sulfate, etc.

These agents may also improve the impregnation properties of the composition. Examples of suitable foam structure enhancing agents include, but are not limited to, polyols, such as glycerol (glycerin) , propylene glycol, hexylene glycol, diethylene glycol, propylene glycol n-alkanols, ethylene glycol, other glycols, monooleate of ethoxylated glycerides (with 8 to 10 ethylene oxide units) ; esters, such as isopropyl myristate/palmitate, myristyl alcohol, lauryl alcohol, lauryl lactate, and amides, such as acetamide oleates such as triolein.

Metal Protecting Silicate

Optionally, a silicate can be included in the composition to provide for metal protection. A benefit of using a silicate as a metal protectant is that it can also serve as an additional alkalinity source and function as an anti-redeposition agent. In some embodiments, this may be beneficial. The 2 in 1 cleaning and sanitizing foaming composition can be provided without a silicate, but when a silicate is included, it can be included in amounts that provide for desired metal protection. A silicate can be optionally included in an amount of preferably about 0 wt. %to about 15 wt. %, more preferably 0 wt. %to about 10 wt. %, and most preferably about 0 wt. %to about 5 wt. %.

Exemplary silicates include, but are not limited to, sodium silicate, potassium silicate, potassium metasilicate, or sodium metasilicate. Depending on the end use of the composition, sodium silicate may be preferred over sodium metasilicate, as sodium metasilicate may cause discoloration of aluminum surfaces.

Chelant

In some embodiments, 2 in 1 cleaning and sanitizing foaming composition may include at least one chelant in an amount of preferably about 0.01 wt. %to about 15 wt. %, more preferably 0.05 wt. %to about 10 wt. %, and most preferably about 1 wt. %to about 5 wt. %.

In general, a chelant or chelating agent is a molecule capable of coordinating (i.e., binding) the metal ions commonly found in water sources to prevent the metal ions from interfering with the action of the other ingredients. Examples of chelating agents include phosphonic acid and phosphonates, phosphates, gluconic acid and gluconates, aminocarboxylates and their derivatives, pyrophosphates, ethylenediamine and ethylenetriamine derivatives, hydroxyacids, and mono-, di-, and tri-carboxylates and their corresponding acids. In certain embodiments the composition is phosphate free.

Exemplary chelants include, but are not limited to: sodium gluconate, sodium glucoheptonate, N-hydroxyethylenediaminetriacetic acid (HEDTA) , ethylenediaminetetraacetic acid (EDTA) , nitrilotriacetic acid (NTA) , diethylenetriaminepentaacetic acid (DTPA) , ethylenediaminetetraproprionic acid, triethylenetetraaminehexaacetic acid (TTHA) , and the respective alkali metal, ammonium and substituted ammonium salts thereof, ethylenediaminetetraacetic acid tetrasodium salt (EDTA) , nitrilotriacetic acid trisodium salt (NTA) , ethanoldiglycine disodium salt (EDG) , diethanolglycine sodium-salt (DEG) , and 1, 3-propylenediaminetetraacetic acid (PDTA) , dicarboxymethyl glutamic acid tetrasodium salt (GLDA) , methylglycine-N-N-diacetic acid trisodium salt (MGDA) , and iminodisuccinate sodium salt (IDS) .

The chelant employed must be capable of and included in concentrations sufficient to coordinate (i.e., bind) the metal ions commonly found in water sources. For example, formulations that teach use of chelants for corrosion inhibition, such as in U.S. Publication 2019/0169550, are not used at concentrations that would provide cleaning efficacy is employed in the 2 in 1 cleaning and sanitizing foaming compositions.

Additional Functional Materials

The components of the 2 in 1 cleaning and sanitizing foaming composition can further be combined with various functional components suitable for use in COP applications. In some embodiments, the 2 in 1 cleaning and sanitizing foaming compositions including the cationic biocide, foaming nonionic surfactant (s) , alkalinity source, 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.

In other embodiments, additional functional ingredients may be included in the 2 in 1 cleaning and sanitizing foaming compositions. The functional ingredients provide desired properties and functionalities to the compositions. For the purpose of this application, 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. Some particular examples of functional materials are discussed in more detail below, although the particular materials discussed are given by way of example only, and that a broad variety of other functional ingredients may be used. For example, many of the functional materials discussed below relate to materials used in COP applications. However, other embodiments may include functional ingredients for use in other applications.

In certain embodiments, the compositions may include additional surfactants, anti-redeposition agents, bleaching agents, detergent fillers, solubility modifiers, dispersants, additional metal protecting agents, stabilizing agents, corrosion inhibitors, fragrances and/or dyes, thickeners, buffers, solvents, preservatives, additional cleaning agents, and the like.

According to embodiments, 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 1 wt-%and about 40 wt-%, from about 1 wt-%and about 30 wt-%, from about 1 wt-%and about 25 wt-%, from about 1 wt-%and about 20 wt-%, from about 1 wt-%and about 10 wt-%, or from about 1 wt-%and about 5 wt-%. In addition, without being limited according to the invention, all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.

Additional Surfactants

In some embodiments, the compositions of the present disclosure may include one or more surfactants in addition to the nonionic and foam boosting surfactants. Suitable additional surfactants include, but are not limited to, amphoteric, zwitterionic, and cationic surfactants. The 2 in 1 cleaning and sanitizing foaming compositions of the present disclosure are preferably free of anionic surfactants.

The cleaning composition can contain a nonionic surfactant component that includes a detersive amount of nonionic surfactant or a mixture of nonionic surfactants. Nonionic surfactants can be included in the cleaning composition to enhance grease removal properties.

Additional nonionic surfactants that can be used in the composition include polyalkylene oxide surfactants (also known as polyoxyalkylene surfactants or polyalkylene glycol surfactants) . Suitable polyalkylene oxide surfactants include polyoxypropylene surfactants and polyoxyethylene glycol surfactants. Suitable surfactants of this type are synthetic organic polyoxypropylene (PO) -polyoxyethylene (EO) block copolymers. These surfactants include a di-block polymer comprising an EO block and a PO block, a center block of polyoxypropylene units (PO) , and having blocks of polyoxyethylene grafted onto the polyoxypropylene unit or a center block of EO with attached PO blocks. Further, this surfactant can have further blocks of either polyoxyethylene or polyoxypropylene in the molecules. A suitable average molecular weight range of useful surfactants can be about 1,000 to about 40,000 and the weight percent content of ethylene oxide can be about 10-80 wt%.

Other nonionic surfactants include alcohol alkoxylates. A suitable alcohol alkoxylate include linear alcohol ethoxylates such as Tomadol ^TM 1-5 which is a surfactant containing an alkyl group having 11 carbon atoms and 5 moles of ethylene oxide. Additional alcohol alkoxylates include alkylphenol ethoxylates, branched alcohol ethoxylates, secondary alcohol ethoxylates (e.g., Tergitol 15-S-7 from Dow Chemical) , castor oil ethoxylates, alkylamine ethoxylates, tallow amine ethoxylates, fatty acid ethoxylates, sorbital oleate ethoxylates, end-capped ethoxylates, or mixtures thereof. Additional nonionic surfactants include amides such as fatty alkanolamides, alkyldiethanolamides, coconut diethanolamide, lauric diethanolamide, polyethylene glycol cocoamide (e.g., PEG-6 cocoamide) , oleic diethanolamide, or mixtures thereof. Additional suitable nonionic surfactants include polyalkoxylated aliphatic base, polyalkoxylated amide, glycol esters, glycerol esters, amine oxides, phosphate esters, alcohol phosphate, fatty triglycerides, fatty triglyceride esters, alkyl ether phosphate, alkyl esters, alkyl phenol ethoxylate phosphate esters, alkyl polysaccharides, block copolymers, alkyl polyglucosides, or mixtures thereof.

When additional nonionic surfactants are included in the detergent composition concentrate, they can be included in an amount of at least about 0.1 wt. %and can be included in an amount of up to about 15 wt. %. The concentrate can include about 0.1 to 1.0 wt.%, about 0.5 wt. %to about 12 wt. %or about 2 wt. %to about 10 wt. %of the nonionic surfactant.

Amphoteric surfactants can also be used to provide desired detersive properties. Suitable amphoteric surfactants that can be used include, but are not limited to: betaines, imidazolines, and propionates. Suitable amphoteric surfactants include, but are not limited to: sultaines, amphopropionates, amphodipropionates, aminopropionates, aminodipropionates, amphoacetates, amphodiacetates, and amphohydroxypropylsulfonates.

When the detergent composition includes an amphoteric surfactant, the amphoteric surfactant can be included in an amount of about 0.1 wt%to about 15 wt%. The concentrate can include about 0.1 wt%to about 1.0 wt%, 0.5 wt%to about 12 wt%or about 2 wt%to about 10 wt%of the amphoteric surfactant.

The cleaning composition can contain a cationic surfactant component that includes a detersive amount of cationic surfactant or a mixture of cationic surfactants. Cationic co-surfactants that can be used in the cleaning composition include, but are not limited to: amines such as primary, secondary and tertiary monoamines with C ₁₈ alkyl or alkenyl chains, ethoxylated alkylamines, alkoxylates of ethylenediamine, imidazoles such as a 1- (2-hydroxyethyl) -2-imidazoline, a 2-alkyl-1- (2-hydroxyethyl) -2-imidazoline, and the like; and quaternary ammonium salts, as for example, alkylquaternary ammonium chloride surfactants such as n-alkyl (C ₁₂-C ₁₈) dimethylbenzyl ammonium chloride, n-tetradecyldimethylbenzylammonium chloride monohydrate, and a naphthylene-substituted quaternary ammonium chloride such as dimethyl-1-naphthylmethylammonium chloride.

Anionic surfactants are desirable in cleaning compositions because of their wetting and detersive properties. The anionic surfactants that can be used according to the disclosure include any anionic surfactant available in the cleaning industry. Suitable groups of anionic surfactants include sulfonates and sulfates. Suitable surfactants that can be provided in the anionic surfactant component include alkyl aryl sulfonates, secondary alkane sulfonates, alkyl methyl ester sulfonates, alpha olefin sulfonates, alkyl ether sulfates, alkyl sulfates, and alcohol sulfates.

Suitable alkyl aryl sulfonates that can be used in the cleaning composition can have an alkyl group that contains 6 to 24 carbon atoms and the aryl group can be at least one of benzene, toluene, and xylene. A suitable alkyl aryl sulfonate includes linear alkyl benzene sulfonate. A suitable linear alkyl benzene sulfonate includes linear dodecyl benzyl sulfonate that can be provided as an acid that is neutralized to form the sulfonate. Additional suitable alkyl aryl sulfonates include xylene sulfonate and cumene sulfonate.

Suitable alkane sulfonates that can be used in the cleaning composition can have an alkane group having 6 to 24 carbon atoms. Suitable alkane sulfonates that can be used include secondary alkane sulfonates. A suitable secondary alkane sulfonate includes sodium C ₁₄-C ₁₇ secondary alkyl sulfonate commercially available as Hostapur SAS from Clariant.

Suitable alkyl methyl ester sulfonates that can be used in the cleaning composition include those having an alkyl group containing 6 to 24 carbon atoms. Suitable alpha olefin sulfonates that can be used in the cleaning composition include those having alpha olefin groups containing 6 to 24 carbon atoms.

Suitable alkyl ether sulfates that can be used in the cleaning composition include those having between about 1 and about 10 repeating alkoxy groups, between about 1 and about 5 repeating alkoxy groups. In general, the alkoxy group will contain between about 2 and about 4 carbon atoms. A suitable alkoxy group is ethoxy. A suitable alkyl ether sulfate is sodium lauryl ether sulfate and is available under the name Steol CS-460.

Suitable alkyl sulfates that can be used in the cleaning composition include those having an alkyl group containing 6 to 24 carbon atoms. Suitable alkyl sulfates include, but are not limited to, sodium lauryl sulfate and sodium lauryl/myristyl sulfate.

Suitable alcohol sulfates that can be used in the cleaning composition include those having an alcohol group containing about 6 to about 24 carbon atoms.

The anionic surfactant can be neutralized with an alkaline metal salt, an amine, or a mixture thereof. Suitable alkaline metal salts include sodium, potassium, and magnesium. Suitable amines include monoethanolamine, triethanolamine, and monoisopropanolamine. If a mixture of salts is used, a suitable mixture of alkaline metal salt can be sodium and magnesium, and the molar ratio of sodium to magnesium can be between about 3: 1 and about 1: 1.

The cleaning composition, when provided as a concentrate, can include the additional anionic surfactant component in an amount sufficient to provide a use composition having desired wetting and detersive properties after dilution with water. The concentrate can contain about 0.1 wt. %to about 0.5 wt. %, about 0.1 wt. %to about 1.0 wt. %, about 1.0 wt. %to about 5 wt. %, about 5 wt. %to about 10 wt. %, about 10 wt. %to about 20 wt. %, 30 wt. %, about 0.5 wt. %to about 25 wt. %, and about 1 wt. %to about 15 wt. %, and similar intermediate concentrations of the anionic surfactant. In certain embodiments the composition is free of anionic surfactants.

Anti-Redeposition Agents

The compositions can optionally include an anti-redeposition agent capable of facilitating sustained suspension of soils in a cleaning solution and preventing the removed soils from being redeposited onto the substrate being cleaned. Examples of suitable anti-redeposition agents include fatty acid amides, fluorocarbon surfactants, complex phosphate esters, styrene maleic anhydride copolymers, and cellulosic derivatives such as hydroxyethyl cellulose, hydroxypropyl cellulose, and the like.

Bleaching Agents

Bleaching agents that may be used in a 2 in 1 cleaning and sanitizing foaming composition for lightening or whitening a substrate, include bleaching compounds capable of liberating an active halogen species, such as --Cl, --Br, --OCI and/or --Obr, under conditions typically encountered during the cleansing process. Suitable bleaching agents for use in the present compositions include, for example, chlorine-containing compounds such as a chlorine, hypochlorite, chloramine, and the like. Preferred halogen-releasing compounds include the alkali metal dichloroisocyanurates, chlorinated trisodium phosphate, the alkali metal hypochlorides, monochloramine and dichloramine, and the like. Encapsulated chlorine sources may also be used to enhance the stability of the chlorine source in the composition (see, for example, U.S. Pat. No. 4,618,914, the disclosure of which is incorporated by reference herein) . A bleaching agent may also be a peroxygen or active oxygen source such as hydrogen peroxide, perborates, sodium carbonate peroxyhydrate, phosphate peroxyhydrates, potassium permonosulfate, and sodium perborate mono and tetrahydrate, with and without activators such as tetraacetylethylene diamine, and the like. Optionally, the cleaning compositions include a minor but effective amount of a bleaching agent.

Detergent Fillers

The compositions can optionally include a minor but effective amount of one or more of a detergent filler which does not perform as a cleaning agent per se but cooperates with the cleaning agent to enhance the overall cleaning capacity of the composition. Examples of fillers suitable for use in the present compositions include sodium sulfate, sodium chloride, starch, sugars, C ₁-C ₁₀ alkylene glycols such as propylene glycol, and the like. Inorganic or phosphate-containing detergent builders may include alkali metal, ammonium and alkanolammonium salts of polyphosphates (e.g. tripolyphosphates, pyrophosphates, and glassy polymeric meta-phosphates) . Non-phosphate builders may also be used.

Corrosion Inhibitors

A corrosion inhibitor can be optionally included in the 2 in 1 cleaning and sanitizing foaming compositions in an amount sufficient to provide a use solution that exhibits a rate of corrosion that is less than the rate of corrosion an otherwise identical use solution except for the absence of the corrosion inhibitor. Examples of suitable corrosion inhibitors include but are not limited to: a combination of a source of aluminum ion and a source of zinc ion, as well as an alkaline metal silicate or hydrate thereof.

The corrosion inhibitor can refer to the combination of a source of aluminum ion and a source of zinc ion. The source of aluminum ion and the source of zinc ion provide aluminum ion and zinc ion, respectively, when the solid detergent composition is provided in the form of a use solution. The amount of the corrosion inhibitor is calculated based upon the combined amount of the source of aluminum ion and the source of zinc ion.

Anything that provides an aluminum ion in a use solution can be referred to as a source of aluminum ion, and anything that provides a zinc ion when provided in a use solution can be referred to as a source of zinc ion. It is not necessary for the source of aluminum ion and/or the source of zinc ion to react to form the aluminum ion and/or the zinc ion. Aluminum ions can be considered a source of aluminum ion, and zinc ions can be considered a source of zinc ion. The source of aluminum ion and the source of zinc ion can be provided as organic salts, inorganic salts, and mixtures thereof.

Exemplary sources of aluminum ion include but are not limited to: aluminum salts such as sodium aluminate, aluminum bromide, aluminum chlorate, aluminum chloride, aluminum iodide, aluminum nitrate, aluminum sulfate, aluminum acetate, aluminum formate, aluminum tartrate, aluminum lactate, aluminum oleate, aluminum bromate, aluminum borate, aluminum potassium sulfate, and aluminum zinc sulfate. Exemplary sources of zinc ion include, but are not limited to: zinc salts such as zinc chloride, zinc sulfate, zinc nitrate, zinc iodide, zinc thiocyanate, zinc fluorosilicate, zinc dichromate, zinc chlorate, sodium zincate, zinc gluconate, zinc acetate, zinc benzoate, zinc citrate, zinc lactate, zinc formate, zinc bromate, zinc bromide, zinc fluoride, zinc fluorosilicate, and zinc salicylate.

Fragrances and/or Dyes

Optionally, various dyes, fragrances including perfumes, and other aesthetic enhancing agents can also be included in the 2 in 1 cleaning and sanitizing foaming compositions. Dyes may be included to alter the appearance of the composition, as for example, Direct Blue 86 (Miles) , Fastusol Blue (Mobay Chemical Corp. ) , Acid Orange 7 (American Cyanamid) , Basic Violet 10 (Sandoz) , Acid Yellow 23 (GAF) , Acid Yellow 17 (Sigma Chemical) , Sap Green (Milliken &Company) , Metanil Yellow (Keystone Analine and Chemical) , Acid Blue 9 (Hilton Davis) , Sandolan Blue/Acid Blue 182 (Sandoz) , Hisol Fast Red (Capitol Color and Chemical) , Fluorescein (Capitol Color and Chemical) , Acid Green 25 (Ciba-Geigy) , and the like.

Fragrances or perfumes that may be included in the compositions include, for example, terpenoids such as citronellol, aldehydes such as amyl cinnamaldehyde, a jasmine such as ClS-jasmine or jasmal, vanillin, and the like.

Thickening Agent

Optionally, the compositions can include a thickening agent. Some examples of thickeners include soluble organic or inorganic thickener material. Some examples of inorganic thickeners include clays, silicates and other well-known inorganic thickeners. Some examples of organic thickeners include thixotropic and non-thixotropic thickeners. In some embodiments, the thickeners have some substantial proportion of water solubility to promote easy removability. Examples of useful soluble organic thickeners for the compositions of the invention comprise carboxylated vinyl polymers such as polyacrylic acids and sodium salts thereof, ethoxylated cellulose, polyacrylamide thickeners, xanthan thickeners, guargum, sodium alginate and algin by-products, hydroxy propyl cellulose, hydroxy ethyl cellulose and other similar aqueous thickeners that have some substantial proportion of water solubility. The thickening agents can be added to provide the desired viscosity.

Solvents

In some embodiments, the compositions may include a solvent. Exemplary solvents and solvent systems may include one or more different solvents including aromatic alcohols, alkanol amines, ether amines, amidines, esters, glycol ethers, and mixtures thereof. Representative solvents may include 1, 8-Diazabicyclo [5.4.0] undec-7-ene, or also may be referred to as 2, 3, 4, 6, 7, 8, 9, 10-Octahydropyrimidol [1, 2-a] azepine (or DBU) , 2.5.7.10-tetraoxaundecante (TOU) , acetamidophenol, acetanilide, acetophenone, 2-acetyl-1-methylpyrrole, glycerine, benzyl acetate, benzyl alcohol, methyl benzyl alcohol, alpha phenyl ethanol, benzyl benzoate, benzyloxyethanol, ethylene glycol phenyl ether, propylene glycol phenyl ether, amyl acetate, amyl alcohol, butanol, 3-butoxyethyl-2-propanol, butyl acetate, n-butyl propionate, cyclohexanone, diacetone alcohol, diethoxyethanol, diethylene glycol methyl ether, diisobutyl carbinol, diisobutyl ketone, dimethyl heptanol, dipropylene glycol tert-butyl ether, ethanol, ethyl acetate, 2-ethylhexanol, ethyl propionate, ethylene glycol methyl ether acetate, hexanol, isobutanol, isobutyl acetate, isobutyl heptyl ketone, isophorone, isopropanol, isopropyl acetate, methanol, methyl amyl alcohol, methyl n-amyl ketone, 2-methyl-1-butanol, methyl ethyl ketone, methyl isobutyl ketone, 1-pentanol, n-pentyl propionate, 1-propanol, n-propyl acetate, n-propyl propionate, propylene glycol ethyl ether, tripropylene glycol methyl ether, tripropylene glycol n-butyl ether, diethylene glycol n-butyl ether acetate, diethylene glycol monobutyl ether, ethylene glycol n-butyl ether acetate, ethylene glycol monobutyl ether, dipropylene glycol monobutyl ether, propylene glycol monobutyl ether, ethyl 3-ethoxypropionate, 2, 2, 4-Trimethyl-1, 3-Pentanediol Monoisobutyrate, diethylene glycol monohexyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, ethylene glycol methyl ether acetate, ethylene glycol monomethyl ether, dipropylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene glycol monomethyl ether, diethylene glycol monopropyl ether, ethylene glycol monopropyl ether, dipropylene glycol monopropyl ether and propylene glycol monopropyl ether. 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, borneol and its esters, citrals, ionenes, jasmine oil, limonene, dipentene, linalool and its esters. Representative 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, DBE-3, DBE-4, DBE-5, DBE-6, DBE-9, DBE-IB, and DBE-ME from DuPont Nylon. Representative phthalate esters include dibutyl phthalate, diethylhexyl phthalate and diethyl phthalate. An additional solvent may include Butylal (Formaldehyde Dibutyl Acetal) .

Preservatives

In some embodiments, the compositions of the present disclosure may include a preservative. Various preservative compositions known in the art may be employed. Generally, preservatives fall into specific classes including phenolics, halogen compounds, quaternary ammonium compounds, metal derivatives, amines, alkanolamines, nitro derivatives, biguanides, analides, organosulfur and sulfur-nitrogen compounds, alkyl parabens, and miscellaneous compounds. Some non-limiting examples of phenolic preservative agents include pentachlorophenol, orthophenylphenol, chloroxylenol, p-chloro-m-cresol, p-chlorophenol, chlorothymol, m-cresol, o-cresol, p-cresol, isopropyl cresols, mixed cresols, phenoxyethanol, phenoxyethylparaben, phenoxyisopropanol, phenyl paraben, resorcinol, and derivatives thereof. Some non-limiting examples of halogen compounds include sodium trichloroisocyanurate, sodium dichloroisocyanurate, iodine-poly (vinylpyrolidin-onen) complexes, and bromine compounds such as 2-bromo-2-nitropropane-1, 3-diol, and derivatives thereof. Some non-limiting examples of quaternary ammonium compounds include benzalkonium chloride, benzethonium chloride, behentrimonium chloride, cetrimonium chloride, and derivatives thereof. Some non-limiting examples of amines and nitro containing compounds include hexahydro-1, 3, 5-tris (2-hydroxyethyl) -s-triazine, dithiocarbamates such as sodium dimethyldithiocarbamate, and derivatives thereof. Some non-limiting examples of biguanides include polyaminopropyl biguanide and chlorhexidine gluconate. Some non-limiting examples of alkyl parabens include methyl, ethyl, propyl and butyl parabens. A further example of a suitable preservative includes those commercially-available under the tradename

CG/ICP (Rohm &Haas, Philadelphia Pa. ) .

Methods of Use

The compositions of the present disclosure are suited for 2 in 1 cleaning and sanitizing and/or disinfecting various hard surfaces and objects. The compositions are intended to be used on multiple types of surfaces and multiple types of soils. The 2 in 1 cleaning and sanitizing foaming compositions are efficacious at both cleaning and sanitizing a surface simultaneously without the need for multiple steps. In some aspects, the 2 in 1 cleaning and sanitizing foaming compositions are particularly well suited for clean-out-of-place (COP) applications. COP systems may include readily accessible systems including wash tanks, soaking vessels, mop buckets, holding tanks, scrub sinks, vehicle parts washers, non-continuous batch washers and systems, and the like.

Exemplary industries in which the methods of the present invention can be applied include, but are not limited to: the food and beverage industry, e.g., the dairy, cheese, sugar, meat processing, slaughtering, cake, snacks and brewery industries, including for example evaporator and pasteurizer cleaning, including mechanized slaughter line and batch freezer; oil processing industry; industrial agriculture and ethanol processing; and the pharmaceutical manufacturing industry.

In a further embodiment, methods of using the 2 in 1 cleaning and sanitizing foaming compositions may include removing a plurality of soils from various surfaces, such as industrial surfaces, agricultural or veterinary surfaces, air streams, food processing surfaces, food products, meat products, poultry, health care surfaces, various instruments, plants, plant products, vehicles, ware, and the like. The compositions can be applied in a variety of areas including kitchens, factories, and food plants, and can be applied to a variety of hard or soft surfaces having smooth, irregular or porous topography. Suitable hard surfaces include, for example, architectural surfaces (e.g., floors, walls, windows, sinks, tables, conveyors, counters and signs) ; eating utensils; hard-surface medical or surgical instruments and devices; and hard-surface packaging. Such hard surfaces can be made from a variety of materials including, for example, ceramic, metal, glass, wood or polymeric surface. The scope of the disclosure is not to be limited in any manner with respect to the methods of using the compositions.

In some aspects, the methods of using the compositions include applying or contacting the compositions to surface, e.g., industrial equipment surface, to clean using COP processes. Conventional COP processes are generally well known and are used to clean objects, surfaces, and equipment that cannot be cleaned where they are used and must be disassembled, and for pieces of equipment and parts that do not lend themselves to clean-in-place (CIP) processes. The COP process may include manual or machine washing.

A typical COP process to remove a soil (including organic, inorganic or a mixture of the two components) often includes at least three steps: and initial water rinse or previously used chemical rinse, the application of the 2 in 1 cleaning and sanitizing foaming compositions, and a final fresh water rinse. Additional steps may include a separate acid or alkaline wash as well as a separate sanitizing step, however, the 2 in 1 composition of the present disclosure substantially or completely eliminates the need for separate cleaning and sanitizing steps. The strength of the solutions, the duration of the cleaning steps, and the cleaning solution temperatures are typically dependent on the amount and tenacity of the soil. The water rinse removes any residual chemical solution and soils prior to the equipment being returned on-line for production purposes.

According to the methods, the use of COP methods for the 2 in 1 cleaning and sanitizing foaming compositions refers to use of submerging an object into the composition, spraying on the composition, wiping with the composition, flow through applications, or the like.

The 2 in 1 cleaning and sanitizing foaming compositions can be applied to surfaces using a variety of methods. 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. Without being limited to the contacting according to the invention, a concentrate or use liquid composition can be applied to or brought into contact with an object by any conventional method or apparatus for applying a liquid composition to an object. For example, the surface can be wiped with, sprayed with, foamed on, and/or immersed in the liquid compositions, or use liquid compositions made from the concentrated liquid 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.

The 2 in 1 cleaning and sanitizing foaming compositions are in contact with a surface or object for a sufficient amount of time to clean and sanitize the surface or object. In an aspect, 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 2 in 1 cleaning and sanitizing foaming compositions can be applied at a use or concentrate solution to a surface or object in need of cleaning. In an aspect, a use concentration of the compositions includes from about 0.01 wt-%to about 50 wt-%, including all ranges therebetween. However, in some embodiments, a concentrate composition may be employed and the dilution with water is not required.

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) . In other embodiments this step is not required, as the surface or object may be placed into a washing machine or ware washing machine for further treatment with a detergent composition. In some embodiments involving heavy soil deposits or stains, 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. 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. In yet other embodiments the composition is wiped off the soiled surface, effectively removing the soils and any remaining composition. In further aspects, there is no need for a rinse step.

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 150°F. In other embodiments, 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. In still other cases, methods provide for soil removal from surfaces or objects at colder temperature, e.g., about 25°F. to about 50°F. In other cases, the methods may require applying to surfaces or objects that range in temperature from 0°F to about 200°F.

EXAMPLES

The present disclosure is more particularly described in the following examples that are intended as illustrations only, since numerous modifications and variations within the scope of the present invention will be apparent to those skilled in the art. Unless otherwise noted, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples were obtained, or are available, from the chemical suppliers described below, or may be synthesized by conventional techniques.

Example 1

Soil Removal

For effective one-step cleaning and sanitizing, the composition should contain both a high-performance cleaning agent as well as a sanitizing agent. The cleaning agent must remain stable in the presence of the sanitizing agent and efficiently remove soils, particularly soils containing heavy fat and protein. A cleaning performance/soil removal test was designed to evaluate the heavy fat and protein soil removal capabilities of various test formulations.

Table 2 reports the various formulations made and tested. Note that percentages reported in this section only are total percentages of components as received from commercial vendors and in these tables, do include inert ingredients such as water or salts. In each instance where this occurs, the percentage of active component in the product as received from the vendor is listed and percent actives can easily be calculated from this information.

Table 2: Test Formulations N1-N7 (all components presented as wt. %)

A fat and protein food soil consisting of lard, oil, protein, and iron oxide (for color) was prepared. About 30g of lard was combined with about 30g of corn oil, about 15g of whole egg powder, and 15 grams of iron oxide.

The soil mixture was applied to a plurality of 3” x5” stainless steel panels with a foam brush, creating an even layer with approximately 0.25-0.3g of soil per panel. The panels were dried overnight to allow the bonds holding the triglycerides and proteins together in the soil to crystallize and interlink. The weight of each dried panel was recorded before testing.

Test formulations were prepared according to Table 2. A commercially available hard surface cleaner was also tested for comparison. 800g of each formulation (per replicate) were used to create a soaking solution and placed in separate 1000ml beakers. The prepared, dried panels were fully submerged in the test formulations and the formulations were stirred at room temperature for 10 minutes, which is typical soil removal time for 2%active NaOH as a benchmark. The panels were then removed from the formulations using metal tongs and rinsed with low-pressure deionized water for 1 minute. The rinsed panels were then allowed to dry overnight at room temperature.

The next day, final weights were taken of the dried panels. Based on the initial and final weights of the panels, the average %soil removal was calculated for each formulation tested, including the commercially available hard surface cleaner. The results are presented in Table 3 below.

Table 3

The cleaning performance results in Table 3 demonstrate that the formulations with low wt. %water and increased wt. %of NaOH and betaine-based surfactants cleaned better than the commercially available product. The results are shown graphically in Fig. 1.

The overall success of the test formulations in the soil removal test demonstrates that high performing cleaning agents can remain stable when combined with a sanitizing agent. Thus, these formulations can provide an effective 2 in 1 composition that both cleans and sanitizes at the same time without the need for multiple steps.

Example 2

Foaming Performance

Consumers desire esthetic formulations that are quick to produce a dense and rigid foam. A foaming performance test was designed to evaluate the foamability and foam stability of various test formulations. The same test formulations as presented in Table 2 and tested in Example 1 were evaluated for foaming performance.

The formulations of Table 2 were prepared into 2% (w/v) solutions using 1L of room temperature water and mixed sufficiently. The solution was transferred to the foam machine and circulation was started. Foamability was tested by recording the time for each formulation to reach a foam height of 25cm. To test foam stability, foam height and pictures were taken every 5 minutes for 30 minutes.

The results are presented in Table 4 below. Foaming time is reflective of foamability and is the time each formulation took to reach a foam height of 25cm. Height difference is reflective of foam stability and was calculated by comparing the foaming height at 0 minutes to the foaming height at 30 minutes.

Table 4: Foaming Performance of N1-7 and Commercially Available Hard Surface Cleaner.

Table 4 demonstrates that increasing the alkalinity of the formulation by increasing the amount of NaOH does not hinder foam production or stability and, in fact, increases foaming performance. All test formulations demonstrated superior foamability and foam stability compared to the commercially available product, with N1, N3, and N4 having the best overall foaming performance likely due to the higher wt. %of NaOH and surfactants. The results for N1, N3, and N4 are presented graphically in Figs. 2A and 2B.

Test formulations N3 and N4 demonstrated superior performance in both the soil removal test and foam performance test. Relative to the other test formulations, N3 and N4 have the lowest wt. %of water and the highest wt. %of NaOH. N3 and N4 performed better overall than other test formulations with the same surfactant profile but lower wt. %of NaOH, indicating that increasing NaOH in a formulation will improve cleaning and foaming performance.

Claims

A sanitizing cleaning composition comprising:

a amphoteric biocide;

at least one nonionic surfactant;

an alkalinity source; and

water.
The sanitizing cleaning composition of claim 1, wherein the cationic biocide is alkyl dimethyl benzyl ammonium chloride (ADBAC) , alkyl dimethyl ethylbenzyl ammonium chloride, dialkyl dimethyl ammonium chloride, benzethonium chloride, N, N-bis- (3-aminopropyl) dodecylamine, , an organic salt of a quaternary ammonium containing compound, or an inorganic salt of a quaternary ammonium containing compound.
The sanitizing cleaning composition of claims 1 or 2, wherein the composition comprises from about 0.01 wt. %to about 20 wt. %of the cationic biocide.
The sanitizing cleaning composition of any one of claims 1-3 wherein the at least one amphoteric surfactant is an alkyl amine oxide, alkyl ether amine oxide, alkyl alcohol alkoxylate, aryl alcohol alkoxylate, substituted alcohol alkoxylate, block nonionic copolymer, heteric nonionic copolymer, alkanolamide, substituted amide, polyethoxylated glycerol derivative, or a mixture thereof.
The sanitizing cleaning composition of any one of claims 1-4, wherein the composition comprises from about 0.1 wt. %to about 25 wt. %of the at least one nonionic surfactant.
The sanitizing cleaning composition of any one of claims 1-5, wherein the alkalinity source is an alkali or alkaline earth metal borate, silicate, carbonate, hydroxide, .
The sanitizing cleaning composition of any one of claims 1-6, wherein the composition comprises from about 1 wt. %to about 60 wt. %of the alkalinity source.
The sanitizing cleaning composition of any one of claims 1-7, wherein the composition comprises from about 10 wt. %to about 40 wt. %of the alkalinity source.
The sanitizing cleaning composition of any one of claims 1-8, wherein the composition has a pH larger than 7.0.
The sanitizing cleaning composition of claim 1, further comprising a foam boosting surfactant.
The sanitizing cleaning composition of claim 10, wherein the foam boosting surfactant is an alkyl polyglucoside.
The sanitizing cleaning composition of claim 1, further comprising one or more amphoteric foam stabilizers.
The sanitizing cleaning composition of claim 12, wherein the one or more amphoteric foam stabilizers is selected from the group consisting of imidazolines, imidazoline derivatives, isethionates, betaine derivatives, amphoacetate derivatives, propionates, and mixtures thereof.
The sanitizing cleaning composition of claim 1, further comprising a metal protecting silicate.
The sanitizing cleaning composition of claim 14, wherein the metal protecting silicate is sodium silicate, potassium silicate, potassium metasilicate, or sodium metasilicate.
The sanitizing cleaning composition of any one of claims 1-15, wherein the composition is substantially free of anionic surfactants.
A method of sanitizing and cleaning a surface and/or object comprising:

contacting the surface and/or object with a sanitizing cleaning composition comprising a cationic biocide, at least one nonionic surfactant, an alkalinity source, and water.
The method of claim 17, wherein the sanitizing cleaning composition comprises from about 0.01 wt. %to about 20 wt. %of the cationic biocide, from about 0.1 wt. %to about 25 wt. %of the at least one nonionic surfactant, and from about 1 wt. %to about 60 wt.%of the alkalinity source.
The method of claims 17 or 18, wherein the composition has a pH larger than 7.0.
The method of any one of claims 17-19, wherein the method comprises a clean-out-of-place (COP) application.