Hard surface cleaner

Abstract

The present invention provides biosurfactants for efficiently cleaning contaminants and / or fouling substances such as paints, molds, and algae from, for example, porous surfaces and / or for enhancing the cleaning of contaminants from non-porous surfaces, and their use.

Description

Technical Field

[0001] Cross - Reference to Related Applications This application claims priority to U.S. Provisional Patent Application No. 63 / 389,144, filed on July 14, 2022, which is hereby incorporated by reference in its entirety.

Background Art

[0002] Background Vandalism refers to the unauthorized spraying of paint or the application of chalk, dyes, permanent ink, or any other substance to mark buildings, fences, buses, trains, road signs, bridges, or similar locations or surfaces. Removing vandalism is difficult because there is a wide variety of marking materials, many of which are inherently difficult to remove, and there are also many types of surfaces on which they are applied. These surfaces include acrylic, aluminum, brick, ceramic, concrete, glass, metal, stainless steel, masonry, blocks, stone, aggregate panels, asphalt surfaces, non - integrated wood, painted surfaces, and some plastics. In particular, porous surfaces such as untreated wood, concrete, stone, and brick are difficult to clean considering that the markings can penetrate deep into the pores of the surface.

[0003] Common methods for dealing with vandalism include removal by chemical treatment, laser removal, abrasive methods such as sandblasting, or repainting the vandalism. Each method has disadvantages in terms of cost, labor, and environmental impact.

[0004] Chemical graffiti removal has conventionally involved applying a cleaning agent (usually containing a diluted solvent) to the surface to be cleaned; waiting for the agent to dissolve the graffiti, and optionally applying or rubbing the agent on the surface to enhance the cleaning effect; and high-pressure washing with warm water. Cleaning compositions typically contain a relatively water-insoluble solvent, as well as emulsifiers and / or surfactants for formulation. Many of these components are considered carcinogenic and / or contaminating in addition to having insufficient penetration of the soiled porous surface (e.g., surfactants such as sodium lauryl sulfate and sodium octyl sulfate, and solvents such as cyclohexanone).

[0005] Residues of both cleaning agents and paints pose a threat not only to the workers performing the graffiti removal but also to the environment. For example, the heat of the water increases the evaporation and fume formation of the cleaning agent, and the cleaning agent / warm water mixture typically remains in the environment along with the removed paint. Thus, while dilution of the cleaning agent is common, the overall cleaning effect is reduced. Additionally, cleaning agents usually need to remain on the surface for a long time to be effective and are typically highly specialized for that purpose and thus expensive.

[0006] Using high-pressure water jets to remove graffiti can also cause significant damage to the surface being cleaned, which is especially true when warm water is combined with an abrasive substance, creating a sandblasting effect. Such substances are often used to remove particularly difficult graffiti. Additionally, the high-pressure jets applied to the contaminated surface can even push the graffiti deeper into the pores of the surface and thus function contrary to its own purpose. Furthermore, conventional graffiti removal equipment is large, complex, heavy, and consumes large amounts of cleaning agent, water, and energy for heating and pressurization.

[0007] Repainting or recoating the surface is perhaps the least effective and least economical way to repair graffiti. It is necessary to use a paint that can cover the graffiti so that it cannot be seen through. In many cases, the paint needs to be applied several times, resulting in a finish that is different from the original finish of the surface.

[0008] The problems faced when removing graffiti from surfaces, especially porous surfaces, are always present for companies and government agencies trying to repair soiled and damaged property. However, these problems do not stop at just graffiti. For example, cleaning other hard porous surfaces such as wood, concrete, siding or plaster contaminated with algae or mold often requires a similar high-pressure solvent-based treatment. Additionally, the contamination of porous stone surfaces by pathogens and food particles in homes and kitchens is an important safety concern.

[0009] Seals and coatings can help block the pores of the surface and prevent the intrusion of contaminants and liquids. However, when seals and coatings are not practical or do not function, a method for cleaning these porous surfaces is necessary to restore the underlying surface.

[0010] Consumers are increasingly demanding cleaning products that can remove contaminants and fouling from surfaces, especially porous surfaces, while reducing their environmental impact. These safer and more sustainable products are still expected to provide performance equivalent to that of conventional products. Since there are limited natural or sustainable materials to meet these needs, formulating safe and environmentally friendly cleaning compositions remains a challenge. Therefore, there is a need for improved cleaning compositions that are effective in penetrating porous surfaces and reduce complete dependence on synthetic-derived components. SUMMARY OF THE INVENTION

[0011] The present invention provides microbial-derived products, as well as methods of using them, for maintaining and / or improving the cleanliness and appearance of porous and non-porous surfaces, for example, by efficiently removing contaminants from such surfaces. Such contaminants can include, but are not limited to, paints, inks, dyes, algae, molds, food particles, fats, oils, greases, dirt, scale, and / or biofilms. In certain embodiments, the compositions and methods are useful for removing scribbles from surfaces including porous surfaces. In other certain embodiments, the compositions and methods are useful for removing molds and algae from surfaces.

[0012] Advantageously, the present invention uses biodegradable components, which can be used alone and / or in combination with conventional cleaning chemicals. In certain embodiments, the present invention enhances the effect of conventional cleaning compositions when used in combination therewith.

[0013] In a preferred embodiment, the present invention provides a cleaning composition comprising one or more glycolipid biosurfactants. In some embodiments, the cleaning composition further comprises one or more surfactants, one or more solvents, one or more alkaline soaps, one or more acids, one or more bleaching agents and / or one or more disinfectants in combination with the glycolipid(s).

[0014] The surfactant(s) can be any nonionic, cationic, anionic or zwitterionic surfactant, or a blend of two or more of these types. Preferably, the surfactant is a non-biological surfactant. Further, the solvent(s) can be any known solvent that is compatible with the glycolipid and / or surfactant, such as, for example, glycol ethers, dibasic esters, ketones, terpenes, and / or water.

[0015] Examples of glycolipid biosurfactants according to the present invention include sophorolipids, mannosylerythritol lipids, rhamnolipids, trehalose lipids, and / or cellobiose lipids. The glycolipids can be used in the form naturally produced by microorganisms and / or can be chemically treated, for example, to change the chemical structure and / or function of the molecule. In some embodiments, a mixture of glycolipids and / or derivatives of glycolipids can be used, for example, depending on the surface to be cleaned or the contaminant.

[0016] In one embodiment, the glycolipid is a sophorolipid (SLP) including any form, isoform or isomer thereof, for example, acid type (linear) SLP and lactone type SLP. Further included are monoacetylated SLP, diacetylated SLP, esterified SLP, etherified SLP, SLP having various hydrophobic chain lengths, SLP bound with an amino acid complex, and others including those specifically exemplified and / or not exemplified in the present disclosure.

[0017] In one embodiment, the glycolipid is a mannosylerythritol lipid (MEL) including any form, isoform or isomer thereof, for example, triacylated, diacylated, monoacylated, triacetylated, diacetylated, monoacetylated and non-acetylated MEL. Other mannose-based substances / MEL-like substances showing similar structures and similar properties, for example, mannosyl-mannitol lipid (MML), mannosyl-arabitol lipid (MAL), and / or mannosyl-ribitol lipid (MRL) can also be used according to the present invention.

[0018] In one embodiment, the glycolipids and glycolipid blends according to the present invention can serve as active ingredients of an environmentally friendly cleaning composition for porous surfaces and to enhance the cleaning of non-porous surfaces. In one embodiment, the glycolipids and glycolipid blends serve as enhancers for conventional cleaning compounds.

[0019] In certain embodiments, the cleaning compositions according to the present invention are effective due to amphiphilic substance-mediated penetration into pores in the contaminated surface. For example, in some embodiments, the SLP forms micelles, where the micelles have a size of less than about 100 μm, less than about 10 μm, less than about 1 μm, less than about 100 nm, less than about 50 nm, less than about 25 nm, less than about 15 nm or less than about 10 nm, less than about 5 nm, or less than about 2 nm. The small size and amphiphilic nature of the micelles enhance penetration into the pores and can increase contact with contaminants therein. In some embodiments, the glycolipid serves as a vehicle to facilitate the transport of a solvent or other cleaning chemical into the pores of the contaminated surface.

[0020] Optionally, the conditioning composition can further comprise one or more other components including, for example, essential oils, plant extracts, cross-linking agents, chelating agents, fatty acids, alcohols, pH adjusters, reducing agents, syndetic, buffers, enzymes, dyes, colorants, fragrances, preservatives, emulsifiers, foaming agents, polymers, thickeners and / or viscosity modifiers.

[0021] In a preferred embodiment, the present invention further provides a method for cleaning a porous surface and / or for improving the cleaning of a non-porous surface by applying a cleaning composition according to the present invention to the surface.

[0022] In certain embodiments, the surface is a porous material, where the contaminants are present on the surface of the material and / or within the pores of the material. In some embodiments, the method is particularly useful for removing contaminants that are difficult to remove from the porous surface, including, for example, scribbles, paints, permanent inks, dyes, and molds and algae. Further, the method can be used to enhance the efficiency of cleaning these and other contaminants from non-porous surfaces.

[0023] The cleaning composition can be applied to the surface by spraying, for example, using a spray bottle or a pressurized spraying device. The cleaning composition can also be applied using a cloth or a brush, where the composition is rubbed, spread, or painted on the surface. Further, the cleaning composition can be applied to the surface by dipping, soaking, or submerging the surface in a container having the cleaning composition therein.

[0024] In one aspect, the surface is allowed to soak in the cleaning composition thereon for a time sufficient to remove contaminants. For example, the immersion can be carried out for up to 5 minutes to 24 hours or more, as required.

[0025] In one aspect, the method further includes the step of removing the cleaning composition and contaminants from the surface. This can be achieved, for example, by rinsing the surface with water or spraying water on the surface, and / or by rubbing or wiping the surface with a cloth until the cleaning composition and contaminants are removed from the surface. Rinsing or spraying with water can be done before and / or after rubbing or wiping the surface with a cloth. In some aspects, the spraying is carried out under high pressure and / or high temperature.

[0026] In another aspect, mechanical methods can be used to remove contaminants and / or the cleaning composition from the surface after application of the cleaning composition. For example, a sand blaster, agitator, drill, hammer, sandpaper, or scraper can be used to remove contaminants that are particularly difficult to remove from the surface due to, for example, the amount or type of contaminants.

[0027] Advantageously, the present compositions and methods improve the safety and environmental impact of cleaning contaminants that are difficult to remove, for example, in public, home, commercial, medical, and industrial settings, and in the presence of humans, plants, and animals. Further, the compositions and methods utilize biodegradable and toxicologically safe components, thereby reducing the amount of harsh cleaning chemicals required to achieve the desired level of cleaning.

DETAILED DESCRIPTION OF THE INVENTION

[0028] DETAILED DESCRIPTION The present invention provides microbial-derived products, and methods of using them, for maintaining and / or improving the cleanliness and appearance of porous and non-porous surfaces by efficiently removing contaminants therefrom, for example.

[0029] SELECTED DEFINITIONS As used herein, a “green” compound or material means that at least 95% is derived from natural, biological, and / or renewable sources such as plants, animals, minerals, and / or microorganisms, and further, the compound or material is biodegradable. Additionally, in some embodiments, a “green” compound or material exhibits minimal toxicity to humans and may have an LD50 > 5000 mg / kg. A “green” product preferably does not include any of the following: non-plant-based ethoxylated surfactants, linear alkylbenzene sulfonates (LAS), ether sulfate surfactants, or nonylphenol ethoxylates (NPE). In one preferred embodiment, the glycolipid molecules, including derivatized glycolipid molecules, described herein are “green” compounds with minimal toxicity to the user.

[0030] As used herein, "biofilm" is a complex aggregate of microorganisms, such as bacteria, yeast, or fungi, wherein the cells adhere to each other and / or to a surface using an extracellular matrix. The cells in a biofilm are physiologically distinct from the planktonic cells of the same organisms, which are single cells that can float or swim in a liquid medium.

[0031] As used herein, "contaminant" refers to any substance that soils or impurifies another substance or object. Contaminants can be living or non-living, and can be inorganic or organic substances or deposits. Further, contaminants can include, but are not limited to, paints, inks, and dyes; hydrocarbons, such as petroleum or asphaltene; fats, oils, and greases (FOG), such as cooking grease, plant-derived oils, and lard; lipids; waxes, such as paraffin; resins; microorganisms, such as bacteria, biofilms, viruses, fungi, molds, mildew, protozoa, parasites, or other infectious microorganisms; stains; or any other substance referred to, for example, as dirt, dust, scale, sludge, clad, slag, grime, scum, plaque, deposit, or residue.

[0032] As used herein, "fouling" means the accumulation or deposition of contaminants on the surface (e.g., a piece) of a device such that the structural and / or functional integrity of the device is impaired. Fouling can cause clogging, blockage, degradation, corrosion, and other related problems, and can occur on both metallic and non-metallic materials and / or surfaces. Fouling that results from living organisms, such as biofilms, is referred to as "biofouling".

[0033] As used herein, "cleaning" in the context of contaminants or fouling means the removal or reduction of contaminants from a material and / or surface.

[0034] As used herein, "disinfecting" means controlling or substantially controlling harmful microorganisms within 10 minutes, preferably within 5 minutes, more preferably within 2 minutes after the contact time (i.e., exposure time) between the composition and the harmful microorganisms.

[0035] As used herein, "controlling" in the context of microorganisms means killing, immobilizing, destroying, removing, reducing the number of individuals, and / or otherwise preventing the microorganisms from multiplying and / or causing substantial harm or fouling.

[0036] In a preferred embodiment, the harmful microorganisms are "substantially controlled", i.e., at least 90%, preferably at least 95%, more preferably at least 99% of the population of microorganisms within a specific area is controlled.

[0037] In a preferred embodiment, 100% of the harmful microorganisms are controlled, meaning that the surface and / or material is "sanitized".

[0038] As used herein, "harmful" or "pathogenic" microorganisms refer to any unicellular or acellular organisms that can cause infection, disease, or other forms of harm to other organisms. As used herein, pathogenic microorganisms are infectious agents and can include, for example, bacteria, cyanobacteria, biofilms, viruses, virions, viroids, fungi, molds, yeasts, protozoa, prions, and algae. In certain embodiments, harmful microorganisms can include, for example, certain parasites, helminths, nematodes, and / or multicellular organisms such as lichens.

[0039] As used herein, to "prevent" a situation or event means to avoid, delay, preclude, or minimize the onset of specific signs or symptoms of the situation or event. Prevention can be absolute or complete, but need not necessarily be so, meaning that the situation or event may still occur later. Prevention can include reducing the severity of the onset of the situation or event and / or suppressing the progression of the situation or event to a more severe one.

[0040] As used herein, "surfactant" refers to a substance or compound that, when dissolved in water or an aqueous solution, reduces the surface tension, or a substance or compound that reduces the interfacial tension between two liquids or between a liquid and a solid. Thus, the term "surfactant" includes cationic, anionic, nonionic, zwitterionic, amphoteric agents and / or combinations thereof. "Biosurfactant" means a surfactant produced by living cells and / or using natural sources.

[0041] As used herein, "basic surfactant" refers to a surfactant or amphiphilic molecule that is oriented perpendicular to the interface and shows a strong tendency to adsorb to the interface in a relatively regular manner.

[0042] As used herein, the term "syndetic" (which means to bind or connect so as to mix water and oil) refers to a relatively weak amphiphilic substance that shows a significant ability to adsorb to the oil-water interface (from the aqueous phase and thus "hydrophilic syndetic", or from the oil phase and thus "hydrophobic syndetic") only when the interface already has an adsorption layer of a basic surfactant or a mixture of basic surfactants. The adsorption of syndetics at the oil-water interface is very beneficial for the generation of a very low oil-water interfacial tension, which is thought to affect the spacing and / or order of the adsorbed normal surfactants in a way that increases the solubilization of oil and / or the removal of oil from solid materials and / or surfaces.

[0043] As used herein, an "isolated" or "purified" nucleic acid molecule, polynucleotide, polypeptide, protein, or organic compound, such as a small molecule, is substantially free of other compounds that are associated with it in its natural state, such as cellular material. A purified or isolated polynucleotide (ribonucleic acid (RNA) or deoxyribonucleic acid (DNA)) does not contain the genes or sequences that flank it in its natural occurrence. A purified or isolated polypeptide does not contain other molecules, or the amino acids that flank it in its natural occurrence. An "isolated" strain means that the strain has been removed from the environment in which it naturally occurs. Thus, an isolated strain can exist, for example, as a biologically pure culture or as spores (or other forms of this strain).

[0044] In certain embodiments, a purified compound is at least 60% by weight the compound of interest. Preferably, the preparation is at least 75% by weight, more preferably at least 90% by weight, and most preferably at least 99% by weight the compound of interest. For example, a purified compound can be at least 90%, 91%, 92%, 93%, 94%, 95%, 98%, 99%, or 100% (w / w) the desired compound. Purity is measured by any suitable standard method, for example, by column chromatography, thin layer chromatography, or high performance liquid chromatography (HPLC) analysis.

[0045] The ranges provided herein are to be understood as a shorthand representation of all values within the range. For example, a range of 1 - 20 is understood to include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20, as well as any number, combination of numbers, or sub-ranges from the group consisting of all intervening decimal values between the aforementioned integers, such as 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. With respect to sub-ranges, "nested sub-ranges" extending from either endpoint of the range are specifically contemplated. For example, nested sub-ranges of an exemplary range of 1 - 50 can include 1 - 10, 1 - 20, 1 - 30, and 1 - 40 in one direction, or 50 - 40, 50 - 30, 50 - 20, and 50 - 10 in the other direction.

[0046] As used herein, "decreasing" means a negative change, "increasing" means a positive change, and the change is at least 0.001%, 0.01%, 0.1%, 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99%, or 100%, including all values therebetween.

[0047] The transitional term "comprising", which is synonymous with "including" or "containing", is inclusive or open-ended and does not exclude additional, unrecited elements or method steps. In contrast, the transitional phrase "consisting of" excludes elements, steps, or components not specified in the claim. The transitional phrase "consisting essentially of" limits the scope of the claim to the specified materials or steps and "those that do not materially affect the basic and novel characteristics (singular or plural) of the claimed invention". The use of the term "comprising" contemplates other aspects consisting of or consisting essentially of the recited component(s).

[0048] Unless otherwise specified or clear from the context, as used herein, the term "or" is understood to be inclusive. Unless otherwise specified or clear from the context, as used herein, the terms "a", "an", and "the" are understood to be singular or plural.

[0049] Unless otherwise specified or clear from the context, as used herein, the term "about" is understood to be within the normal tolerance in the art, e.g., within two standard deviations of the mean value. About can be understood to be within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value.

[0050] The recitation of a list of chemical groups in any definition of a variable herein includes the definition of that variable as any single group or combination of the listed groups. The recitation of embodiments for a variable or aspect herein includes that embodiment as any single embodiment or in combination with any other embodiment or part thereof. All references cited herein are incorporated herein by reference.

[0051] Detergent composition In a preferred embodiment, the present invention provides a detergent composition comprising one or more glycolipid biosurfactants. In some embodiments, the detergent composition further comprises one or more additional surfactants, one or more solvents, one or more alkali soaps, one or more acids, one or more bleaching agents and / or one or more disinfectants in combination with the glycolipid(s).

[0052] Biosurfactants are amphiphilic molecules consisting of both a hydrophobic domain (e.g., fatty acid) and a hydrophilic domain (e.g., sugar). Due to their amphiphilic nature, biosurfactants can partition at the interface between different fluid phases such as the oil / water or water / air interface. Unlike synthetic surfactants, biosurfactants can be effective in warm water, cold water, or at either extreme of the pH scale. Furthermore, biosurfactants are biodegradable and non-toxic.

[0053] Examples of glycolipid biosurfactants according to the present invention include, for example, sophorolipids, mannosylerythritol lipids, rhamnolipids, trehalose lipids and / or cellobiose lipids. Glycolipids can be used in the form naturally produced by microorganisms and / or can be isolated and further subjected to chemical treatment, for example, to change the chemical structure and / or function of the molecule. In some embodiments, mixtures of glycolipids and / or derivatives of glycolipids can be used, for example, depending on the surface to be cleaned or the contaminant.

[0054] In certain aspects of the present invention, sophorolipids (SLPs) are specific glycolipids of interest. Sophorolipids are, for example, glycolipid biosurfactants produced by various yeasts of Starmerella bombicola. SLPs consist of the disaccharide sophorose linked to a long-chain hydroxy fatty acid. They can include a partially acetylated 2-O-β-D-glucopyranosyl-D-glucopyranose unit β-glycosidically linked to 17-L-hydroxyoctadecanoic acid or 17-L-hydroxy-Δ9-octadecenoic acid. The hydroxy fatty acid can have, for example, 11 to 20 carbon atoms and may contain one or more unsaturated bonds. Further, the sophorose residue can be acetylated at the 6- and / or 6'-position. The fatty acid carboxyl group may be free (acid form or linear form) or may be internally esterified at the 4''-position (lactone form). In most cases, fermentation of SLP results in a mixture of hydrophobic (water-insoluble) SLPs, including, for example, lactone-type SLP, monoacetylated linear SLP, and diacetylated linear SLP, and hydrophilic (water-soluble) SLPs, including, for example, non-acetylated linear SLP.

[0055] As used herein, the terms “sophorolipid,” “sophorolipid molecule,” “SLP,” or “SLP molecule” include all forms of SLP molecules, including, for example, acid-type (linear) SLP and lactone-type SLP, and their isomers. Further included are monoacetylated SLP, diacetylated SLP, esterified SLP, SLPs having various hydrophobic chain lengths, SLPs to which fatty acid-amino acid complexes are attached, and others, including those described and / or not described in the present disclosure.

[0056] In some aspects, SLP molecules can be represented by general formula (1) and / or general formula (2), having different fatty acid chain lengths (R 3 ), and in some cases, including more than 30 structural homologs having acetylation or protonation at R 1 and / or R 2 . TIFF2025524626000001.tif42157

[0057] In general formula (1) or (2), R 0 can be either a hydrogen atom or a methyl group. R 1 and R 2 are each independently a hydrogen atom or an acetyl group. R 3 is a saturated aliphatic hydrocarbon chain or an unsaturated aliphatic hydrocarbon chain having at least one double bond, and may have one or more substituents.

[0058] Non-limiting examples of substituents include halogen atoms, hydroxyl, lower (C1-C6) alkyl groups, halo-lower (C1-C6) alkyl groups, hydroxy-lower (C1-C6) alkyl groups, halo-lower (C1-C6) alkoxy groups, and others such as those described in the present disclosure. R 3 can have, for example, 11 to 20 carbon atoms.

[0059] Fermentation of yeast cells in a culture medium containing sugars and / or lipids and fatty acids having carbon chains of different lengths can be used to produce various SLP. Starmerella (Candida) bombicola is one of the most widely recognized producing strains of SLP. Typically, this yeast produces both lactone-type SLP and linear SLP during fermentation, with about 60-70% of the SLP being composed of the lactone type and the remainder being composed of the lactone type.

[0060] In certain embodiments, the ratio of linear SLP to lactone-type SLP in the composition is the ratio obtained from a standard fermentation process. In certain embodiments, the ratio is adjusted. For example, the percentage ratio of linear SLP to lactone-type SLP can be 1:99 to 99:1, 10:90 to 90:10, 20:80 to 80:20, 30:70 to 70:30, 40:60 to 60:40, or 50:50.

[0061] In certain embodiments, mannosylerythritol lipids (MELs) are glycolipids of interest. MELs contain, as a hydrophilic moiety, either 4-O-β-D-mannopyranosyl-meso-erythritol or 1-O-β-D-mannopyranosyl-meso-erythritol, and, as a hydrophobic moiety, a fatty acid group and / or an acetyl group. One or two of the hydroxyls can typically be acetylated at C4 and / or C6 of the mannose residue. Further, there can be 1 to 3 esterified fatty acids with a chain length of 8 to 12 carbons or more.

[0062] MELs and MEL-like substances (e.g., mannose-based substances) are produced mainly by Pseudozyma species (e.g., P. aphidis) and Ustilago species (e.g., U. maydis), and there are significant differences between the MEL structures produced by each species. Certain mannose-based substances with properties similar to MELs can also be produced by the yeast Meyerozyma guilliermondii.

[0063] MELs are non-toxic and stable over a wide temperature and pH range. Further, MELs can be used without additional preservatives.

[0064] MELs can be produced in over 93 different combinations classified into five main categories: MEL A, MEL B, MEL D, triacetylated MEL A, and triacetylated MEL B / C. These molecules can be modified either synthetically or in nature. For example, MELs can contain different carbon chain lengths or different numbers of acetyl and / or fatty acid groups.

[0065] MEL molecules and / or modified forms thereof according to the present invention can include, for example, triacylated, diacylated, monoacylated, triacetylated, diacetylated, monoacetylated, and non-acetylated MELs, as well as stereoisomers and / or structural isomers thereof.

[0066] Other mannose-based substances / MEL-like substances that exhibit similar structures and similar properties, such as mannosyl-mannitol lipid (MML), mannosyl-arabitol lipid (MAL), and / or mannosyl-ribitol lipid (MRL) can also be used according to the present invention.

[0067] In certain embodiments, a mixture of SLP and MEL is used in the cleaning composition, where the ratio of SLP to MEL is from 1:99 to 99:1, 10:90 to 90:10, 20:80 to 80:20, 30:70 to 70:30, 40:60 to 60:40, or 50:50.

[0068] In certain embodiments, the glycolipids and glycolipid blends according to the present invention can serve as active ingredients of environmentally friendly cleaning compositions for porous surfaces and to enhance the cleaning of non-porous surfaces. In certain embodiments, the glycolipids and glycolipid blends serve as enhancers for conventional cleaning compounds.

[0069] In certain embodiments, the cleaning compositions according to the present invention are effective due to amphiphilic substance-mediated penetration of pores in the contaminated surface. For example, in some embodiments, SLP forms micelles, where the micelles have a size of less than about 100 μm, less than about 10 μm, less than about 1 μm, less than about 100 nm, less than about 50 nm, less than about 25 nm, less than about 15 nm or less than about 10 nm, less than about 5 nm, or less than about 2 nm. The small size and amphiphilic properties of the micelles enhance penetration into the pores and can increase contact with contaminants therein. In some embodiments, the glycolipids serve as vehicles to facilitate the transport of solvents or other cleaning chemicals into the pores of the contaminated surface.

[0070] The amount of the glycolipid(s) in the composition can range, for example, from about 1 ppm to 25 wt%, 5 ppm to 20 wt%, 10 ppm to 15 wt%, 25 ppm to 10 wt%, 50 ppm to 8 wt%, or 100 ppm to 5 wt%.

[0071] In one aspect, the composition comprises glycolipid(s) in combination with one or more chemical surfactants. The surfactant(s) can be any nonionic, cationic, anionic or zwitterionic surfactant, or a blend of two or more of these types. A surfactant is a surface-active agent having two functional groups, namely, a hydrophilic (water-soluble) or polar group and a hydrophobic (oil-soluble) or nonpolar group. The hydrophobic group is usually a long hydrocarbon chain (C8-C18) which may or may not be branched, while the hydrophilic group is formed by moieties such as carboxylate, sulfate, sulfonate (anionic), alcohol, polyoxyethylenated chain (nonionic), and quaternary ammonium salt (cationic).

[0072] The surfactants according to the present composition, method, and composition include ammonium lauryl sulfate, sodium lauryl sulfate (also called SDS or sodium dodecyl sulfate), alkyl ether sulfate, sodium laureth sulfate (also known as sodium lauryl ether sulfate, SLES), sodium myreth sulfate; docusate, sodium dioctyl sulfosuccinate, perfluorooctane sulfonate (PFOS), perfluorobutane sulfonate, linear alkylbenzene sulfonate (LAB), alkyl-aryl ether phosphate, alkyl ether phosphate; carboxylate, alkyl carboxylate (soap), sodium stearate, sodium lauroyl sarcosinate, carboxylic acid-based fluorosurfactant, perfluorononanoate, perfluorooctanoate; cationic surfactant, pH-dependent primary, secondary, or tertiary amine, octenidine dihydrochloride, permanently charged quaternary ammonium cation, alkyltrimethylammonium salt, cetyltrimethylammonium bromide (CTAB) (also known as hexadecyltrimethylammonium bromide), cetyltrimethylammonium chloride (CTAC), cetylpyridinium chloride (CPC), benzalkonium chloride (BAC), benzethonium chloride (BZT), 5-bromo-5-nitro-1,3-dioxane, dimethyldioctadecylammonium chloride, cetrimonium bromide, dioctadecyldimethylammonium bromide (DODAB); zwitterionic (amphoteric) surfactant, sultaine CHAPS (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate), cocamidopropyl hydroxysultaine, betaine, cocamidopropyl betaine, phosphatidylserine, phosphatidylethanolamine, phosphatidylcholine, sphingomyelin;Nonionic surfactants, ethoxylates, long-chain alcohols, fatty alcohols, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, oleyl alcohol, polyoxyethylene glycol alkyl ethers (Brij): CH3-(CH2)10-16-(O-C2H4)1-25-OH (octaethylene glycol monododecyl ether, pentaethylene glycol monododecyl ether), polyoxypropylene glycol alkyl ethers: CH3-(CH2)10-16-(O-C3H6)1-25-OH, glucoside alkyl ethers: CH3-(CH2)10-16-(O-glucoside)1-3-OH (decyl glucoside, lauryl glucoside, octyl glucoside), polyoxyethylene glycol octylphenol ethers: C8H17-(C6H4)-(O-C2H4)1-25-OH (Triton X-100), polyoxyethylene glycol alkylphenol ethers: C9H19-(C6H4)-(O-C2H4)1-25-OH (nonoxynol-9), glycerol alkyl esters (glyceryl laurate), polyoxyethylene glycol sorbitan alkyl esters (polysorbate), sorbitan alkyl esters (span), cocamide MEA, cocamide DEA, dodecyldimethylamine oxide (also known as lauramine oxide), copolymers of polyethylene glycol and polypropylene glycol (poloxamer), and polyethoxylated tallow amine (POEA) are included but not limited to these.;

[0073] Anionic surfactants contain anionic functional groups, such as sulfate, sulfonate, phosphate, and carboxylate, in their head groups. The main alkyl sulfates include ammonium lauryl sulfate, sodium lauryl sulfate (SDS, also called sodium dodecyl sulfate), and related alkyl ether sulfates, sodium laureth sulfate (SLES), also known as sodium lauresulfate and sodium myresulfate. Carboxylates are the most common surfactants and include alkyl carboxylates (soaps), such as sodium stearate.

[0074] Surfactants having a cationic head group include pH-dependent primary, secondary, or tertiary amines; octenidine dihydrochloride, permanently charged quaternary ammonium cations such as alkyltrimethylammonium salts; cetyltrimethylammonium bromide (CTAB) (also known as hexadecyltrimethylammonium bromide), cetyltrimethylammonium chloride (CTAC); cetylpyridinium chloride (CPC); benzalkonium chloride (BAC); benzethonium chloride (BZT); 5-bromo-5-nitro-1,3-dioxane; dimethyldioctadecylammonium chloride; cetrimonium bromide; and dioctadecyldimethylammonium bromide (DODAB).

[0075] Amphoteric surfactants have both a cationic center and an anionic center attached to the same molecule. The cationic moiety is based on a primary, secondary, or tertiary amine or a quaternary ammonium cation. The anionic moiety can be more diverse and includes, for example, sulfonates. Amphoteric surfactants typically have a phosphate anion with an amine or ammonium as found, for example, in phosphatidylserine, phosphatidylethanolamine, phosphatidylcholine, and sphingomyelin, which are phospholipids of biological origin.

[0076] Surfactants having an uncharged hydrophilic moiety, such as ethoxylates, are nonionic. Many long-chain alcohols exhibit certain surfactant properties.

[0077] The amount of surfactant in the composition can be in the range of, for example, 0 to 25 wt%, 0.5 to 20 wt%, 1 to 15 wt%, 1.5 to 10 wt%, or 2 to 5 wt%. In certain preferred embodiments, the amount is 0 to 5 wt%.

[0078] In certain embodiments, the surfactant(s) includes lauramine oxide.

[0079] In some embodiments, the cleaning composition further comprises one or more solvents. The solvent(s) can be any known solvent that is compatible with the glycolipid and / or surfactant, including water.

[0080] In one embodiment, the solvent is a glycol ether. As used herein, a glycol ether is defined by the following formula: R-(OCH2CH2) n -OR', where n = 1, 2, or 3; R = alkyl C7 or less, or phenyl or alkyl-substituted phenyl; R' = H or alkyl C7 or less, or OR' consists of a carboxylic acid ester, sulfate, phosphate, nitrate, or sulfonate.

[0081] Examples of glycol ethers include, for example, monobutyl glycol, tributyl glycol, tripropylene glycol methyl ether, ethylene glycol monomethyl ether, ethylene glycol n-butyl ether, diethylene glycol n-butyl ether, triethylene glycol n-butyl ether, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, ethylene glycol n-pentyl ether, diethylene glycol n-pentyl ether, triethylene glycol n-pentyl ether, propylene glycol n-pentyl ether, dipropylene glycol n-pentyl ether, tripropylene glycol n-pentyl ether, ethylene glycol n-hexyl ether, diethylene glycol n-hexyl ether, triethylene glycol n-hexyl ether, propylene glycol n-hexyl ether, dipropylene glycol n-hexyl ether, tripropylene glycol n-hexyl ether, ethylene glycol phenyl ether, diethylene glycol phenyl ether, triethylene glycol phenyl ether, propylene glycol phenyl ether, dipropylene glycol phenyl ether, tripropylene glycol phenyl ether, ethylene glycol benzyl ether, diethylene glycol benzyl ether, triethylene glycol benzyl ether, propylene glycol benzyl ether, dipropylene glycol benzyl ether, tripropylene glycol benzyl ether, ethylene glycol isobutyl ether, diethylene glycol isobutyl ether, triethylene glycol isobutyl ether, propylene glycol isobutyl ether, dipropylene glycol isobutyl ether, tripropylene glycol isobutyl ether, ethylene glycol isopentyl ether, diethylene glycol isopentyl ether, triethylene glycol isopentyl ether, propylene glycol isopentyl ether, dipropylene glycol isopentyl ether, tripropylene glycol isopentyl ether, ethylene glycol isohexyl ether,Diethylene glycol isohexyl ether, triethylene glycol isohexyl ether, propylene glycol isohexyl ether, dipropylene glycol isohexyl ether, tripropylene glycol isohexyl ether, ethylene glycol n-butyl methyl ether, diethylene glycol n-butyl methyl ether, triethylene glycol n-butyl methyl ether, propylene glycol n-butyl methyl ether, dipropylene glycol n-butyl methyl ether, tripropylene glycol n-butyl methyl ether, ethylene glycol n-pentyl methyl ether, diethylene glycol n-pentyl methyl ether, triethylene glycol n-pentyl methyl ether, propylene glycol n-pentyl methyl ether, dipropylene glycol n-pentyl methyl ether, tripropylene glycol n-pentyl methyl ether, ethylene glycol n-hexyl methyl ether, diethylene glycol n-hexyl methyl ether, triethylene glycol n-hexyl methyl ether, propylene glycol n-hexyl methyl ether, dipropylene glycol n-hexyl methyl ether, tripropylene glycol n-hexyl methyl ether, ethylene glycol phenyl methyl ether, diethylene glycol phenyl methyl ether, triethylene glycol phenyl methyl ether, propylene glycol phenyl methyl ether, dipropylene glycol phenyl methyl ether, tripropylene glycol phenyl methyl ether, ethylene glycol benzyl methyl ether, diethylene glycol benzyl methyl ether, triethylene glycol benzyl methyl ether, propylene glycol benzyl methyl ether, dipropylene glycol benzyl methyl ether, tripropylene glycol benzyl methyl ether, ethylene glycol isobutyl methyl ether, diethylene glycol isobutyl methyl ether, triethylene glycol isobutyl methyl ether, propylene glycol isobutyl methyl ether, dipropylene glycol isobutyl methyl etherTripropylene glycol isobutyl methyl ether, ethylene glycol isopentyl methyl ether, diethylene glycol isopentyl methyl ether, triethylene glycol isopentyl methyl ether, propylene glycol isopentyl methyl ether, dipropylene glycol isopentyl methyl ether, tripropylene glycol isopentyl methyl ether, ethylene glycol isohexyl methyl ether, diethylene glycol isohexyl methyl ether, triethylene glycol isohexyl methyl ether, propylene glycol isohexyl methyl ether, dipropylene glycol isohexyl methyl ether, tripropylene glycol isohexyl methyl ether, propylene glycol n-propyl ether, dipropylene glycol n-propyl ether, tripropylene glycol n-propyl ether, propylene glycol isopropyl ether, dipropylene glycol isopropyl ether, tripropylene glycol isopropyl ether, propylene glycol n-propyl methyl ether, dipropylene glycol n-propyl methyl ether, tripropylene glycol n-propyl methyl ether, propylene glycol isopropyl methyl ether, dipropylene glycol isopropyl methyl ether, tripropylene glycol isopropyl methyl ether, and mixtures thereof are included.

[0082] In certain embodiments, the solvent is a dibasic ester. As used herein, the term "dibasic ester" refers to a compound having the general formula R'-OOC-Y-COO-R'', where Y, R', and R'' represent any organic compound (e.g., an alkyl, aryl, or silyl group), including those having heteroatom-containing substituents. In certain embodiments, Y is a saturated or unsaturated hydrocarbon and R' and R'' are alkyl or aryl groups. Non-limiting examples of dibasic esters according to the present invention include dialkyl adipate, dialkyl succinate, dialkyl azelate, and dialykl glutarate.

[0083] In certain embodiments, the solvent is a ketone. As used herein, the term "ketone" refers to a compound having the general formula R'-CO-R'', where R' and R'' are alkyl or aryl groups, which may be the same or different from each other. Non-limiting examples of ketones according to the present invention include acetone, methyl ethyl ketone, kethyl isobutyl ketone, mesityloxide, and isophorone.

[0084] In certain embodiments, the solvent is a ketal. As used herein, the term "ketal" refers to a compound having the general formula R'2C(OR'')2, where R' and R'' are alkyl or aryl groups. Non-limiting examples of ketals according to the present invention include acetone peroxide, methyl ethyl ketone peroxide, and sorbitol ketal.

[0085] In certain embodiments, the solvent may contain one or more terpenes. As used herein, the term "terpene" refers to a class of compounds derived from isoprene having the molecular formula C5H8. The basic molecular formula of a terpene is (C5H8) n where n is the number of linked isoprene units. In some embodiments, the terpene is derived from plants such as citrus plants or pine trees. Terpenes may include, but are not limited to, DL-limonene, orange terpene, lemon terpene, grapefruit terpene, orange oil, lemon oil, other citrus terpenes, other citrus oils, geraniol, terpineol, dipentene, myrcene, linalool, cymene, terpenoid, sesquiterpene, and pinene.

[0086] The solvents of the present invention can be used individually or in blends of multiple types. In certain embodiments, the total concentration of each solvent in the cleaning composition is, for example, about 1-99 wt%, 2-95 wt%, 3-85%, 4-75 wt%, 5-65 wt%, 6-55 wt%, 7-45 wt%, 8-35 wt%, 9-25 wt%, 10-15 wt%, 1-10 wt%, 2-8 wt%, or 3-7 wt%.

[0087] In certain embodiments, the cleaning composition comprises one or more types of alkali soaps, one or more types of acids, one or more types of bleaching agents and / or one or more types of disinfectants in combination with glycolipid(s), surfactant and / or solvent. Each of these additional components can be included in the composition at a concentration of, for example, 0-99 wt%, 0.1-95 wt%, 0.5-85%, 0.75-75 wt%, 1-65 wt%, 5-55 wt%, 7-45 wt%, 8-35 wt%, 9-25 wt%, 10-15 wt%, 1-10 wt%, 2-8 wt%, or 3-7 wt%.

[0088] Exemplary alkali soaps according to the present invention include, but are not limited to, sodium hydroxide, potassium hydroxide, and fatty acid salts of sodium and / or potassium, such as potassium coconut fatty acid.

[0089] Exemplary acids according to the present invention include, but are not limited to, organic acids such as acetic acid, citric acid, lactic acid, butyric acid, sorbic acid, benzoic acid, formic acid, fumaric acid, propionic acid, ascorbic acid, glyoxylic acid, malonic acid, pyruvic acid, oxalic acid, uric acid, malic acid, tartaric acid, and / or analogs thereof; and inorganic acids such as sulfuric acid, nitric acid, phosphoric acid, hydrochloric acid, hydrofluoric acid, boric acid, and analogs thereof.

[0090] Exemplary bleaching agents according to the present invention include, but are not limited to, sodium hypochlorite, chlorine, calcium hypochlorite, and hydrogen peroxide. In certain embodiments, the bleaching agent can also function as a disinfectant or an antibacterial agent.

[0091] Exemplary disinfectants according to the present invention include, but are not limited to, thymol, citric acid, lactic acid, amine oxides (e.g., LDAO, DDA, or myristamine oxide), phenols, quaternary ammonium compounds such as benzalkonium chloride and / or substituted benzalkonium chloride, di(C6-C14)alkyl di short chain (C1-4 alkyl and / or hydroxyalkyl) quaternary ammonium salt, N-(3-chloroallyl)hexaminiium chloride, benzethonium chloride, methylbenzethonium chloride, and cetylpyridinium chloride. Other quaternary compounds include dialkyldimethylammonium chloride, alkyl dimethylbenzylammonium chloride, dialkylmethyl-enzylmmonium chloride, and mixtures thereof, as well as biguanides such as polyhexamethylene biguanide hydrochloride, p-chloro-phenyl biguanide, 4-chlorobenzhydryl biguanide, and halogenated hexidines such as, but not limited to, the group consisting of chlorhexidine (1,1'-hexamethylene-bis-5-(4-chlorophenylbiguanide) (CHG).

[0092] Other suitable additives include, for example, essential oils, plant extracts, cross-linking agents, chelating agents, fatty acids, alcohols, pH adjusters, reducing agents, syndetics, buffers, enzymes, dyes, colorants, fragrances, preservatives, emulsifiers, foaming agents, polymers, thickeners, viscosity modifiers, chelating agents (e.g., dimercaptosuccinic acid (DMSA), 2,3-dimercaptopropanesulfonic acid (DMPS), alpha-lipoic acid (ALA), thiamine tetrahydrofurfuryl disulfide (TTFD), penicillamine, ethylenediaminetetraacetic acid (EDTA), sodium acetate, sodium citrate, and citric acid), C8-C14 alcohol ester blends (e.g., EXXATE 900, 1000, 1200 from Exxon Chemical), glycols (e.g., propylene glycol, dipropylene glycol, and triproplylene glycol), acid esters (e.g., methyl oleate and methyl linoleate), diacid esters (e.g., methyl or butyl diesters of glutaric acid, adipic acid, and succinic acid), petroleum hydrocarbons, amino acids, amines (e.g., morpholine, 1,3-dimethyl-2-imidazolidinone, 1,3-propanediamine, 2-amino-1,3-propanediol, and 3-aminopropanol), alkanolamines (e.g., triethanolamine, diethanolamine, 2-aminomethylpropanol, and monoethanolamine), n-methyl-2-pyrrolidone; water softeners, sequesterants, corrosion inhibitors, antioxidants may be mentioned, and these are added in an amount effective to perform the intended function. These additives and their amounts are well within the scope of the skill in the art. Suitable water softeners include linear phosphates, styrene-maleic acid copolymers, and polyacrylates. Suitable sequesterants include 1,3-dimethyl-2-imidazolidinone; 1-phenyl-3-isooctyl-1,3-propanedione; and 2-hydroxy-5-nonylacetophenone oxime. Examples of corrosion inhibitors include 2-aminomethylpropanol, diethylethanolamine benzotraizole, and methylbenzotriazole.Antioxidants suitable for the present invention include (BHT) 2,6 - di - tert - butyl - para - cresol, (BHA) 2,6 - di - tert - butyl - para - anisole, Eastman inhibitor O A BM - oxalylbis(benzylidene hydrazide), and Eastman DTBMA 2,5 - di - tert - butylhydroquinone.

[0093] Exemplary embodiments In one exemplary embodiment, the cleaning composition comprises: I) 100 ppm to 5 wt% of one or more glycolipids; 0 to 5 wt% of a surfactant or blend of surfactants; and the balance one or more solvents. II) In one embodiment, the composition is the composition of I) wherein the glycolipid is SLP, MEL, or a mixture of glycolipids of these types. III) In one embodiment, the composition is the composition of I) or II) wherein the solvent is a glycol ether, such as monobutyl glycol, tributyl glycol, and / or tripropylene glycol methyl ether or comprises these. IV) In one embodiment, the composition is the composition of I), II) or III) wherein the solvent is a dibasic ester, such as dialkyl adipate, dialkyl succinate, and / or dialkyl azelate or comprises these. V) In one embodiment, the composition is the composition of I), II), III) or IV) wherein the solvent is a ketone solvent, such as acetone or methyl isobutyl ketone or comprises these. VI) In one embodiment, the composition is the composition of I), II), III), IV) or V) wherein the solvent is a ketal, such as acetone peroxide, methyl ethyl ketone peroxide, and / or solketal or comprises these. VII) In one embodiment, the composition is the composition of I), II), III), IV), V), or VI) wherein the solvent is a terpene, such as DL - limonene or comprises these. VIII) In one aspect, the composition is a composition of I), II), III), IV), V), VI) or VII) in which the solvent is water or contains the same. IX) In one aspect, the composition is a composition of I), II), III), IV), V), VI) or VII) in which the surfactant contains lauramine oxide. X) In one aspect, the composition is a blend of any of II) - IX). XI) In one aspect, the composition is a composition of any of I) - X) in which the composition contains an alkali soap, such as sodium hydroxide or potassium hydroxide, and a fatty acid salt of sodium and / or potassium, such as potassium coconut fatty acid. XII) In one aspect, the composition is a composition of any of I) - XI) in which the composition contains an acid, such as citric acid, oxalic acid or hydrogen peroxide. XIII) In one aspect, the composition is a composition of any of I) - XII) in which the composition contains a bleaching agent, such as sodium hypochlorite.

[0094] Method In a preferred aspect, the present invention further provides a method for cleaning a porous surface and / or improving the cleaning of a non-porous surface by applying a cleaning composition according to the present invention to the surface.

[0095] In one aspect, the surface is a porous material, where contaminants are present on the surface of the material and / or within the pores of the material. Examples of porous materials include, but are not limited to, concrete, brick, ceramic, cinder block, stone, aggregate panel, asphalt, untreated wood, sheetrock, drywall, plaster, stucco, and some plastics.

[0096] In some embodiments, the method is particularly useful for removing contaminants that are difficult to remove from porous surfaces, including, for example, scribbles, paints, permanent inks, dyes, and molds and algae. Further, the method can be used to enhance the efficiency of cleaning these and other contaminants from non-porous surfaces, including, for example, treated wood, treated stone, synthetic siding, metals, glass, and certain non-porous plastics.

[0097] In some embodiments, the present invention can be used to remove odors emitted from buildings, walkways, pools or other structures caused by the growth of algae and / or mold on the surface.

[0098] As used herein, "applying" a composition or product means causing the composition or product to affect its target or site, specifically contacting it with the target or site such that contaminants can be washed from the surface. For example, the target contaminated surface may be immersed, submerged, soaked, and / or dipped in the cleaning composition. The composition may also be injected, dispersed, distributed, poured, spread, sprayed, rubbed, wiped, painted, or applied to the surface by any other means contemplated by one of ordinary skill in the art.

[0099] In one embodiment, the cleaning composition is applied to the surface by spraying, using, for example, a spray bottle or a pressurized spraying device.

[0100] In a preferred embodiment, the composition is sprayed onto the surface at high pressure. In a preferred embodiment, the high pressure is defined as 1,000 psi to 10,000 psi. The exact pressure can vary depending on the type of contaminant and the type of surface being cleaned. In one embodiment, the pressure can range from about 1,000 to about 2,000 psi for smaller household-type cleaning, about 2,000 to about 3,000 psi for medium-scale operations, or 3,000 to about 7,000 or 8,000 psi for large-scale industrial cleaning operations.

[0101] Electric washing machines or high-pressure washers are often used, for example, to clean the sides of buildings and other structures, screens, sidewalks and patios, automobiles, boats, airplanes, lawn equipment, iron grilles, fences, walls, floors, grills, and heavy machinery. Advantageously, when used as part of a solution for an electric washing machine, the present cleaning composition can improve the removal of contaminants compared to using, for example, water or other cleaning chemicals alone.

[0102] In certain embodiments, the spraying of the composition can be carried out at elevated temperatures to further enhance the efficiency of cleaning, whether under high pressure or standard pressure. For example, in some embodiments, the spraying is carried out at a temperature of about 25°C to 300°C, 35°C to 250°C, 45°C to 200°C, or 55°C to 150°C.

[0103] In one embodiment, the surface is allowed to soak with the cleaning composition thereon for a time sufficient to promote the removal of contaminants. For example, the soaking can be carried out for up to 5 minutes to 72 hours, 10 minutes to 56 hours, 15 minutes to 48 hours, 20 minutes to 36 hours, 25 minutes to 24 hours, or as long as necessary.

[0104] In one embodiment, the method further includes the step of removing the cleaning composition and contaminants from the surface. This can be achieved, for example, by rinsing the surface with water or spraying water on the surface, and / or by rubbing or wiping the surface with a cloth until the cleaning composition and contaminants are removed from the surface. Rinsing or spraying with water can be carried out before and / or after rubbing or wiping the surface with a cloth. In some embodiments, the spraying is carried out under high pressure and / or elevated temperature, for example, at the pressures and / or temperatures outlined above for the application of the cleaning composition. In certain embodiments, an abrasive material is applied simultaneously with the pressurized spray (e.g., sandblasting).

[0105] In another aspect, mechanical methods can be used to remove contaminants and / or the cleaning composition from the surface after application of the cleaning composition. For example, agitators, drills, hammers, sandpaper, or scrapers can be used to remove contaminants from the surface that are particularly difficult to remove due to the amount or type of contaminant.

[0106] In one aspect, the present invention provides a method for cleaning scribbles, a method for cleaning mold and algae, a method for cleaning permanent ink and dyes, and a method for cleaning food particles and / or pathogens from a porous surface.

[0107] Advantageously, the present compositions and methods improve the safety and environmental impact of cleaning contaminants that are difficult to remove, for example, in public, household, commercial, medical and industrial settings, and in the presence of humans, plants and animals. Further, the compositions and methods utilize biodegradable and toxicologically safe components, thereby reducing the amount of harsh cleaning chemicals required to achieve the desired level of cleaning.

Claims

1. A cleaning composition comprising one or more glycolipids, one or more surfactants, and one or more solvents.

2. The cleaning composition according to claim 1, wherein the glycolipid is sophorolipid, mannosylerythritol lipid, or a mixture thereof.

3. The cleaning composition according to claim 1, comprising 100 ppm to 5 wt% of the one or more glycolipids.

4. The cleaning composition according to claim 1, comprising up to 5 wt% of the one or more surfactants.

5. The cleaning composition according to claim 1, wherein the one or more surfactants include lauramine oxide.

6. The cleaning composition according to claim 1, wherein the one or more solvents are selected from glycol ethers, dibasic esters, ketone solvents, ketal solvents, terpenes, and water.

7. The cleaning composition according to claim 6, wherein the glycol ether is selected from monobutyl glycol, tributyl glycol, and tripropylene glycol methyl ether.

8. The cleaning composition according to claim 6, wherein the dibasic ester is selected from dialkyl adipate, dialkyl succinate, and dialkyl azelate.

9. The cleaning composition according to claim 6, wherein the ketone solvent is selected from acetone and methyl isobutyl ketone.

10. The cleaning composition according to claim 6, wherein the terpene is DL-limonene.

11. The cleaning composition according to claim 1, further comprising one or more of an alkali soap, an acid, and a bleaching agent.

12. A method for cleaning contaminants from a surface, comprising: applying to the surface a cleaning composition comprising one or more glycolipids, one or more surfactants, and one or more solvents; and removing the cleaning composition and the contaminants from the surface, wherein the contaminants are paint, ink, dye, mold, algae, food particles, or microorganisms. The method.

13. The method according to claim 12, wherein the cleaning composition is applied to the surface by spraying.

14. The method according to claim 13, wherein the spraying is achieved using a spray bottle.

15. The method according to claim 13, wherein the spraying is achieved using a pressurized spraying device, and the composition is sprayed at a pressure of 1,000 psi to 7,000 psi.

16. The method according to claim 15, wherein the pressurized spraying device is an electric washing machine or a high-pressure washing machine.

17. The method according to claim 12, wherein the cleaning composition is applied to the surface at a temperature of 25°C to 300°C.

18. The method according to claim 12, wherein the cleaning composition is rubbed, spread, or applied to the surface using a cloth or a brush.

19. The method according to claim 12, wherein the step of applying the cleaning composition includes dipping, soaking, or immersing the surface in a container containing the cleaning composition therein.

20. The method according to claim 12, wherein the cleaning composition is allowed to penetrate the surface for 5 minutes to 72 hours before the step of removing the cleaning composition and the contaminants from the surface.

21. The method according to claim 12, wherein the step of removing the cleaning composition and the contaminants includes rinsing the surface with water or spraying water onto the surface.

22. The method according to claim 21, wherein the spraying is achieved using a pressurized spraying device, and the water is sprayed at a pressure of 1,000 psi to 7,000 psi.

23. The method according to claim 21, wherein the water is applied to the surface at a temperature of 25°C to 300°C.

24. The method according to claim 12, wherein the step of removing the cleaning composition and the contaminants includes rubbing or wiping the surface with a cloth until the cleaning composition and the contaminants are removed from the surface.

25. The method according to claim 12, wherein the step of removing the cleaning composition and the contaminants includes sandblasting the surface.

26. The method according to claim 12, wherein the porous surface is brick, ceramic, cinder block, stone, aggregate panel, asphalt, untreated wood, sheetrock, drywall, gypsum, stucco, or porous plastic.

27. The method according to claim 12, wherein the glycolipid is sophorolipid, mannosylerythritol lipid, or a mixture thereof.

28. The method according to claim 12, wherein the cleaning composition contains 100 ppm to 5 wt% of the one or more glycolipids.

29. The method according to claim 12, wherein the cleaning composition contains up to 5 wt% of the one or more surfactants.

30. The method according to claim 12, wherein the one or more surfactants include lauramine oxide.

31. The method according to claim 12, wherein the one or more solvents are selected from glycol ethers, dibasic esters, ketone solvents, terpenes, and water.

32. The method according to claim 12, wherein the glycol ether is selected from monobutyl glycol, tributyl glycol, and tripropylene glycol methyl ether.

33. The method according to claim 12, wherein the dibasic ester is selected from dialkyl adipate, dialkyl succinate, and dialkyl azelate.

34. The method according to claim 12, wherein the ketone solvent is selected from acetone and methyl isobutyl ketone.

35. The method according to claim 12, wherein the terpene is DL-limonene.

36. The method according to claim 12, wherein the cleaning composition further comprises one or more of an alkali soap, an acid, and a bleaching agent.

Images