DE102020124843A1 - Multi-component composition for surface treatment - Google Patents

Abstract

The present invention relates to a multi-component composition for surface treatment, in particular for the treatment of natural and artificially produced organic surfaces and glass surfaces, which comprises a cleaning solution and a coating solution which are separate from one another, the cleaning solution comprising at least one inorganic peroxide compound and at least one organic acid and wherein the coating solution comprises at least one photoactive substance, at least one magnetotactic microorganism, at least one phototrophic microorganism, at least one antifungal microorganism and at least one optical brightener; a surface treatment kit; a method for treating surfaces using the multi-component composition or the kit, and the use of the multi-component composition and the kit.

Description

field of invention

The present invention relates to a multi-component surface treatment composition comprising a cleaning solution and a coating solution which are separate from each other, and a surface treatment kit. In addition, the present invention relates to a method for treating surfaces using the multi-component composition or the kit and the use of the multi-component composition and the kit.

Background of the Invention

Black mushrooms are found all over the world, including the North and South Poles, the peaks of K2 and hot desert regions, as they are highly resistant to heat, dehydration, cold and UV radiation. It has long been known that black fungi, together with cyanobacteria - as dark colonies the size of a pinhead - settle after just a few years on solid, natural and artificially produced organic surfaces or on glass surfaces and form so-called biofilms on them, possibly together with green algae. This is not just an aesthetic issue. Scientists from the Federal Institute for Materials Research and Testing (BAM) have found out that the biofilm that forms on the surfaces of solar modules or photovoltaic (PV) modules in particular impairs the efficiency of the PV system, because the organisms absorb light, especially in that used to generate electricity wavelength range from 300 nm to 1000 nm useful for PV systems (Noack-Schönmann S., Spagin O., Gründer KP, Breithaupt M., Günter A., Muschik B., Gorbushina AA "Sub-aerial biofilms as blockers of solar radiation : spectral properties as tools to characterize material-relevant microbial growth”, International Biodeterioration & Biodegradation (2014), 86, 286-293). But not only is the performance of the systems affected, the organisms can also pull minerals out of the glass, causing damage to the glass surface. Filamentous cells of the fungi, so-called fungal hyphae, invade the glass surface, causing physical and chemical destruction over time. Even after removing the biofilm, the glass surface is no longer smooth, but fine indentations or "cracks" remain (Drewello R., Weissmann R. "Microbially influenced corrosion of glass", Applied Microbiology and Biotechnology (1997), 47, 337- 346). In the case of the glass surfaces of PV modules in particular, the incident light is scattered as a result, which is why the output of the PV system continues to decrease.

Ordinary surfactant-based cleaning agents are only insufficiently able to remove such organic contaminants on natural and man-made organic surfaces or on glass surfaces. An additional mechanical "rough cleaning" is often required, which is a major problem, especially with solar modules or photovoltaic modules, since even low pressure loads on the modules can cause microscopic cracks and damage to the surface. Frequently, only superficial cleaning takes place here, with the cracks that have already formed in the surface after removal of the biofilm not being cleaned sufficiently, which accelerates recontamination of the surface or new infestation with organisms.

In addition, it would be desirable if the cleaned surface were given a protective layer that is gentle on the material and at the same time ensures a lasting cleaning and protective effect for the surface. In the case of solar or PV modules in particular, this could increase the service life and performance of the modules.

object of the invention

One object of the present invention is therefore to provide an agent that makes it possible to clean natural and artificially produced organic surfaces and glass surfaces gently and without exerting pressure and to remove inorganic and organic contaminants equally efficiently.

A further object of the present invention is to provide an agent with a deep-cleaning effect, which also efficiently and thoroughly cleans damage already present on the surface, such as cracks, etc.

Another object of the present invention is to provide an agent which acts as a surface disinfectant and renders organisms such as black fungus, algae, moss, cyanobacteria, etc. harmless.

Another object of the present invention is to provide an agent that is gentle on the material and at the same time develops a lasting and preventive protective and cleaning effect on the surface.

A further object of the present invention is to provide a means that increases the service life and the output of solar or PV modules and thus increases the efficiency and profitability of PV systems, including those that already exist.

A further object of the present invention is to provide such an agent which is safe for humans, animals and plants.

A further object of the present invention is to provide a method and/or a kit which achieves one or more of the objects mentioned above.

Solution according to the invention

One or more of the above objects are achieved by a multi-component composition for surface treatment, in particular for the treatment of natural and artificially produced organic surfaces and glass surfaces, which comprises a cleaning solution and a coating solution that are separate from one another, the cleaning solution comprising at least one inorganic peroxide compound and at least one organic acid and wherein the coating solution comprises at least one photoactive substance, at least one magnetotactic microorganism, at least one phototrophic microorganism, at least one antifungal microorganism and at least one optical brightener.

As was surprisingly found, the multi-component composition according to the invention advantageously enables an efficient, lasting and preventive cleaning effect against inorganic and organic contamination on natural and artificially produced organic surfaces and on glass surfaces, which is supported by bioactive microorganisms in a natural and environmentally friendly manner. In addition, it was surprisingly found that the multi-component composition advantageously increases the service life and output of the modules when treating surfaces of solar or PV modules.

The cleaning solution according to the invention acts as an oxidative cleaning agent that removes hardening and dirt, in particular organic dirt, on the surface to be treated and also penetrates cracks or other damage. After its application to the surface to be treated, the coating solution according to the invention causes the formation of a microbiological coating on the surface, which is gentle on the material and at the same time develops a sustainable and continuous self-cleaning and protective effect by an interaction of catalytic photoreaction (photocatalysis) and biocatalytic Processes that reduce the formation and hardening of organic as well as inorganic contaminants.

Especially when cleaning and coating the surfaces of solar or PV modules, the performance of the modules can be increased and efficiency losses avoided in the long term.

The present invention also relates to a kit for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces, the kit comprising: a cleaning solution which comprises at least one inorganic peroxide compound and at least one organic acid, and a coating solution which comprises at least one photoactive Substance comprises at least one magnetotactic microorganism, at least one phototrophic microorganism, at least one microorganism with antifungal activity and at least one optical brightener.

• - Bereitstellen einer Reinigungslösung;
• - Bereitstellen einer Beschichtungslösung;
• - Auftragen der Reinigungslösung auf die zu behandelnde Oberfläche; und
• - Auftragen der Beschichtungslösung auf die zu behandelnde Oberfläche.

The present invention is also a method for treating surfaces, in particular for treating natural and artificially produced organic surfaces and Glass surfaces, using the multi-component composition according to the invention or the kit according to the invention, comprising the steps:

• - providing a cleaning solution;
• - providing a coating solution;
• - Applying the cleaning solution to the surface to be treated; and
• - Applying the coating solution to the surface to be treated.

The subject of the present invention is also the use of the multi-component composition according to the invention or the kit according to the invention for the treatment of natural and artificially produced organic surfaces and glass surfaces, in particular for the treatment of the surface of solar or photovoltaic modules, and the use of the cleaning solution for the production of a kit.

The cleaning solution according to the invention and the coating solution according to the invention are of a liquid nature and are present in particular as homogeneous solutions. In a preferred embodiment, the cleaning solution according to the invention and the coating solution according to the invention are liquid and contain water, preferably softened water, as the main solvent, ie they are aqueous solutions in each case. In the context of the present invention, the term “softened water” should be understood to mean both deionized water, demineralized water and distilled water.

According to the invention, the coating solution contains at least one photoactive substance. In the context of the present invention, a photoactive substance is understood to mean a substance which forms radicals, in particular hydroxyl radicals, by absorbing UV light in particular, and can therefore act as a catalyst in a photocatalytic reaction (photocatalysis). The phenomenon of photocatalysis is well known to those skilled in the art, for example from V. Parmon, et al.: IUPAC Glossary of Terms in Photocatalysis and Radiocatalysis, International Journal of Photoenerg, Vol. 4, 2002, 91-131.

The photoactive substance is preferably selected from metal oxide and semimetal oxide particles, with particles of titanium dioxide, silicon dioxide, iron (II,III) oxide ("magnetite"), manganese oxide, nickel oxide, cobalt oxide, molybdenum oxide and selenium oxide, and mixtures thereof, especially are preferred. Titanium dioxide particles and silicon dioxide particles, as well as a mixture thereof, are very particularly preferred according to the invention, since these have a high photocatalytic activity per unit weight or volume and are therefore the most efficient in terms of photocatalysis. Most preferred in this regard are titanium dioxide particles, especially in the anatase modification.

The metal oxide and semimetal oxide particles preferably have an average particle size (D50) of 0.5 to 2 microns, more preferably about 1.0 microns, measured by a common method in which a measuring instrument HELOS Sympatec GmbH according to the manufacturer's information was used.

Due to the photoactive substance, the coating solution or, after application of the coating solution to the surface to be treated, the coating formed has a photocatalytic activity. This means that the radicals formed during the photocatalysis by absorption in particular of UV light, in particular hydroxyl radicals, chemically attack organic impurities on the surface and in their depressions and at least partially decompose them. The organic contaminants activated in this way can then easily be biodegraded by the microorganisms contained in the coating solution or coating and ultimately metabolized into carbon dioxide and water.

The amount of the at least one photoactive substance in the coating solution is preferably in a range from 0.001 to 0.3% by weight, more preferably from 0.01 to 0.1% by weight, particularly preferably from 0.02 to 0. 08% by weight, and most preferably from 0.04 to 0.06% by weight based on the total weight of the coating solution. A lower concentration of photoactive substance in the coating solution than 0.001% by weight leads to insufficient photocatalytic activity of the coating solution or the coating. If the concentration of photoactive substance in the coating solution is higher than 0.3% by weight, undesired streaking can occur on the coated surface.

An essential feature of the present invention is that the coating solution contains at least one microorganism from the group of magnetotactic microorganisms, at least one microorganism from the group of phototrophic microorganisms and at least one microorganism with an antimycotic effect.

The magnetotactic microorganisms used according to the invention are preferably magnetotactic bacteria, i.e. mobile, anaerobic or microaerophilic bacteria that contain ferromagnetic iron oxide (magnetite) or iron sulfide (greigite) in crystalline form as particles, so-called magnetosomes, the diameter of which is about 40 to is 90nm. These particles give the bacteria the ability to orient themselves according to the earth's magnetic field and, together with the photoactive substance contained in the coating solution, can have a photocatalytic effect, i.e. form hydroxyl radicals that react with impurities and activate them for microbial degradation. Preferred representatives of the magnetotactic bacteria used according to the invention are bacteria of the genera such as, for example, Aquaspirillum or Magnetospirillum, including, for example, the species Magnetospirillum magnetotacticum and, preferably, Magnetospirillum gryphiswaldense, without being limited thereto.

The phototrophic microorganisms used according to the invention include both obligatory and facultative phototrophic microorganisms. Preference is given to using optionally phototrophic microorganisms, i.e. microorganisms which can grow both under anaerobic conditions in the light and under aerobic conditions in the dark. The microorganisms according to the invention can be both photolithotrophic and photoorganotrophic.

The phototrophic bacteria which can be used in the present invention include gram-negative aerobic, rod-shaped and circular bacteria, and gram-positive circular bacteria. These can have endospores or be present without spores. Phototrophic bacteria suitable according to the invention are, for example, but not limited to, purple bacteria, green sulfur bacteria, green non-sulfur bacteria, beneficial or harmless cyanobacteria, prochlorophytes and bacteria of the Heliobacteriaceae family. Purple bacteria that can be used according to the invention are both purple sulfur bacteria, for example bacteria of the genera Allochromatium, Amoebobacter, Chromatium, Ectothiorhodospira, Halochromatium, Halorhodospira, Isochromatium, Lamprobacter, Lamprocystis, Marichromatium, Rhabdochromatium, Thermochromatium, Thiocapsa, Thiococcus, Thiscystis, Thiodictyon, Thiohalocapsa, Thiolamprovum, Thiodocpedia , Thiorhodovibrio and Thiospirillum, as well as non-sulphur purple bacteria, for example bacteria of the genera Rhodobacter, Rhodocyclus, Rhodoferax, Rhodomicrobium, Rhodopila, Rhodopseudomonas, Rhodoplanes, Rhodobium, Rhodospirillum, Rhodovibrio, Roseospira, Rhodospira Rhodovulum and Rubrivivax. Examples of green sulfur bacteria which can be used in the present invention are bacteria belonging to the genera Chlorobium, Prosthecochloris and Chlorobaculum. Examples of green non-sulfur bacteria which can be used in the present invention are bacteria belonging to the genera Chloroflexus, Oscillochloris and Heliothrix. Examples of cyanobacteria that can be used in the present invention are bacteria of the genus Anabaena, Spirulina and Arthrospira. Examples of prochlorophytes that can be used according to the invention are bacteria of the genera Prochloron, Prochlorothrix, Prochlorococcus. Suitable members of the Heliobacteriaceae family are, for example, bacteria of the genera Heliobacterium, Heliophilum and Heliobacillus.

The multi-component composition according to the invention preferably contains in the coating solution a mixture of optionally phototrophic microorganisms comprising cyanobacteria, green sulfur bacteria, purple bacteria, green non-sulfur bacteria such as Chloroflexus and Heliobacteriaceae such as Heliobacillus. According to a further preferred embodiment of the invention, three, four, five or six of the bacterial forms mentioned are present in the mixture.

As already explained above, the at least one photoactive substance contained acts as an activator in that the radicals generated during the photocatalysis chemically attack organic impurities on the surface to be treated. The activated organic contaminants can then be broken down biologically by the metabolism of the microorganisms contained into harmless compounds such as carbon dioxide and water, whereby the microbiological coating formed develops a sustainable, continuous and environmentally friendly self-cleaning and protective effect at the same time.

Furthermore, the coating solution can also contain other microorganisms which have a positive effect on the multicomponent composition according to the invention. These include microorganisms with specific and non-specific antifungal effects. Lactic acid bacteria, sulfate-reducing bacteria, archaea, fungi such as mold and yeast fungi, and algae are preferably used. Examples of lactic acid bacteria suitable according to the invention are those of the genus Lactobacillus, preferably of the species Lactobacillus casei, Lactobacillus plantarum, Lactobacillus delbrückii, such as Lactobacillus delbrückii subsp. lactis and bulgaricus, Lactobacillus fructosum, and Lactobacillus sakei. Examples of sulphate-reducing bacteria suitable according to the invention are those of the genera Desulfobacter and Thermodesulfobacterium. Examples of archaea suitable according to the invention are methanogenic archaea such as those of the genus Methanospirillum, for example Methanospirillum hungatei. Examples of fungi suitable according to the invention are those of the genera Kluyveromyces and Penicillium, such as Kluyveromyces marxianus and Penicillium roqueforti. Examples of algae suitable according to the invention are, for example, freshwater algae such as those of the genus Chlorella. Microorganisms of the genera Photobacterium, Allivibrio, Photohabdus, Pseudomonas or Beneckea may also be present to fix nitrogen as well as phosphate and to break down organic matter. Among the microorganisms mentioned, representatives of the lactic acid bacteria, the genus Pseudomonas and Penicilium have an antifungal effect. The microbial antifungal effect is caused both by competition for food and the formation of various biogenic organic compounds that restrict the growth of black fungi.

The microorganisms mentioned above are present in the coating solution mainly as living microorganisms, usually in an amount of about 1×10 ² to 1×10 ¹⁰ CFU/l. All microorganisms used in the coating solution are assigned to the lowest safety category 1 according to TRBA (Technical Rules for Biological Agents) 460 and 466.

Before they are added to the coating solution, the microorganisms are usually present in a nutrient medium which primarily contains vital nutrients and trace elements and which is added to the coating solution together with the microorganisms. Together, the culture medium and microorganisms form a mass of microorganisms.

In the context of the present invention, the term “mass of microorganisms” is therefore understood to mean the total amount of different microorganisms mentioned above, including the nutrient medium.

The total mass of microorganisms in the coating solution is preferably in a range from 1 to 30% by weight, preferably from 5 to 25% by weight, particularly preferably from 10 to 25% by weight, based on the total weight of the coating solution. With a lower amount of microorganisms, the initial concentration of the microorganisms in the coating may be too low to allow rapid growth of growth on the surface to be treated. If the amount of microorganisms is above this range, the storage stability of the coating solution may be reduced.

Furthermore, the coating solution according to the invention contains at least one optical brightener. For the purposes of the present invention, an optical brightener is a substance that absorbs energy from the electromagnetic spectrum of (sun) light in the non-visible UV range, usually below a wavelength of 400 nm, and this usually in a wider wavelength range re-emits between about 400 to about 480 nm.

The optical brightener also causes the coating solution or, after the coating solution has been applied to the surface to be treated, the coating formed, to reduce the total reflection of the (sun) light on the surface to be treated, so that the incident radiation is directed onto the surface and not reflected in the reflection angle. In particular when applied to the surfaces of solar cells or photovoltaic modules, i.e. when using the multi-component composition according to the invention for the surface treatment of solar cells or photovoltaic modules, this effect leads to an improvement in the energy conversion efficiency, especially in diffuse light and at sunrise and sunset, whereby the The efficiency and profitability of a PV system, including that of existing systems, is increased.

According to the invention, the amount of at least one optical brightener in the coating solution is preferably in a range from 0.0001 to 0.01% by weight, preferably from 0.0003 to 0.001% by weight, based on the total weight of the coating solution. A lower optical brightener concentration results in reduced optical brightener efficiency in the coating solution or the coating. A concentration above this range can lead to an undesirable interaction with the microorganisms contained.

The optical brightener is not further restricted. All chromophores that emit short-wave light as longer-wave light are suitable. An example of an optical brightener suitable according to the invention is 2,2-(1,2-ethenediyldi-4,1-phenylene)bisbenzoazole (WTH® brightener OB-1), without being limited thereto.

• - mindestens einen magnetotaktischen Mikroorganismus, mindestens einen Mikroorganismus mit antimykotischer Wirkung und mindestens einen phototrophen Mikroorganismus,
• - mindestens eine photoaktive Substanz, und
• - mindestens einen optischen Aufheller,

wobei die Masse an Mikroorganismen 1 bis 30 Gew.-% beträgt, die mindestens eine photoaktive Substanz in einer Menge von 0,001 bis 0,3 Gew.-% enthalten ist und der mindestens eine optische Aufheller in einer Menge von 0,0001 bis 0,01 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Beschichtungslösung, und der Rest ist Wasser.According to the invention, preference is therefore given to a coating solution which comprises:

• - at least one magnetotactic microorganism, at least one microorganism with antifungal activity and at least one phototrophic microorganism,
• - at least one photoactive substance, and
• - at least one optical brightener,

wherein the mass of microorganisms is 1 to 30% by weight, the at least one photoactive substance is contained in an amount of 0.001 to 0.3% by weight and the at least one optical brightener in an amount of 0.0001 to 0, 01% by weight is contained, in each case based on the total weight of the coating solution, and the remainder is water.

In a preferred embodiment, the coating solution of the multi-component composition according to the invention additionally contains at least one biopolymer, in particular at least one polysaccharide. The polysaccharide is preferably an aminopolysaccharide, preferably a chitin-based aminopolysaccharide, for example chitosan, which can be obtained by the action of alkalis on chitin, or a chitosan derivative such as chitosan lactate. The amount of polysaccharide in the coating solution is preferably in a range from 0.01 to 1.0% by weight, more preferably from 0.03 to 1.0% by weight, particularly preferably from 0.05 to 0.8% % by weight, and most preferably from 0.1 to 0.5% by weight, based on the total weight of the coating solution. If the proportion of polysaccharide in the coating solution is below this range, adhesion of the coating to the surface to be treated may be reduced. If the proportion of polysaccharide is above this range, the surface to be treated may become undesirably sticky.

In another preferred embodiment, the coating solution also contains at least one additive, preferably at least two additives, selected from surfactants, softeners, evaporation agents, additives to improve the flow and drying behavior, to adjust the viscosity and/or for stabilization, UV stabilizers, Pearlescent agents, corrosion inhibitors, preservatives, bitter substances, organic salts, (structuring) polymers, defoamers, pH adjusters, additives that improve or care for the skin and nutrient solutions for microorganisms, in particular for faster growth of microorganisms on the surface, preferably selected from surfactants, softening agents , evaporants, defoamers and nutrient solutions for microorganisms, and preferably in an amount totaling from 0.001 to 2.0% by weight, based on the total weight of the coating solution. The additives can further improve the performance properties of the coating solution or, after application to the surface to be treated, of the coating.

• - mindestens einen magnetotaktischen Mikroorganismus, mindestens einen Mikroorganismus mit antimykotischer Wirkung und mindestens einen phototrophen Mikroorganismus,
• - mindestens eine photoaktive Substanz,
• - mindestens einen optischen Aufheller,
• - mindestens ein Polysaccharid, und
• - mindestens ein Additiv ausgewählt aus Tensiden, Enthärtungsmitteln, Verdunstungsmitteln, Additiven zur Verbesserung des Ablauf- und Trocknungsverhaltens, zur Einstellung der Viskosität und/oder zur Stabilisierung, UV-Stabilisatoren, Perlglanzmitteln, Korrosionsinhibitoren, Konservierungsmitteln, Bitterstoffen, organischen Salzen, (strukturgebenden) Polymeren, Entschäumern, pH-Stellmittel, Hautgefühl-verbessernden oder pflegenden Additiven und Nährlösungen für Mikroorganismen,

wobei die Masse an Mikroorganismen 1 bis 30 Gew.-% beträgt, die mindestens eine photoaktive Substanz in einer Menge von 0,001 bis 0,3 Gew.-% enthalten ist, der mindestens eine optische Aufheller in einer Menge von 0,0001 bis 0,01 Gew.-% enthalten ist, das mindestens eine Polysaccharid in einer Menge von 0,01 bis 1 Gew.-% enthalten ist und das mindestens eine Additive in einer Menge von 0,001 bis 2,0 Gew.-%, enthalten ist, jeweils bezogen auf das Gesamtgewicht der Beschichtungslösung, und der Rest ist Wasser.According to the invention, particular preference is therefore given to a coating solution which comprises:

• - at least one magnetotactic microorganism, at least one microorganism with antifungal activity and at least one phototrophic microorganism,
• - at least one photoactive substance,
• - at least one optical brightener,
• - at least one polysaccharide, and
• - at least one additive selected from surfactants, softening agents, evaporation agents, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, pearlescent agents, corrosion inhibitors, preservatives, bitter substances, organic salts, (structuring) polymers , defoamers, pH adjusters, additives that improve or care for the skin and nutrient solutions for microorganisms,

wherein the mass of microorganisms is 1 to 30% by weight, the at least one photoactive substance is contained in an amount of 0.001 to 0.3% by weight, the at least one optical brightener in an amount of 0.0001 to 0, 01% by weight, containing at least one polysaccharide in an amount of 0.01 to 1% by weight and containing at least one additive in an amount of 0.001 to 2.0% by weight, respectively based on the total weight of the coating solution and the balance is water.

The water content of the coating solution is usually at least 70% by weight, preferably 70 to 99% by weight, particularly preferably 75 to 90% by weight, based on the total weight of the coating solution.

In preferred embodiments, the pH of the coating solution is in a range from 3 to 5, preferably from 3 to 4, and particularly preferably from 3.3 to 3.7.

In addition to the coating solution, the multi-component composition according to the invention also comprises a cleaning solution which is separate from the coating solution and contains at least one inorganic peroxide compound and at least one organic acid.

The at least one inorganic peroxide compound is preferably selected from hydrogen peroxide and peroxides from the group of peroxosulfates (persulfates), such as potassium peroxodisulfate (K ₂ S ₂ O ₈ ) or ammonium peroxodisulfate ((NH ₄ ) ₂ S ₂ O ₈ ), peroxocarbonates (percarbonates) , such as sodium percarbonate, and peroxoborates (perborates), such as sodium perborate, and mixtures thereof, with hydrogen peroxide being particularly preferred.

The preferred amount of the at least one inorganic peroxide compound in the cleaning solution according to the invention is in a range from 0.03 to 5% by weight, more preferably from 0.5 to 3% by weight, particularly preferably from 1 to 2% by weight on the total weight of the cleaning solution. The inorganic peroxide compound gives the cleaning solution an oxidative cleaning effect, in particular against organic impurities, and a disinfecting effect against germs, bacteria, fungi, spores, etc., with an optimal cleaning and disinfecting effect when applied to the surface to be treated in the claimed concentration range is achieved.

The at least one organic acid is preferably selected from aliphatic and aromatic, monobasic and polybasic carboxylic acids and carboxylic acid derivatives and mixtures thereof. Mentioned as non-limiting examples are in particular dipicolinic acid, pyridine-2,6-dicarboxylic acid and citric acid.

The amount of the at least one organic acid in the cleaning solution is preferably in a range from 0.01 to 5% by weight, more preferably from 0.01 to 4% by weight, particularly preferably from 0.02 to 3% by weight. based on the total weight of the cleaning solution. The presence of the organic acid improves the cleaning effect of the cleaning solution. If smaller amounts of organic acid are used, the cleaning effect of the cleaning solution is impaired. Using higher amounts of organic acid can lead to increased corrosion.

• - mindestens eine anorganische Peroxidverbindung und
• - mindestens eine organische Säure,

wobei die mindestens eine anorganische Peroxidverbindung in einer Menge von 0,03 bis 5 Gew.-% enthalten ist und die mindestens eine organische Säure in einer Menge von 0,01 bis 5 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Reinigungslösung, und der Rest ist Wasser.According to the invention, preference is therefore given to a cleaning solution which contains:

• - at least one inorganic peroxide compound and
• - at least one organic acid,

wherein the at least one inorganic peroxide compound is contained in an amount of 0.03 to 5% by weight and the at least one organic acid is contained in an amount of 0.01 to 5% by weight, based in each case on the total weight of the cleaning solution , and the rest is water.

In a preferred embodiment, the cleaning solution according to the present invention contains water as the main solvent.

In a further preferred embodiment, at least one alcohol compound can be added to the cleaning solution as a non-aqueous solvent. Suitable alcohol compounds include monohydric or polyhydric alcohols, alkanolamines, glycols and glycol ethers, provided they are miscible with water in the specified concentration range. The at least one alcohol compound is preferably selected from ethanol, n-propanol, i-propanol, n-butanol, i-butanol, t-butanol, glycol, propanediol, butanediol and methyl propanediol, glycerin, diglycol, propyl diglycol, butyl diglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, methoxytriglycol, ethoxytriglycol, butoxytriglycol, 1-butoxyethoxy-2- propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, di-n-octyl ether, as well as polyglycols and polyalkylene glycols, and mixtures thereof.

The at least one alcohol compound is preferably contained in an amount of 0.1 to 60% by weight, more preferably 5 to 30% by weight, still more preferably 10 to 20% by weight, based on the total weight of the cleaning solution.

In addition or as an alternative to the at least one alcohol compound, the cleaning solution preferably contains at least one surface-active compound selected from ionic surfactants, ie anionic and cationic surfactants, nonionic surfactants, amphoteric surfactants, and mixtures thereof, with anionic surfactants and nonionic surfactants being preferred. The amount of surface-active compound in the cleaning solution is preferably from 0.01 to 10% by weight, more preferably 0.1 to 5% by weight, based on the total weight of the cleaning solution. Both the at least one alcohol compound and the at least one surface-active compound can contribute to removing contaminants from the surface to be treated.

Suitable compounds from the class of anionic surfactants which can be included in the cleaning solution in accordance with the present invention include, but are not limited to, fatty alcohol ether sulfates, fatty alcohol sulfates, secondary alkane sulfonates, linear alkyl benzene sulfonates and alkyl sulfates. Such anionic surfactants are known in the prior art.

Suitable cationic surfactants are, without being limited thereto, quaternary ammonium compounds of the formula (R ¹ )(R ² )(R ³ )(R ⁴ )N ⁺ X ^- , in which R ¹ to R ⁴ represent four identical or different types, in particular two long and two short chain alkyl radicals, typically stearyl, palmityl, methyl, benzyl or butyl radicals, and X ^- represents an anion, especially a halide ion, for example didecyldimethylammonium chloride, alkylbenzyldidecylammonium chloride and mixtures thereof. Such cationic surfactants are known in the art.

Nonionic surfactants which may be included in the cleaning solution for the purposes of the present invention include, but are not limited to, alkyl glycosides, fatty alcohol alkoxylates, alkoxylated fatty acid alkyl esters, fatty acid alkanolamides, hydroxy mixed ethers, sorbitan fatty acid esters, polyhydroxy fatty acid amides, amine oxides and alkoxylated alcohols. Suitable alkyl glycosides are, for example, those of the formula R ⁵ O-[G] _p in which R ⁵ is linear or branched alkyl having 10 to 16 carbon atoms, G is a sugar radical having 5 or 6 carbon atoms, in particular glucose, to which an alcohol radical or phenol radical is attached a glycosidic bond may be attached and the index p is 1-10. Such nonionic surfactants are known in the prior art.

Suitable amphoteric surfactants are preferably selected from the group of betaines, in particular of the formula (R ⁶ )(R ⁷ )(RS ) ^{N +} CH ₂ COO ^- , in which R ⁶ is an alkyl radical with 8 to 25 carbon atoms which is optionally interrupted by heteroatoms or heteroatom groups and R ⁷ and R ⁸ are the same or different alkyl radicals having 1 to 3 carbon atoms, such as, but not limited to, C10-C18 alkyl dimethylcarboxymethyl betaine and C11-C17 alkylamidopropyl dimethylcarboxymethyl betaine. Such amphoteric surfactants are known in the prior art.

According to a further embodiment of the present invention, the cleaning solution can optionally contain at least one organic peroxide which is selected from aliphatic and aromatic acid peroxides, in particular from carboxylic acid peroxides (R[C=O]-OOH, where R is an aliphatic or aromatic radical) such as peracetic acid , perpropionic acid, perbutyric acid, percitric acid, permalic acid, perglycolic acid, perlactic acid, persuccinic acid, perglutaric acid, peradipic acid, perbenzoic acid, persorbic acid, permalonic acid, permaleic acid, perfumaric acid, and their anhydrides, the so-called diacyl peroxides (R[C=O]-OO-[C=O ]R, where R is an aliphatic or aromatic radical), for example dibenzoyl peroxide, and mixtures thereof, with peracetic acid being particularly preferred. When used as biocides, organic peroxides have a particularly good surface disinfecting effect and can render germs, bacteria, fungi, spores, etc. on the surface to be treated harmless. This effect of the cleaning solution is further enhanced by the presence of at least one organic peroxide.

• - mindestens eine anorganische Peroxidverbindung,
• - mindestens eine organische Säure,
• - mindestens eine Alkoholverbindung,
• - mindestens eine oberflächenaktive Verbindung, und
• - gegebenenfalls mindestens eine organische Peroxidverbindung,

wobei die mindestens eine anorganische Peroxidverbindung in einer Menge von 0,03 bis 5 Gew.-% enthalten ist, die mindestens eine organische Säure in einer Menge von 0,01 bis 5 Gew.-% enthalten ist, die mindestens eine Alkoholverbindung in einer Menge von 0,1 bis 60 Gew.% enthalten ist und die mindestens eine oberflächenaktive Verbindung in einer Menge von 0,01 bis 10 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Reinigungslösung, und der Rest ist Wasser.According to the invention, particular preference is therefore given to a cleaning solution which contains:

• - at least one inorganic peroxide compound,
• - at least one organic acid,
• - at least one alcohol compound,
• - at least one surface-active compound, and
• - optionally at least one organic peroxide compound,

wherein the at least one inorganic peroxide compound is contained in an amount of 0.03 to 5% by weight, the at least one organic acid is contained in an amount of 0.01 to 5% by weight, the at least one alcohol compound is contained in an amount from 0.1 to 60% by weight and the at least one surface-active compound is contained in an amount from 0.01 to 10% by weight, in each case based on the total weight of the cleaning solution, and the balance is water.

The water content of the cleaning solution is usually at least 20% by weight, preferably 20 to 99.85% by weight, particularly preferably 50 to 90% by weight, based on the total weight of the coating solution.

In preferred embodiments, the pH of the cleaning solution is in a range from 2 to 3, preferably from 2 to 2.5.

In the multi-component composition according to the invention, the cleaning solution and the coating solution are spatially or physically separate from one another, e.g. in different containers, which makes it possible on the one hand to separate incompatible ingredients from one another and on the other hand it is possible to separate the cleaning solution and the coating solution to be offered in combination, although they can be used at different times.

The cleaning solution of the multi-component composition according to the invention described herein has an oxidative cleaning effect and a disinfecting effect. Since it also penetrates any cracks or indentations on the surface, hardening and impurities, especially organic impurities, on the surface to be treated are effectively dissolved or removed and organisms such as black fungi, algae, moss, cyanobacteria, etc. are rendered harmless. When cleaning the surface of solar or PV modules with the cleaning solution according to the invention, an increase in the performance of the modules can be achieved as a result.

The coating solution of the multi-component composition according to the invention described here brings about the formation of a coating on the surface to be treated. It was found that the microorganisms contained therein grow on the surface and a biological film is formed through the metabolism of the dirt deposits, which, depending on the food supply (i.e. the existing or newly deposited dirt), can last for several years, is gentle on the material and in the Interplay with the photoactive substance contained simultaneously develops a sustainable, continuous and environmentally friendly self-cleaning and protective effect. In addition, the optical brightener contained in the treatment of the surface of solar or PV modules improves the energy conversion efficiency of the module, especially in diffuse light and at sunrise and sunset, which increases the efficiency and cost-effectiveness of a PV system.

The multi-component composition according to the invention thus enables effective cleaning and, when treating surfaces of solar or PV modules, an increase in the performance of the modules and long-term avoidance of efficiency losses, which leads to an increase in the efficiency and profitability of PV systems, also from already existing systems.

Another object of the present invention is a kit for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces, the kit comprising: a cleaning solution comprising at least one inorganic peroxide compound and at least one organic acid, and a coating solution comprising at least one photoactive substance, at least one magnetotactic microorganism, at least one phototrophic microorganism and at least one optical brightener.

The kit may further comprise one or more of: instructions for use, a first container for the cleaning solution, preferably a plastic canister, e.g. made of polyethylene, a second container for the coating solution, preferably a plastic canister, e.g. made of polyethylene, a measuring cup, and personal protective equipment , such as protective gloves or goggles.

The coating solution is preferably the coating solution described above in connection with the multi-component composition according to the invention and configurations thereof.

• - mindestens einen magnetotaktischen Mikroorganismus, mindestens einen Mikroorganismus mit antimykotischer Wirkung und mindestens einen phototrophen Mikroorganismus,
• - mindestens eine photoaktive Substanz, und
• - mindestens einen optischen Aufheller,

wobei die Masse an Mikroorganismen 1 bis 30 Gew.-% beträgt, die mindestens eine photoaktive Substanz in einer Menge von 0,001 bis 0,3 Gew.-% enthalten ist und der mindestens eine optische Aufheller in einer Menge von 0,0001 bis 0,01 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Beschichtungslösung, und der Rest ist Wasser.Preferably the coating solution of the kit comprises:

• - at least one magnetotactic microorganism, at least one microorganism with antifungal activity and at least one phototrophic microorganism,
• - at least one photoactive substance, and
• - at least one optical brightener,

wherein the mass of microorganisms is 1 to 30% by weight, the at least one photoactive substance is contained in an amount of 0.001 to 0.3% by weight and the at least one optical brightener in an amount of 0.0001 to 0, 01% by weight is contained, in each case based on the total weight of the coating solution, and the remainder is water.

• - mindestens einen magnetotaktischen Mikroorganismus, mindestens einen Mikroorganismus mit antimykotischer Wirkung und mindestens einen phototrophen Mikroorganismus,
• - mindestens eine photoaktive Substanz,
• - mindestens einen optischen Aufheller,
• - mindestens ein Polysaccharid, und
• - mindestens ein Additiv ausgewählt aus Tensiden, Enthärtungsmitteln, Verdunstungsmitteln, Additiven zur Verbesserung des Ablauf- und Trocknungsverhaltens, zur Einstellung der Viskosität und/oder zur Stabilisierung, UV-Stabilisatoren, Perlglanzmitteln, Korrosionsinhibitoren, Konservierungsmitteln, Bitterstoffen, organischen Salzen, (strukturgebenden) Polymeren, Entschäumern, pH-Stellmittel, Hautgefühl-verbessernden oder pflegenden Additiven und Nährlösungen für Mikroorganismen,

wobei die Masse an Mikroorganismen 1 bis 30 Gew.-% beträgt, die mindestens eine photoaktive Substanz in einer Menge von 0,001 bis 0,3 Gew.-% enthalten ist, der mindestens eine optische Aufheller in einer Menge von 0,0001 bis 0,01 Gew.-% enthalten ist, das mindestens eine Polysaccharid in einer Menge von 0,01 bis 1 Gew.-% enthalten ist und das mindestens eine Additive in einer Menge von 0,001 bis 2,0 Gew.-%, enthalten ist, jeweils bezogen auf das Gesamtgewicht der Beschichtungslösung, und der Rest ist Wasser.The coating solution of the kit particularly preferably comprises:

• - at least one magnetotactic microorganism, at least one microorganism with antifungal activity and at least one phototrophic microorganism,
• - at least one photoactive substance,
• - at least one optical brightener,
• - at least one polysaccharide, and
• - at least one additive selected from surfactants, softening agents, evaporation agents, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, pearlescent agents, corrosion inhibitors, preservatives, bitter substances, organic salts, (structuring) polymers , defoamers, pH adjusters, additives that improve or care for the skin and nutrient solutions for microorganisms,

wherein the mass of microorganisms is 1 to 30% by weight, the at least one photoactive substance is contained in an amount of 0.001 to 0.3% by weight, the at least one optical brightener in an amount of 0.0001 to 0, 01% by weight, containing at least one polysaccharide in an amount of 0.01 to 1% by weight and containing at least one additive in an amount of 0.001 to 2.0% by weight, respectively based on the total weight of the coating solution and the balance is water.

The cleaning solution is preferably the cleaning solution described above in connection with the multi-component composition according to the invention and its configurations.

• - mindestens eine anorganische Peroxidverbindung und
• - mindestens eine organische Säure,

wobei die mindestens eine anorganische Peroxidverbindung in einer Menge von 0,03 bis 5 Gew.-% enthalten ist und die mindestens eine organische Säure in einer Menge von 0,01 bis 5 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Reinigungslösung, und der Rest ist Wasser.Preferably the coating solution of the kit comprises:

• - at least one inorganic peroxide compound and
• - at least one organic acid,

wherein the at least one inorganic peroxide compound is contained in an amount of 0.03 to 5% by weight and the at least one organic acid is contained in an amount of 0.01 to 5% by weight, based in each case on the total weight of the cleaning solution , and the rest is water.

• - mindestens eine anorganische Peroxidverbindung,
• - mindestens eine organische Säure,
• - mindestens eine Alkoholverbindung,
• - mindestens eine oberflächenaktive Verbindung, und
• - gegebenenfalls mindestens eine organische Peroxidverbindung,

wobei die mindestens eine anorganische Peroxidverbindung in einer Menge von 0,03 bis 5 Gew.-% enthalten ist, die mindestens eine organische Säure in einer Menge von 0,01 bis 5 Gew.-% enthalten ist, die mindestens eine Alkoholverbindung in einer Menge von 0,1 bis 60 Gew.% enthalten ist und die mindestens eine oberflächenaktive Verbindung in einer Menge von 0,01 bis 10 Gew.-% enthalten ist, jeweils bezogen auf das Gesamtgewicht der Reinigungslösung, und der Rest ist Wasser.The coating solution of the kit particularly preferably comprises:

• - at least one inorganic peroxide compound,
• - at least one organic acid,
• - at least one alcohol compound,
• - at least one surface-active compound, and
• - optionally at least one organic peroxide compound,

wherein the at least one inorganic peroxide compound is contained in an amount of 0.03 to 5% by weight, the at least one organic acid is contained in an amount of 0.01 to 5% by weight, the at least one alcohol compound is contained in an amount from 0.1 to 60% by weight and the at least one surface-active compound is contained in an amount from 0.01 to 10% by weight, in each case based on the total weight of the cleaning solution, and the balance is water.

The advantageous effects and advantages described in connection with the multi-component composition according to the invention are consequently also achieved with the kit according to the invention for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces.

1. I) Bereitstellen einer Reinigungslösung;
2. II) Bereitstellen einer Beschichtungslösung;
3. III) Auftragen der Reinigungslösung auf die zu behandelnde Oberfläche; und
4. IV) Auftragen der Beschichtungslösung auf die zu behandelnde Oberfläche.

The present invention also relates to a method for treating surfaces, in particular for treating natural and artificially produced organic surfaces and glass surfaces, using the multi-component composition according to the present invention or the kit according to the present invention, the method preferably comprising the steps :

1. I) providing a cleaning solution;
2. II) providing a coating solution;
3. III) applying the cleaning solution to the surface to be treated; and
4. IV) Applying the coating solution to the surface to be treated.

In step I) of providing the cleaning solution, a basic mixture of the cleaning solution is first provided by mixing water, preferably softened water, with the at least one inorganic peroxide compound and the at least one organic acid in a suitable container, for example a polyethylene (PE) plastic canister , and optionally the at least one alcohol compound and/or the at least one surface-active compound, is mixed in the desired ratio, for example by stirring. To obtain the cleaning solution, the resulting base mixture of the cleaning solution is mixed with water, preferably softened water, in a suitable container, for example a PE plastic canister, in a ratio of 1:10 to 3:1 (i.e. 1-3 volume units of base mixture , 1-10 volume units of water) based on the volume of the base mixture used, mixed and optionally the at least one organic peroxide added, preferably in an amount of 0.001 to 0.24% by volume based on the volume of the base mixture used, and mixed, for example by stirring.

The definitions and amounts for the inorganic peroxide compound, the organic acid, the alcohol compound, the surface-active compound and the organic peroxide described above in connection with the multicomponent composition according to the invention also apply to the process according to the invention described here.

The amount of cleaning solution base mixture provided and the amount of water with which the base mixture obtained is mixed can be selected depending on the degree of soiling of the surface to be treated.

In step II) of providing the coating solution, a base mixture of the coating solution is first provided by mixing water, preferably softened water, with the at least one photoactive substance, the at least one magnetotactic microorganism, the at least a microorganism with an antimycotic effect, the at least one phototrophic microorganism and the at least one optical brightener, and optionally the at least one polysaccharide, is mixed in the desired ratio, for example by stirring. To obtain the coating solution, the resulting base mixture of the coating solution is mixed with water, preferably softened water, in a suitable container, for example a PE plastic canister, in a ratio of 1:5 to 1:10 (1 volume unit of base mixture, 5-10 volume units water), based on the volume of the egg th base mixture, mixed and optionally added the at least one additive and mixed, for example by stirring.

The definitions and amounts for the photoactive substance, the magnetotactic microorganism, the microorganism with an antifungal effect, the phototrophic microorganism, the optical brightener and the additive(s) described above in connection with the multi-component composition according to the invention also apply to what is described here method according to the invention.

Steps I) and II) of providing the cleaning solution and the coating solution can be carried out in any order.

Steps III) and IV) of applying the cleaning solution to the surface to be treated and applying the coating solution to the surface to be treated are preferably carried out in this order, ie step IV is preferably carried out after step III).

The cleaning solution can be applied to the surface to be treated using any of the application methods and devices known to those skilled in the art. The cleaning solution is particularly preferably sprayed on or sprayed on uniformly using suitable equipment.

By applying the cleaning solution described herein, which has an oxidizing and disinfecting effect and which also penetrates into any cracks or indentations on the surface, hardening and impurities, in particular organic impurities, can be dissolved or removed on the surface to be treated with the method according to the invention and Organisms such as black fungi, algae, moss, cyanobacteria, etc. are rendered harmless. By cleaning the surface of solar or PV modules with the cleaning solution described herein, an increase in the performance of the modules can be achieved with the method according to the invention.

It is preferred according to the invention if there are at least 15 minutes between the step of applying the cleaning solution and the step of applying the coating solution, so that the cleaning solution can act sufficiently on the contaminants and dissolve them. It is also preferred according to the invention if there is a maximum of 24 hours between the step of applying the cleaning solution and the step of applying the coating solution, since there is no longer any increase in the cleaning effect of the cleaning solution. Particularly preferably, there is a period of 15 minutes to 24 hours between the step of applying the cleaning solution and the step of applying the coating solution.

In a preferred embodiment of the method according to the invention, after the step of applying the cleaning solution and before the step of applying the coating solution, one or more cleaning steps are carried out in order to clean the surface to be treated and remove impurities, the number of cleaning steps depending on the degree of Contamination of the surface to be treated depends.

It is preferred according to the invention if an initial cleaning step takes place no earlier than 15 minutes after the step of applying the cleaning solution, so that the cleaning solution can act sufficiently on the contamination and dissolve it. It is also preferred according to the invention if an initial cleaning step takes place up to a maximum of 24 hours after the step of applying the cleaning solution, since there is no further increase in the cleaning effect of the cleaning solution beyond this. An initial cleaning step particularly preferably takes place 15 minutes to 24 hours after the step of applying the cleaning solution.

All cleaning methods and devices known to the person skilled in the art can be used for the cleaning step(s), devices with brushes, which preferably rotate, being particularly suitable. Devices that have an integrated spray system are also particularly suitable in order to be able to remove the dirt dissolved by the cleaning solution gently and without exerting pressure.

Depending on the degree of soiling or the result of the previous cleaning, cleaning solution can be reapplied to the surface to be treated between two cleaning steps until the desired cleaning result is achieved. A further step of providing cleaning solution may be required for this.

The application of the coating solution to the surface to be treated according to step IV) of the method according to the invention can be carried out by any application method and device known to the person skilled in the art. The coating solution is particularly preferably sprayed or sprayed on uniformly using suitable equipment.

By applying the coating solution described herein to the surface to be treated, which is the last step in the process, the process according to the invention achieves the formation of a microbiological coating on the surface that is gentle on the material and through the interaction of the microorganisms contained therein and the microorganisms contained therein photoactive substance simultaneously develops a sustainable, continuous and environmentally friendly self-cleaning and protective effect, as already described above.

In addition, it was surprisingly found that by applying the coating solution to the surface of solar or PV modules according to the method, the optical brightener contained ensures that the energy conversion efficiency of the module, especially in diffuse light and at sunrise and sunset, is improved, which the efficiency and profitability of a PV system is increased.

With the method according to the invention, effective cleaning and, when treating the surfaces of solar or PV modules, an increase in the performance of the modules and long-term avoidance of efficiency losses can be achieved, which leads to an increase in the efficiency and profitability of PV systems , also from existing systems.

Another object of the present invention also relates to the use of the multi-component composition described herein or the kit described herein for the treatment of natural and artificially produced organic surfaces and glass surfaces, in particular for the treatment of the surface of solar and photovoltaic modules in order to achieve the advantageous effects mentioned above to reach.

Examples of natural and artificial organic surfaces and glass surfaces which can be treated with the multi-component composition described herein, the kit described herein and/or the method described herein and are suitable for the use described herein in order to achieve one or more of the advantageous effects described include in particular surfaces made of glass or plexiglass (acrylic glass, polymethyl methacrylate) of windows, in particular skylights, conservatories, a veranda, sun sails and sun protection, as well as surfaces of solar or PV modules with glass sealing or with a plastic protective film applied thereto, without being limited to this.

Another object of the present invention relates to the use of a cleaning solution for the production of a kit for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces, the kit comprising the cleaning solution and a coating solution, the cleaning solution containing at least one inorganic peroxide compound and at least one organic acid, and wherein the coating solution comprises at least one photoactive substance, at least one microorganism with antifungal activity, at least one magnetotactic microorganism, at least one phototrophic microorganism and at least one optical brightener.

The kit may further comprise one or more of: instructions for use, a first container for the cleaning solution, preferably a plastic canister, e.g. made of polyethylene, a second container for the coating solution, preferably a plastic canister, e.g. made of polyethylene, a measuring cup, and personal protective equipment , such as protective gloves or goggles.

The kit is preferably the kit according to the invention as described herein.

The cleaning solution is preferably the cleaning solution described above in connection with the multi-component composition according to the invention and its configurations.

The coating solution is preferably the coating solution described above in connection with the multi-component composition according to the invention and configurations thereof.

The present invention will now be described in more detail in the following examples, which are given by way of illustration only and are not intended to limit the invention in any way.

Examples:

1. Example 1: Investigation of the effectiveness of the cleaning and the coating

The effectiveness of cleaning and coating with the cleaning solution and coating solution of the multi-component composition described herein was examined on 6 c-Si photovoltaic modules with different degrees of soiling.

1.1 Cleaning and coating the modules

To clean the modules, 30-40 mL of the cleaning solution according to the invention, which contains peracetic acid, was sprayed onto the modules using a knapsack sprayer. After an exposure time of 20 minutes, the modules were washed off with a hand brush suitable for cleaning photovoltaics using softened water.

After one hour of vertical storage, the modules were dry. 60 mL of the coating solution according to the invention, consisting of 1 part base solution including additives and 10 parts softened water, were sprayed on per square meter. The modules dried within 1.5 hours before the measurement was carried out.

1.3 Proof of cleaning/coating effectiveness

• - STC-Leistungsmessung der PV-Module im verschmutzen Zustand
• - Reinigung der PV-Module mit erfindungsgemäßer Reinigungslösung
• - STC-Leistungsmessung der PV-Module nach Reinigung
• - Beschichtung der PV-Module mit erfindungsgemäßer Beschichtungslösung
• - STC-Leistungsmessung der PV-Module nach Reinigung

In order to demonstrate the effect of cleaning and coating on the performance of the modules, the measurements below were carried out on the AAA grade calibrated solar simulator under Standard Test Conditions (STC), at 25°C, 1000W/m ² and spectrum AM1.5:

• - STC performance measurement of the PV modules in a dirty state
• - Cleaning of the PV modules with cleaning solution according to the invention
• - STC performance measurement of the PV modules after cleaning
• - Coating of the PV modules with coating solution according to the invention
• - STC performance measurement of the PV modules after cleaning

Examined PV modules: module type SYP 260P manufacturer rises cells poly-c-Si, 6", 60 cells modular structure Glass/back sheet, Al frame number 1 module module type QPRO G3-255 manufacturer Q Cells cells poly-c-Si, 6", 60 cells modular structure Glass/back sheet, Al frame number 5 modules

1.4. Results

Table 1 shows the performance changes of the 6 modules before (P _{before_cleaning} ) and after cleaning (P _{after_cleaning} ) with the cleaning solution described herein, as well as the change (ΔP cleaning) Table 1: No. module type LK P _{before_cleaning} P _{after_cleaning} ΔP cleaning [W] [W] [W] [W] [%] M01 Q PRO-G3 255 255 233.7 246.9 13.3 5.7 M02 Q PRO-G3 255 255 232.6 249.1 16.6 7.1 M03 Q PRO-G3 255 255 237.8 250.5 12.7 5.3 M04 Q PRO-G3 255 255 239.0 248.9 9.9 4.2 M05 Q PRO-G3 255 255 235.5 249.0 13.5 5.7 M06 Risen SYP260P 260 218.9 230.5 11.6 5.3 Average 12.9 5.6

As can be seen from Table 1, cleaning the modules with the cleaning solution of the multi-component composition according to the invention leads to a power increase of 9.9 W to 16.6 W, corresponding to a relative improvement of 4.2% to 7.1%. On average, the module performance improves by 5.6% through cleaning. After cleaning, up to 98% of the performance values (LK) specified by the manufacturer are achieved again. The reason for the remaining difference is the generally low annual degradation.

The influence of the coating on the module performance (P _{after_coating} ) is shown in Table 2. In addition, the short-circuit current ( _ISC ) of the modules after cleaning and after coating and its change (Δ I coating) are listed. Changes in the optical properties of a PV module primarily affect the short-circuit current. Table 2: No. P _{after_ cleaning} P _{after_ coating} Δ coating P I _{SC_ Cleaning} I _{SC_ coating} Δ coating I [W] [W] [W] [%] [A] [a] [A] [%] M01 246.9 246.8 -0.1 0.0 9.03 8.99 -0.04 -0.5 M02 249.1 247.0 -2.2 -0.9 9.05 9.00 -0.05 -0.5 M03 250.5 249.6 -0.9 -0.4 9.08 9.04 -0.05 -0.5 M04 248.9 243.7 -1.6 -0.7 9.08 9.02 -0.06 -0.7 M05 249.0 247.3 -1.6 -0.7 9.08 9.02 -0.06 -0.7 M06 230.5 229.8 -0.8 -0.3 8.96 8.90 -0.07 -0.8 Average -1.8 -0.7 -0.1 -0.9 Average (without M04) -1.1 -0.5 -0.1 -0.6

As can be seen from Table 2, coating with the coating solution of the multi-component composition of the present invention causes a slight drop in modulus performance. With the exception of module M04, the module output is reduced by 0% to 0.9%. On average, the power decrease is 0.5%. This is consistent with a 0.5% to 0.8% decrease in short circuit current. On average, the modules lose 0.6% of their short-circuit current.

Module M04 must be considered separately. This module was coated vertically while the other modules were coated horizontally. After the coating had dried on, module M04 showed clearly visible streaks. The power loss of 2.1% or the short-circuit current loss of 2.4% is therefore presumably due to the coating process and the associated formation of streaks.

2. Example 2: Investigation of the angle dependence of the coating

• - Bereitstellung eines c-Si Moduls
• - Winkelabhängige Messung des Kurzschlussstroms (ISC) bei unterschiedlichen Winkeln der Modulebene zur Einstrahlebene (0° bis 85° in 5°-Schritten) im Ausgangszustand
• - Beschichtung des PV-Modules mit erfindungsgemäßer Beschichtungslösung
• - Wiederholung der winkelabhängigen Messung von ISC bei unterschiedlichen Winkeln der Modulebene zur Einstrahlebene (0° bis 85° in 5°-Schritten)

In order to investigate the influence of the coating on the angle dependence of a module, the influence of the coating on the angle-dependent response of a PV module was determined quantitatively on a c-Si photovoltaic module by comparative measurement of the STC short-circuit currents. The following steps were carried out:

• - Provision of a c-Si module
• - Angle-dependent measurement of the short-circuit current (ISC) at different angles of the module plane to the irradiation plane (0° to 85° in 5° increments) in the initial state
• - Coating of the PV module with coating solution according to the invention
• - Repetition of the angle-dependent measurement of ISC at different angles of the module plane to the irradiation plane (0° to 85° in 5° increments)

Examined PV module: module type TSM-270DC05A.082- manufacturer Trina Solar cells mono-c-Si, 6", 60 cells, 5BB modular structure Glass/back sheet, Al frame number 1 module

2.1 Coating of the module:

The PV module was coated by spraying on 60 mL per square meter of the coating solution according to the invention, consisting of 1 part base solution and 10 parts softened water and additives. The module dried within 1.5 hours before the measurement was carried out.

2.2. Carrying out the measurement

During the investigation, the angle-dependent short-circuit current (Isc) was measured (ISC _,mess ) on a calibrated sun simulator of quality class AAA under standard test conditions (STC), at 25°C, 1000W/m ² and spectrum AM1.5 and with the cosine of the Angle of incidence φ corrected according to Equation 1 ( _ISC,korr ). An angle of incidence of φ = 0 corresponds to perpendicular incidence of light on the module surface. $$I_{SC,kO\mathrm{right}\mathrm{right}}=I_{SC,mess}\cdot \frac{1}{cOs\phi }$$

The series of measurements was carried out before and after treating the surface with the coating solution. The measurement results are listed in Table 3. Table 3: Without treatment after treatment the change angle φ I _{SC, mess} ISC _{, corr} I _{SC, mess} ISC _{, corr} Δ I _{SC, corr} [◦] [A] [A] [A] [A] [%] 0 9,252 9,252 9.186 9.186 -0.7 5 9.215 9,251 9.152 9.187 -0.7 10 9.111 9,251 9,048 9.188 -0.7 15 8,936 9,251 8,873 9.186 -0.7 20 8,680 9,237 8,631 9.185 -0.6 25 8,376 9,242 8,331 9.192 -0.5 30 7,994 9,230 7,951 9,180 -0.5 35 7,553 9,220 7,517 9.176 -0.5 40 7,078 9.2440 7.018 9.162 -0.8 45 6,515 9,241 6,466 9.144 -0.8 50 5,883 9.152 5,851 9.103 -0.5 55 5.201 9,068 5.183 9,037 -0.4 60 4,466 8,933 4,469 8,937 0.0 65 3,685 8,720 3,673 8,692 -0.3 70 2,842 8.311 2,856 8,349 0.5 75 2,014 7,781 2,023 7,818 0.5 80 1.206 6,944 1,230 7,081 2.0 85 0.538 6.169 0.550 6,313 2.3

As can be seen from Table 3, the corrected short-circuit current after coating at an angle of incidence of 55° is between 0.4% and 0.8% below that of the untreated module. This is consistent with the results of the proof of effectiveness of cleaning and coating from Example 1. At angles of incidence greater than 65°, when the reflection on the glass surface increases significantly, the coating has a positive effect. The corrected short-circuit current improves here by 0.5% to 2.3%.

Claims (25)

Multi-component composition for surface treatment, in particular for the treatment of natural and artificially produced organic surfaces and glass surfaces, comprising a cleaning solution and a coating solution, which are present separately from one another, wherein the cleaning solution comprises at least one inorganic peroxide compound and at least one organic acid, and wherein the coating solution comprises at least one photoactive substance, at least one magnetotactic microorganism, at least one microorganism with antifungal activity, at least one phototrophic microorganism and at least one optical brightener. Multi-component composition according to claim 1 , wherein the at least one photoactive substance is selected from metal oxide particles and semimetal oxide particles. Multi-component composition according to claim 1 or 2 , wherein the amount of the at least one photoactive substance in the coating solution is in a range from 0.001 to 0.3% by weight, based on the total weight of the coating solution. Multi-component composition according to one of Claims 1 - 3 , wherein the amount of the at least one optical brightener in the coating solution is in a range from 0.0001 to 0.01% by weight based on the total weight of the coating solution. Multi-component composition according to one of Claims 1 - 4 , wherein the mass of microorganisms in the total coating solution is in a range of 1 to 30% by weight based on the total weight of the coating solution. Multi-component composition according to one of Claims 1 - 5 , wherein the coating solution further contains at least one polysaccharide. Multi-component composition according to claim 6 , wherein the at least one polysaccharide is an aminopolysaccharide. Multi-component composition according to claim 6 or 7 wherein the at least one polysaccharide is a chitin-based aminopolysaccharide. Multi-component composition according to one of Claims 6 - 8th , wherein the amount of the at least one polysaccharide in the coating solution is in a range from 0.01 to 1% by weight based on the total weight of the coating solution. Multi-component composition according to one of Claims 1 - 9 , wherein the coating solution also contains at least one additive selected from surfactants, softeners, evaporation agents, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, pearlescent agents, corrosion inhibitors, preservatives, bitter substances, organic salts , (structuring) polymers, defoamers, pH adjusters, skin feel-improving or care additives and nutrient solutions for microorganisms, preferably in a total amount of 0.001 to 2.0 wt .-%, based on the total weight of the coating solution. Multi-component composition according to one of Claims 1 - 10 , wherein the at least one inorganic peroxide compound is selected from hydrogen peroxide and peroxides from the group of peroxosulfates, percarbonates and perborates, and mixtures thereof. Multi-component composition according to one of Claims 1 - 11 , wherein the amount of the at least one inorganic peroxide compound in the cleaning solution is in a range from 0.03 to 5% by weight based on the total weight of the cleaning solution. Multi-component composition according to one of Claims 1 - 12 , wherein the at least one organic acid is selected from aliphatic and aromatic, mono- and polybasic carboxylic acids and carboxylic acid derivatives, and mixtures thereof. Multi-component composition according to one of Claims 1 - 13 , wherein the amount of the at least one organic acid in the cleaning solution is in a range from 0.01 to 5% by weight based on the total weight of the cleaning solution. Multi-component composition according to one of Claims 1 - 14 , wherein the cleaning solution contains at least one alcohol compound selected from monohydric or polyhydric alcohols, alkanolamines, glycols and glycol ethers, and mixtures thereof, preferably in an amount of 0.1 to 60% by weight, and/or at least one surface-active agent Contains a compound selected from ionic surfactants, nonionic surfactants, amphoteric surfactants and mixtures thereof, preferably in an amount of 0.01 to 10% by weight, based in each case on the total weight of the cleaning solution. Multi-component composition according to one of Claims 1 - 15 , wherein the cleaning solution further contains at least one organic peroxide selected from aliphatic and aromatic acid peroxides and their anhydrides, and mixtures thereof. Kit for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces, the kit comprising: a cleaning solution which comprises at least one inorganic peroxide compound and at least one organic acid, and a coating tion solution comprising at least one photoactive substance, at least one magnetotactic microorganism, at least one microorganism with an antifungal effect, at least one phototrophic microorganism and at least one optical brightener. Process for the treatment of surfaces, in particular for the treatment of natural and artificially produced organic surfaces and glass surfaces, using the multi-component composition according to one of Claims 1 - 16 or the kit Claim 17 comprising the steps of: I) providing a cleaning solution; II) providing a coating solution; III) applying the cleaning solution to the surface to be treated; and IV) applying the coating solution to the surface to be treated. procedure after Claim 18 , wherein providing the cleaning solution comprises: I1) providing a base mixture by mixing water with the at least one inorganic peroxide compound and the at least one organic acid, and optionally the at least one alcohol compound and/or the at least one surface-active compound; and I2) mixing the base mixture from I1) with water in a ratio of 1:10 to 3:1, based on the volume of the base mixture from I1), and optionally adding the at least one organic peroxide to obtain the cleaning solution. procedure after Claim 18 or 19 , wherein providing the coating solution comprises: II1) providing a base mixture by mixing water with the at least one photoactive substance, the at least one magnetotactic microorganism, the at least one microorganism with an antimycotic effect, the at least one phototrophic microorganism and the at least one optical brightener, and optionally adding the at least one polysaccharide; II2) Mixing the base mixture from II1) with water in a ratio of 1:5 to 1:10, based on the volume of the base mixture from II1), and optionally adding the at least one additive to obtain the coating solution. Procedure according to one of claims 18 until 20 wherein there is at least 15 minutes between the step of applying the cleaning solution and the step of applying the coating solution. Procedure according to one of claims 18 until 21 wherein one or more cleaning steps are carried out after the step of applying the cleaning solution and before the step of applying the coating solution in order to clean the surface to be treated. procedure after Claim 22 wherein an initial cleaning step occurs up to a maximum of 24 hours, and preferably not earlier than 15 minutes, after the step of applying the cleaning solution. Use of a multi-component composition according to one of Claims 1 - 16 or a kit Claim 17 for the treatment of natural and artificially produced organic surfaces and glass surfaces, in particular for the treatment of the surface of solar and photovoltaic modules. Use of a cleaning solution for producing a kit for surface treatment, in particular of natural and artificially produced organic surfaces and glass surfaces, the kit comprising the cleaning solution and a coating solution, the cleaning solution comprising at least one inorganic peroxide compound and at least one organic acid, and the coating solution comprising at least a photoactive substance, at least one magnetotactic microorganism, at least one microorganism with an antifungal effect, at least one phototrophic microorganism and at least one optical brightener.