CN103189491B - There is the clean-out system of urea composition - Google Patents

Abstract

The invention relates to a cleaning agent for cleaning surfaces of all types of vehicles, large outdoor surface areas, especially buildings, facilities in the food, beverage, tobacco and alcohol industries, especially milking equipment, and with Surfaces of facilities and equipment with metal, ceramic and/or plastic surfaces. The cleaning agent comprises: (a) 10% to 90% urea, (b) 5% to 70% by weight of one or more electrolytes, (c) 0.1% to 35% by weight of a or more surfactants, and (d) 0.01% to 20% by weight of one or more complexing agents. The cleaner is environmentally friendly and cost-effective, very effective and advantageously reduces the amount of enzymes and bleach used in conventional cleaners. The cleaning agent contains in particular only biodegradable and/or biorenewable substances.

Description

Cleaning agent with urea component

The invention relates to a cleaning agent for cleaning surfaces of all types of vehicles, large exterior surfaces, especially buildings, installations in the food and tobacco and alcohol industries, especially milking equipment or milking equipment, and Facilities and equipment with metal, ceramic and/or plastic surfaces. In addition, it involves different optimizations of the above-mentioned applications. This reagent is therefore also suitable for washing, sanitizing and/or disinfecting equipment and medical devices in the food processing industry. Furthermore, the cleaning agents according to the invention can be used for cleaning milking facilities/milking machines, for cleaning large surfaces (such as surfaces of buildings or floors), for cleaning vehicles (such as cars) or for cleaning dentures.

Closed systems are understood according to the invention to mean equipment that are completely isolated from their environment during operation, such as dishwashers, washing machines, etc.; Equipment that is opened at times, e.g. for food processing or alternatively medical technology equipment, e.g. flushing devices for operating theaters and dental chairs, dialysis equipment, heart/lung machines, endoscopes and similar medical technology equipment . In the first-mentioned system, the cleaning agent is circulated during operation; while in the last-mentioned system, the system is flushed with the cleaning agent. In this case, the cleaning agent is used not only for cleaning purposes, but also for cleaning and/or optionally for disinfection.

Cleaning agents for closed systems, such as dishwashing detergents, washing machine detergents, hand rinses and sanitary cleaners, are agents used in almost every household. Modern dishwashing detergents, such as those described in WO2007/141257, typically contain surfactants, builders, bleaches and enzymes as main ingredients.

Enzymes are molecules, especially proteins, that catalyze a certain chemical reaction. Enzymes play an important role in the metabolism of all living organisms; they catalyze and control multiple biochemical reactions, such as the replication (DNA polymerase) or transcription (RNA polymerase) of genetic information. For example, proteases, amylases, catalases, peroxidases, cellulases and/or lipases are used as enzymes in dishwasher detergents. The use of proteases and amylases is preferred.

Enzymes are relatively expensive compared to other components of modern cleaning agents, dishwasher detergents or sanitary cleaners used in closed systems. Despite the use of expensive enzymes, the cleaning action of modern cleaning agents such as dishwasher detergents is often only unsatisfactory. Furthermore, the use of enzymes is often associated with disadvantages, for example the dishwasher cleaner can only be used within a certain temperature and pH range; and stability problems can arise, especially with respect to relatively long-term storage. Finally, it is problematic from an environmental point of view if uncontrolled amounts of enzymes get into the wastewater. Furthermore, working with enzymes is not without its problems (eg, allergic potential) in the manufacture or use of enzyme-containing products.

Therefore, the object of the present invention is to overcome the disadvantages explained above, in particular to make available cleaning agents which are environmentally friendly and surface-friendly in different use possibilities and which are available in a wide Desirably effective in the pH range (neutral, alkaline, acidic). From an environmental and cost point of view, such cleaning agents should be possible to achieve without conventional environmentally polluting phosphate builders, and advantageously reduce the amount of enzymes and bleaches used, which Agents are used in conventional cleaning agents. It should make it possible to use preferably only biodegradable and/or biorenewable substances, in particular only those substances which are degradable according to ENI ISO 14593:199 (headspace test).

The cleaning agent (A) generally achieves the object on which the present invention is based for cleaning surfaces of all types of vehicles, large exterior surfaces, especially buildings, installations in the food and tobacco and alcohol industries, especially extrusion Milk equipment, and facilities and equipment having metal, ceramic and/or plastic surfaces, the cleaning agent containing (a) 10% to 90% urea, (b) 5% to 70% by weight of one or more An electrolyte, (c) 0.1% to 35% by weight of one or more surfactants and (d) 0.01% to 20% by weight of one or more complexing agents.

The cleaning agent (A) can be advantageously optimized in particular in such a way that it is therefore preferred that it comprises 10% to 70% by weight, in particular 20% to 60% by weight, of urea. Furthermore, the electrolyte is suitably present in the form of alkali metal salts and/or alkaline earth metal salts, especially in the form of sodium salts. Complexing agents considered according to the invention are preferably in the form of citrate, nitrilotriacetate (NTA), ethylenediaminetriacetate (TED), ethylenediaminetetraacetate (EDTA) ), methylglycine acetate (MGDA), especially as the sodium salt.

Different advantageous optimizations of the cleaning agent (A) are described below, including advantageous embodiments of the cleaning agent (A) in the form of cleaning agents (B) to (H) according to the invention. Furthermore, certain advantageous optimizations refer specifically to the corresponding cleaning agents (B) to (H). Following the description of the cleaning agent (H), various details of advantageous embodiments of all cleaning agents according to the invention are found. Based on the intended use of the cleaning agent, a person skilled in the art will consider particularly advantageous optimization features.

A particular optimization of cleaning agent (A) is also in its advantageous and described embodiment, proven in cleaning agent (B) for cleaning the surfaces of: motor vehicles of all types, In particular heavy goods vehicles, buses, automobiles, motorcycles, bicycles, tractors, boats, aircraft, especially those with surfaces based on metal and/or plastic, here in particular paint, which additionally contain a thickener , especially in the form of carboxymethylcellulose, preferably in an amount from 0.001% to 3% by weight. The amount of thickener is preferably 0.001% to 1% by weight. Bearing in mind that metals, especially metal surfaces, are also cleaned, it is particularly advantageous in the case of the cleaning agent (B) that it contains a corrosion inhibitor, especially in the form of a phosphonate. The corrosion inhibitor is preferably present in an amount of from 0.1% to 5% by weight. This is particularly advantageous if the cleaning agent (B) comprises care agents, in particular in the form of silicone and/or wax emulsions. In addition, it is advantageous for abrasives, especially in the form of silica, to be contained in the cleaning agent (B), especially in amounts of from 0.001% to 1% by weight. It should be noted here that the advantageous features described in connection with this cleaning agent (B) can of course also be used for the advantageous optimization of the cleaning agent (A) described above.

A particular embodiment of cleaning agent (A) according to the invention consists of cleaning agent (C) for cleaning all types of exterior surfaces, in particular floor surfaces, roofs, wall surfaces, aisle and balcony surfaces and solar panel surfaces, etc. Wait. It is characterized in that it contains decalcifying agents and/or microbicides, especially against algae, mosses, fungi and/or lichens. In the case of the cleaning agent (C), it is preferred that it contains a decalcifying agent, especially in the form of sulfamic acid and/or citric acid. The amount of decalcifying agent is preferably about 1% to 20% by weight, especially about 5% to 15% by weight. Silicon dioxide is preferred here as an abrasive. The abrasive is preferably present in an amount of from 0.1% to 5% by weight. The amount of silicon dioxide is suitably between 0.1% and 3% by weight. As can be seen by a person skilled in the art, the preferred embodiments mentioned here for cleaning agent (C) also apply in general as possible advantageous embodiments of cleaning agents (A) and (B).

A particularly advantageous embodiment of the cleaning agent (A) according to the invention proves to be in the cleaning agent (D), which is characterized in the treatment of all types of metal surfaces, in particular iron, stainless steel, aluminium, magnesium, titanium, copper, Zinc, tin, brass or chromed surfaces, which contain corrosion inhibitors, especially in the form of a phosphonate, in the case of milking equipment and surgical equipment. It is generally preferred here that it comprises the corrosion inhibitor in an amount of from 0.1% to 5% by weight, in particular in an amount of from 0.3% to 3% by weight. Furthermore, it is preferred that, in the case of alkaline applications, a bleach is present, especially in the form of a per-compound. It is preferred here that the percompound is present in the form of a persulfate and/or percarbonate, in particular in the form of the sodium salt, in particular in an amount of from 0.1% to 5% by weight . The range from 0.1% to 3% by weight is particularly preferred. In the case of the cleaning agent (D), it is furthermore preferred to use a suitable activator, in particular in the form of tetraacetylethylenediamine (TAED), in order to adjust the desired effect of the bleach. Furthermore, for the degradation of organic matter, it is preferred to incorporate enzymes, especially in an amount of from 0.1% to 5% by weight, with a range of from 0.3% to 3% by weight being particularly preferred. The cleaning agent (D) preferably contains citric acid and/or sulfamic acid when used in an acidic medium.

A further preferred cleaning agent according to the invention (A) will be designated here as cleaning agent (E). This cleaning agent is used for cleaning ceramic and/or plastic surfaces of dentures, and is characterized in that it contains acids, in particular citric acid, and alkali metal bicarbonates for gas evolution, in particular from 1% by weight To an amount of 10%, these surfaces of the denture are based in particular on: plastic, bridges made of metal, based on ceramics, based on VMC (metal-ceramic veneers) and based on zirconium dioxide as all-ceramic crowns and all-ceramic bridges Structure.

The cleaning agent (E) preferably contains bleach, especially in the form of a per-compound, especially together with an associated activator. The percompound is preferably a percarbonate, especially in the form of the sodium salt. Finally, the cleaning agents (E) according to the invention preferably contain a stabilizer, especially in the form of a sugar alcohol, especially in the form of sorbitol. It would be advantageous if it contained an antimicrobial agent, especially effective against yeasts, Streptococcus, Escherichia and against Pseudomonas and Legionella.

In addition, the advantages of the cleaning agent (A) according to the invention also prove to be in the cleaning agent (F), which is used to treat kitchen equipment or kitchen machines, in particular coffee machines, hot water boilers, egg cookers, baby bottles Baby bottle warmers as well as baby bottles and baby jugs, where it is also possible to implement the features highlighted above in combination with other cleaning agents according to the invention as advantageous.

Finally, the invention provides another cleaning agent (G) which is particularly advantageous for treating surfaces of surgical equipment as well as surfaces of milking equipment. Here, the surfaces to be treated are mainly of a metallic nature, especially based on iron, stainless steel, aluminium, magnesium, titanium, copper, zinc, tin, brass; and one-piece sealing components, especially plastic, or plastic one-piece display mirror or special mirror.

The cleaning agents (A) to G) according to the invention as described above and the following cleaning agents (H) according to the invention can be present in solid form or in liquid form. In liquid form, the quantitative and qualitative details of the description and claims of the invention are embodied. Suitably, it is first present in solid form. It is preferred here that it is present in the form of particles, in particular in the form of a powder. It is especially preferred if it is presented as a compressed article or tablet or is filled into a sachet. In this form, it can be introduced into various fields of use. Depending on the application, it may be preferable to prepare solutions from the cleaning agents according to the invention, especially in water. In individual cases, it is preferred to use, in addition to water, a water-miscible organic solvent, provided that the underlying object of the invention, in particular environmental protection, is fully taken into account hereby.

In carrying out the invention, a cleaning agent has also proven to be particularly advantageous, which is contained in a kit and in which case all the above-mentioned Outlined framework conditions according to the invention, in particular urea is initially spaced from the other constituents of the cleaning agent.

An important feature of the present invention is the use of large amounts of urea (urea). In the case of the cleaning agent according to the invention, advantageous results are derived from the properties of urea in advantageous combination with further features. Back to urea (urea):

It is a neutral, odorless, highly water-soluble, non-toxic product, which is excreted by the human body in an amount ranging from 20 to 30 g per day as the final product of nitrogen metabolism, and is considered to be one of the most environmentally friendly substances in nature one. Here it can be broken down into its components NH ₃ and CO ₂ by chemical degradation. From this point of view, urea - which is seen chemically as the diamide of carbonic acid - can be seen as the combined form of the two gaseous components NH ₃ and CO ₂ (in a 2:1 ratio), whereby, It is industrially produced on a large scale due to its use in the fields of fertilizers and synthetic resins. Thus, the use of urea in the cleaning agent according to the invention produces a residue-free, consistent mass balance compared to environmentally polluting phosphate-based cleaning agents, which makes a not insignificant contribution to environmental protection .

The present invention also particularly relates to a cleaning agent (H), comprising

(a) 5% to 99.9% by weight of urea and/or one or more of its derivatives;

(b) 0.1% to 90% by weight of an electrolyte or electrolytes;

(c) up to 40% by weight of a surfactant or surfactants;

(d) up to 10% by weight of an enzyme or enzymes, and

(e) up to 20% by weight of a complexing agent or complexing agents, wherein, in order to achieve the desired effect according to the invention in the individual field of application, one or more features and/or in Features specified in the context are used to optimize the invention.

The composition according to the invention comprises 5% to 99.9% by weight, preferably 10% to 95% by weight, more preferably 10% to 90% by weight (for example 10% to 70%), even more preferably 20% to 80% by weight, particularly preferably 25% to 75% by weight, very particularly preferably 20% to 70% by weight and especially 20% by weight % to 60% urea (urea) and/or one or more of its derivatives.

The cleaning agent for milking equipment preferably comprises 10% to 80% by weight, preferably 10% to 70% by weight, more preferably 15% to 65% by weight.

The cleaning agent for vehicles preferably contains 10% to 80% by weight, preferably 10% to 70% by weight, more preferably 15% to 65% by weight.

The cleaning agents according to the invention can be used, for example, in closed systems. With suitable dosing of urea, it can also be used as an agent for cleaning, cleaning and/or disinfecting equipment in the food industry and medical technology.

In addition to urea, the compositions according to the invention may also comprise a surfactant or surfactants, such as, for example, anionic, nonionic, cationic and/or amphoteric surfactants. Likewise, any desired mixtures of all surfactants specified below are possible.

The cleaning agent according to the invention comprises up to 40% by weight (for example up to 10% by weight), preferably 0.01% to 40% by weight, more preferably 0.1% to 30% by weight, based on the total weight of the agent. %, even more preferably 0.5% to 30% by weight, very particularly preferably 1% to 30% by weight (eg 0.1% to 20% by weight) of one or more surfactants.

In general, anionic surfactants refer specifically to those surfactants that have a negatively charged functional group. Anionic surfactants typically have a polar and a non-polar moiety. A C ₆ -C ₃₀ alkyl group preferably serves as the non-polar moiety. The polar functional group is preferably -COO- (carboxylate), -SO ₃ ^- (sulfonate) or -O ^- SO ₃ ³ (sulfate).

The corresponding examples are:

Alkyl carboxylate of formula R-COO ^- Na ⁺ , R is an organic group with 6 to 30, preferably 8 to 16 carbon atoms;

Alkylbenzenesulfonate (ABS) of formula _CnH2n+1 ^-C6H4-SO3- _{Na + ,} ⁿ _is 6 to 30, preferably 8 to 16, (e.g. dodecylbenzenesulfonic acid sodium);

Secondary alkyl sulfonates (SAS) of formula _CnH2n+1 ^-SO3- _Na ⁺ , _n being 6 to 30, preferably 8 to 6; and

Fatty alcohol sulfates (FAS) of the formula H ₃ C-(CH ₂ ) _n -CH ₂ -O ^- SO ₃ -Na ⁺ , n being 6 to 30, preferably 8 to 16, (e.g. sodium lauryl sulfate).

Further examples of anionic surfactants are surfactants sold under the name Lutensit (manufacturer: BASF), such as eg Lutensit AS2230.

Suitable sulfonate-type surfactants here are preferably _C9-15 alkylbenzenesulfonates and olefin-sulfonates. Also suitable are alkylsulfonates obtained from _C12-20 alkanes, for example by chlorosulfonation or sulfoxidation, and subsequent hydrolysis or neutralization. Furthermore, esters of α-sulfo fatty acids (ester sulfonates), such as α-sulfonated methyl esters of fatty acids of hydrogenated coconut, palm kernel or tallow, are also suitable. A specific example is Ufaryl (eg Ufaryl DL90C), an alkylbenzene sulfonate.

Further suitable anionic surfactants are sulfonated fatty acid glycerides. Fatty acid glycerides are understood to mean monoesters, diesters and triesters as well as mixtures thereof. The sulfonated fatty acid glycerides preferred here are the sulfonation products of saturated fatty acids having 6 to 22 carbon atoms, for example caproic acid, caprylic acid, myristic acid, palmitic acid, stearic acid or behenic acid.

Another class of anionic surfactants is the class consisting of ether carboxylic acids obtainable by reaction of fatty alcohol ethoxylates with sodium chloroacetate in the presence of basic catalysts. Suitable anionic surfactants are additionally also partial esters of dihydroxyalkanes or polyhydroxyalkanes, mono- and disaccharides, polyethylene glycols with maleic anhydride and ethylenic adducts of at least monounsaturated carboxylic acids, which Monounsaturated carboxylic acids have a chain length of 10 to 25 carbon atoms and preferably have an acid number of 15 to 130. Alternatively usable anionic surfactants are sulfosuccinates, sulfosuccinamates and sulfo-succinamides, especially sulfosuccinates and sulfosuccinamates, very preferably Sulfo-succinate.

In a preferred embodiment, the cleaning agent according to the invention comprises 0.01% to 20% by weight, more preferably 0.1% to 10% by weight, even more preferably 0.5% to 5% by weight, based on the total weight of the agent. , particularly preferably 1 to 4, especially 1.5% to 3% by weight of nonionic surfactants.

Nonionic surfactants are conventionally designated as those surfactants which substantially contain no separable functional groups and therefore do not dissociate into ions in water. Like all surfactants, these nonionic surfactants consist of a nonpolar and a polar part. As the non-polar moiety, the nonionic surfactants preferably contain a fatty alcohol (eg C ₁₂ -C ₁₈ ) or eg an octyl or nonylphenol group. As the polar moiety, these nonionic surfactants preferably contain hydroxyl or ether groups.

Examples of nonionic surfactants are:

Polyalkylene glycol ethers;

Fatty alcohol ethoxylates (FAEO), especially fatty alcohol ethoxylates of the formula CH ₃ -(CH ₂ ) _10-16 -(OC ₂ H ₄ ) _1-25 -OH;

Fatty alcohol propoxylates (FAPO), especially fatty alcohol propoxylates of the formula CH ₃ -(CH ₂ ) _10-16 -(OC ₃ H ₆ ) _1-25 -OH-

Alkyl glycosides;

Alkyl polyglycosides (AFG), especially those of the formula CH ₃ -(CH ₂ ( _10-16 -(O-glycoside) _1-3 -OH;

Octylphenol ethoxylates, in particular of the formula C ₈ H ₁₇ -(C _6- H ₄ )-(OC ₂ H ₄ ) _1-25 -OH, and/or

Nonylphenol ethoxylates, especially nonylphenol ethoxylates of the _{formula C9H19-} ( _C6H4 ) _- ( _{OC2H4 ) 1-25} -OH.

Cationic surfactants are specified as those having a positively charged functional group. Preferably, they are quaternary ammonium compounds ^of the formula R _1a R _2a R _3a R _4a N ⁺ X-, R _1a to R _4a being an organic radical having 4 to 20 carbon atoms, preferably a stearoyl, palmitoyl, methyl, benzyl or butyl, and X is a counterion, preferably a halide.

Amphoteric surfactants are specifically those surfactants that have both a negatively charged functional group and a positively charged functional group. An alkyl group preferably serves as a non-polar moiety, a carboxylate group (R—COO ⁻ ) and a quaternary ammonium group preferably serve as a polar moiety.

Further preferred surfactants are nonionic low foaming or solid surfactants such as those sold under the trademarks Genapol (eg Genapol EP2584), Lutensol (eg Lutensol AT25) and Plurafac (eg Plurafac LF901) and belong to the group consisting of alkylpolyethylene Class consisting of glycol ethers or fatty alcohol ethoxylates.

In a preferred embodiment, the cleaning agent according to the invention comprises at most 20% by weight, preferably 0.01% to 20% by weight, more preferably 0.5% to 20% by weight, based on the total weight of the cleaning agent. %, even more preferably 0.5% to 15% by weight, particularly preferably 0.2% to 15% by weight of a complexing agent or complexing agents.

Complexing agents or complex formers are ligands that contain two or more binding sites. They are thus capable of forming particularly stable complexes with polyvalent metal ions. Examples of complexing agents are nitrilotriacetate (NTA), ethylenediaminetriacetate (TED), ethylenediaminetetraacetate (EDTA), methylglycine diacetate or its salt (MGDA) (preferably its trisodium salt, eg Trilon M), oxalate, maleate, tartrate and/or citrate; especially preferred are their sodium salts. Also in the case of using citrate/citric acid as electrolyte (and/or pH adjuster), it is preferred that the aforementioned complexing agent is present in the given amount.

Further examples of complexing agents are polyacrylic acid and its salts (e.g. SokalanPA30CL, a polyacrylic acid with low molecular weight, which is completely neutralized as a sodium salt) and the natural polysaccharide alginate and its salts, and polyacrylic acid Aspartate and its salts.

Most complexing agents of this type are often outlined together with other additives of the electrolyte type and the general wording is "synergist".

These are often water-soluble or water-insoluble substances, for example aluminosilicates and zeolites in particular can be used as builders.

Zeolites suitable as builders include, for example, zeolite A, zeolite X, zeolite Y and zeolite P.

Other suitable builders are, for example, polyacetals, which are obtainable by conversion of dialdehydes using polyol carboxylic acids, which preferably contain 5 to 7 C atoms and at least 3 hydroxyl groups. Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde and mixtures thereof and from polycarboxylic acids such as gluconic acid and/or glucoheptonic acid.

Further suitable organic builders are dextrins, which are carbohydrate oligomers or polymers which are obtainable by partial hydrolysis of starch. Furthermore, polyacrylates, pectates, alginates and polyaspartates can also be used as synergists, which are also considered "complexing agents" in the context of the present invention.

Alternatively, phosphate-based builders may also be employed. However, these builders are not preferred for environmental reasons. Examples are sodium tripolyphosphate, sodium pyrophosphate and sodium orthophosphate. Preferably, the cleaning agent is phosphate-free or contains only a small amount (eg up to 0.19% by weight) of phosphonate as a corrosion inhibitor.

The aforementioned complexing agents and the following electrolyte-type ingredients can be considered as suitable builders that maintain the cleaning efficacy observed with urea.

In a preferred embodiment, the cleaning agent according to the invention also comprises one or more stabilizers. Components that facilitate dissolution and/or dispersion typically act here as stabilizers. Preferably, polyols are used as stabilizers. Polyol refers to a substance containing two or more alcohol groups. Examples of suitable stabilizers are ethylene glycol, propylene glycol, polyalkylene glycols (especially polyethylene glycols such as ), polypropylene glycol), glycerin, sorbitol, mannitol or mixtures thereof.

The cleaning agent according to the invention may additionally comprise a stabilizer or stabilizers in an amount of from 0.01% to 20% by weight, preferably from 0.1% to 5% by weight, especially when it comes to liquid form of the cleaning agent according to the invention.

In a further preferred embodiment, the cleaning agent according to the invention can additionally contain one or more antibacterial and/or antimycotic and/or antimicrobial additives, ie in particular in the case of a liquid formulation.

This or these antibacterial and/or antimycotic and/or antimicrobial additives are customarily contained in an amount of from 0.01% to 5% by weight, preferably from 0.1% to 2% by weight. Preservatives approved in food chemistry are, for example, sodium formate, sodium sorbate or PHB esters. Furthermore, suitable additives with an antimicrobial range of action can be used.

The cleaning agents of the present invention may contain enzymes. These enzymes are typically present at most 10% by weight (e.g. 0.01% to 10% by weight), preferably at most 5% by weight (e.g. 0.01% to 5% by weight), based on the total weight of the cleaning agent, Especially 1% to 5% by weight), more preferably 0.1% to 3% by weight, especially 0.5% to 2.5% by weight.

Examples of suitable enzymes are proteases, lipases, amylases and cellulases. Specific examples are coated enzyme preparations commercially available in solid form, such as Savinase 6.0T, Lipolase 100T and Termamyl 120T.

Additional examples of enzymes include:

- Proteases such as 140 (Manufacturer: Henkel); 4.0T, 6.0T, 8.0T (Manufacturer: Novo).

- Amylases such as 60T, 90T, (Manufacturer: Novo); (Manufacturer: Solvay Enzymes); especially alpha-amylases such as ultra,

- lipase, such as 30T (Manufacturer: Novo).

In addition to the aforementioned components, the cleaning agents according to the invention may also contain one or more fragrances. A fragrance is a natural or synthetic substance that has an odor, preferably a pleasant one. Examples of spices are:

Ambrette Lactone, [α]-Amylcinnamaldehyde, Anethole, Anisaldehyde, Anisyl Alcohol, Anisole, Methyl Anthranilate, Acetophenone, Benzylacetone, Benzaldehyde, Ethyl Benzoate, Diphenyl Methanone, benzyl alcohol, borneol, bornyl acetate, [α]-bromostyrene, n-decyl aldehyde,

Dodecanal, Eugenol, Eugenol Methyl Ether, Eucalyptol, Farnesol, Fenchone, Fentyl Acetate, Geranyl Acetate, Geranyl Formate, Piperonal, Methyl Heptynylcarboxylate, Heptanal , hydroquinone dimethyl ether, hydroxycinnamaldehyde, hydroxycinnamyl alcohol, indole, iron, isoeugenol, isoeugenol methyl ether, isosafrole, jasmine, camphor, carvacrol, carvone, para Methyl cresyl ether, coumarin, p-methoxyacetophenone, methyl n-amyl ketone, methyl anthranilate, p-methylacetophenone, methyl piperonol, p-methylquinoline , methyl ss-naphthyl ketone, methyl n-nonyl acetaldehyde, methyl n-nonyl ketone, musk ketone, ss-naphthol ether, ss-naphthol methyl ether, nerol, nitrobenzene, n-nonyl Aldehydes, nonanol, n-octylaldehyde, p-hydroxyacetophenone, cyclopentadecanolide, ss-phenylethyl alcohol, phenylacetaldehyde dimethyl acetal, phenylacetic acid, menthol, sassafras, salicylic acid Isoamyl Ester, Methyl Salicylate, Hexyl Salicylate, Cyclohexyl Salicylate, Sandalyl Alcohol, Skatole, Terpineol, Thymene, Thymol, [γ]-Undecylactone, Vanillin, Veratraldehyde, Cinnamaldehyde, Cinnamyl Alcohol, Cinnamic Acid, Ethyl Cinnamate, Benzyl Cinnamate, Alkyl Isothiocyanate (Alkyl Mustard Oil), Diacetyl, Limonene, Linalool, Agarwood Acetate Esters and agaryl propionate, menthol, menthone, methyl-n-heptenone, phellandrene, phenylacetaldehyde, terpineyl acetate, citral and/or citronellal.

Likewise, ethereal oils such as angelica root oil, anise oil, arnica flower oil, basil oil, bay oil, yellow orchid oil, silver fir oil, spruce fir oil, elemi oil, eucalyptus oil, cumin oil , pine needle oil, geranium oil, geranium oil, ginger grass oil, guaiac wood oil, kuba balsam oil, helichrysum oil, linoleum oil, ginger oil, iris oil, melaleuca oil, calamus oil, chamomile Oil, Camphor Oil, Kanagawa Oil, Cardamom Oil, Cinnamon Oil, Pine Oil, [ι] Copaiba Balsam Oil, Coriander Oil, Spearmint Oil, Amaranth Oil, Cumin Oil, Lemongrass Oil, Hibiscus Seed Oil, Myrrh Oil, Clove Oil, Neroli Oil, Oligo Oil, Frankincense Oil, Oregano Oil, Palmarosa Oil, Patchouli Oil, Peru Balsam Oil, Orange Leaf Oil, Pepper Oil, Pimento Oil, Pine Oil, Rose Oil , Rosemary Oil, Sandalwood Oil, Celery Oil, Star Anise Oil, Thuja Oil, Thyme Oil, Verbena Oil, Vetiver Oil, Juniper Oil, Absinthe Oil, Wintergreen Oil, Ylang Ylang Oil, Hyssop Oil, Cinnamon Oil , cinnamon leaf oil and/or cypress oil.

Particularly preferably, limonene and/or orangeterpene are used as fragrances.

Perfume is customarily employed in an amount of from 0.01% to 3% by weight, preferably from 0.01% to 2% by weight, based on the total weight of the cleaning agent. Combinations of two or more (eg, 2 to 10) spices are employed, if desired.

In addition to fragrance, the cleaning agent according to the invention may also contain colorants (eg kiwifruit green or TAED green).

If the cleaning agent of the present invention is in liquid form, it may contain water and/or one or more non-aqueous solvents.

Suitable non-aqueous solvents are derived, for example, from the group consisting of one or more alcohols, alkanolamines or glycol ethers, provided they are miscible with water. Preferably, these solvents are selected from ethanol, n- or isopropanol, butanol, ethylene glycol, propylene or butylene glycol, glycerol, diethylene glycol, propyl or butyl diglycol, hexanediol, ethylene glycol, Alcohol 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 or propylene glycol propyl ether, dipropylene glycol mono Methyl ether or ethyl ether, diisopropylene glycol monomethyl ether or ethyl ether, methoxy triethylene glycol, ethoxy triethylene glycol or butoxy triethylene glycol, 1-butoxyethoxy-2-propanol, 3 - Methyl-3-methoxybutanol, propylene glycol tert-butyl ether and mixtures of these solvents.

In a further preferred embodiment, it is a solid cleaning agent in the form of granules or in the form of compressed tablets or tablets.

The cleaning agent according to the invention comprises 0.1% to 90% by weight, more preferably 1% to 70% by weight (eg 5% to 70% by weight), based on the total weight of the cleaning agent, even more preferably 5% to 60% electrolyte by weight.

Salts such as sodium sulfate or sodium chloride affect physicochemical parameters such as ionic strength, which can be beneficial for cleaning activity and for the ability to break intermolecular and intramolecular hydrogen bonds (eg in proteins and carbohydrates) of.

Preferably, these electrolytes are alkali metal salts and/or alkaline earth metal salts, more preferably alkali metal salts, especially sodium salts. Examples are sodium sulfate or chloride, sodium bicarbonate, sodium carbonate, trisodium citrate, sodium phosphate, sodium phosphonate, sodium acetate, sodium alginate, sodium maleate, and the like. Depending on the complexing and/or pH adjusting capacity of the anions, trisodium citrate and sodium carbonate are additionally preferably used for pH setting or for pH adjusting buffer systems (e.g. citric acid/sodium hydroxide and/or sodium carbonate/bicarbonate sodium). Therefore, in a preferred embodiment, at least a part of the electrolyte may be a substance or substances capable of adjusting pH (pH regulator).

In different application cases, especially in milking equipment etc., it is preferred if the cleaning agent according to the invention has a pH of 7 to 12, in particular 8 to 11, then an acidic and an alkaline treatment occur alternately. The setting of the desired acidic pH is described below. In general, for this technique the following is carried out: The cleaning agents available on the market for the dairy industry (in particular milking equipment, here in particular pipes and milking units) belong to two groups: alkaline and acidic Cleaning agents, they should be used interchangeably. The alkalinity (usually caustic potash or caustic soda) will free e.g. milk pipes of organic (fat and protein based) deposits, especially milk dregs. Acidic components (eg, phosphoric acid, peracetic acid) supply the chemical energy of the cleaning agent to substantially remove mineral-based deposits, especially calcareous deposits. For specific applications, they can also be supplemented by chlorine- or oxygen-based additives with a sanitizing effect.

The pH regulator here is preferably an alkaline agent. Preferably, the basic agent is present in the form of an alkali-active alkali metal and/or alkaline earth metal salt and/or in the form of an alkali metal and/or alkaline earth metal hydroxide. As alkali metal, sodium is preferred in these compounds. Particularly preferred is the case where the alkaline-active cleaning agent comprises a mixture of sodium bicarbonate and sodium carbonate. Particularly advantageous results are achieved if the mixture of sodium carbonate and sodium bicarbonate is composed such that approximately 2 to 4, in particular approximately 2.8 to 3.3 parts by weight of sodium bicarbonate are distributed to one part by weight of sodium carbonate. If such mixtures are used, an advantageous pH range of about 8 to 11, in particular about 9 to 10, is also set.

Preferably, in order to dissolve calcareous deposits, in particular milking equipment ( see above), an acidic pH of 1 to 6, especially 2 to 4, is to be set.

The pH regulator here is preferably an acidifying agent. Preferably, inorganic and organic water-soluble free acids, their anhydrides or their acid salts are used. In addition to sodium and potassium hydrogensulfate and/or urea phosphate, in particular organic α-hydroxycarboxylic acids (fruit acids) such as, for example, citric acid, tartaric acid, etc., and/or their anhydrides can advantageously be used. These are preferably used in admixture with sulfamic acid (eg citric acid and sulfamic acid in a 3:1 ratio).

Likewise, it is possible that an increase in the viscosity of the cleaning agents according to the invention is desirable. For example, the cleaning agent according to the invention may be present in the form of a gel. In this case, water or an organic liquid (eg alcohol) is used as a filler, in which, however, a thickener is additionally added.

The viscosity of the cleaning agent according to the invention can be determined using customary standard methods (eg Brookfield viscometer RVD-VII at 20 rpm and 20° C., spindle 3). Preferred liquids for gel-like cleaners may have a viscosity of 20 to 4000 mPa, with values between 40 and 2000 mPa being preferred.

Suitable thickeners are inorganic or polymeric organic compounds. Mixtures of thickeners may also be used.

Included among the inorganic thickeners are, for example, polysilicic acids, clay minerals, such as montmorillonites, zeolites, silicic acids (eg Sipernat, eg Sipernat 50S), phyllosilicates and bentonites. Organic thickeners are derived from the group consisting of natural polymers, modified natural polymers and fully synthetic polymers. Polymers of natural origin used as thickeners are, for example, xanthan gum, agar, carrageenan, tragacanth, gum arabic, alginates, pectin, polysaccharides, guar gum, gellan gum, carob Glues, starches, dextrins, gelatin and casein.

Modified natural substances originate in particular from the group consisting of modified starches and celluloses; mention may be made here of, for example, carboxymethylcellulose, hydroxyethyl-cellulose and hydroxypropylcellulose as well as methylhydroxy Ethyl cellulose.

If the cleaning agent is present in the form of solid particles, the volume average particle size (D50) is preferably 50 to 800 μm, more preferably 100 to 600 μm, especially 150 to 450 μm. The particle size is determined here as described above. Likewise, it is preferred that the cleaning agent according to the invention in particulate form has a “Hausner factor” of 1.03 to 1.3, more preferably 1.04 to 1.20 and in particular 1.04 to 1.15. "Hausner coefficient" is understood here to mean the ratio of compacted or packed density to bulk density. A suitable particle size and a suitable Hausner coefficient lead, for example, to a favorable dissolution behavior and correspondingly to a better cleaning result. (Information on the "Hausner coefficient" can be found, for example, in "Arzneiformenlehre II, Arbeitsanleitungzum Praktikum; Pharmazeutische Technologie", Eberhard Karls University, Tübingen, Germany, University of Tübingen, Germany).

The above details indicate possible components of the cleaning agent according to the invention. The individual components can be used in essentially any desired combination in the stated quantitative ratios and on a broad basis for the development of effective cleaning agents. Preferred ranges for one component can especially preferably be combined with preferred ranges for another component.

According to the invention, the use of urea (urea) alone (100%) exhibits a surprisingly good cleaning power and a surprisingly good shine of glasses and tableware.

The cleaning efficacy of urea is significantly increased by the addition of electrolytes. It is especially advantageous to use neutral salts such as sodium sulfate and/or sodium chloride or to use trisodium citrate and/or to use an alkaline buffer mixture consisting of sodium carbonate and sodium bicarbonate.

The addition of surfactants increases the cleaning activity, especially for enhanced fat and oil removal.

Adding eg 1% to 2% of an enzyme (especially an enzyme with a high hydrolase activity at pH 8 to 10 and at 40°C to 50°C) further improves the cleaning power. Commercially available enzymes (manufacturer: NOVOZYMES) are enzyme preparations with amylase, lipase and protease activities bound to a carrier, especially in alkaline cleaning of milking equipment ( see above).

The cleaning agents according to the invention may contain bleaching agents. Preferably, the cleaning agents contain up to 5% by weight of a bleaching agent, such as an oxygen-based bleaching agent such as sodium persulphate or sodium percarbonate. The cleaning agents described herein may preferably contain 0.01% to 5% by weight of bleach, more preferably 0.01% to 2% by weight, especially 0.01% to 1% by weight of bleach.

In addition, the cleaning agents described in the present invention may contain a disinfectant. Cleaning agents according to the invention, in particular cleaning agents for milking equipment, may contain up to 5% by weight of disinfectants, for example disinfectants such as sodium persulfate or sodium percarbonate. Preferably, the cleaning agents described herein may comprise from 0.01% to 5% by weight of bleach, more preferably from 0.01% to 2% by weight, especially from 0.01% to 1% by weight of bleach.

As mentioned above, the cleaning agents according to the invention can be used in the form of solutions, powders, concentrates, granules, pellets or gels. Solutions or gels can be used as such; powders, concentrates, pellets and gels can be dissolved or diluted with water, either manually or using suitable metering or mixing devices. In individual cases, use in sachets is particularly advantageous.

It is particularly preferred that the cleaning agent is provided in the form of powder, concentrate, granules or pellets, since its/their transportation is extremely economical. The gel may be provided in any desired container, especially in a cartridge or a set of two or more cartridges. Thus, it is possible to provide a set of two filter cartridges, one filter cartridge containing a gel of an acidic cleaner according to the invention and the other filter cartridge containing a gel of an alkaline cleaner according to the invention, both filter cartridges optionally contain additional ingredients. Furthermore, the urea cleaning agent can consist of a kit or a composition in which the specific components are specifically matched.

A preferred cleaner, especially an alkaline cleaner for cleaning surfaces, comprises the following components:

Urea is 10%-70% by weight;

Up to 10% by weight of nonionic surfactants (eg 0.1% to 10% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(such as trisodium citrate), TrilonM and/or

SokalanCP5) 1%-30% by weight;

Protease up to 5% by weight;

Lipase up to 5% by weight;

Amylase up to 5% by weight;

Corrosion inhibitors up to 5% by weight;

(eg phosphonates such as eg BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Spices up to 5% by weight;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(especially based on oxygen) silicon dioxide (e.g. silicic acid) up to 5% by weight, and

Anionic surfactants up to 5% by weight.

Another preferred cleaner, especially an alkaline cleaner for cleaning surfaces, comprises the following components:

Urea is 10%-70% by weight;

up to 10% by weight of one or more surfactants (eg 0.1% to 10% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(e.g. trisodium citrate),

TrilonM and/or SokalanCP5) 1%-30% by weight;

Up to 5% by weight of one or more enzymes;

Corrosion inhibitors up to 5% by weight;

(e.g. phosphonates such as BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Spices up to 5% by weight;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(especially based on oxygen)

Silica (eg silicic acid) up to 5% by weight.

Another preferred cleaner, especially an alkaline cleaner for cleaning surfaces, comprises the following components:

Urea is 10%-70% by weight;

up to 10% by weight of one or more surfactants (eg 0.1% to 10% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(such as trisodium citrate), TrilonM and/or SokalanCP5) 1%-30% by weight;

Protease up to 5% by weight;

Lipase up to 5% by weight;

Amylase up to 5% by weight;

Corrosion inhibitors up to 5% by weight;

(e.g. phosphonates such as BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Spices up to 5% by weight;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(especially based on oxygen)

Silica (eg silicic acid) up to 5% by weight.

Milk is a very important component of human nutrition and can be used as the basis for a large variety of products. If automatic milking is used, the milking equipment and equipment and especially the hoses and pipes in said equipment and equipment must be thoroughly cleaned. This is traditionally done by alternating cleaning agents containing strongly acidic ingredients such as phosphoric acid or peracetic acid and strongly basic compounds such as sodium hydroxide or potassium hydroxide. Peracetic acid is classified as corrosive and has a pungent odor. Also, to remove all types of bacteria, chlorine or oxygen based sanitizers must be used. Said systems are largely aggressive and must be handled and transported carefully by experienced personnel. In addition, they are largely corrosive and their repeated use may corrode the seals and connections of milking equipment and transport vessels, thereby shortening the life of the equipment. After the initial cleaning steps, equipment, hoses, pipes and utensils must be thoroughly rinsed to avoid contamination of the milk with aggressive and dangerous chemicals. In addition, discarded cleaning fluids are largely harmful to the environment, especially if they are not disposed of according to regulations.

It is therefore also an object of the present invention to provide a cleaning agent which avoids the above-mentioned disadvantages, in particular avoiding the use of highly aggressive chemicals, and which is also environmentally acceptable and does not require a large amount of cleaning fluid to be discharged. And expensive to dispose of, plus it's biodegradable.

The cleaning agent according to the invention is based on urea, which is completely biodegradable and completely environmentally acceptable. In addition, milking equipment and containers will not be corroded by this cleaning agent.

A cleaning agent according to all embodiments of the invention, especially for cleaning milking equipment and equipment, may contain acidic components. Another cleaning agent according to all embodiments of the present invention, especially for cleaning milking equipment and equipment, may contain alkaline components. These cleaning agents can be used in an alternating manner. When cleaning milking gear and equipment, acidic cleaners will remove mineral and casein plastics, while alkaline cleaners will remove fatty and oily deposits.

The cleaning agent(s) according to the invention may be provided in any desired package and quantity in all embodiments of the invention, however preferably provided in a package and/or in a quantity suitable for a particular purpose This or these cleaners. Thus, a kit of two filter cartridges may be provided, one containing an appropriate amount of acid gel for cleaning a milking system of a particular size or model; and the other containing an appropriate amount of Alkaline gel for cleaning the milking system.

In addition, the alkaline and/or the acidic cleaning agent, especially the alkaline cleaning agent, may contain one or more disinfectants, especially in combination with cleaning milking equipment (see above), but also with respect to The following specific examples.

A preferred cleaning agent, in particular an alkaline cleaning agent for cleaning milking equipment and milking equipment or hoses or pipes etc. of milking equipment or equipment, comprises the following components:

Urea is 10%-70% by weight;

Up to 5% by weight of nonionic surfactants (eg 0.1% to 5% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(such as trisodium citrate), TrilonM and/or SokalanCP5) 1%-30% by weight;

Protease up to 5% by weight;

Lipase up to 5% by weight;

Amylase up to 5% by weight;

Corrosion inhibitors up to 5% by weight;

(eg phosphonates such as eg BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Spices up to 5% by weight;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(or disinfectants, especially oxygen-based)

Silica (e.g. silicon up to 5% by weight and acids)

Anionic surfactants up to 5% by weight.

Another preferred cleaning agent, in particular an alkaline cleaning agent for cleaning milking equipment and milking equipment or hoses or pipes etc. of milking equipment and equipment, comprises the following components:

Urea is 10%-70% by weight;

up to 10% by weight of one or more surfactants (eg 0.1% to 10% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(such as trisodium citrate), TrilonM and/or SokalanCP5) 1%-30% by weight;

Up to 5% by weight of one or more enzymes;

Corrosion inhibitors up to 5% by weight;

(e.g. phosphonates such as BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Up to 5% by weight of spices;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(or disinfectants, especially oxygen-based)

Silica (eg silicic acid) up to 5% by weight.

Yet another preferred cleaning agent, in particular an alkaline cleaning agent for cleaning milking equipment or milking equipment or hoses or pipes etc. of milking equipment and equipment, comprises the following components:

Urea is 10%-70% by weight;

up to 10% by weight of one or more surfactants (eg 0.1% to 10% by weight);

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

complexing agent

(preferably citrate

(such as trisodium citrate), TrilonM and/or SokalanCP5) 1%-30% by weight;

Protease up to 5% by weight;

Lipase up to 5% by weight;

Amylase up to 5% by weight;

Corrosion inhibitors up to 5% by weight;

(e.g. phosphonates such as BayhibitS)

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

(e.g. polycarboxylates such as SokalanCP5)

Spices up to 5% by weight;

Bleaching agents up to 5% by weight (eg 0.01% to 5% by weight);

(or disinfectants, especially oxygen-based)

Silica (eg silicic acid) up to 5% by weight.

Another preferred cleaning agent, in particular an acidic cleaning agent for cleaning milking equipment or milking equipment or hoses or pipes etc. of milking equipment or equipment, comprises the following components:

Urea is 10%-80% by weight;

Sulfamic acid 1%-10% by weight;

Citric acid (preferably anhydrous) 1%-20% by weight;

Sodium sulfate (preferably anhydrous) 0%-50% by weight;

Sodium citrate is 0%-50% by weight;

Anionic surfactants up to 5% by weight;

Nonionic surfactants up to 5% by weight;

Complexing agents (such as MGDA) up to 5% by weight;

Silica (e.g. silicic acid) up to 5% by weight;

Bleaching agents up to 1% by weight (e.g. 0.01% to 1% by weight) and (or disinfectants, especially based on oxygen, e.g. sodium persulfate)

Fragrance up to 5% by weight.

Optionally, this cleaning agent may additionally contain the following components:

Scale inhibitors (eg Sokalan) up to 5% by weight;

Corrosion inhibitors (eg Bayhibit) up to 5% by weight.

All cleaning agents already mentioned in this application as cleaning agents for cleaning milking equipment or milking equipment or hoses or pipes etc. of milking equipment or equipment can also be used for cleaning any The desired type of equipment, such as a bottling unit for liquids or semi-liquids (especially beverages such as juices).

Accordingly, the invention also provides such a cleaning agent for use in bottling plants or installations, especially for fruit juices.

According to the invention there is also provided a cleaning agent which is used for cleaning any desired surface type, such as interior surfaces not covered by installations, exterior surfaces, balconies, facades, tunnel walls, road signs, stringers, noise barriers, etc. . If the protection and maintenance of surfaces is also of importance, contamination of inner surfaces is primarily a hygiene problem. Common indoor dust may contain organic components such as bacteria, pollen, spores, etc. In addition, the exterior surface can be contaminated with algae, lichens, mosses, plant seeds, pollen, dust and soil (especially soil containing silicates), which must be cleaned to protect and maintain them.

There are a large number of cleaning agents, which are commercially available and which, depending on their intended use, contain acidic or basic components, many of which cannot be regarded as environmentally friendly. If the outer surfaces are to be cleaned, care must additionally be taken that no vegetation etc. is damaged by the cleaning agent, which as mentioned above may be largely alkaline or acidic. In addition, the discharged cleaning fluids are largely harmful to the environment, especially if they are not disposed of according to regulations. Thus, there is yet another problem associated with the environmentally friendly disposal of used cleaning fluid.

Cleaning agents for stone surfaces or building facades are used when stone or ceramics are to be cleaned (eg tunnels, train or underground railway tunnels, tiles on the exterior surfaces of buildings). The cleaning agent must generally be suitable for use in high pressure or steam cleaning equipment. In addition, these cleaning agents should not have any unpleasant odor and should be fireproof.

All these objectives are achieved and all these disadvantages are overcome by a surface cleaner according to the invention. The cleaning agent can be adapted to its specific purpose, ie to the specific surface to be treated. Therefore, if acid-sensitive surfaces (e.g. surfaces containing limestone) are to be cleaned, eg neutral or (slightly) alkaline cleaning agents can be used. If alkali-sensitive surfaces are to be cleaned, a neutral or (slightly) acidic cleaner can be used. Additionally, vegetation, etc. covering these surfaces can be removed using an acidic cleaner.

Exterior surfaces of buildings to be cleaned (such as bricks, concrete, aggregate concrete, plaster, sandstone, natural stone, tiles, marble, etc.) are often contaminated with algae and fungi.

Depending on the nature of the surface to be cleaned, the urea cleaning agent can consist of a kit or a composition in which the specific components are specifically adapted. It is of course preferred to provide a cleaning agent which can be sprayed onto the object or surface to be cleaned.

In addition, the cleaning agent of the present invention can be used to clean the surface of solar panels or photovoltaic panels. The panels - contrary to popular belief - are not washed by rainwater, but must be washed regularly to maintain their efficacy. These boards can become contaminated with algae, lichens, mosses, plant seeds, pollen, dust and soil (especially soil containing silicates).

Another preferred cleaning agent, especially an acidic cleaning agent for cleaning surfaces, comprises the following components:

Urea is 10%-80% by weight;

Sulfamic acid 1%-10% by weight;

Citric acid (preferably anhydrous) 1%-20% by weight;

Sodium sulfate (preferably anhydrous) 0%-50% by weight;

Sodium citrate is 0%-50% by weight;

Anionic surfactants up to 5% by weight;

Nonionic surfactants up to 5% by weight;

Complexing agents (such as MGDA) up to 5% by weight;

Silica (e.g. silicic acid) up to 5% by weight;

Bleach up to 1% by weight

(especially based on oxygen, (eg 0.01% to 1% by weight) and eg sodium persulfate)

Fragrance up to 5% by weight.

This cleaning agent may optionally additionally contain the following components:

Scale inhibitors (eg Sokalan) up to 5% by weight;

Corrosion inhibitors (eg Bayhibit) up to 5% by weight.

According to the invention there is also provided one or more cleaning agents which can be used for cleaning any desired type of vehicle, such as motor vehicles, trains, airplanes and boats, especially for the outer surfaces of vehicles. The cleaning agent(s) can be used in automatic or semi-automatic washing device systems.

Vehicle soil (pollution) often includes road dust, dust in general (such as silicate-containing soils), and organic matter such as insects, algae, lichens, mosses, plant seeds, pollen, and (especially in Europe) asphalt.

Due to the complex and demanding cleaning of vehicles, common cleaning agents often contain cleaning agents based on sodium hydroxide at pH 14. In addition, the cleaning agents often contain NTA (nitrilotriacetic acid) and/or EDTA (ethylenediaminetetraacetic acid), which should be avoided for environmental reasons. However, an acidic cleaner should not be used as it can cause corrosion of metal surfaces etc.

Cleaning is customary using the following steps: removal of (parts of) insects, removal of iron (especially framing or edges), and removal of residual dirt and dust.

There is yet another problem associated with environmentally friendly disposal of used cleaning fluid.

The present invention provides a cleaning agent which overcomes the above-mentioned problems of the prior art. The cleaning agent is urea based. Depending on the object to be cleaned, the urea cleaning agent can consist, for example, of a kit or a composition, optionally comprising additional components, the specific components being specifically adapted. It is of course preferred to provide a cleaning agent/system which can be sprayed onto the object to be cleaned or onto the surface to be cleaned.

A preferred detergent, especially for washing vehicles such as cars, comprises the following ingredients:

Urea is 10%-70% by weight;

Up to 15% by weight of one or more surfactants (for example 0.1% to 15% by weight);

Sodium carbonate up to 25% by weight (e.g. 0.1% to 25% by weight);

Sodium bicarbonate up to 50% by weight (eg 0.1% to 50% by weight);

complexing agent

(preferably citrate

(such as trisodium citrate), MGDA or its sodium salt

(e.g. TrilonM and/or polycarboxylates such as Sokalan CP5) up to 25% by weight (e.g. 0.1% to 25% by weight);

Fragrances up to 1% by weight (eg 0.001% to 1% by weight);

Silica (eg silicic acid) up to 1% by weight (eg 0.001% to 1% by weight) and gelling agent up to 1% by weight (eg 0.001% to 1% by weight).

Another preferred cleaning agent, especially for cleaning vehicles (such as cars), comprises the following components:

Urea is 10%-70% by weight;

Up to 15% by weight of one or more surfactants (eg 0.1% to 15% by weight);

Sodium carbonate up to 25% by weight (e.g. 0.1% to 25% by weight);

Sodium bicarbonate up to 50% by weight (eg 0.1% to 50% by weight);

Citrates (e.g. trisodium citrate) up to 25% by weight (e.g. 0.1% to 25% by weight);

Up to 1% by weight (eg 0.01% to 1% by weight) of one or more phosphonates;

up to 5% by weight (eg 0.01% to 5% by weight) of one or more polycarboxylates;

Complexing agents (eg MGDA) up to 5% by weight (eg 0.01% to 5% by weight);

Up to 1% by weight of one or more fragrances (eg 0.001% to 1% by weight);

Silica (e.g. silicic acid) up to 1% by weight (e.g. 0.001% to 1% by weight), and

The gelling agent is up to 1% by weight (eg, 0.001% to 1% by weight).

Yet another preferred cleaning agent, especially for cleaning vehicles such as cars, comprises the following components:

Urea is 10%-70% by weight;

Up to 15% by weight of one or more surfactants (eg 0.1% to 15% by weight);

Sodium carbonate up to 25% by weight (e.g. 0.1% to 25% by weight);

Sodium bicarbonate up to 50% by weight (eg 0.1% to 50% by weight);

Citrates (e.g. trisodium citrate) up to 25% by weight (e.g. 0.1% to 25% by weight);

Up to 1% by weight (eg 0.01% to 1% by weight) of one or more phosphonates;

up to 5% by weight (eg 0.01% to 5% by weight) of one or more polycarboxylates;

MGDA up to 5% by weight (eg 0.01% to 5% by weight);

Up to 1% by weight of one or more fragrances (eg 0.001% to 1% by weight);

Silica (eg silicic acid) up to 1% by weight (eg 0.001% to 1% by weight).

Another preferred cleaning agent, especially for cleaning vehicles (such as cars), comprises the following components:

Urea is 10%-70% by weight;

Up to 5% by weight of nonionic surfactants (eg 0.1% to 5% by weight);

Amphoteric surfactants up to 15% by weight (eg 0.1% to 15% by weight);

Anionic surfactants up to 10% by weight (eg 0.1% to 10% by weight);

Sodium carbonate up to 25% by weight (e.g. 0.1% to 25% by weight);

Sodium bicarbonate up to 50% by weight (eg 0.1% to 50% by weight);

Citrates (e.g. trisodium citrate) up to 25% by weight (e.g. 0.1% to 25% by weight);

Phosphonates up to 1% by weight (e.g. 0.01% to 1% by weight);

Polycarboxylates up to 5% by weight (eg 0.01% to 5% by weight);

MGDA up to 5% by weight (eg 0.01% to 5% by weight);

Fragrances up to 1% by weight (eg 0.001% to 1% by weight);

Silica (eg silicic acid) up to 1% by weight (eg 0.001% to 1% by weight).

Such cleaning agents may optionally comprise up to 1% by weight (eg 0.001% to 1% by weight) of one or more gelling agents.

In more recent studies, cleaning agents for dentures and dentures were found to be unsatisfactory as far as their cleaning and disinfection action is concerned.

It is therefore another object of the present invention to provide a cleanser for dentures and dentures which is at least as good or better than prior art cleansers and which is environmentally acceptable. compatible.

This object is achieved according to the invention by providing a urea-based cleaning agent for dentures and dentures.

It is particularly preferred to provide the cleaning agent in the form of powder, concentrate, granules or pellets, since it is extremely economical to transport. The gel may be provided in any suitable container, especially in a cartridge.

The cleaning agent(s) according to the invention may be provided in any desired packaging and quantity, however it is preferred that the cleaning agent(s) be provided in a packaging and/or in a quantity suitable for a particular purpose.

Additionally, the cleaning agent may contain one or more disinfectants.

Depending on its use, the urea cleaning agent can consist of a kit or a composition in which specific (additional) components are specifically adapted.

Another preferred cleaning agent, especially for cleaning dentures, contains the following components:

Urea is 40%-80% by weight;

Bleaching agents up to 20% by weight (eg 0.1% to 20% by weight);

(especially oxygen-based, e.g. sodium percarbonate)

Sodium bicarbonate 1% to 25% by weight;

Sodium sulfate up to 20% by weight (eg 0.1% to 20% by weight);

Complexing agent up to 10% by weight (for example 0.1% to 10% by weight);

(especially citrates such as trisodium citrate)

Polyols (such as sorbitol or xylitol) up to 5% by weight (eg 0.1% to 5% by weight);

Citric acid (preferably 1%-10% by weight; anhydrous)

Anionic surfactants up to 5% by weight (eg 0.1% to 5% by weight);

Activator (eg TAED) up to 5% by weight (eg 0.1% to 5% by weight).

Another preferred cleaning agent, especially for cleaning dentures, contains the following components:

Urea is 40%-80% by weight;

Citric acid 1%-25% by weight;

(preferably anhydrous)

Sodium bicarbonate is 1%-20% by weight;

Anionic surfactants up to 5% by weight (eg 0.1% to 5% by weight);

Complexing agent up to 10% by weight (for example 0.1% to 10% by weight);

Sodium sulfate up to 10% by weight (eg 0.1% to 20% by weight);

Polyol (eg sorbitol or xylitol) up to 5% by weight (eg 0.1% to 5% by weight).

In particular, the milking equipment is cleaned, preferably alternately, with two (at least one alkaline and at least one acidic) cleaning agents.

The invention also relates to an enzymatic cleaning agent for closed systems, in particular an enzymatic cleaning agent for cleaning, sanitizing and/or sterilizing, based on an enzymatic cleaning agent for closed systems, enzyme-free dishwashing The total weight of a machine cleaner or an enzyme-free sanitation cleaner, comprising 5% to 99.9% by weight, preferably 10% to 95% by weight, more preferably 10% to 90% by weight, even more preferably 20% to 80% by weight, particularly preferably 25% to 75% by weight, very particularly preferably 20% to 70% by weight, and especially 20% to 60% by weight of urea or it Derivatives.

Overall, it should be noted that the cleaning agent according to the invention is a versatile resource for numerous application purposes due to its unexpectedly advantageous properties. The cleaning agent according to the invention has an excellent dissolving power and multi-substance containing power. The main components of the cleaning agent according to the invention in the form of neutral, toxicologically harmless natural substances are very highly skin-compatible and rapidly biodegradable. Urea has been found to be a surprisingly good solubilizer, especially in cleaning agents for closed systems (especially in cleaning agents for cleaning, disinfection and/or sterilization). Despite the high amount of urea, the cleaning agents according to the invention are surprisingly compatible with the surfaces to be cleaned, such as dishes, especially glass. No undue etching effect was noticed on these surfaces at all.

Based on the toxicologically and ecologically broadly acceptable urea, the combination with the additionally mentioned biologically likewise acceptable additives also allows, for example, formulations with the claimed "biological cleaners".

The present invention will be illustrated based on the following examples.

Example:

(All values in these examples are expressed in % by weight. Trade names or trade names used have the meanings clear from Annex I below.)

Cleaning agents used in food processing (e.g. in bottling facilities)

Urea 45.0

GenapolEP25842.0

Lutensol AT251.0

Sodium Carbonate 14.5

Sodium bicarbonate 20.96

Trisodium citrate 9.0

Savinase6.0T0.5

Lipolase100T0.4

Termamyl120T1.6

BayhibitS0.34

TAED Green 0.8

Sokalan CT51.0

TrilonM particles 2.5

Lemon oil 0.01

Sodium persulfate 0.09

Sipernat50S0.2

Lutensit AS22300.1

Acid cleaners for milking equipment:

Urea 47.91

Sulfamic acid 5.0

Anhydrous citric acid 14.0

Anhydrous sodium sulfate 30.0

PlurafacLF4310.8

Lutensol AT251.0

Trilon M1.0

Sipernat50S0.2

Sodium persulfate 0.09

Alkaline cleaners for surfaces

Urea 45.0

GenapolEP25842.0

Lutensol AT253.0

Sodium Carbonate 14.5

Sodium bicarbonate 17.96

Trisodium citrate 9.0

Savinase6.0T0.5

Lipolase100T0.4

Termamyl120T1.6

BayhibitS0.34

TAED Green 0.8

Sokalan CP51.0

TrilonM particles 2.5

Lemon oil 0.01

Sodium persulfate 0.09

Sipernat50S0.2

Lutensit AS22300.1

Acid cleaners for surfaces

Urea 47.71

Sulfamic acid 5.0

Anhydrous citric acid 14.0

Anhydrous sodium sulfate 30.0

PlurafacLF431(403)0.8

Lutensol AT251.0

Trilon M1.0

Sipernat50S0.4

Sodium persulfate 0.09

Detergents for cleaning cars

Urea 45.0

GenapolEP25841.0

Lutensol AT253.5

Amphoteric Surfactant 4.0

Anionic Surfactant 3.0

Sodium Carbonate 14.5

Sodium bicarbonate 16.55

Trisodium citrate 9.0

Bayhibit S0.19

Sokalan CP50.50

TrilonM particles 2.5

Aroma Oil, Lemon 0.01

Sipernat50S0.2

gelling agents, such as

Carbopol940, TyloseC1000P,

Tylose M20000.05

Considering the above examples with regard to preferred features, the invention additionally gives the following basic formulations:

1. A cleaning agent for cleaning vehicles, comprising the following components:

Urea is 10%-70% by weight;

0.1% to 15% by weight of one or more surfactants;

Sodium carbonate is 0.1%-25% by weight;

Sodium bicarbonate 0.1%-50% by weight;

Citrate 0.1% to 25% by weight;

Up to 1% by weight of one or more phosphonates;

Up to 5% by weight of one or more polycarboxylates;

MGDA up to 5% by weight;

Up to 1% by weight of one or more fragrances, and

Silica up to 1% by weight

2. Cleaning agents for cleaning surfaces, comprising these components:

Urea is 10%-80% by weight;

Sulfamic acid

(Decalcifying agent) 1%-10% by weight;

Citric acid (calcification agent) 1%-20% by weight;

Sodium sulfate is 0%-50% by weight;

Sodium citrate is 0%-50% by weight;

Anionic surfactants up to 5% by weight;

Nonionic surfactants up to 5% by weight;

Complexing agent up to 5% by weight;

Silica up to 5% by weight;

Bleach up to 1% by weight, and

Fragrance up to 5% by weight.

3. Cleaning agents for cleaning surfaces, comprising the following components:

Urea is 10%-70% by weight;

Up to 10% by weight of one or more surfactants;

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

Complexing agent 1%-30% by weight;

Up to 5% by weight of one or more enzymes;

Corrosion inhibitors up to 5% by weight;

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

Spices up to 5% by weight;

Bleaching agents up to 5% by weight;

Silica up to 5% by weight.

4. Cleaning agent for cleaning milking equipment, containing the following components:

Urea is 10%-80% by weight;

Sulfamic acid 1%-10% by weight;

Citric acid 1%-20% by weight;

Sodium sulfate is 0%-50% by weight;

Sodium citrate 0-50% by weight;

Anionic surfactants up to 5% by weight;

Nonionic surfactants up to 5% by weight;

Complexing agent up to 5% by weight;

Silica up to 5% by weight;

Bleach up to 1% by weight, and

Fragrance up to 5% by weight.

5. Cleaning agent for cleaning milking equipment, containing the following components:

Urea is 10%-70% by weight;

up to 10% by weight of one or more surfactants,

Sodium carbonate is 1%-25% by weight;

Sodium bicarbonate is 1%-50% by weight;

Complexing agent 1%-30% by weight;

Up to 5% by weight of one or more enzymes;

Corrosion inhibitors up to 5% by weight;

Colorants up to 5% by weight;

Scale inhibitors up to 5% by weight;

Spices up to 5% by weight;

Bleaching agents up to 5% by weight;

Silica up to 5% by weight.

6. A cleaning agent for cleaning dentures, comprising the following components:

Urea is 40%-80% by weight;

Citric acid 1%-25% by weight;

Sodium bicarbonate is 1%-20% by weight;

Anionic surfactants up to 5% by weight;

Complexing agent up to 10% by weight;

Sodium sulfate up to 10% by weight;

Polyols (such as sorbitol or xylitol) up to 5% by weight.

Annex I

Brand name or trade name used with chemical description

Claims (22)

1. The use of cleaning agents for closed systems, the cleaning agents include (a) 10% to 60% by weight urea, (b) 5% to 70% by weight of one or more electrolytes, (c) 0.1% to 35% by weight of one or more surfactants, (d) 0.01% to 20% by weight of one or more complexing agents, and (e) 0.01% to 10% by weight of one or more enzymes. 2. Use of the cleaning agent according to claim 1, characterized in that the cleaning agent is used as a dishwasher detergent. 3. The use of the cleaning agent according to claim 1 or 2, characterized in that the electrolyte exists in the form of alkali metal salts and/or alkaline earth metal salts. 4. The purposes of cleaning agent as claimed in claim 3, it is characterized in that this electrolyte exists in the form of sodium salt. 5. the purposes of cleaning agent as claimed in claim 1 or 2 is characterized in that this complexing agent is with nitrilotriacetate (NTA), ethylenediaminetriacetate (TED), ethylenediamine Exist in the form of tetraacetate (EDTA), methylglycine diacetate (MGDA), citrate. 6. The purposes of cleaning agent as claimed in claim 5, it is characterized in that the complexing agent exists in the form of sodium salt. 7. Use of a cleaning agent as claimed in claim 1 or 2, characterized in that enzymes for the degradation of organic matter are contained in an amount from 0.1% to 5% by weight. 8. Use of a cleaning agent as claimed in claim 7, characterized in that the amount of the enzyme is 0.3% to 3% by weight. 9. The use of the cleaning agent according to claim 1 or 2, characterized in that it is composed of particles. 10. Use of a cleaning agent as claimed in claim 9, characterized in that it consists of a powder. 11. Use of a cleaning agent according to claim 9, characterized in that it is as a compressed article or tablet or is filled into a sachet. 12. The use of the cleaning agent according to claim 1 or 2, characterized in that when used in an alkaline medium, it contains a bleaching agent. 13. Use of a cleaning agent according to claim 12, characterized in that the bleaching agent is a per compound. 14. Use of a cleaning agent as claimed in claim 13, characterized in that the per-compound is a persulfate and/or percarbonate. 15. Use of a cleaning agent as claimed in claim 14, characterized in that the per-compound is a sodium salt. 16. Use of a cleaning agent as claimed in claim 14, characterized in that the per-compound is present in an amount of 0.1% to 5% by weight. 17. Use of a cleaning agent as claimed in claim 14, characterized in that the per-compound is present in an amount of 0.1% to 3% by weight. 18. Use of a cleaning agent as claimed in claim 12, characterized in that in order to adjust the desired efficacy of the bleaching agent, a suitable activator is used. 19. Use of a cleaning agent according to claim 18, characterized in that the suitable activator is tetraacetylethylenediamine. 20. Use of a cleaning agent according to claim 1 or 2, characterized in that said cleaning agent is contained in a kit and in the kit is adjusted before use in the above claims 1 to 19 These framework conditions are specifically referred to. 21. Use of a cleaning agent according to claim 20, characterized in that the urea is spaced apart from the other components of the cleaning agent. 22. Use of cleaning agent according to claim 21, characterized in that said kit is a multi-chamber system.