Kit of parts for producing a wall and floor coating

Abstract

The invention relates to a kit of parts for producing a wall and floor coating, comprising a component A and a component B, wherein component A comprises at least one polyol and at least one catalyst, and component B comprises an aliphatic polyisocyanate having a viscosity, determined in each case at a temperature of 23°C and at a shear rate of 100 s-1, of 250 mPa·s to 1000 mPa·s. The invention further relates to a method for producing a wall and floor coating and to the use of a wall and floor coating as a bathroom coating.

Description

[0001]April 10, 2025 Kit of parts for producing a wall and floor coating. The present invention relates to a kit of parts for producing a wall and floor coating, a method for producing a wall and floor coating, a coating composition, and a wall and floor coating. Furthermore, the invention relates to the use of a wall and floor coating as a bathroom coating. Wall and floor coatings are widely used in the construction industry, in trades, and in the DIY sector. The coatings can be obtained from liquid or paste-like coating compositions, which, after curing, form an adhesive coating on the wall or floor.The resulting coatings generally serve more than just decorative purposes, but are often used to protect surfaces from wear and tear and environmental influences, to bond or bond objects / structures together, to secure objects, to fill joints, cavities, or cracks, to level surfaces, or to create specific surface textures. In these applications, the physical, mechanical, chemical, optical, and / or haptic properties of wall and floor coatings, as well as the processability, curing, durability, transportability, and / or health aspects of the underlying coating materials, play a crucial role. Furthermore, due to the limited availability of fossil resources, the use of coating materials made from sustainable raw materials is becoming increasingly important for the production of wall and floor coatings.Various wall and floor coatings and processes for their production are known from the state of the art. These include both single-component coating compounds and multi-component coating compounds used to produce a wall and floor coating. With multi-component coating compounds, the various components are usually stored separately and mixed together shortly before use to create the coating compound. Such multi-component coating compounds have become increasingly established in practice due to their wide range of applications and diverse design possibilities.A particular challenge with multi-component coating compounds, however, is obtaining a coating compound that consists to a high extent of natural or renewable raw materials, is easy to process, and simultaneously results in a wall and floor coating with distinct mechanical and physical properties and a wide range of visual design options. WO 2018 / 114991 A1 describes a polyurethane composition comprising a polyol component A and a polyisocyanate component B. The composition also contains at least one metallic pigment. To produce a floor coating, components A and B are mixed together and applied to the floor to be coated. Before drying, the applied coating compound is modeled, for example, with a rake.In practice, however, it has been shown that sanding the dried coating compound may be necessary to create a smooth surface before applying a sealing layer. WO 2006 / 024067 A1 describes a process for producing a polyurethane-coated surface, which comprises applying a coating composition containing a hydroxy-functional resin, a polyisocyanate, and a pigment. However, WO 2006 / 024067 A1 does not resolve the problem of achieving well-developed mechanical properties of the cured coating with simultaneously good processability of the coating compound and / or a high proportion of natural raw materials.Further disadvantages of the kit of parts known from the prior art for producing a wall and floor coating are that the wall and floor coatings have inadequate color and gloss settings and / or inadequate mechanical properties such as abrasion resistance, compressive strength and flexibility and / or consist of a high proportion of fossil raw materials. Furthermore, the coating materials produced from the kits can have inadequate processing properties. One object of the invention was therefore to provide a kit of parts for producing a wall and floor coating which at least partially overcomes one or more disadvantages of the prior art. The kit of parts is intended to be used for producing a jointless wall and floor coating. The kit of parts is intended to enable a multitude of design options through the use of a wide variety of pigments and excellent gloss settings.At the same time, the coating compound produced from the kit of parts should be easy to apply, without generating dust and without the need for complex sanding processes. Furthermore, the coating compound applied to the wall or floor should be self-venting. Furthermore, the kit of parts should have the lowest possible carbon footprint. It should enable low-emission application with rapid curing. The wall and floor coating should be suitable for indoor use, particularly in damp rooms such as bathrooms, and provide reliable protection against water penetration and associated building damage. Furthermore, the wall and floor coating should form a smooth surface that is easy to clean and allows for the bridging of cracks. Furthermore, the wall and floor coating should offer good mechanical properties such as high compressive strength combined with flexibility, high abrasion resistance, and a BU / pu 220166WO 10.April 2025 provide high water resistance and, at the same time, exhibit high yellowing resistance. A further object of the present invention is to provide a method with which a wall and floor coating with the described properties can be produced. In particular, the method should be rapid and efficient. All or some of these objects are achieved according to the invention by a kit of parts according to claim 1, a method according to claim 31, a coating composition according to claim 40, a wall and floor coating according to claim 43, and a use according to claim 47. Advantageous embodiments of the invention are specified in the dependent claims and are explained in detail below.The invention provides a kit of parts for producing a wall and floor coating, comprising a component A and a component B, wherein component A comprises at least one polyol and at least one catalyst and wherein component B is an aliphatic polyisocyanate having a viscosity, in each case determined at a temperature of 23 °C and a shear rate of 100 s. -1, from 250 mPa s to 1000 mPa s. Surprisingly, it has been found that the kit of parts according to the invention can be used to produce a coating composition which has excellent processing properties in a particularly simple manner. Component A and component B of the kit of parts according to the invention are uncomplicated to handle and can be mixed well and quickly with one another. By mixing the two components A and B, a coating composition according to the invention is obtained. BU / pu 220166WO April 10, 2025 The coating composition according to the invention cures independently and must be processed within a certain period of time. Tests have shown that the coating composition according to the invention has particularly good processing properties. The coating composition according to the invention has universal adhesion and can be applied and distributed effortlessly onto the desired substrate.Surprisingly, it has been found that by using an aliphatic polyisocyanate with a viscosity determined at a temperature of 23 °C and a shear rate of 100 s. -1, from 250 mPa s to 1000 mPa s in component B in combination with component A, a particularly easy-to-process coating composition can be obtained. In addition to the properties mentioned above, the coating composition according to the invention is characterized by excellent flow properties and outstanding modeling ability. The coating composition according to the invention is also flowable and pumpable. This saves time when applying the coating composition to the substrate. At the same time, it has been shown that the coating composition according to the invention is self-deaerating. Manual deaeration, for example by means of a spiked roller or deaeration roller, is therefore not necessary.Without wishing to be bound to a specific scientific theory, the surprising effect appears to be explained by the fact that the at least one polyol from component A and the aliphatic polyisocyanate from component B react with one another in the coating composition due to the presence of the catalyst and cure in the form of polyurethane. In particular, the coordination between the aliphatic polyisocyanate in component B and the at least one polyol in component A appears to ensure outstandingly advantageous properties of the coating composition. BU / pu 220166WO April 10, 2025 The term polyurethane herein refers in particular to one or more chemical compounds which are a reaction product of a bifunctional, trifunctional or higher-functional isocyanate with a bifunctional, trifunctional or higher-functional alcohol. The formation of polyurethanes occurs in particular through addition reactions.The wall and floor coating according to the invention exhibits a particularly good property profile. The wall and floor coating according to the invention possesses low water vapor permeability and high water resistance, thus offering high protection against water damage. Furthermore, the wall and floor coating according to the invention has a smooth surface, eliminating the need for sanding during its production. This smooth surface makes the wall and floor coating according to the invention particularly easy to clean. Furthermore, the wall and floor coating according to the invention exhibits high abrasion resistance and, at the same time, high flexibility. Furthermore, the wall and floor coating according to the invention is resistant to yellowing and exhibits excellent color and gloss adjustments.When reference is made here or elsewhere to a wall or floor coating, this means, unless stated otherwise, in particular a wall and floor coating applied to the substrate to be coated and which has cured (fully or partially). Wall or floor coating can also mean a ceiling coating. Component A and component B of the kit of parts are preferably each liquid or pasty at room temperature, independently of one another. This prevents the formation of dust when mixing component A and component B, which could lead to health risks, cleaning effort and / or material loss. BU / pu 220166WO April 10, 2025 Component A of the kit of parts according to the invention preferably contains, in each case based on the total weight of component A, at least 50% by weight, in particular at least 60% by weight, preferably at least 70% by weight, more preferably at least 80% by weight.% components of natural origin, in particular one or more polyols of natural origin. Such a proportion of components of natural origin makes it possible to obtain a resource-saving composition. This can enable the production of wall and floor coatings with a lower CO2 balance compared to conventional wall and floor coatings with comparable properties. Components of natural origin herein refer to mineral components obtained from renewable raw materials, in particular those that do not originate from fossil, carbon-containing sources such as oil, coal or gas. Chemical modifications of mineral or biomass-based compounds are also referred to as components of natural origin. Polyol Component A of the kit of parts according to the invention contains at least one polyol.When a polyol is mentioned here or elsewhere, this means in particular an organic compound with two or more hydroxyl groups. Suitable polyols are, for example, polyether polyols, polyester polyols, polycarbonate polyols, poly(meth)acrylate polyols, polyhydrocarbon polyols, polyhydroxy-functional acrylonitrile-butadiene copolymers and mixtures thereof, in particular their diols and mixtures thereof. BU / pu 220166WO April 10, 2025 Examples of polyether polyols are polyoxyethylene polyols, polyoxypropylene polyols and polyoxybutylene polyols, in particular polyoxyethylene diols, polyoxypropylene diols, polyoxybutylene diols, polyoxyethylene triols and polyoxypropylene triols. Preferably, the at least one polyol is a polyol of natural origin. Thus, a kit of parts can be produced that has particularly low CO2 emissions and / or consists largely of renewable or natural raw materials.The at least one polyol is preferably based predominantly on renewable raw materials. Preferably, the at least one polyol is based to at least 75%, more preferably to at least 80%, even more preferably to at least 90% on renewable raw materials. In a further preferred embodiment, the at least one polyol is based entirely on renewable raw materials. Such a composition can be used to produce a particularly resource-saving and sustainable wall and floor coating and / or a wall and floor coating with a low CO2 balance. According to a further preferred embodiment of the invention, the at least one polyol in component A can be a polyol having fewer than 6 hydroxyl groups, in particular having fewer than 5 hydroxyl groups, preferably having fewer than 4 hydroxyl groups. Such a polyol can be particularly suitable for producing a wall and floor coating.The hydroxyl groups of the polyol can react with the isocyanate groups of the polyisocyanate in an addition reaction, thus leading to curing of the wall and floor coating. A coating composition produced with such a polyol can be easily applied and distributed homogeneously without premature thickening or drying. At the same time, the cured wall and floor coating exhibits high flexural and compressive strength while simultaneously being highly flexible. In contrast, an excessive number of hydroxyl groups in the polyol can lead to reduced flexibility of the cured wall and floor coating due to increasing crosslinking. According to a preferred embodiment of the invention, the at least one polyol contained in component A can have three or fewer hydroxyl groups.According to a further preferred embodiment of the invention, the at least one polyol in component A can have a hydroxyl number of 150 mg KOH / g to 260 mg KOH / g, in particular of 160 mg KOH / g to 240 mg KOH / g, preferably of 180 mg KOH / g to 230 mg KOH / g, particularly preferably of 190 mg KOH / g to 220 mg KOH / g. The hydroxyl number of the at least one polyol in component A influences the crosslinking within a wall and floor coating produced from component A and component B. Using such a polyol in component A, a wall and floor coating can be obtained which has high flexural strength and compressive strength while simultaneously being highly flexible. Cracks can thus be bridged particularly well. A lower hydroxyl number can lead to less crosslinking in the wall and floor coating. This can require a longer time to cure the coating composition or wall and floor coating.At the same time, a lower hydroxyl number can lead to reduced stability or durability of the wall and floor coating. A higher hydroxyl number, on the other hand, can lead to reduced flexibility due to increased rigidity of the wall and floor coating and thus reduce the ability to bridge cracks. Methods for determining the hydroxyl number are known to the person skilled in the art. For example, the hydroxyl number can be determined according to DIN EN ISO 4629-1, in particular according to DIN EN ISO 4629-1:2016-12. The acid number required for calculating the hydroxyl number can be determined, for example, according to DIN EN ISO 2114, in particular according to DIN EN ISO 2114:2002-06. BU / pu 220166WO April 10, 2025 More preferably, the at least one polyol in component A can be a polyhydroxy-functional fat and / or oil.According to a particularly preferred embodiment, the at least one polyol in component A can be a polyhydroxy-functional fat and / or oil selected from the group consisting of linseed oil, tung oil, safflower oil, sunflower oil, coconut oil, rapeseed oil, peppermint oil, lavender oil, soybean oil, walnut oil, corn germ oil, tall oil, castor oil, cumin oil, flax oil, a modification of the listed fats and oils and / or a mixture thereof, in particular castor oil, soybean oil, rapeseed oil, sunflower oil and / or modified castor oil, modified soybean oil, modified rapeseed oil, modified sunflower oil and / or a mixture thereof. In one embodiment, component A of the kit of parts contains no further polyols besides the at least one polyol. Particularly preferably, component A of the kit of parts contains no synthetic polyols or polyols based on fossil resources.In this way, a kit of parts can be provided for the production of a wall and floor coating with particularly low CO2 emissions, consisting largely of natural raw materials. By using fats and oils based on renewable raw materials, particularly resource-efficient and sustainable coating compounds can be produced. Examples of chemically modified natural fats and oils are polyols derived from epoxy polyesters or epoxy polyethers, for example, by epoxidation of unsaturated oils followed by ring opening with carboxylic acids or alcohols.Polyols obtained by hydroformylation and hydrogenation of unsaturated oils, or polyols obtained from natural fats and oils by degradation processes such as alcoholysis or ozonolysis and subsequent chemical linking, for example by transesterification or dimerization, of the resulting degradation products or their derivatives, are also suitable. Suitable degradation products of natural fats and oils are, in particular, fatty acids, fatty alcohols, or fatty acid esters, especially fatty acid methyl esters (FAME), which can be derivatized, for example, by hydroformylation and hydrogenation to form hydroxy fatty acid esters. Examples of polyols according to the invention are ALBODUR. ® 901, ALBODUR ® 921 or ALBODUR ®1054 from Alberdingk Boley, Merginol 908 or Merginol 240 from HOBUM Oleochemicals, NEUKAPOL 1002, NEUKAPOL 1007, NEUKAPOL 1008, NEUKAPOL 1030, or NEUKAPOL 1570 from Altropol Kunststoff. According to a further preferred embodiment of the kit of parts according to the invention, the at least one polyol in component A has a molecular weight of 250 g / mol to 3000 g / mol, more preferably of 500 g / mol to 3000 g / mol or of 600 to 2500 g / mol. Particularly preferably, the at least one polyol in component A of the invention can have a viscosity of 500 mPa s to 5000 mPa s, in particular of 800 mPa s to 4500 mPa s, preferably of 1000 mPa s to 4000 mPa s or of 1500 mPa s to 4000 mPa s, more preferably of 1500 mPa s to 3500 mPa s or of 2000 to 3500 mPa s, in each case determined at a temperature of 23°C and a shear rate of 100 s -1, have. Such a polyol makes component A of the kit of parts particularly easy to process. Furthermore, such a polyol can ensure that a coating composition produced from the kit of parts has good flow properties and / or a particularly smooth surface of the wall and floor coating is obtained. A lower viscosity can make applying the wall and floor coating to the wall very difficult or require an excessively high addition of standardizing agent. Likewise, a lower viscosity can impair the adhesion properties. A higher viscosity can make applying and modeling the wall and floor coating more difficult, as well as the ability to compensate for unevenness. As a result, a sanding process may be necessary to obtain a wall and floor coating with a smooth surface. BU / pu 220166WO April 10, 2025 Catalyst Component A of the kit of parts according to the invention contains a catalyst.The catalyst catalyzes in particular the crosslinking between the at least one polyol of component A and the aliphatic polyisocyanate of component B. This forms a polyurethane. The catalyst thus enables the curing of the coating composition to take place at room temperature. An elevated temperature for drying is therefore not necessary. Furthermore, the curing or pot life of the coating composition can be adjusted as required by the catalyst. This ensures particularly advantageous processing properties, whereby the coating composition according to the invention is outstandingly suitable for the production of wall and floor coatings. According to a preferred embodiment of the kit of parts according to the invention, the catalyst in component A can be a tin catalyst, in particular an organotin compound, particularly preferably an organotin(IV) compound.Such catalysts enable particularly good adjustment of the drying time of the produced coating composition. In particular, these catalysts can achieve complete curing of the applied coating composition while simultaneously maintaining good processing properties and a sufficient pot life. According to a preferred embodiment of the invention, the catalyst in component A can be a metal catalyst, for example a tin catalyst, in particular an organometallic catalyst, for example an organotin catalyst. The metal can in particular be a metal from main group 4. The catalyst can, for example, be selected from the group consisting of dibutyltin dichloride, dioctyltin diacetylacetonate, bis(dodecylthio)dimethylstannane, bis(dodecylthio)dioctylstannane, dibutyltin diacetate, dibutyltin diacetylacetonate, dimethyltin dilaurate, and dioctyltin dicarboxylates.Suitable catalysts include, for example, dioctyltin diacetate, dioctyltin dilaurate, bis[(2-ethyl-1-oxohexyl)oxy]dioctylstannane, or bis(neodecanoyloxy)dioctylstannane. A particularly suitable catalyst is bis(neodecanoyloxy)dioctylstannane. Such catalysts enable particularly high selectivity and activity in the crosslinking between the at least one polyol in component A and the aliphatic polyisocyanate in component B without resulting in an excessively short pot life. At the same time, such catalysts can reduce the amount of catalyst required to cure the coating composition, which contributes to the conservation of finite resources. Component A of the kit of parts according to the invention can preferably contain, in each case based on the total weight of component A, 0.005 wt.% to 0.05 wt.%, in particular 0.008 wt.% to 0.04 wt.%, preferably 0.01 wt.% to 0.03 wt.%, particularly preferably 0.015 wt.% to 0.025 wt. %, of catalyst. Such an amount of catalyst is particularly suitable for curing the coating composition while at the same time ensuring good processability. Curing can therefore be achieved at room temperature. Smaller amounts of catalyst, on the other hand, can lead to an increased drying time or to incomplete curing of the wall and floor coating. This can result in a wall and floor coating with lower compressive strength and abrasion resistance. Higher amounts of catalyst can lead to poorer processing properties of the coating composition due to an insufficient pot life. Furthermore, a homogeneous distribution of the coating composition prepared from the kit of parts on the surface to be coated would be greatly impeded by premature drying or curing. In a further preferred embodiment of the invention, component A contains, in each case based on the total weight of component A, 30 wt.% to 80 wt.%, in particular 35 wt.% to 75 wt.%, preferably 40 wt.% to 65 wt.%, particularly preferably 45 wt.% to 60 wt.%, further preferably 49 to 55 wt.%, of the at least one polyol and 0.005 wt.% to 0.05 wt.%, in particular 0.008 wt.% to 0.04 wt.%, preferably 0.01 wt.% to 0.03 wt.%, BU / pu 220166WO April 10, 2025 particularly preferably 0.015 wt.% to 0.025 wt.%, further preferably 0.018 wt.% to 0.022 wt.%, of catalyst. Such a composition can lead to a particularly resource-saving, sustainable wall and floor coating in combination with particularly good processing properties of the coating composition. Such a composition allows the kit of parts to be converted into a coating compound with particularly good adhesion properties on the substrate to be coated.Furthermore, such a composition can be used to produce a wall and floor coating with particularly low CO2 emissions, which is highly water and abrasion resistant and at the same time flexible. Alkyd resin Furthermore, component A of the kit of parts can contain at least one alkyd resin. Alkyd resins are polycondensation resins made from polyols, polybasic carboxylic acids and fatty oils or free natural and / or synthetic fatty acids. At least one of the polyols must be tri- or higher functional. The alkyd resin can act as a carrier material for pigments and increase the wetting properties. This can enable particularly homogeneous application of the coating material produced from the kit of parts. Furthermore, the alkyd resin can react with the aliphatic polyisocyanate in component B by an addition reaction and thus contribute to crosslinking.As a result, the mechanical properties of the wall and floor coating produced from the kit of parts, in particular the abrasion resistance, hardness, and compressive strength, can be increased. BU / pu 220166WO April 10, 2025 The at least one alkyd resin can be a short-chain alkyd resin (where the oil content is below 40 wt.% based on the total weight of the alkyd resin), a medium-oil alkyd resin (where the oil content is between 40 and 60 wt.% based on the total weight of the alkyd resin), or a long-oil alkyd resin (where the oil content is above 60 wt.% based on the total weight of the alkyd resin). Examples of the polyol component in the at least one alkyd resin are ethanediol, propanediol, diethylene glycol, glycerin, trimethylpropane (TMP), pentaerythritol, dipentaerythritol, or neopentyl glycol.Examples of polybasic carboxylic acids in the at least one alkyd resin are o-phthalic acid, isophthalic acid, terephthalic acid, trimellitic anhydride, tetrahydrophthalic acid, hexahydrophthalic acid, endomethylenetetrahydrophthalic acid, maleic anhydride, nonanedioic acid, sebacic acid, or adipic acid. Furthermore, the alkyd resin can be an alkyd resin based on natural oils or fatty acids. Preferably, the fats and oils are selected from the group consisting of linseed oil, soybean oil, tall oil fatty acids, coconut oil, castor oil, peanut oil, tung oil, sunflower oil, and safflower oil, and mixtures thereof and / or a chemical modification thereof. More preferably, the at least one alkyd resin is based on renewable raw materials to an extent of at least 50 wt.%, preferably at least 70 wt.%, more preferably at least 80 wt.%, based in each case on the total weight of the at least one alkyd resin.This allows the proportion of renewable raw materials in the kit of parts and in the resulting wall and floor coating to be further increased. Examples of at least one alkyd resin are WorléeKyd C 9002 W, WorléeKyd VP CA 8004, WorléeKyd RL 1290, WorléeKyd L 7904, WorléeKyd V 5241 U, WorléeKyd B 6301, WorléeKyd T 7313, WorléeKyd BT 6501, or WorléeKyd S23 from WORLÉE, as well as Synolac WP 4060 from Arkema Coating Resins. BU / pu 220166WO April 10, 2025 Component A can preferably contain, based in each case on the total weight of component A, 0 wt.% to 20 wt.%, in particular 0.1 wt.% to 15 wt.%, preferably 0.2 wt.% to 10 wt.%, further preferably 0.5 wt.% to 8 wt.%, particularly preferably 2 wt.% to 6 wt.%, of alkyd resin. Moisture binder Component A can further contain a moisture binder. All substances capable of physically or chemically binding water can be used as moisture binders.The moisture binder can remove moisture from the polyurethane system through chemical bonding or water adsorption. This suppresses the reaction of the aliphatic polyisocyanate in component B of the kit of parts with water. This prevents the formation of urea and CO2 emissions, as well as foaming of the coating compound. Examples of moisture binders include aluminum oxide, magnesium oxide, calcium hydride, calcium oxide, calcium sulfate, potassium carbonate, potassium hydroxide, copper sulfate, magnesium sulfate, sodium sulfate, lithium aluminum hydride, sodium hydroxide, silica gel, or molecular sieve. Molecular sieve is a particularly suitable moisture binder. This allows the coating compound obtained from the kit of parts to achieve good processing properties, in particular a sufficient pot life without premature viscosity increase.At the same time, CO2 emissions and the formation of microbubbles in the wall and floor coating can be particularly effectively avoided. In particular, the moisture binder is a molecular sieve with a pore size of 1 to 5 Å, preferably 2 to 4 Å, and in particular about 3 Å. Such a molecular sieve can bind moisture particularly effectively. BU / pu 220166WO April 10, 2025 Component A can preferably contain, in each case based on the total weight of component A, 2 wt.% to 20 wt.%, in particular 4 wt.% to 18 wt.%, preferably 7 wt.% to 14 wt.%, more preferably 7 wt.% to 12 wt.%, even more preferably 8 to 10 wt.%, of moisture binder. Such a proportion of moisture binder can lead to particularly advantageous processing properties.An insufficient moisture binder content can negatively impact the mechanical and physical properties of the wall and floor coating produced from the kit of parts. A reaction of the aliphatic polyisocyanate with water or moisture cannot be completely ruled out. This could result in the formation of carbon dioxide bubbles that penetrate the wall and floor coating in microfine particles and reduce its mechanical and physical properties, such as abrasion and water resistance. At the same time, the processing properties would be negatively impacted, as contact with moisture can lead to a rapid increase in the viscosity of the coating compound, resulting in premature gelling or a significantly reduced pot life. An excessive moisture binder content, on the other hand, can lead to impaired mechanical properties of the wall and floor coating.Furthermore, a higher proportion of moisture binder can impair the adhesion of the coating compound made from the kit of parts to various substrates / surfaces and the general workability. Filler Component A can contain one or more fillers. In particular, the filler in component A can be a filler selected from the group consisting of dolomite, barium sulfate, feldspar, quartz, calcium carbonate, mica, kaolin, calcined kaolin, talc, diatomaceous earth, and mixtures thereof, in particular barium sulfate, calcium carbonate, mica or mixtures thereof. It has been found that such a filler leads to excellent processing properties of component A of the kit of parts. At the same time, particularly high abrasion resistance of the wall and floor coating can be achieved with high flexibility and water resistance.According to a further preferred embodiment of the kit of parts according to the invention, the filler in component A can comprise mica, in particular fluorphlogopite. The mica is preferably a pearlescent pigment. Such a filler can contribute to excellent gloss settings. In addition, such a filler can enable a wide variety of design options in combination with appropriate pigments. At the same time, such a filler can achieve high color purity and / or multicoloration. The use of such a filler can also enable a wide variety of gloss and color settings without the need for the use of metallic effect pigments. In a preferred embodiment of the invention, the filler, in particular the mica, can have a particle size D50 of 5.0 µm to 60 µm, in particular of 10 µm to less than 30 µm, preferably of 15.0 µm to 28.0 µm, more preferably of 20.0 µm to 25.0 µm.The mica advantageously has a particle size D90 of 5.0 µm to 100 µm, in particular of 10 µm to 80 µm, preferably of 30.0 µm to 50.0 µm, more preferably of 35.0 µm to 45.0 µm. Such a particle size can contribute to particularly high abrasion resistance of a wall and floor coating produced from the kit of parts. At the same time, such a particle size allows a particularly fine distribution of the filler, in particular of the mica, whereby excellent color and gloss settings can be achieved. The D50 value refers to the size at which 50%, e.g. 50% by weight, are smaller than the specified size. For example, 50%, e.g. 50% by weight, of the particles would then pass a theoretical sieve size. Methods for determining particle sizes BU / pu 220166WO 10 April 2025 and D50 values ​​or D90 values ​​are known to the person skilled in the art.The mean particle size, in particular the D50 value, can be determined, for example, by creating a particle size distribution. The measurement can be carried out, for example, by light scattering, in particular by laser diffraction or photon correlation spectroscopy. In particular, the mean particle size, in particular the D50 value, can be measured in a gaseous medium, for example in air. For example, a Malvern Mastersizer 2000 or 3000 can be used to determine the mean particle size, in particular the D50 value. Other options for determining the mean particle size, in particular the D50 value, are light and / or laser diffraction. The mean particle size, in particular the D50 value, can also be determined using sieve experiments. The same analytical methods are also suitable for determining the D90 value.Component A can preferably contain, in each case based on the total weight of component A, 0.5 wt.% to 60 wt.%, in particular 5 wt.% to 55 wt.%, preferably 20 wt.% to 50 wt.%, more preferably 25 wt.% to 45 wt.%, particularly preferably 30 to 40 wt.%, of filler. Such a filler content can result in particularly good processability of the coating composition resulting from the kit of parts. A lower filler content could reduce the durability and longevity, in particular the abrasion resistance, of the wall and floor coating. A higher filler content, on the other hand, could make it more difficult to apply the coating composition homogeneously to the substrate to be coated and to model the applied coating composition. Furthermore, the formation of a smooth surface could be made more difficult, so that sanding of the wall and floor coating would be necessary to create a smooth surface.In a further preferred embodiment, component A of the kit of parts according to the invention can comprise 0.5 wt. % to 20 wt. %, in particular 1 wt. % to 15 wt. %, preferably 2 wt. % to 10 wt. %, further preferably 2 wt. % to 8 wt. %, BU / pu 220166WO April 10, 2025 most preferably 3 wt. % to 7 wt. %, in each case based on the total weight of component A, of mica, in particular fluorphlogopite. Such a proportion makes it possible to achieve particularly good gloss settings in the wall and floor coatings. Furthermore, such a proportion allows the wall and floor coating to be excellently modeled. A lower proportion, on the other hand, could impair the gloss settings. A higher proportion, on the other hand, could adversely affect the modelability of the coating composition produced from the kit of parts. Pigment Component A can further contain one or more pigments.In particular, the pigment may be an organic or inorganic pigment or a mixture thereof, in particular titanium dioxide, iron oxide yellow, arylide yellow, bismuth vanadate, diarylide yellow, an azo condensation pigment, pyranthone, isoindoline, anthraquinone, a derivative of dioxazine, perinone, a naphthol AS derivative, perylene, quinacridones, indanthrenes, phthalocyanines, rutile tin zinc, quinacridone, diketopyrrolopyrrole, iron oxide red, phthalocyanine blue, dioxazine, cobalt blue, ultramarine blue, phthalocyanine green, chromium oxide green, cobalt green, carbon black, iron oxide black, pyrazoloquinazolone, naphthol AS monoazo pigment, Pigment Violet 23 or a mixture thereof. By using pigments, colored wall and floor coatings can be produced which, depending on the pigment, can cover different desired areas of the color spectrum and / or create different color effects.According to a preferred embodiment of the invention, component A can contain, in each case based on the total weight of component A, 0 wt.% to 20 wt.%, in particular 0.01 wt.% to 15 wt.%, preferably 0.1 wt.% to 10 wt.%, more preferably 0.2 wt.% to 8 wt.%, even more preferably 0.5 to 5 wt.%, of pigment. BU / pu 220166WO April 10, 2025 According to a further preferred embodiment of the invention, the color of the wall and floor coating can be adjusted, for example, by adding pigment at the point of sale using a color mixing system. This makes it possible to cover a large number of different colors and achieve particularly customer-oriented and diverse color design options. Furthermore, the applicability of the kit of parts for producing a wall and floor coating can be simplified by adjusting the color at the point of sale.There is no need to mix different color shades to achieve the desired color at the point of use of the kit of parts. Additives Component A may further contain one or more additives, in particular rheology additives, defoamers, dispersants and / or extenders. Additives can improve the processing properties of component A and / or the coating composition. A rheology additive used may, for example, be a polyamide, a modified urea, a polyurea, a cellulose derivative, a polyacrylate, a polysaccharide, a starch derivative, a polyurethane, a cellulose ether, a sheet silicate, hectorite, bentonite, cotton fibers, glass fibers, polymer fibers or a mixture thereof, in particular modified urea. Such a rheology additive leads to improved rheological properties and improved processing properties of component A and the coating composition.In particular, component A of the kit of parts according to the invention can contain, in each case based on the total weight of component A, from 0.01% by weight to 2% by weight, in particular from 0.02% by weight to 1% by weight, preferably from 0.05% by weight to 0.5% by weight, particularly preferably from 0.1% by weight to 0.15% by weight, of rheology additive. BU / pu 220166WO April 10, 2025 The defoamer used can be, for example, a monoglyceride, diglyceride, triglyceride, polyolefin copolymer, dimethylpolysiloxane, polysiloxane, a mineral oil defoamer, an oxirane derivative, or a mixture thereof, in particular a polyolefin copolymer. This can suppress undesired foam formation. In particular, component A of the kit of parts according to the invention can contain, in each case based on the total weight of component A, 0.01 wt.% to 2 wt.%, in particular 0.1 wt.% to 1.5 wt.%, preferably 0.2 wt.% to 1.0 wt.%, particularly preferably 0.3 wt.% to 0.7 wt.%, of defoamer.For example, an anionic surfactant, cationic surfactant, nonionic surfactant, polyurethane, polyacrylate, polyphosphate, or a mixture thereof can be used as a dispersant. Such a dispersant can improve the mixing of the components and thereby increase the storage life of component A. In particular, component A of the kit of parts according to the invention can contain, in each case based on the total weight of component A, 0 wt.% to 2 wt.%, 0.01 wt.% to 2 wt.%, in particular 0.05 wt.% to 1.5 wt.%, preferably 0.1 wt.% to 1.0 wt.%, particularly preferably 0.2 wt.% to 0.9 wt.%, of dispersant. In a further embodiment of the invention, component A can contain extenders as an additive. Extenders here refer to additives that serve for thioxotropy. Extenders that can be used include, for example, silica or polyacrylic acids.A particularly suitable suspending agent is silica, in particular pyrogenic silica. By adding a suspending agent, the viscosity of component A and of a coating composition produced from the kit of parts can be increased to a level optimal for processing. Furthermore, the addition of a suspending agent can impart pronounced thixotropic behavior to the coating composition, which can simplify the use of the coating composition, in particular for application to wall surfaces. By increasing the viscosity, the addition of silica can also delay the sedimentation of the dispersed solids in component A and thus lead to a longer storage time for component A. In particular, component A of the kit of parts according to the invention can contain, in each case based on the total weight of component A, 0 wt.% to 5 wt.%, 0.2 wt.% to 5 wt.%, in particular 0.5 wt.% to 4 wt.%, preferably 0.5 wt.% to 3 wt.%, particularly preferably 1 wt. % to 2 wt. %, of extenders. The total amount of additives contained in component A can preferably be 0.01 wt. % to 5 wt. %, in particular 0.1 wt. % to 4 wt. %, preferably 0.2 wt. % to 3 wt. %, particularly preferably 0.3 wt. % to 2 wt. %, in each case based on the total weight of component A. Secondary polyamine Furthermore, component A can contain one or more secondary polyamines. The secondary polyamine can react with the NCO group of the at least one aliphatic isocyanate in component B and thus contribute to faster drying of the applied coating composition. According to a preferred embodiment of the kit of parts according to the invention, the secondary polyamine can be a reaction product of a diamine and one or more unsaturated dicarboxylic acids. In particular, the secondary polyamine can be an aspartic acid ester, preferably a polyaspartic acid ester.Such compounds can enable the application of high layer thicknesses and contribute to particularly rapid drying of the applied coating composition. BU / pu 220166WO April 10, 2025 In a further preferred embodiment, the secondary polyamine can be a polyaspartic acid ester according to the following formula (I). where R represents an alkyl radical. The alkyl radicals can be branched or unbranched. Examples of alkyl radicals are methyl, ethyl, or propyl groups. X represents a linear or cyclic aliphatic radical. For example, the radical X can correspond to the radical of ethylenediamine, 1,2-diaminopropane, 1,4-diaminobutane, 1,6-diaminohexane, 2,5-diamino-2,5-dimethylhexane, 2,2,4- and / or 2,4,4-trimethyl-1,6-diaminohexane, 1,11-diaminoundecane, 1,12-diaminododecane, 1-amino-3,3,5-trimethyl-5-aminomethylcyclohexane, 2,4' and / or 4,4'-diaminodicyclohexylmethane, 3,3'-dimethyl-4,4'-diaminodicyclohexylethane or 2,4,4'-5-triamino-5-methyldicyclohexylmethane. By using such a polyaspartic acid ester, a particularly low content of volatile organic compounds (VOC content) can be achieved in component A. Polyaspartic acid esters are available, for example, under the trade name Desmorphen ® NH 1220, Desmorphen ® NH 1420, Desmorphen ®NH 1422, Desmorphen ® NH 1423 LF, Desmorphen ® NH 1720, Desmorphen ® NH 1723 LF, Desmorphen ® NH 1520, Desmorphen ® NH 1523 LF oder Desmorphen ®NH 1521, from Covestro AG. In a further preferred embodiment of the invention, component A can contain, in each case based on the total weight of component A, 0 wt.% to 10 wt.%, in particular 0.05 wt.% to 8 wt.%, preferably 0.1 wt.% to 5 wt.%, further preferably 0.5 wt.% to 3 wt.%, particularly preferably 1 wt.% to 2 wt.% of a BU / pu 220166WO April 10, 2025 secondary polyamine, in particular aspartic acid ester. The addition of such amounts of amino acid ester can be particularly suitable for accelerating the drying time of the wall and floor coating produced from the kit of parts and at the same time maintaining a pot life of the coating composition sufficient for application. Higher proportions of aspartic acid ester, on the other hand, can lead to lower flexibility of the wall and floor coating, which makes it more difficult to bridge cracks in the substrate. Solvent Component A may also contain solvents.Component A of the kit of parts according to the invention can preferably contain <10 wt. %, preferably <5 wt. %, more preferably <3 wt. %, and particularly preferably <2 wt. %, of organic solvent, based in each case on the total weight of component A. This results in low volatility of component A and a low health risk from component A. Consequently, the VOC content of component A can be kept low. Aliphatic polyisocyanate Component B contains an aliphatic polyisocyanate with a viscosity, in each case determined at a temperature of 23°C and a shear rate of 100 s. -1 , from 250 mPa·s to 1000 mPa·s. The aliphatic polyisocyanate in component B of the kit of parts according to the invention preferably has a viscosity, in each case determined at a temperature of 23 °C and a shear rate of 100 s -1, from 300 mPa s to 950 mPa s or from 300 mPa s to 880 mPa s, in particular from 400 mPa s to 900 mPa s, preferably from 450 mPa s to 850 mPa s, more preferably from 550 to 830 mPa s, BU / pu 220166WO April 10, 2025 even more preferably from 600 mPa s to 830 mPa s, particularly preferably 700 mPa s to 750 mPa s. Such a polyisocyanate enables component B of the kit of parts to be processed particularly well and mixed excellently with component A. Such a polyisocyanate can ensure that a coating composition produced from the kit of parts has good flow properties. Likewise, such a polyisocyanate can be used to obtain a particularly smooth surface of the wall and floor coating. A lower viscosity can make it very difficult to apply the wall and floor coating to the wall or require an excessive amount of setting agent.At the same time, lower viscosity can result in poorer adhesion to the substrate. Higher viscosity can complicate the application and modeling of the wall and floor coating, as well as the ability to level out unevenness. As a result, sanding may be necessary to obtain a wall and floor coating with a smooth surface. When a polyisocyanate is mentioned here or elsewhere, this refers in particular to an organic compound with two or more isocyanate groups. According to a further preferred embodiment of the kit of parts according to the invention, the aliphatic polyisocyanate in component B has an NCO content of 16% to 30% or 18% to 28%, in particular 20% to 26%, particularly preferably 22% to 25%, determined according to M105-ISO 11909. Such an NCO content can contribute to a particularly high storage stability of component B of the kit of parts.Furthermore, the NCO content of the aliphatic polyisocyanate can be used to adjust the crosslinking density with the at least one polyol in component A. Such a polyisocyanate can therefore be used to obtain a wall and floor coating that exhibits particularly high water resistance and high abrasion resistance. A lower NCO content, on the other hand, can lead to lower water resistance and a reduction in the mechanical strength of the wall and floor coating. A higher NCO content, on the other hand, can increase the formation of urea and undesirable CO2 emissions during drying of the applied coating compound. Furthermore, a higher NCO content can lead to a wall and floor coating with reduced flexibility. In principle, both linear and branched aliphatic polyisocyanates are suitable.A linear aliphatic polyisocyanate is particularly preferably used as the aliphatic polyisocyanate in component B. According to a further preferred embodiment of the kit of parts according to the invention, the aliphatic polyisocyanate in component B is a polyisocyanate based on hexamethylene diisocyanate (HDI). Such a polyisocyanate can contribute to particularly good processability of component B and a coating composition produced from the kit of parts. Using such a polyisocyanate, in combination with the catalyst, the desired pot life and curing time can be particularly well adjusted. At the same time, such a polyisocyanate can increase the yellowing resistance and thus the longevity of the wall and floor coating. A particularly preferred aliphatic polyisocyanate in component B is an aliphatic polyisocyanate resin based on hexamethylene diisocyanate. This is available, for example, under the trade name Desmodur.® Ultra N 3600, Desmodur ® Ultra N 3900, Desmodur ® Ultra N 31100 oder Desmodur ® NZ 300 von der Covestro AG, TolonateTM HDT-LV2 or TolonateTM 450 der Firma Vencorex, Wannate ® HT-500 der Wanhua Chemical Group Co., Ltd., DURANATE™ Fine TMA-100 der Asahi Kasei Coorporation, Basonat ® AND 1000 or Bassoons ®HA 2000 from BASF SE. Component B of the kit of parts according to the invention is preferably substantially free of organic solvents. In particular, component B of the kit of parts according to the invention preferably contains, in each case based on the total weight of component B, <3% by weight, preferably <1% by weight, more preferably <0.1% by weight BU / pu 220166WO April 10, 2025 and particularly preferably <0.01% by weight, of organic solvent. This results in low volatility of component B and a low health risk from component B. Component B of the kit of parts preferably contains, in each case based on the total weight of component B, 60% by weight to 100% by weight, in particular 70% by weight to 100% by weight, preferably 80% by weight to 100% by weight, particularly preferably 90% by weight to 100% by weight, of aliphatic polyisocyanate.Such a proportion of aliphatic polyisocyanate ensures particularly good crosslinking between the polyol in component A and the polyisocyanate in component B of the kit of parts, thus ensuring high abrasion and water resistance while maintaining high flexibility of the wall and floor coating. In addition to the aliphatic polyisocyanate, component B may also contain other components, in particular additives, moisture binders, and / or fillers, for example, as defined above under component A. Everything stated regarding the optional components for component A also applies equally to component B.The invention further provides a method for producing a wall and floor coating, comprising the steps: a) providing a substrate to which the wall and floor coating is applied, b) leveling the substrate provided in step a) with a suitable filler, c) mixing components A and B of the kit of parts, d) applying the mixture contained in step c) to the substrate prepared in step b), e) applying a sealing layer to the mixture applied in step d), BU / pu 220166WO April 10, 2025 wherein the application in steps d) and e) preferably only takes place when at least the surface of the previously applied layer has begun to dry or has dried. For the kit of parts, component A and component B, what has been said above with regard to the kit of parts according to the invention applies analogously.Such a process enables the resource-efficient production of a wall and floor coating that exhibits universal adhesion to the substrate, a smooth surface, and low water vapor permeability or high water resistance. The substrate provided in step a) of the process according to the invention can consist of any suitable material selected from the group consisting of concrete, screed, plaster, plasterboard, plastic, metal, glass, rubber, wood, and a combination thereof. Preferably, the substrate provided in step a) of the process according to the invention consists of concrete, screed, plaster, plasterboard, or metal. Preferably, the suitable filler in step b) of the process according to the invention can be a two-component epoxy resin-based filler. Such a filler can achieve particularly good adhesion of the wall and floor coating to various substrates.At the same time, such a filler compound is easy to process, leads to a very dense film formation and to increased flexibility of the wall and floor coating. In a further preferred embodiment of the process according to the invention, the mixing in step c) can take place in a mixing ratio of component A to component B, in each case based on the total weight of the mixture, of 1:1 parts by weight to 10:1 parts by weight, in particular of 1:1 parts by weight to 5:1 parts by weight, particularly preferably of 1.5:1 parts by weight to 3:1 parts by weight. Such a mixing ratio ensures a particularly efficient combination of the constituents of component A and component B, whereby a wall and floor coating with high water resistance, compressive strength and flexibility can be obtained. BU / pu 220166WO April 10, 2025In addition, the coating compound prepared from the kit of parts can be easily modeled and a particularly smooth surface of the wall and floor coating can be achieved. This eliminates the need for intermediate sanding before applying a subsequent coat. A higher proportion of component A may result in poorer mechanical properties, such as reduced abrasion resistance due to incomplete curing of the polyurethane system. A lower proportion of component A may result in the polyisocyanate in component B forming urea and emitting CO2, which could result in a foamed and rough or porous surface of the wall and floor coating. This could reduce the mechanical properties, such as flexibility and compressive strength, of the cured wall and floor coating.In a further preferred embodiment of the process according to the invention, the mixing in step c) can take place in a mixing ratio of component A to component B such that the molar ratio between free isocyanate groups (NCO groups) of component B and hydroxyl groups (OH groups) of component A in the mixture before the reaction is between 0.8 and 1.2, in particular between 0.9 and 1.15, more preferably between 0.9 and 1.1. Such a ratio leads to particularly advantageously pronounced mechanical properties of the wall and floor coating, in particular to excellent hardness combined with simultaneous flexibility. The mixing of components A and B of the kit of parts in step c) of the process according to the invention can preferably take place at temperatures of 0 °C to 50 °C, in particular from 8 °C to 40 °C, preferably from 10 °C to 35 °C, more preferably from 20 °C to 30 °C.At such temperatures, which are generally found in rooms and outdoor areas, uniform mixing of the components is possible and a coating composition with the desired processing properties (not too solid and not too liquid) is obtained. At lower temperatures, there is a risk that the components will separate and / or some of the components will solidify. At higher temperatures, the consistency of the coating composition may be too liquid to allow application. Separation of the components is also possible at higher temperatures. Preferably, the mixture of components A and B in step d) of the process according to the invention can be applied with a thickness of 300 μm to 600 μm for a wall coating and / or a thickness of 1000 to 3000 μm for a floor coating. Such an application can ensure high water resistance and high compressive strength.At the same time, such an application enables good modeling properties. A lower application thickness, on the other hand, can lead to lower water resistance and poorer mechanical properties. A higher layer thickness can impair the modeling properties and the formation of a smooth surface of the wall and floor coating. According to a further preferred embodiment of the method according to the invention, the mixture obtained from step c) can be applied to the substrate in step d) using an application agent comprising a plate, wherein at least one long side of the plate comprises a plurality of tooth-shaped protruding regions having a triangular, rectangular, round, or trapezoidal, in particular a trapezoidal, profile. By using such an application agent, the coating composition obtained from step c) can be applied particularly homogeneously to the substrate.At the same time, such an application means can be used to model the surface of the applied coating compound and still achieve a wall and floor coating with a smooth surface. More preferably, the application means can be a notched trowel, in particular a notched trowel with trapezoidal teeth, in which the outwardly projecting sides of the teeth have a pointed profile. In particular, the length of the teeth is adapted to the layer thickness of the coating compound to be applied. BU / pu 220166WO April 10, 2025 The toothing preferably has a tooth height (Zh) of 5.5 mm and / or a tooth width (Zb) of 2 mm and / or a tooth width (Zw) of 7 mm and / or a tooth flank (ZF) of 6 mm. With a trapezoidal toothing, the teeth are designed in the shape of triangles. These are arranged at a specific distance from one another on at least one long side of the panel.The tooth height describes the distance between the outwardly protruding "tip" of a triangle and the base line of the long side of the corresponding slab on which the tooth is located. The tooth width describes the shortest distance between two adjacent teeth. This distance represents the shorter of the two base sides of a trapezoid. The tooth width describes the distance between two adjacent outwardly protruding "tips" of the teeth. This distance represents the longer of the two base sides of a trapezoid. The tooth flank describes the length of one side of the triangular tooth profile protruding from the long side of the slab. The tooth height (Zh), tooth width (Zb), tooth width (Zw) and tooth flank (ZF) are also shown in Fig. 1b. It has been shown that this type of notched trowel can be particularly suitable for achieving a homogeneously smooth surface on wall and floor coverings.At the same time, the applied mixture can be modeled particularly well using such a notched trowel. Furthermore, a notched trowel with a trapezoidal tooth profile can reduce air turbulence compared to conventional notched trowels with a rectangular tooth profile. This makes it possible to obtain a particularly smooth surface with few, if any, air pockets. In a further embodiment of the method according to the invention, the mixture obtained in step c) can be applied to the substrate in step d) using an application agent which comprises a toothed strip and a receiving holder, wherein at least one long side of the toothed strip has a plurality of tooth-shaped, protruding regions. The toothed strip is connected to the receiving holder by frictional engagement, positive engagement, and / or by fastening means such as rivets or BU / pu 220166WO April 10, 2025 screws.The toothed strip is rectangular, with the long side defining the length of the rectangle. The tooth-shaped protruding regions can be located on one long side or on both long sides of the toothed strip. The tooth-shaped protruding regions preferably have a triangular, rectangular, round or trapezoidal profile, in particular a triangular profile. This embodiment of the method according to the invention is particularly preferred for the upright and / or large-area application of the mixture obtained in step c). More preferably, the aforementioned application means is a doctor blade, in particular a surface doctor blade, with triangular teeth. The length of the teeth is preferably adapted to the layer thickness of the coating composition to be applied. In particular, the teeth have a tooth height (Zh) of 3 to 8 mm, in particular of approximately 5.5 mm.The tooth height describes the distance between the outwardly projecting "tip" of a triangle and the base line of the long side of the corresponding toothed strip on which the tooth is located. The toothed strip preferably has a length of 200 to 400 mm, in particular of approximately 280 mm. More preferably, the holder comprises a receptacle for a handle nozzle, to which in particular a device handle can be attached. It is also conceivable for the handle nozzle to be non-detachably connected to the holder. Such a squeegee can be particularly well suited for applying the coating compound obtained in step c) to large surfaces, in particular large floor areas. The ability to use such a squeegee while standing reduces the strain on users and increases the speed of application.The aforementioned application means, in particular the squeegee, are also suitable for leveling the substrate prepared in step a) in step b), in particular for applying and / or distributing a suitable filler. BU / pu 220166WO April 10, 2025 What was said in connection with the application means therefore also applies to step b) of the method according to the invention. In a preferred embodiment of the method according to the invention, application in steps d) and e) only takes place when the previously applied layer is dry, in particular completely dry. More preferably, a time window of 2 to 48 hours can be observed between steps b), d) and e) of the method according to the invention. Such a time window ensures sufficient drying of the individual layers before the next layer is applied or the surface is further treated.This allows good mechanical and physical properties of the wall and floor coating, such as flexibility and abrasion resistance, to be maintained while maintaining pronounced stability. A shorter time window, however, can lead to undesirable reactions between the components of the various layers, for example, if a layer contains water, which reacts with polyisocyanate to form CO2 and urea. This can result in a rough surface and reduced abrasion resistance and flexibility. In a further preferred embodiment of the process according to the invention, the surface of the mixture applied in step d) is not sanded before application of the sealing layer in step e). By omitting sanding, the wall and floor coating can be produced in a particularly simple and user-friendly manner.At the same time, a smooth surface of the mixture applied in step d) can be obtained without additional sanding. In addition to increased effort in producing the wall and floor coating, additional sanding could lead to undesirable optical properties of the wall and floor coating. According to a further preferred embodiment of the process according to the invention, the sealing layer in step e) can be a transparent two-component polyurethane composition. Such a sealing layer is particularly suitable for sealing the wall and floor coating obtained from the kit of parts. The sealing layer can lead to increased water resistance, abrasion resistance, and / or durability of the wall and floor coating. At the same time, a smooth, in particular a smooth and easy-to-clean surface can be obtained.Furthermore, such a sealing layer can enable good gloss adjustments of the wall and floor coating. In a particularly preferred embodiment of the method according to the invention, the sealing layer is applied in step e) using an application means comprising a toothed strip and a receiving holder, wherein at least one long side of the toothed strip has a plurality of tooth-shaped protruding regions. The toothed strip is connected to the receiving holder by frictional engagement, positive engagement, and / or by fastening means such as rivets or screws. The toothed strip is rectangular, wherein the long side defines the length of the rectangle. The tooth-shaped protruding regions can be located on one long side or on both long sides of the toothed strip. By using such an application means, the sealing layer can be applied particularly finely in step e).In contrast to roller application of the sealing layer, a pitted and / or rough surface texture of the wall and floor coating can be avoided. A squeegee is also preferred as the application tool. The tooth-shaped protruding areas of the toothed strip have a special rectangular toothing, with the spaces between the teeth being parabolic. In particular, the length of the toothing is adapted to the thickness of the sealing layer to be applied. The toothing preferably has a tooth height (Zh) of 0.3 to 1.5 mm, in particular of 0.5 to 1.4 mm, preferably of 0.8 to 1.3 mm and / or a tooth width (Zw) of 0.5 to 2 mm, in particular of 0.8 to 1.9 mm, preferably of 1.2 to 1.8 mm and / or an outer tooth length (Za) of 0.1 to 1 mm, in particular of 0.2 mm to 0.9 mm, preferably of 0.3 mm to 0.8 mm. The teeth are provided with a specific BU / pu 220166WO 10.April 2025 Distance from each other on at least one long side of the toothed rack. The tooth width describes the shortest distance between two protruding upper edges of the teeth. The upper edges of the teeth represent degrees that run parallel to the base line of the long side of the toothed rack. The length of the upper edges is the outer length (Za) of the tooth. The tooth height describes the shortest distance between the outwardly protruding degree (tooth surface) and the base line of the corresponding long side of the toothed plate on which the tooth is located. The tooth height (Zh), tooth width (Zb) and tooth width (Zw) are also shown in Fig. 4a. With this type of application agent, the sealing layer can be applied particularly finely. This makes it possible to achieve a particularly smooth surface for the wall and floor coating.In addition, rolling structures that can occur when applying the sealing layer with a roller can be effectively avoided by such an application agent. The invention also provides a coating composition producible by mixing at least one component A and one component B, characterized in that component A contains at least one polyol and at least one catalyst, and component B contains an aliphatic polyisocyanate with a viscosity, each determined at a temperature of 23 °C and a shear rate of 100 s. -1, from 250 mPa s to 1000 mPa s. What was said for components A and B of the kit of parts according to the invention also applies accordingly to the coating composition according to the invention. What was said for the mixing of components A and B of the process according to the invention also applies accordingly to the coating composition according to the invention. The invention further provides a wall and floor coating obtained or obtainable by the process according to the invention or the coating composition according to the invention. BU / pu 220166WO April 10, 2025 What was said for the kit of parts according to the invention, the process according to the invention and the coating composition according to the invention also applies to the wall and floor coating according to the invention. Such a wall and floor coating displays very good adhesion to the substrate surface.Furthermore, such a wall and floor coating can exhibit a variety of optical and haptic properties depending on the filler and / or pigment. Such a wall and floor coating exhibits high abrasion resistance, high water resistance or low water vapor permeability, and high flexibility, resulting in a smooth, easy-to-clean surface. At the same time, such a wall and floor coating does not tend to yellow. Preferably, the wall and floor coating according to the invention can consist of at least 40 wt.% or at least 45 wt.%, in particular at least 50 wt.%, preferably at least 55 wt.%, particularly preferably at least 60 wt.%, based on the total dry weight of the coating, from components of natural origin. Such a wall and floor coating is particularly resource-efficient and has a lower CO2 footprint compared to conventional wall and floor coatings.According to a particularly preferred embodiment of the wall and floor coating according to the invention, the cured wall and floor coating can have a diffusion resistance (sd value) of 1.0 m to 4.0 m, in particular of 1.5 m to 3.5 m or of 1.8 m to 3.3, preferably of 2.0 m to 3.0 m, at a thickness of 2 μm, measured according to DIN EN ISO 7783-2. The diffusion value indicates the water vapor permeability of a building material or coating material compared to a still layer of air. Such a wall and floor coating has high water resistance and low water vapor permeability and can provide excellent protection for the substrate against water and penetrating moisture. Furthermore, such a wall and floor coating is particularly suitable for use in rooms with increased humidity such as bathrooms and / or in wet rooms as a BU / pu 220166WO 10 April 2025 seamless wall and floor coating.A lower diffusion resistance, on the other hand, can lead to inadequate water resistance and thus to damage to the substrate or the building structure when exposed to water. According to a further preferred embodiment of the wall and floor coating according to the invention, the color of the wall and floor coating can be individually adjusted at the point of sale using color mixing systems. This makes it possible to provide a particularly customer-oriented wall and floor coating that enables individual and creative color design. What was said in connection with the method according to the invention and / or the wall and floor coating according to the invention for the kit of parts, component A and component B, also applies accordingly to the kit of parts according to the invention and the component A and component B comprised thereby. The wall and floor coating according to the invention is suitable for various uses.The invention further relates to the use of a wall and floor coating produced by a process according to the invention or a wall and floor coating according to the invention as a bathroom coating, in particular as a seamless bathroom coating. Such a use has the advantage that the wall and floor coating adheres well to the substrate to be coated. At the same time, the wall and floor coating exhibits low water vapor permeability. Such a wall and floor coating is flexible and / or does not tend to yellow. In addition, the wall and floor coating has a smooth, in particular a smooth and easy-to-clean, surface. In addition, the wall and floor coating exhibits high abrasion resistance. Such a wall and floor coating is therefore ideally suited for use in wet rooms.The principle of the invention will be explained in more detail below using examples which do not limit the subject matter of the invention. The figures show: Fig. 1a an application means for applying a coating compound with a trapezoidal tooth profile in a side view. Fig. 1b the application means of Fig. 1a in a perspective view. Fig. 2a an application means for applying a coating compound with a round tooth profile in a side view. Fig. 2b the application means of Fig. 2a in a perspective view. Fig. 3a an application means for applying a coating compound comprising a toothed rack and a receiving holder in a side view. Fig. 3b the application means of Fig. 3a in a perspective view. Fig. 4a an application means for applying a sealing layer comprising a toothed rack and a receiving holder in a side view. Fig. 4b the application means of Fig. 4a in a perspective view. Fig.1 shows an applicator 1 for applying a coating compound, in particular a coating compound for producing a wall and floor coating. The applicator 1 comprises a plate 2, wherein at least one long side 3 of the plate 2, in this case two long sides 3 of the plate 2, has a plurality of teeth 4, or tooth-shaped protruding regions. A particularly preferred variant of the applicator 1 provides, as mentioned, that the teeth 4 have a trapezoidal profile. The plate 2 is rectangular in shape in this case, but can also be triangular, square, trapezoidal, or have another geometric shape (not shown). Furthermore, the plate 2 has a handle 5 on its upper side. The applicator 1 differs from conventional applicators, mostly used in the prior art, which have a rectangular tooth profile.The plate 2 and the teeth 4 are preferably formed in one piece and can be made of metal, in particular aluminum, copper, brass, steel, sheet metal in general, or even suitable combinations of these types as a material mix. The plate can also be made of various types of plastic materials, for example, polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyurethane (PU), rubber, ethylene propylene diene rubber (EPDM), or ecological wood such as spruce, birch, beech, or woody grasses, such as bamboo or wood-polymer (plastic) composite (WPC), bamboo-polymer (plastic) composite (BPC). The handle 5 is preferably made of the materials listed above. The handle 5 and the plate 2 can have different compositions. It is also conceivable for the handle 5 to be composed of several of the above-mentioned materials or other materials.For example, the handle 5 can comprise wood and metal or plastic and metal. As can be seen further in Fig. 1a, the protruding teeth 4 have a regular arrangement, which, as can be seen particularly in the perspective view in Fig. 1b, has a specific tooth height (Zh), tooth width (Zw), tooth width (Zb), and tooth flank (Zf). It is understood that the number of teeth 4, as well as the tooth height (Zh), tooth width (Zw), tooth width (Zb), and tooth flank (Zf), can vary. Also, only one, three, or all four long sides 3 of the plate 2 can have a BU / pu 220166WO April 10, 2025 toothing. As can be seen from Fig. 1b, the handle 5 of the plate 2 is arranged centered between two long sides 3 of the plate 2. However, it is also conceivable for the handle 5 to be located on one long side 3, similar to the design of a commercially available spatula (not shown). The long side 3 with the handle 5 would accordingly have no teeth 4. Similar to Fig.1a, Fig. 2a shows an applicator 1 for applying a coating compound, in particular a coating compound for producing a wall and floor coating. The applicator 1 in Fig. 2a represents an alternative to the applicator from Fig. 1a and Fig. 1b. It also comprises a plate 2, wherein at least one long side 3 of the plate 2, in this case two long sides 3 of the plate 2, have a plurality of teeth 4, or tooth-shaped protruding areas. In contrast to the applicator 1 in Fig. 1a, the teeth 4 have a round profile. The further design is the same as the applicator 1 described in Fig. 1a. Fig. 2b shows a perspective view of the applicator 1 from Fig. 2a. The same embodiments apply as for the applicator 1 in Fig. 2a, with the difference that the teeth 4 have a round profile. Fig.3 shows a further application means 1 for applying a coating compound, in particular a coating compound for producing a wall and floor coating. The application means 1 comprises a rectangular toothed strip 6, wherein at least one long side 3 of the toothed strip 6 has a plurality of teeth 4, or tooth-shaped protruding areas, and a receiving holder 7. The toothed strip 6 is connected to the receiving holder 7 by frictional engagement, positive engagement, and / or by fastening means 8, such as rivets or screws. The toothed strip 6 can have a toothing or teeth 4 on one of its long sides 3 (6A). The toothed strip can also have a toothing 4 on both long sides 3 (6B). The teeth 4 preferably have a triangular profile. As can also be seen in Fig. 3a, the protruding BU / pu 220166WO April 10, 2025 teeth have a regular arrangement. The definition of the tooth height (Zh) is as shown in Fig.1b. It is understood that the tooth height (Zh) or length of the toothed rack 6 and the number of teeth 4 can vary. The toothed rack 6 and the teeth 4 are preferably formed in one piece and can be made of metal, in particular aluminum, copper, brass, steel, sheet metal in general, or even expedient combinations of these types as a material mix. The toothed rack 6 can also be made of various types of plastic materials, for example polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyurethane (PU), rubber, ethylene propylene diene rubber (EPDM), or ecological wood such as spruce, birch, beech, or woody grasses, such as bamboo or wood-polymer (plastic) composite (WPC), bamboo-polymer (plastic) composite (BPC). The same materials can be used for the mounting bracket 7.More preferably, the receiving holder 7 of the application means 1 comprises a receptacle (not shown) for a handle nozzle 9. It is also conceivable that the handle nozzle 9 is firmly connected to the receiving holder 7, as shown in Figure 3a. The handle nozzle 9 serves to receive a device handle (not shown). The device handle can have the same or a different material composition as the application means 7 or the toothed strip 6. It is also conceivable for the device handle to be composed of several of the above-mentioned materials or additional materials. For example, the device handle can comprise wood and metal or plastic and metal. As an alternative to a device handle, a handle 5 can be attached to the receiving holder 7 (not shown). As can be seen in Fig. 3b, the toothed strip 6 can be pushed into the receiving holder 7. This allows the toothed strips to be exchanged for different applications.3b, the toothed strip 6 is fastened to the receiving holder 7 by frictional engagement and by fastening means 8, such as screws or rivets. However, it is also conceivable for the toothed strip 6 to be held in the receiving holder 7 only by frictional engagement, positive engagement, or fastening means 8. Furthermore, it is possible for the toothed strip 6 BU / pu 220166WO April 10, 2025 and the receiving holder 7 to be non-detachably connected or to be formed as a single component. Fig. 4a shows an application means 1 for applying a sealing layer, in particular a sealing layer for producing a wall and floor coating. The application means 1 comprises a toothed strip 6 and a receiving holder 7. The toothed strip 6 is rectangular, with the longitudinal sides 3 representing the long sides of a rectangle. The toothed strip 6 can have teeth 4 or a tooth-shaped region on both longitudinal sides 3.It is also conceivable for the toothed strip 6 to have three teeth 4 on only one long side (not shown). Preferably, the toothed strip 6 has three teeth 4 on both long sides. The toothed strip 6 is connected to the receiving holder 7 by frictional engagement, positive engagement, and / or by fastening means 8, such as rivets or screws. The toothed strip 6 and the teeth 4 are preferably formed as a single piece. Furthermore, the application means 1 has a handle 5. The handle 5, the toothed strip 6, and the receiving holder 7 can be made of the same materials as those specified above for the receiving holder 7, the toothed strip 6, and the handle 5 of the application means 1 for applying a coating compound. As can also be seen in Fig. 4a, the tooth-shaped, protruding regions of the toothed strip 6 preferably have a special rectangular toothing, in which the spaces between the teeth are parabolic.The upper edges of the teeth run parallel to the base line of the toothed rack. Furthermore, the tooth-shaped protruding regions are defined by their tooth height (Zh), tooth width (Zw), and tooth width (Zb), as can be seen in Fig. 4a. It is understood that the number of teeth 4, as well as the tooth height (Zh), tooth width (Zw), and tooth width (Zb), can vary. As can be seen from Fig. 4b, the handle 5 of the application device 1 can represent a separate component. This can be connected to the receiving holder 7 of the application device 1 by frictional connection, positive connection BU / pu 220166WO April 10, 2025 and / or material connection. However, it is also conceivable for the receiving holder 7 and the handle 5 to be formed as a single piece (not shown).Working examples Example 1: A coating composition for producing a wall and floor coating was prepared by mixing the composition of component A shown in Table 1 and the composition of component B shown in Table 2. The amounts used relate in each case to the solids content or pure substance content of the components. Table 1: Composition of component A Component Amount [wt.%] Polyol of natural origin 51.00 Calcium carbonate, barium sulfate 32.68 Mica 5.00 Moisture binder 9.00 Rheology additives and defoamers 0.67 Catalyst 0.02 Solvent (hydrocarbons and 1.63 heterocyclic compounds) The above-mentioned raw materials were dispersed at room temperature and under normal pressure for 5 minutes using a laboratory dissolver at 1900 rpm. BU / pu 220166WO April 10, 2025 Table 2: Composition of component B Component Amount [wt.%]%] aliphatic polyisocyanate 100.00 The above-mentioned raw materials were dispersed at room temperature and under normal pressure for 5 minutes using a laboratory dissolver at 1900 rpm. Preparation of the coating compound To produce the wall and floor coating compound, components A and component B were mixed at room temperature in a mixing ratio of component A to component B of 3 to 1 by weight, based on the total weight of the mixture, and stirred for 2 minutes using a construction site stirrer and basket stirrer. A leveling coating was obtained as the coating compound. Preparation of a wall and floor coating: A mineral substrate was leveled with a 2-component epoxy resin-based filler and a drying time of 2-8 hours was observed. The wall and floor coating compound was then applied in a thick layer using a notched trowel as shown in Fig. 1 and Fig.2 was applied to the leveled substrate at room temperature (layer thickness of the wall surface approx. 0.3 to 0.6 mm, layer thickness of the floor surface approx. 2 mm). After a time window of 2-48 hours, a 2-component polyurethane coating was applied as a sealing layer in a layer thickness of 0.1 mm (wet) to the dried wall and floor coating. No intermediate sanding was required between the applications of the individual layers. The wall and floor coating compound exhibited excellent application properties. Spikes in the floor for ventilation were not necessary. The fully cured wall and floor coating also met all building physics-relevant parameters with regard to abrasion resistance, hardness, and flexibility (BU / pu 220166WO April 10, 2025) and exhibited a diffusion resistance (sd value) of 2 m at a thickness of 2 μm, measured according to DIN EN ISO 7783-2. BU / pu 220166WO April 10, 2025.

Claims

April 10, 2025 Patent claims 1. Kit of parts for producing a wall and floor coating, comprising a component A and a component B, wherein component A - at least one polyol and - at least one catalyst and wherein component B - an aliphatic polyisocyanate having a viscosity, in each case determined at a temperature of 23 °C and a shear rate of 100 s -1, from 250 mPa·s to 1000 mPa·s.

2. Kit of parts according to claim 1, characterized in that the at least one polyol in component A is a polyol of natural origin.

3. Kit of parts according to claim 1 or 2, characterized in that component A, in each case based on the total weight of component A, contains at least 50 wt.%, in particular at least 70 wt.%, preferably at least 80 wt.%, of constituents of natural origin.

4. Kit of parts according to one of the preceding claims, characterized in that component A, in each case based on the total weight of component A, contains 30 wt.% to 80 wt.%, in particular 35 wt.% to 75 wt.%, preferably 40 wt.% to 65 wt.%, particularly preferably 45 wt.% to 60 wt.%, of the at least one polyol. - 2 - 5. Kit of parts according to one of the preceding claims, characterized in that the at least one polyol in component A is a polyol having fewer than 6 hydroxyl groups, in particular having fewer than 5 hydroxyl groups, preferably having fewer than 4 hydroxyl groups.

6. Kit of parts according to one of the preceding claims, characterized in that the at least one polyol in component A has a hydroxyl number of 150 mg KOH / g to 260 mg KOH / g, in particular of 160 mg KOH / g to 240 mg KOH / g, preferably of 180 mg KOH / g to 230 mg KOH / g, particularly preferably of 190 mg KOH / g to 220 mg KOH / g.

7. Kit of parts according to one of the preceding claims, characterized in that the at least one polyol in component A is a polyhydroxy-functional fat and / or oil.Kit of parts according to one of the preceding claims, characterized in that the at least one polyol in component A is a polyhydroxy-functional fat and / or oil selected from the group consisting of linseed oil, tung oil, safflower oil, sunflower oil, coconut oil, rapeseed oil, peppermint oil, lavender oil, soybean oil, walnut oil, corn germ oil, tall oil, castor oil, cumin oil, flax oil, a modification of the listed fats and oils and / or a mixture thereof, in particular castor oil, soybean oil, rapeseed oil, sunflower oil and / or modified castor oil, modified soybean oil, modified rapeseed oil, modified sunflower oil and / or a mixture thereof.

9. Kit of parts according to one of the preceding claims, characterized in that component A, based in each case on the total weight of component A, contains 0.005 wt.% to 0.05 wt.%, in particular 0.008 wt.% to 0.04 wt.%, preferably 0.01 wt.% to 0.03 wt.%, particularly preferably 0.015 wt.% to 0.025 wt.%, of catalyst. BU / pu 220166WO 10.April 2025. - 3 - 10. Kit of parts according to one of the preceding claims, characterized in that the catalyst in component A is a tin catalyst, in particular an organotin compound, particularly preferably an organotin(IV) compound.

11. Kit of parts according to one of the preceding claims, characterized in that the catalyst in component A is a tin catalyst selected from the group consisting of dibutyltin dichloride, dioctyltin diacetylacetonate, bis(dodecylthio)dimethylstannane, bis(dodecylthio)dioctylstannane, dibutyltin diacetate, dibutyltin diacetylacetonate, dimethyltin dilaurate, and dioctyltin dicarboxylates.

12. Kit of parts according to one of the preceding claims, characterized in that the catalyst in component A is a tin catalyst selected from the group consisting of dioctyltin diacetate, dioctyltin dilaurate, bis[(2-ethyl-1-oxohexyl)oxy]dioctylstannane, and bis(neodecanoyloxy)dioctylstannane, in particular bis(neodecanoyloxy)dioctylstannane. 13.Kit of parts according to one of the preceding claims, characterized in that component A, in each case based on the total weight of component A, contains 0 wt.% to 20 wt.%, in particular 0.1 wt.% to 15 wt.%, preferably 0.2 wt.% to 10 wt.%, more preferably 0.5 wt.% to 8 wt.%, particularly preferably 2 wt.% to 6 wt.%, of alkyd resin.

14. Kit of parts according to one of the preceding claims, characterized in that component A, in each case based on the total weight of component A, contains - 30 wt.% to 80 wt.%, in particular 35 wt.% to 75 wt.%, preferably 40 wt.% to 65 wt.%, particularly preferably 45 wt.% to 60 wt.%, of the at least one polyol, BU / pu 220166WO April 10, 2025. - 4 - - Contains 0.005 wt.% to 0.05 wt.%, in particular 0.008 wt.% to 0.04 wt.%, preferably 0.01 wt.% to 0.03 wt.%, particularly preferably 0.015 wt.% to 0.025 wt.%, of catalyst.

15. Kit of parts according to one of the preceding claims, characterized in that component A, in each case based on the total weight of component A, contains 2 wt.% to 20 wt.%, in particular 4 wt.% to 18 wt.%, preferably 7 wt.% to 14 wt.%, more preferably 7 wt.% to 12 wt.%, of moisture binder.

16. Kit of parts according to claim 15, characterized in that the moisture binder in component A is molecular sieve.

17. Kit of parts according to one of the preceding claims, characterized in that component A, based in each case on the total weight of component A, contains 0.5 wt.% to 60 wt.%, in particular 5 wt.% to 55 wt.%, preferably 20 wt.% to 50 wt.%, more preferably 30 wt.% to 40 wt.%, of filler.Kit of parts according to claim 17, characterized in that the filler in component A is a filler selected from the group consisting of dolomite, barium sulfate, feldspar, quartz, calcium carbonate, mica, kaolin, calcined kaolin, talc, diatomaceous earth, and mixtures thereof, in particular barium sulfate, calcium carbonate, mica, or mixtures thereof.

19. Kit of parts according to claim 17 or 18, characterized in that the filler in component A comprises mica, in particular fluorphlogopite. BU / pu 220166WO April 10, 2025. - 5 - 20. Kit of parts according to one of the preceding claims, characterized in that component A contains 0 wt.% to 20 wt.%, in particular 0.01 wt.% to 15 wt.%, preferably 0.1 wt.% to 10 wt.%, more preferably 0.5 wt.% to 8 wt.%, in each case based on the total weight of component A, of pigment. 21.Kit of parts according to claim 20, characterized in that the pigment is an organic or inorganic pigment or a mixture thereof, in particular titanium dioxide, iron oxide yellow, arylide yellow, bismuth vanadate, diarylide yellow, an azo condensation pigment, pyranthone, isoindoline, anthraquinone, a derivative of dioxazine, perinone, a naphthol AS derivative, perylene, quinacridones, indanthrenes, phthalocyanines, rutile tin zinc, quinacridone, diketopyrrolopyrrole, iron oxide red, phthalocyanine blue, dioxazine, cobalt blue, ultramarine blue, phthalocyanine green, chromium oxide green, cobalt green, carbon black, iron oxide black, pyrazoloquinazolone, naphthol AS monoazo pigment, Pigment Violet 23 or a mixture thereof.

22. Kit of parts according to one of the preceding claims, characterized in that the color of the wall and floor coating can be adjusted at the point of sale using a color mixing system. 23.Kit of parts according to one of the preceding claims, characterized in that component A, based in each case on the total weight of component A, contains 0.01 wt.% to 5 wt.%, in particular 0.1 wt.% to 4 wt.%, preferably 0.2 wt.% to 3 wt.%, particularly preferably 0.3 wt.% to 2 wt.% of additives, in particular rheology additives, defoamers, dispersants, and / or extenders.

24. Kit of parts according to one of the preceding claims, characterized in that component A contains extenders, wherein the extender is in particular silica, more preferably pyrogenic silica. BU / pu 220166WO April 10, 2025. - 6 - 25. Kit of parts according to one of the preceding claims, characterized in that component A, in each case based on the total weight of component A, contains 0 wt.% to 10 wt.%, in particular 0.05 wt.% to 8 wt.%, preferably 0.1 wt.% to 5 wt.%, further preferably 0.5 wt.% to 3 wt.%, particularly preferably 1 wt.% to 2 wt.% of a secondary polyamine, in particular aspartic ester, preferably polyaspartic ester.

26. Kit of parts according to one of the preceding claims, characterized in that component B, in each case based on the total weight of component B, contains 60 wt.% to 100 wt.%, in particular 70 wt.% to 100 wt.%, preferably 80 wt.% to 100 wt.%, particularly preferably 90 wt.% to 100 wt.% of aliphatic polyisocyanate.

27. Kit of parts according to one of the preceding claims, characterized in that the aliphatic polyisocyanate in component B is a linear aliphatic polyisocyanate. 28.Kit of parts according to one of the preceding claims, characterized in that the aliphatic polyisocyanate in component B has an NCO content of 16% to 30%, in particular of 20% to 26%, particularly preferably of 22% to 25%, determined according to M105-ISO 11909.

29. Kit of parts according to one of the preceding claims, characterized in that the aliphatic polyisocyanate in component B is a polyisocyanate based on hexamethylene diisocyanate (HDI).

30. Kit of parts according to one of the preceding claims, characterized in that the aliphatic polyisocyanate in component B has a viscosity, in each case determined at a temperature of 23 °C and a shear rate of 100 s -1 , from 300 mPa s to 950 mPa s or from 300 mPa s to 880 mPa s, in particular from BU / pu 220166WO 10 April 2025 - 7 - 400 mPa s to 900 mPa s, preferably from 450 mPa s to 850 mPa s, more preferably from 550 to 830 mPa s.

31. A method for producing a wall and floor coating, comprising the steps: a) providing a substrate to which the wall and floor coating is applied, b) leveling the substrate provided in step a) with a suitable filler, c) mixing components A and B of the kit of parts according to one of claims 1 to 30, d) applying the mixture contained in step c) to the substrate prepared in step b), e) applying a sealing layer to the mixture applied in step d), wherein the application in steps d) and e) only takes place when at least the surface of the previously applied layer has dried. 32.Method according to claim 31, characterized in that the surface of the mixture applied in step d) is not sanded before application of the sealing layer in step e).

33. Method according to claim 31 or 32, characterized in that the suitable filler in step b) is a two-component epoxy resin-based filler.

34. Method according to claims 31 to 33, characterized in that the mixing in step c) is carried out in a mixing ratio of component A to component B, in each case based on the total weight of the mixture, of 1 to 1 parts by weight to 10 parts by weight, in particular of 1 to 1 BU / pu 220166WO April 10, 2025. - 8 - parts by weight up to 5 parts by weight, particularly preferably from 1.5 parts by weight to 3 parts by weight.

35. The method according to claims 31 to 34, characterized in that the mixture in step d) is applied with a thickness of 300 μm to 600 μm for a wall coating and / or a thickness of 1000 to 3000 μm for a floor coating.

36. The method according to claims 31 to 35, characterized in that the mixture in step d) is applied to the substrate using an application agent (1) which comprises a plate (2), wherein at least one longitudinal side (3) of the plate (2) comprises a plurality of teeth or tooth-shaped protruding regions (4) which have a triangular, rectangular, round or trapezoidal, in particular a trapezoidal, profile. 37.Method according to claim 36, characterized in that the application means (1) is a notched trowel, in particular a notched trowel with trapezoidal teeth, in which the outwardly projecting sides of the teeth (4) have a pointed profile.

38. Method according to claims 31 to 37, characterized in that the sealing layer in step e) is a transparent 2-component polyurethane composition.

39. Method according to claims 31 to 38, characterized in that a time window of 2 to 48 hours is maintained between steps b), d), and e).

40. Coating composition, producible by mixing at least one component A and one component B, characterized in that component A contains at least one polyol and at least one catalyst and the BU / pu 220166WO April 10, 2025. - 9 - Component B is an aliphatic polyisocyanate with a viscosity, determined at a temperature of 23 °C and a shear rate of 100 s -1, from 250 mPa·s to 1000 mPa·s.

41. Coating composition according to claim 40, characterized in that component A and / or component B is as defined in any one of claims 2 to 30.

42. Coating composition according to claim 40 or 41, characterized in that mixing is carried out as in claim 34.

43. Wall and floor coating obtained or obtainable by a process according to claims 31 to 39 or from a coating composition according to claims 40 to 42.

44. Wall and floor coating according to claim 43, characterized in that the wall and floor coating consists of at least 40 wt.%, in particular at least 50 wt.%, preferably at least 60 wt.%, of components of natural origin. 45.Wall and floor coating according to claim 43 or 44, characterized in that the cured wall and floor coating has a diffusion resistance (sd value) of 1.0 m to 4.0 m, in particular of 1.5 m to 3.5 m, preferably of 2.0 m to 3.0 m, at a thickness of 2 μm, measured according to DIN EN ISO 7783-2.

46. Wall and floor coating according to claims 43 to 45, characterized in that the color of the wall and floor coating can be individually adjusted at the point of sale using color mixing systems.

47. Use of a wall and floor coating produced by a process according to claims 31 to 39, a coating composition according to claim 40 BU / pu 220166WO April 10, 2025. - 10 - to 42 or a wall and floor coating according to claims 43 to 46 as a bath coating, in particular as a seamless bath coating. BU / pu 220166WO 10 April 2025

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