FLOOR ADHESIVE FOR MULTIFUNCTIONAL USE

Description

1 FLOOR ADHESIVE FOR MULTIFUNCTIONAL USE TECHNICAL DOMAIN The invention relates to an adhesive, more specifically an adhesive for bonding a floor covering. STANDARD OF TECHNOLOGY The standard of technology in the field of floor adhesives has a number of limitations that can lead to significant challenges in practice during the installation of floor coverings. A major problem is the lack of universality of many floor adhesives. Existing products are often specifically designed for a particular type of substrate, such as absorbent substrates (concrete, wood) or non-absorbent surfaces (tiles, metal). This creates the need to keep several types of adhesive in stock and to make the right choice for each project. This not only increases costs and logistical complexity, but can also lead to errors if an adhesive is used that is not optimally suitable for a particular substrate. In addition, many existing floor adhesives are not compatible with a wide range of floor coverings. Some adhesives work well with elastic materials such as PVC or rubber,but perform less well with hard coverings such as laminate or ceramic tiles. This limitation can lead to adhesion problems, such as insufficient strength or premature failure of the bond, especially in situations where the floor is exposed to mechanical stress or thermal expansion.25 Another problem in current technology is sensitivity to environmental conditions. Many floor adhesives are highly dependent on specific application conditions, such as temperatures and relative humidity, to deliver optimal performance. This can complicate installation in rooms with varying climatic conditions or in projects where strict time schedules are required. Moreover, an insufficiently adjusted open time can lead to problems during installation,such as premature curing of the adhesive or insufficient bonding. 35 The durability and environmental friendliness of existing floor adhesives also often leave much to be desired. Some formulations contain volatile organic compounds (VOCs) BE2025 / 5076 2 in concentrations that do not comply with current stricter regulations or that cause a negative effect on indoor air quality. This can be particularly problematic in sensitive environments such as homes, schools and hospitals. 5 The present invention aims to find a solution for at least some of the above-mentioned problems. SUMMARY OF THE INVENTION 10 The invention concerns an adhesive for bonding floors in accordance with claim 1. The adhesive is universal in use and can be used for bonding a wide range of floor coverings and to various substrates. Furthermore, the open time of the adhesive has been optimized to improve the use of the adhesive. Further preferred forms are described in claims 2 to 10. 15 In a second and third aspect, the invention concerns a method of use of the adhesive in accordance with claims 11 to 13,and a kit according to claims 14 and 15. DETAILED DESCRIPTION20 In a first aspect, the present invention concerns an adhesive for bonding floor coverings. This adhesive comprises, among others, one or more adhesion promoters, comprising a triethylene glycol esterified rosin resin, in a concentration between 10 wt% and 30 wt%, one or more adhesion promoters,25 comprising an acrylonitrile copolymer, in a concentration between 20 wt% and 50 wt%, and one or more open time extenders in a concentration between 1 wt% and 5 wt%. When applied to a substrate in a thickness of 0.1 mm to 2 mm, the floor adhesive has an open time at 23°C and 50% relative humidity between 30 minutes and 60 minutes, measured in accordance with EN14293.30 Floor adhesive is an essential component in the installation of floor coverings and plays an important role in ensuring a durable bond between the floor covering and the substrate. These adhesives are developed to function effectively under various conditions,where their mechanical and chemical properties contribute to a strong and long-lasting bond. The choice of a suitable floor adhesive depends on various factors, such as the type of floor covering, the nature of the substrates and the specific usage requirements, including load conditions and exposure to moisture or temperature variations. Floor adhesives must withstand environmental factors such as temperature fluctuations and mechanical stress from daily use. This requires a composition that not only offers an optimal balance between strength and flexibility, but also guarantees long-term stability, even under challenging conditions. By combining such properties, floor adhesives can significantly improve the reliability and lifespan of floor covering systems. Furthermore, the composition of the adhesive plays an important role in processing efficiency,where simple application and rapid curing are essential for cost-effective installation. The present invention focuses on addressing existing limitations of conventional floor adhesives, with the aim of offering improved performance and a wider range of applications. A particular feature of the presented adhesive is its versatility, making it suitable for a wide range of floor coverings and substrates. In one formulation, the composition includes adhesion promoters. These substances are added to improve the initial and long-lasting adhesion of the adhesive to both the floor covering and the substrate. They act as a bridge between the adhesive and the materials being bonded, especially in situations where surfaces differ significantly from each other in terms of chemical composition or physical properties. As a result, adhesion promoters not only increase the strength of the bond,but they also contribute to the durability and stability of the adhesion under various operating conditions. In floor adhesives, adhesion promoters are specifically used to address challenges such as porous substrates, smooth surfaces, or the presence of contaminants that can impair adhesion. They work by improving the wetting of the substrate, allowing the adhesive to spread better and create a larger contact surface. Furthermore, they promote chemical interaction between the adhesive and the surfaces, such as the formation of covalent bonds, hydrogen bonds, or Van der Waals forces. This ensures stronger and more uniform adhesion. BE2025 / 5076 4 Various chemical substances can serve as adhesion promoters, depending on the specific application and the type of adhesive. A widely used category are resins, such as rosin (resin from pine trees) and derivatives thereof, for example triethylene glycol-esterified rosin resin. These resins offer excellent adhesion to diverse substrates and improved adhesive strength,especially for floors with smooth or low-energy surfaces such as PVC or linoleum. Other commonly used substances are functional polymers, such as acrylates, polyurethanes and silicon-containing compounds. These substances combine chemical flexibility with strength, making them suitable for various substrates and loads.10 In a form, the adhesion promoters are selected from the group of, but not limited to, rosin, triethylene glycol-esterified rosin resin, polyvinyl alcohol, polyvinylpyrrolidone, polymethacrylate, acrylates, acrylonitrile copolymer, polymethyl methacrylate, epoxy resins, urethane resins,15 silicone compounds, silane coupling agents, siloxanes, aluminium salts, zinc salts, calcium salts, titanates, zirconates, acetoacetates, maleic acid copolymers, butyl acrylate, styrene acrylate copolymers, polycarbonate, polyamide, polyurethane, hydroxyl-terminated polybutadiene, glycidyl methacrylate, polyether polyols, phenolic resins, resorcin resins, ethylcellulose, methylcellulose, 20 carboxymethylcellulose,polydimethylsiloxane, aliphatic isocyanates, aromatic isocyanates, polyfunctional acrylates, polyfunctional methacrylates, phenylenediamine, dodecylbenzenesulfonic acid, acetoacetate polymers, epoxy functional silanes, enamine compounds, oxazolidine resins and / or combinations thereof. Preferably, the composition comprises at least triethylene glycol-esterified 25% rosin resin. The composition comprises one or more adhesion promoters in a concentration between 5 wt% and 50 wt%, more preferably between 10 wt% and 40 wt%, even more preferably between 10 wt% and 30 wt%. Furthermore, the composition includes, according to a form of application, adhesion promoters, 30 chemical substances that are added to adhesives to improve the adhesion between the adhesive and the surface to be bonded. They play a role in increasing the bond strength, especially when bonding difficult-to-bond materials, such as certain plastics, metals, or other non-porous surfaces. Adhesion promoters work by promoting interactions between the adhesive and the 35 surface,whereby the adhesive is better able to bond and form a durable bond. BE2025 / 5076 5 The action of adhesion promoters is based on their ability to create a chemical or physical bond between the adhesives and the surface. This can be achieved, for example, by improving the wetting, which means that the adhesive spreads better over the surface, resulting in a larger contact area. Adhesion promoters can also lower the surface tension of the material, making it easier for the adhesive to bond. In addition, through chemical reactions, they can ensure the formation of stronger, more durable bonds between the molecules of the adhesives and the surface, such as covalent or ionic bonds.10 In a specific form, the adhesion promoters are selected from the group of, but not limited to, silane coupling agents, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, vinyltriethoxysilane,3-aminopropyltrimethoxysilane,3-15 glycidoxypropyltrimethoxysilane,trimethoxyvinylsilane,butyltriethoxysilane,octyltriethoxysilane,polydimethylsiloxane,polymethyl methacrylate,acrylonitrile copolymer,polyvinylpyrrolidone,polyurethane, polyamide, polymaleic acid, polyvinyl alcohol, polyethylene glycol,epoxy groups,methacrylate groups, acrylic acid derivatives,polyisocyanates,aliphatic isocyanates, aromatic isocyanates, diamines, dodecylbenzenesulfonic acid, phosphoric acid derivatives, phenylenediamine,carboxymethylcellulose,N-vinylpyrrolidone,polycarbonate, polymethylsiloxane, hexamethyldisiloxane, polyether polyols, resorcinol resins, glycidyl methacrylate, dodecyltrichlorosilane, methacrylate functionalized polyethylene, trimethylsilane, urethane resins, epoxy functional silanes, aliphatic polyurethane, perfluoroalkylsilanes, and / or combinations thereof. In a preferred form the composition comprises at least acrylonitrile copolymer. In a formulation form, the composition comprises one or more adhesion promoters in an amount between 10 wt% and 50 wt%,preferably between 20 wt% and 50 wt%. 30 Acrylonitrile copolymer is a widely used adhesion promoter that is added to adhesives to improve adhesion, especially when bonding plastics and other difficult-to-bond surfaces. Acrylonitrile copolymer is a type of polymer obtained by the polymerization of acrylonitrile together with other monomers, such as butadiene or styrene. Due to the copolymer structure35, the properties of the polymer can be modified to achieve better adhesion to a wide range of materials. BE2025 / 5076 6 The addition of acrylonitrile to a copolymer provides increased polarity, which helps improve adhesion to polar substrates such as metals, glass, and certain plastics. The polarity of acrylonitrile copolymer ensures that it interacts easily with the molecules on the surface of the material to be bonded, creating strong adhesive forces. This makes acrylonitrile copolymer particularly effective for applications where strong adhesion is required,such as in the automotive industry or when bonding different layers of plastic materials. 10 In addition, acrylonitrile copolymers offer several important mechanical advantages for bonding. The presence of acrylonitrile increases the chemical resistance and durability of the adhesive bond, which is important in applications exposed to environmental factors such as moisture, temperature variations, and chemicals. Acrylonitrile copolymer can also contribute to the flexibility of the adhesive, which is essential for applications where the substrate may expand or contract, such as in floor coverings or outdoor environments. The copolymer can be further customized by varying the ratio of acrylonitrile to other monomers, depending on the specific requirements of the application. For example, a higher acrylonitrile content increases the polarity and bond strength,while a higher butadiene content can ensure improved flexibility and shock resistance. The choice of other monomers in the copolymer therefore influences the final performance of the adhesion promoter, which can be tailored to the specific properties of the materials to be bonded. In one form, the adhesive includes one or more open time extenders (OTE). The open time of the adhesive is the period during which the adhesive can be worked on or brought into contact with another material after application to a surface before the adhesive begins to cure or loses its adhesive strength. During this time, the adhesive is still tacky and the user can position, shift, or adjust the object to be bonded without loss of adhesion. The open time is important for many applications because it increases work efficiency and flexibility, especially in complex or time-consuming installations such as floors, tiles, or during the dismantling of large surfaces. BE2025 / 5076 7 The open time of an adhesive is influenced by various factors, including the composition of the adhesive,the environmental conditions such as temperature and humidity, and the nature of the material to be bonded. A longer open time offers the benefits of increased working time flexibility, but can also slow down the curing rate, which is undesirable for applications that need to be finished quickly. Therefore, it is important to match the open time of the adhesive well to the specific requirements of the application. Open time extenders (OTEs) are substances that are added to adhesives to extend the open time. These extenders slow down the curing process of the adhesive without compromising the final strength or performance of the bond. OTEs play a role in adhesives that must be used in conditions where more time is needed for applying or adjusting the bonded materials. They make it possible to work the adhesive more easily,especially for large surfaces or when working with materials that are difficult to position.15 The action of open-time extenders is based on their ability to slow down the rate of the chemical reactions that contribute to the curing process. In many cases, the curing of the adhesive depends on the reaction between the active components in the adhesive, such as the polymers and crosslinkers. Open-time extenders20 ensure that these reactions proceed in a controlled manner, allowing the adhesive to retain its tack longer before the curing process begins. This is particularly useful in applications where the adhesive is exposed to air or where conditions such as temperature and humidity vary. 25 There are different types of open-time extenders, depending on the type of adhesive and the desired performance. Commonly used OTEs are solvents such as water, glycols, alcohols, or other thinners that reduce the viscosity of the adhesive and simultaneously slow down the evaporation of volatile substances. In addition, certain polymers and additives, such as plasticizers, canare used to extend the open time. These substances reduce the setting of the adhesive, so that the user has more time for positioning or adjusting the objects to be bonded. In a formulation, the OTEs are selected from the group of, but not limited to, water, ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, glycerol, isopropyl alcohol, methanol, ethanol, butanol, pentanol, BE2025 / 5076 8 hexanol, octanol, dimethylformamide, acetone, tetrahydrofuran, dimethyl sulfoxide, 1,4-dioxane, ethyl acetate, n-butyl acetate, toluene, xylene, cyclohexan, N-methyl-2-pyrrolidone, glycol ether, polyethylene glycol, polypropylene glycol, plasticizers (such as dioctyl phthalate), polyvinyl alcohol, polyacrylate, cellulose derivatives, siloxanes, polyurethane, polyethylene glycol dimethyl ether. In a formulation, the OTEs are present at a concentration between 0 wt% and 10 wt%, preferably between 1 wt%en7wt%,even more preferably between 1 wt% and 5 wt%. In a formulation, the adhesive has an open time at 23°C and 50% relative humidity between 10 minutes and 100 minutes, more preferably between 2010 minutes and 80 minutes, and even more preferably between 30 minutes and 60 minutes. The open time is measured in accordance with EN923, which provides a standardized method for determining the time during which an adhesive retains its adhesive strength after application to a surface. EN923 specifies the test conditions, in which a controlled temperature of 23°C and a relative humidity of 50% are maintained, so that the open time can be determined under standardized and reproducible conditions. This ensures that the measured open time is comparable with other products undergoing the same test, which guarantees the consistency and reliability of the results. 20 During the test, the adhesive is applied to a specific substrate, and the moment at which the adhesive loses its ability to hold an object (or in other words, when the adhesive is no longer effective for bonding a surface),is documented. The open time plays a crucial role in the user-friendliness of the adhesive, as it determines the amount of time the user has to position or adjust materials before the adhesive begins to cure. An open time between 30 and 60 minutes offers sufficient leeway for working with larger surfaces or bonding objects that are more difficult to position, without the adhesive losing its effectiveness. 30 In a formulation, the adhesive has a volatile organic compound (VOC) emission between 0 g / L and 100 g / L, preferably between 0 g / L and 50 g / L. VOCs are organic substances that evaporate quickly at room temperature and often contribute to air pollution and harmful health impacts, such as respiratory problems or skin irritations. Limiting VOC emissions in adhesives is 35 of great importance, especially in applications where adhesive is used in indoor environments, such as in flooring,wall coverings or furniture. Adhesives with BE2025 / 5076 9 lower VOC emissions help to improve indoor air quality and often meet stricter regulations and environmental standards, such as those laid down in European standards and legislation, including European Regulation 2004 / 42 / EC, which sets limit values ​​for the emission of VOCs in paint and adhesive products.5 A VOC emission between 0g / L and 50g / L is considered very low and is desirable for applications where environmental friendliness and health are a priority. Limiting VOC emissions can contribute to a safer working environment for the user and healthier indoor air quality for residents or employees. This is of particular importance in enclosed spaces where ventilation may be limited, such as during renovations or the installation of floor coverings in homes, schools, hospitals and other public buildings. The VOC is measured with the microchamber test or small chamber test,This is performed in accordance with the standardized standard ISO 16000-9. In this test, the concentration of volatile organic compounds released by a sample of the product is measured in a controlled environment. The process begins with applying a representative sample of the adhesive to a test substrate or in a form suitable for the test chamber. The sample is then cured under controlled conditions at 23°C and 50% relative humidity to ensure that the product is in a representative state. After curing, the sample is placed in a small, hermetically sealed measuring chamber, where temperatures and humidity are closely controlled to ensure consistent test conditions. In the chamber, air is ventilated through the sample to simulate the emission of VOCs. The air in the measuring chamber is continuously monitored for the concentrations of volatile organic compounds released from the sample.What can be done using detection methods such as gas chromatography (GC) coupled to mass spectrometry (MS), or photometric detection. These techniques enable researchers to detect the specific types and concentrations of VOCs in the air. In one form, the adhesive comprises glycerin, a polyol that plays a role in the composition of adhesives. The adhesive can contain glycerin in an amount between BE2025 / 5076 10 0wt% and 10wt%, more preferably between 0wt% and 7wt%, even more preferably between 0wt% and 5wt%, even more preferably between 0wt% and 3wt%, most preferably between 0wt% and 1wt%. Glycerin, also known as glycerol, is a colorless, odorless, and viscous liquid that occurs naturally in fats and oils. It is added to the adhesive composition because of its hygroscopic properties, which means that it is able to attract and retain water. This helps improve the flexibility and bonding capacity of the adhesive.especially when it is exposed to fluctuating humidity conditions. Glycerin contributes to the stability of the adhesive because it can lower the viscosity, making the application of the adhesive easier, especially on larger surfaces or in applications that require an even distribution. In addition to its influence on viscosity, glycerin also plays a role in extending the open time of the adhesive. The open time, which is the period during which the adhesive can be adjusted or repositioned before it begins to cure, is often influenced by the use of glycerin. This is because glycerin slows down the evaporation of solvents or water in the adhesive, allowing the adhesive to remain workable longer before it cures. This can be important in applications where the user needs sufficient time to correctly position the materials before the adhesive begins to bond. Furthermore, glycerin can improve the durability of the glue due to its role as a plasticizer. It prevents the glue from drying out or becoming brittle too quickly.resulting in the final product exhibiting a higher degree of elasticity and tear resistance.25 This makes the adhesive more suitable for applications that require a certain degree of movement or deformation, such as floors subject to loads or temperature changes. Glycerin can also contribute to the environmental friendliness of the adhesive. Because it is a relatively mild substance and is derived from renewable sources, it can reduce the ecological footprint of adhesive production compared to other, more harmful additives. Furthermore, glycerin has the benefits of low volatility, which means that it can reduce the emission of volatile organic compounds (VOCs) into the air, which is beneficial for air quality, especially in indoor environments. BE2025 / 5076 11 In a formulation, the adhesive contains a mixture of fungicides at a concentration between 0.1 wt% and 1 wt%, preferably between 0.1 wt% and 0.7 wt%, and even more preferably between 0.1 wt% and 0.5 wt%. Fungicides are chemical substances that prevent or reduce the growth of fungi,This is important in applications where the adhesive is exposed to damp or humid environments. Molds5 can not only attack the adhesive itself, but can also damage the surfaces on which the adhesive is applied, such as floors or wall coverings. By including fungicides in the composition of the adhesive, the integrity of the adhesive and the surfaces connected to it can be maintained for a longer period of time. 10 The choice of fungicide type and the concentration of the mixture are important to strike a balance between effectiveness and safety. Fungicides must be strong enough to inhibit mold growth, but at the same time they must meet health and safety standards for the user. Some fungicides can cause irritation upon contact with the skin or inhalation,Therefore, the use of these substances must be carefully regulated to comply with applicable legislation and to ensure the safety of the end user. An advantage of using a mixture of fungicides in the glue is that it increases the likelihood that the glue will be effective against different types of fungi.20 Fungi vary greatly in their structure and the way they reproduce, so a combination of different active ingredients can offer broader protection than a single fungicide. This makes the glue more resistant to a wide range of fungal species, from common house molds to more resistant species that can grow in damp or outdoor environments.25 In a formulation, the fungicides are selected from the group of, but not limited to, 1,2-benzisothiazol-3(2H)-one, methylisothiazolinone, octylisothiazolinone, methylchloroisothiazolinone, 2-methyl-4-isothiazolin-3-one, 5- chloro-2-methyl-2H-isothiazole-3-one,5-chloro-2-methyl-4-isothiazolin-3-one,2-30 ethyl-2-methyl-4-isothiazolin-3-one,4,5-dichloro-2-methyl-4-isothiazolin-3-one,2- methyl-2H-isothiazole-3-one,4-isothiazolin-3-one,2,5-dimethyl-4-isothiazolin-3- one,1,2-dimethyl-3(2H)-thiazole,koperzouten,zilverzouten,thiabendazole, propiconazool,iprodion,tebuconazool,clotrimazol,ketoconazol,fenthion, carbendazim,benomyl,myclobutanil,pyraclostrobin,fludioxonil,dichlofluanide,35 dodecylbenzenesulfonzuur,methylisothiazolinon,chlorothalonil,azoxystrobin, cyproconazole,epoxiconazole,hexaconazole,triazole,azoxystrobin,metconazole, BE2025 / 5076 12 pentachloorfenol,bitertanol,andenilconazole.Ineenvoorkeursvormomvatdelijm minstensdefungiciden1,2-benzisothiazole-3(2H)-one,5-chloro-2-methyl-2H- isothiazole-3-oneen2-methyl-2H-isothiazole-3-oneineenverhouding100:1:1. Ineenuitvoeringsvormomvatdelijmnatriumpolyacyrlaatineenconcentratietussen5 0wt%en10wt%,meerbijvoorkeurtussen0wt%en7wt%,nogmeerbijvoorkeur tussen0wt%en5wt%,nogmeerbijvoorkeurtussen0wt%en3wt%,most preferably between 0 wt% and 1 wt%. Sodium polyacrylate is a water-soluble polymer used in various applications, including adhesives, due to its versatile properties. It is known for its excellent water-absorbing ability and its ability to form viscous solutions. In adhesive formulations, sodium polyacrylate primarily acts as a thickener, stabilizer, and water retention agent, which contributes to the improved performance of the adhesive. One of the most important functions of sodium polyacrylate in adhesives is improving viscosity, which is essential for applying the adhesive to surfaces. It ensures that the adhesive can be easily applied to the substrate without flowing or drying out quickly, which increases control and precision during application. This makes it particularly useful in applications where a thicker or more viscous product is required, such as in the bonding of floor coverings.wall coverings or other materials that require a longer processing time. In addition, sodium polyacrylate plays an important role in retaining water in the adhesive formulation. This is advantageous in situations where the adhesive is used on porous materials, such as wood or concrete, which can absorb moisture quickly. The water is retained by the polymer, allowing the adhesive to remain moist for a longer period and offering a longer open time. This makes it possible to position and adjust the materials to be bonded for a longer time before the adhesive starts to bond, which significantly improves workability. Sodium polyacrylate also offers benefits in terms of the durability of the adhesive. It increases the stability of the adhesive formulation by reducing the tendency of the other ingredients to separate or dry out. It helps keep the adhesive flexible and uniform throughout the entire product lifespan, ensuring that performance is maintained even under varying environmental conditions.such as changes in temperature or humidity. BE2025 / 5076 13 In a formulation, the adhesive composition comprises a mixture of calcium and magnesium carbonate, which play a joint role in the formulation of the adhesive. These carbonates are often added as fillers, which contribute to both the mechanical properties and the workability of the adhesive. They offer not only structural benefits, but can also help reduce formulation costs by replacing more expensive reactive components. Calcium carbonate, a widely used filler in adhesives, ensures increased density and consistency in the adhesive. It contributes to better stability and prevents the adhesive from becoming too fluid during storage or processing. Furthermore, calcium carbonate improves adhesion properties on certain substrates, such as concrete, gypsum or other porous materials, due to its compatibility with alkaline surfaces. 15 Magnesium carbonate offers additional benefits due to its specific properties. It is known for its ability to regulate moisture,which is important in adhesive systems that are exposed to fluctuating humidity conditions. Magnesium carbonate can act as a buffer against moisture, making the adhesive less susceptible to pre-drying or excessive moisture absorption during and after application. This contributes to long-lasting adhesion and prevents the adhesive from losing its strength in humid environments. The mixture of calcium and magnesium carbonate offers synergistic effects. Together, these components improve the ecological properties of the adhesive, such as viscosity and spreadability, allowing the adhesive to be applied more easily and consistently. In addition, the mixture contributes to improved durability because it helps to stabilize the adhesive and make it resistant to temperature fluctuations and mechanical loads. In a formulation, the adhesive comprises a mixture of calcium and magnesium carbonate with a purity of at least 95%, preferably at least 99%.where the calcium oxide content amounts to 30 to 35% and the magnesium oxide content to 20 to 30%. The glue may comprise the mixture in a concentration between 10 wt% and 90 wt%, more preferably between 20 wt% and 80 wt%, more preferably between 30 wt% and 70 wt%, even more preferably between 30 wt% and 60 wt%, even more preferably between 30 wt% and 50 wt%, most preferably between 30 wt% and 40 wt%. In one formulation, the adhesive comprises a surfactant, a surface tension-reducing substance that plays a crucial role in improving the performance and properties of the adhesive. Surfactants, also known as surface-active agents, are molecules with both hydrophilic (water-attracting) and hydrophobic (water-repellent) properties. This allows them to optimize the interaction between the various components in the adhesive composition.which leads to better functionality and consistency of the final product. One of the most important functions of a surfactant in an adhesive is improving the wetting properties. When applying the adhesive to a substrate, the surfactant helps to spread the adhesive evenly and penetrate deep into porous or irregular surfaces. This improves adhesion by increasing the contact surface between the adhesive and the substrate. Surfactants are particularly useful for applications on substrates that are difficult to wet, such as plastic, metal, or water-repellent coatings. Additionally, surfactants can act as emulsifiers in water-based adhesives. A stabilizing dispersion of hydrophobic and hydrophilic components, ensuring the composition remains homogeneous during storage and use. Without surfactants, these components would tend to separate, which would reduce the quality and performance of the adhesive. By increasing stability, surfactants ensure that the adhesive performs consistently.regardless of the circumstances. Surfactants also play a role in improving the thermal properties of the adhesive. By influencing the viscosity and flow properties, they make the adhesive easier to apply, without the paste becoming too thin or too thick. This is particularly important in applications where a controlled and uniform application is required, such as with floor coverings or wall panels. Furthermore, surfactants can contribute to the open time of the adhesive, the period during which the adhesive retains its bonding strength before it begins to cure. This occurs because surfactants slow down the evaporation of water or solvents in the adhesive, which facilitates the workability and positioning of the materials. As a result, BE2025 / 5076 15 offers the adhesive more flexibility during installation processes, especially in large or complex projects. In one embodiment, the surfactant is selected from the group of, but not limited to, sodium dodecyl sulfate, sodium laureth sulfate, sodium lauryl sulfate, 5 alkylbenzenesulfonate, cetyltrimethylammonium bromide, stearyltrimethylammonium chloride,polyoxyethylenesorbitanmonooleate(Tween 80),polyoxyethylenesorbitanmonolaurate(Tween20),sorbitanmonostearate (Span60),sodiumsaltofamaleicanhydridecopolymer,sorbitanmonooleate(Span 80),dioctylsodiumsulfosuccinate,cetylalcoholethoxylate,laurylalcoholethoxylate,10 octylphenolethoxylate,nonylphenolethoxylate,polyethyleneglycolmonostearate, polyethyleneglycoldistearate,laurylglucoside,decylglucoside,cocoglucoside, caprylylglycol,isopropylmyristate,isopropylpalmitate,methylestersulfonate,fatty acidmethylesters,sodiumalkylethoxysulfate,sodiumcocoylisethionate,alkyl polyglucosides,fattyalcoholethoxylates,cetylbetaine,cocamidopropylbetaine,15 stearamidopropylbetaine,lauramidopropylbetaine,dimethyldodecylamineoxide, cocoamineoxide,stearylamineoxide,ethoxylatedcastoroil,ethoxylatedtallow amine,lecithin,poloxamers,alkylpolyglycosides,polyethyleneglycolethers, trimethylolpropaneethoxylates,fattyacidethoxylates,methylglucosedioleate, ethoxylatedlanolinalcohols,alkylsulfate esters. In a preferred form, the adhesive comprises at least sodium saltofamaleicanhydride copolymer, in a concentration between 0wt% and 5wt%, more preferably between 0wt% and 4wt%, even more preferably between 0wt% and 3wt%, even more preferably between 0wt% and 2wt%, most preferably between 0wt% and 1wt%. 25 In a formulation, the adhesive contains sodium hydroxide (NaOH), in a concentration carefully tuned to maintain a pH value between 7 and 10, preferably between 7 and 9, or preferably between 7 and 8. Sodium hydroxide, a strong base, is added to regulate the pH of the adhesive composition, which is essential for optimizing the performance and stability of the adhesive. 30 A pH in this specific range contributes to a balanced chemical environment, in which the various components of the adhesive can function effectively without unwanted reactions or degradation. A pH between 7 and 8 is slightly alkaline and offers several advantages in adhesive systems. 35 Firstly, it prevents an overly acidic environment that certain components, such as polymers or fillers,could affect. This is especially important for adhesives BE2025 / 5076 16 that require long-term stability, such as floor adhesives that are exposed to varying environmental conditions for extended periods. A slightly alkaline pH also helps to minimize corrosion of metal substrates, which is important in applications where the adhesive is in direct contact with metal surfaces. 5 The NaOH concentration is precisely determined to achieve a precise pH balance, without the adhesive becoming too corrosive or the mechanical properties of the composition being negatively affected. A carefully controlled amount of NaOH prevents, for example, the adhesive from curing too quickly, which can reduce workability, or from limiting the open time, which is crucial10 for correct placement and positioning of the floor covering. In addition, sodium hydroxide can play a role in activating specific chemical reactions in the adhesive composition. It can accelerate or decelerate the reaction kinetics of crosslinkers or other chemical additives.depending on the formulation. This makes NaOH not only a pH regulator, but also a potential co-factor in optimizing the adhesive strength and durability of the glue. An additional advantage of a pH between 7 and 8 is compatibility with human exposure and application conditions. Adhesives with a neutral to slightly alkaline pH are generally less irritating to the skin and eyes, which increases safety and ease of use during the installation of floor coverings. In a formulation, the adhesive has a density between 1 g / ml and 1.5 g / ml, a parameter that is carefully tuned to optimize both the workability and the performance properties of the adhesive. The density of an adhesive plays an important role in various aspects of use and application, including the way the adhesive spreads, bonds, and cures. 30 A density in this range offers a balance between fluidity and viscosity, which plays a role in even application. At a density around 1 g / ml, the adhesive is slightly easy to apply, whereas a higher density,towards 1.5 g / ml, ensures a more substantial and strong adhesive layer suitable for applications where extra adhesion and stability are required. This makes the adhesive suitable35 for a wide range of floor coverings, from lightweight materials such as vinyl and linoleum to heavier and more rigid options such as ceramic tiles or natural stone. BE2025 / 5076 17 The density also influences the consumption quantity of the adhesive. A higher density can mean that less adhesive per square meter is needed to achieve adequate adhesion, which promotes cost efficiency and material savings. At the same time, a well-chosen density contributes to the mechanical5 performance of the adhesive, such as bond strength and resistance to shear or compression under load. In one form, the adhesive is suitable for both absorbent and non-absorbent substrates,whereby this covers a wide range of applications. This versatile character makes the adhesive ideal for situations where different types of floor coverings and substrates are combined. Due to this universal suitability, the same adhesive can be used for various materials, such as porous surfaces like concrete, wood, and plaster, as well as non-porous surfaces like ceramic, metal, and glass. This flexibility significantly simplifies the installation process and reduces the need to purchase or prepare different types of adhesive. The suitability for absorbent substrates, such as concrete or wood, is made possible by a carefully chosen formulation. This formulation contains, for example, specific adhesion promoters and polymers that can penetrate deep into the substrate and create a strong bond. For non-absorbent substrates, such as tiles or metal surfaces,The adhesive ensures excellent surface adhesion without the need for a chemical reaction with the substrate. This is due to the presence of high-quality adhesion promoters and other 25 specific additives designed to achieve a durable bond, regardless of the nature of the surface. The multifunctional nature of this adhesive makes it particularly valuable in modern applications where versatility is required. For example, in commercial spaces, where various floor coverings such as carpet, vinyl and natural stone are often used in a single project, this adhesive can be used seamlessly on all substrates. Furthermore, the adhesive is suitable for residential applications, where a universal approach to floor covering offers a practical solution for diverse materials in different rooms.35 BE2025 / 5076 18 In a second aspect, the present invention concerns the use of an adhesive. This adhesive comprises, among other things, one or more adhesion promoters, comprising a triethylene glycol esterified rosin resin, in a concentration between 10 wt% and 30 wt%,one or more adhesion promoters, comprising an acrylonitrile copolymer, in a concentration between 20 wt% and 50 wt% and one or more open time extenders in a concentration between 1 wt% and 5 wt%. The floor adhesive has, when applied to a substrate in a thickness of 0.1 mm to 2 mm, an open time at 23°C and 50% relative humidity between 30 minutes and 60 minutes, measured according to EN923. 10 In one formulation, the adhesive is specifically used for bonding horizontal flexible floor coverings, such as vinyl, linoleum, rubber, carpet or other elastic materials. Such coverings are becoming increasingly popular due to their versatility, durability and aesthetic possibilities in both residential and commercial spaces. The formulation of the adhesive has been carefully designed to 15 meet the unique requirements of flexible floor coverings, combining strong and long-lasting adhesion with sufficient flexibility to accommodate movement and thermal expansion of the material. An important property of the adhesive is its ability to guarantee uniform adhesion20even when the floor is exposed to daily loads such as foot traffic, heavy furniture, or rolling resistance from, for example, office chairs. Flexible floor coverings tend to move with load or temperature fluctuations, and a suitable adhesive must be able to withstand these dynamic conditions without compromising the integrity of the bond. This is achieved through the use of advanced polymers and plasticizers that provide the necessary elasticity and durability. The adhesive can be applied in a thin layer, ranging from 0.1 mm to 2 mm, depending on the specific covering and installation requirements. This thin but effective layer not only provides a strong bond but also minimizes the risk of irregularities or air bubbles under the floor covering. Furthermore, the long open time, typically between 30 and 60 minutes under standard conditions, ensuresensuring that installers have sufficient time to accurately position and adjust the floor without the adhesive curing prematurely.35 BE2025 / 5076 19 In addition, the adhesive is compatible with various substrates, including absorbent surfaces such as concrete or wood, and non-absorbent substrates such as leveled cement floors or existing tile floors. This versatility makes the adhesive ideal for use in diverse projects, from new construction to renovations, where different substrates and floor coverings are combined.5 This universal character emphasizes the efficiency and user-friendliness of the adhesive. In an execution form, the adhesive as described above is used for bonding floor coverings selected from the group of, but not limited to, 10 Luxury vinyl tiles (LVT), semi-hard vinyl floor tiles, homogeneous / or heterogeneous PVC floor coverings, linoleum, carpets / or cork, rubber floors, ceramic tiles, natural stone such as marble or granite, laminate, solid wood floors, engineered wood floors, bamboo floors, vinyl rolls, epoxy floors,cast floors, terrazzo, coconut mats, sisal, polyurethane floors, textile floor coverings, corkoleum, 15 polyvinyl chloride floors, concrete look floor coverings, asphalt floors, modular carpet, woven vinyl, moss floors, leather floors, sports floors, antistatic floors, floating floors, and / or combinations or hybrid forms thereof. In a preferred form, the adhesive is used for bonding LVT, semi-hard vinyl floor tiles, homogeneous and / or heterogeneous PVC floor coverings, linoleum, carpets and / or 20 cork. In one application form, the adhesive as described above is specifically used for floors with underfloor heating and / or cooling. This application requires an adhesive that is not only resistant to fluctuating temperatures, but also maintains its bonding strength under constant thermal loads and cyclical temperature fluctuations. Underfloor heating systems typically operate at temperatures ranging from 20°C to 35°C,while floor cooling can cool the floor to temperatures around 15°C or lower. This places specific demands on the chemical and mechanical properties of the adhesive.30 The formulation of the adhesive has been optimized to accommodate thermal expansion and contraction of both the floor covering and the substrate without creating stresses that could reduce adhesion. This is made possible by the presence of flexible polymers and plasticizers which ensure an elastic bond.35 As a result, the adhesive remains effective, even when the floor BE2025 / 5076 20 heats up and cools down several times a day, as is common in domestic and commercial applications with climate control systems. Moreover, the adhesive is resistant to the increased humidity sometimes associated with underfloor heating and cooling systems. With underfloor cooling, condensation5 can occur on the substrate or in the immediate vicinity of the adhesive layer, while underfloor heating can promote the evaporation of moisture in the surroundings. The adhesive contains carefully selected ingredients, such as moisture-resistant polymers and additives,ensuring that the adhesive does not degrade or detach when exposed to moisture. This makes the adhesive particularly suitable for use in rooms such as bathrooms, kitchens, or commercial spaces where moisture plays a role. Additionally, the long open time of the adhesive contributes to the efficient installation of floor coverings on heated or cooled surfaces. The installer has sufficient time to accurately position the floor covering and make any necessary adjustments before the adhesive begins to cure. This is especially important when installing large surfaces or complex patterns, such as with luxury vinyl tiles (LVT), homogeneous PVC floors, or linoleum. In one application form, the adhesive is used in different steps for bonding a floor covering and a substrate, depending on the substrate and / or the floor covering. A semi-wet bonding method is applied on absorbent substrates,where the adhesive is applied evenly with a suitable adhesive comb. It is important not to spread more adhesive than can be processed within the open time of 30 to 60 minutes. After a short waiting time of 10 to 25 minutes, the floor covering can be laid. When the adhesive bead has dried superficially, the tack or adhesion strength will still be very low. It is therefore essential to rub the entire surface well after applying the floor covering, so that the adhesive is evenly distributed over the backing of the covering and air inclusions are prevented. End edges, uneven seams, and any deformations in the floor covering must be softened or rolled against. This ensures a firm bond. 20 to 30 minutes after application, it is important to rub the floor covering again.with extra attention to the seams and edges. 35 In an execution form with non-absorbent substrates, the contact bonding method is applied. The floor covering is laid wet and pressed down firmly BE2025 / 5076 21. Subsequently, the floor covering is set back and must be allowed to press down firmly for more than 20 minutes, until a liquid tack occurs, which can be tested with a fingertip test. After this process is completed, the floor covering can be laid again, rolled and pressed down firmly again to strengthen the adhesion. The adhesive consumption depends on the type of floor covering and the structure of the backing. In a design with a floor covering with a smooth backing, the consumption is between 150 g / m² and 300 g / m², preferably between 200 g / m² and 300 g / m², and even more preferably between 200 g / m² and 150 g / m². In another design with a floor covering with an uneven backing, the consumption is between 200 g / m² and 350 g / m², and even more preferably between 250 g / m² and 350 g / m².even more, preferably between 250 g / m² and 300 g / m². In yet another version, with floor covering with a rough backing, the consumption is between 300 g / m² and 450 g / m², 15 more, preferably between 350 g / m² and 450 g / m², even more, preferably between 350 g / m² and 400 g / m². In one aspect, the present invention concerns a sealant comprising a composition as described above and at least one element selected from the group of a notched trowel, masking tape, seam tape, and marking tools for one or more floor coverings. This sealant offers an all-in-one solution for the professional and efficient installation of floors in various applications. The combination of the high-quality adhesive composition with additional tools simplifies the installation process, while the quality and durability of the adhesion are guaranteed. The composition forms the core of the sealant and provides the necessary adhesion properties,water resistance and flexibility. The additional elements in the kit each play a specific role in the installation process. The adhesive trowel ensures an even distribution of the adhesive over the substrate, which is essential for consistent adhesion. Masking tape can be used to delineate areas and prevent adhesive flash-over, which is especially important for precision work or decorative applications. Seam tape reinforces the connection between different floor covering strips and increases the strength of the seams, making the installation resistant to heavy use and mechanical stress. BE2025 / 5076 22 Optionally, the sealant can be supplemented with other elements, such as gloves for safe working, a spatula for applying the adhesive in hard-to-reach corners, a finishing roller to firmly press down the floor covering, or a cleaning agent to remove excess adhesive. These additional components make the sealant particularly suitable for both professional installers and DIYers, with an emphasis on ease of use,reliability and a high-quality end result. The versatility of the sealant makes it possible to efficiently and durably install floor coverings on various surfaces and in diverse situations. 10 In what follows, the invention is described by means of non-limiting examples that illustrate the invention, and which are not intended or should not be interpreted to limit the scope of the invention. EXAMPLES15 EXAMPLE 1: A floor adhesive was produced as follows with a composition as in Table 1. Table 1. Composition of floor adhesive 20 Ingredient Quantity Adhesion promoter (TEG) 16.87wt% Adhesion promoter (acrylonitrile copolymer) 38.5wt% Open time extender 1.75wt% Glycerin 0.47wt% Fungicide 0.33wt% Filler (calcium and magnesium carbonate) 33.16wt% Surfactant 0.61wt% NaOH 0.23wt% H2O Ad 100% The floor adhesive from Table 1 was compared with floor adhesives with a different composition on a PVC floor covering, cork carpet. BE2025 / 5076 23 In addition to the floor adhesive as described in Table 1,Alternative compositions were produced to investigate the influence of both different quantities and other ingredients. These alternative compositions are shown in Table 2. 5 Table 2. Alternative floor adhesive compositions Ingredient Composition A (wt%) Composition B (wt%) Adhesion promoter (TEG) 14.0 Polyethylene glycol 15.5 Adhesion promoter (acrylonitrile copolymer) 40.0 Styrene acrylate polymer 36.0 Open time extender 1.0 2.0 Glycerin 0.30.5 Fungicide 0.250.4 Filler (calcium and magnesium carbonate) 33.0 Aluminium trihydrate 32.0 Surfactant 0.750.5 NaOH 0.20.3 H₂O Ad 100% Ad 100% The performance of the different compositions was tested on PVC-10 floor coverings, cork carpet, where parameters such as adhesion strength,Open time and moisture resistance have been measured. The results are shown in Table 3. Table 3. Comparison of adhesive performance Parameter Original composition (Table 1) Composition A Composition B Adhesion to PVC (N / mm²) 80 70 75 Adhesion to cork (N / mm²) 50 45 42 Adhesion to carpet (N / mm²) 90 85 88 Open time (minutes) 40 15 45 BE2025 / 5076 24 Parameter Original composition (Table 1) Composition A Composition B Moisture resistance after 48 hours No delamination Light delamination Moderate delamination The composition in Table 1 surpassed both Composition A and Composition B on multiple parameters. The higher concentration of the adhesion promoter (TEG) in Table 1 ensured stronger adhesion to both PVC and cork, while the use of acrylonitrile copolymer as an adhesion promoter enabled exceptional compatibility with 5 different substrates. Composition A, in which the quantities of the adhesion promoter and adhesion promoter were reduced,showed reduced bond strength and a shorter open time. This suggests that a lower proportion of TEG negatively affects the balance between bonding and processing time. Composition B, with a replacement of the adhesion promoter by a styrene-acrylate polymer and an alternative filler, resulted in an improved open time, but with a loss of moisture resistance and bond strength on cork PVC.15 The properties of the used styrene-acrylate polymer were less effective in dealing with fluctuating moisture and temperature conditions. These comparisons emphasize the superior balance between bond strength, open time and moisture resistance achieved with the composition in Table 1. As a result, the original floor adhesive is better suited for a wide range of applications, including those with demanding moisture and substrate conditions. 25 BE2025 / 5076,