Composition for sealing and coating edges and / or chamfers of artificial panels

Abstract

The invention relates to a composition for sealing and coating edges and / or chamfers of artificial panels, comprising a) at least one chamfering pigment, and b) at least one additive consisting of at least one compound of general formula (I) R1 aSiX1 (4-a), in which X1 is an alkoxy group, an aryloxy group, an acyloxy group, and R1 is an organic residue, r1 has at least one functional group Q1 selected from the group consisting of alkyl, aryl, cycloalkyl, which can be broken by-O-or-NH-, and wherein R1 has at least one functional group Q1 selected from the group consisting of an acrylic group, an acryloyloxy group, a methacrylic group, a methacryloyloxy group, a cyano group, an isocyano group and an epoxy group, and a = 0, 1, 2, 3, in particular 0 or 1; at least one compound of general formula (II) R2bSiX2 (4-b) wherein X2 is H or alkoxy, aryloxy, acyloxy, R2 is a non-hydrolysable organic residue R2 selected from alkyl and aryl, and b = 1, 2, 3 or 4; the invention relates to a composition comprising at least one aqueous polymer dispersion, characterized in that it is provided with a viscosity (measured according to EN ISO 2431: 2011, 21 DEG C) wherein the outflow time is between 20 seconds and 100 seconds, preferably between 30 seconds and 80 seconds, especially preferably between 35 seconds and 60 seconds over a time period of at least 30 minutes, preferably at least 60 minutes, especially preferably at least 120 minutes.

Description

Technical field

[0001] The present invention relates to a composition for sealing and cladding the edges and / or chamfers of a panel board, an application of the composition, and a panel board having the composition. Background art

[0002] Floor panels having a tenon-groove profile at the side edges for laying into a panel composite structure, such as a laminated floor, are widely popular and conventionally known. The tenon-groove profile enables the floor panels to be simply laid into a floor covering. Such a floor covering can be composed of, for example, wood fiber boards or plastic boards. The floor panels are usually provided with a decorative layer and a wear-resistant surface layer.

[0003] Laminated floors with so-called V-shaped joints have proven to be very popular. The V-shaped joints form chamfers when laying the floor panels. The chamfering involves an inclined milling in the side edges of the floor panels, which is painted with a colored paint and provides a visual impression of imitating a wooden floor for the laminated floor.

[0004] It is known that, especially after the conversion from elements glued to each other in the grooves and tenons to glue-free laying, laminated floor products have weak areas in the transition areas of the elements with respect to moisture ingress or moisture damage. The damage may be caused by direct moisture action, over-maintenance, etc. However, the very simple and rapid laying of the floor covering with a so-called click profile faces this problem. It can be assumed that currently far more than 90% of laminated floors are made with a click profile.

[0005] So far, different strategies have been applied alone or in combination to reduce moisture damage. The simplest feasibility of making it difficult for moisture to penetrate into the profile lies in using the tightest possible fit in the tongue-and-groove connection. However, this may lead to difficult joining of the elements or damage. This method also has the following disadvantages: if water penetrates into the tongue-and-groove area, the wooden material carrier normally expands.

[0006] The effect can be increased by generating compression in the transition area of the elements by means of a special pressing plate already during direct cladding. This is described in WO 2017 / 072657 A1. However, this only delays the expansion and generally does not prevent the expansion.

[0007] Another possibility is to seal the profile with a water-repellent agent. Thus, the use of wax for coating the edges is described in WO 2006 / 038867, where it was observed that the wax at least partially penetrates into the wood material. It is known from EP 903451A2 to treat the edges with diphenylmethane diisocyanate, which easily penetrates into the wood material. In WO 2008 / 078181 A1, a fluorinated polymer, such as a perfluoroalkyl-methacrylate copolymer, is used as a coating agent, where the material forming the layer is solid at room temperature.

[0008] Thus, a disadvantage of these known sealants is in particular that they already often migrate when applied to the wood material carrier, thereby minimizing the hydrophobic effect. However, this can also occur subsequently, such that during use, the effect slowly disappears.

[0009] Another possibility is to use expanded and tempered chipboard, in which higher-quality adhesives (melamine-enhanced UF adhesives, PMDI, etc.) are used during manufacture. Expansion reduction can also be achieved by increasing the amount of adhesive. However, in terms of cost, this possibility is the most unfavorable, since the increased amount of adhesive and / or the higher-quality adhesive cause the board to become significantly more expensive. In terms of recycling, this possibility is considered to be more unfavorable.

[0010] Among the measures described, only the use of higher-quality adhesives causes a reduction in the expansion of the board. The remaining measures only cause a delay in the entry of water into the profile area.

[0011] Correspondingly, different disadvantages result from the known measures. Thus, the improvement in expansion protection is too little, the proposed measures sometimes cannot withstand the actual requirements, and the effects caused are limited in time. Summary of the Invention

[0012] Therefore, the object on which the present invention is based is to overcome the disadvantages listed. In particular, the technical object on which the present invention is based is to produce a laminated floor that generates a seal of the profile against surface water by sealing the chamfered area.

[0013] Here, it should be possible to use existing plant technology. In particular, this should pass the so-called NALFA test (24-hour waterproof test, ISO 4760). This test is suitable for preventing water from entering the profile by suitable measures.

[0014] This method approach has the following advantages: It is not necessary to use a wood fiber board (MDF / HDF = fiber board / fiber board with increased bulk density) with an increased amount of glue or a glue system of higher value in terms of quality as the carrier material, because in the optimal case, water does not penetrate into the board. If possible, solvents are not required in the system used. Chemicals that are corrosive chemically or that strongly load the environment should also not be used. Reactive systems (e.g., isocyanates) that can come into contact with the product surface through overspraying and react with it should also not be applied.

[0015] According to the present invention, this object is achieved by a composition having the features of claim 1.

[0016] Correspondingly, a composition for sealing and cladding the edges and / or chamfers of a wood-based panel is provided, wherein the composition comprises the following:

[0017] a) at least one chamfer pigment, and

[0018] d) at least one additive, which consists of:

[0019] - at least one compound of general formula (I)

[0020] R 1 a SiX 1 (4-a) (I), wherein

[0021] -X 1 is an alkoxy group, an aryloxy group, an acyloxy group, and

[0022] -R 1 is an organic residue selected from: alkyl, aryl, cycloalkyl, the alkyl, aryl, cycloalkyl being able to be interrupted by -O- or -NH-, and

[0023] - wherein R 1 has at least one functional group Q1, the at least one functional group being selected from: acrylic group, acryloxy group, methacrylic group, methacryloxy group, cyano group, isocyano group, and epoxy group, and

[0024] - a = 0, 1, 2, 3, especially 0 or 1;

[0025] - at least one compound of general formula (II)

[0026] R 2 b SiX 2 (4-b) (II), wherein

[0027] -X2 is H or an alkoxy, aryloxy, acyloxy group, and

[0028] -R 2 is a non-hydrolyzable organic residue R 2 which is selected from: alkyl and aryl groups, and

[0029] -b = 1, 2, 3 or 4; and

[0030] - at least one aqueous polymer dispersion.

[0031] The composition according to the invention has a viscosity (measured according to EN ISO 2431:2011, coating materials - determination of the efflux time using a flow cup, 21 °C), where the efflux time is between 20 s and 100 s, preferably between 30 s and 80 s, particularly preferably between 35 s and 60 s, over a period of at least 30 minutes, preferably at least 60 minutes, particularly preferably at least 120 minutes.

[0032] The composition according to the invention is defined by its specific viscosity. The currently used measurement method for determining the viscosity according to EN ISO 2431:2011 requires the use of a measuring cup, where the viscosity is determined indirectly by the efflux time of the composition from the measuring cup.

[0033] In a further preferred embodiment, the viscosity can have the listed efflux times up to 24 h, 36 h or 72 h. A significant advantage of this composition is that the composition is stable and does not gel over a longer period (at least up to 72 h). This enables reliable reproducibility and usability of the composition according to the invention.

[0034] Although a composition for edge sealing comprising a silane and a polymer dispersion is known from EP 3 597 706 B1, however, the composition is unstable and gels after a short time. The differences in viscosity and stability result from the manufacturing method.

[0035] After profiling the floor panel, the chamfer pigment and the sealant are used in combination. In the existing coating equipment (coating wheel or vacuum jig), the mixture or composition is applied to the panel edge and / or the milled chamfer. After drying, the mixture effectively seals the profiled area and the chamfer area to prevent water ingress. It is particularly advantageous here to carry out the combined application, thereby avoiding the installation of additional coating equipment and additional drying devices. Here, the mixing of the components can only be carried out immediately before application to the edge and / or chamfer. Thus, a simple change of components can also be carried out in continuous production. This naturally also applies to color changes.

[0036] The additives used in the present composition include crosslinking components in the case of the compounds of general formula (I) and hydrophobic components in the case of the compounds of general formula (II). The crosslinking hydrophilic component of formula (I) on the one hand enables the compound to bind to the wood fibers, in particular via free - OH groups (already present or formed by hydrolysis of, for example, alkoxy groups), and on the other hand enables the formation of a network. The hydrophobic component of formula (II) (formed, for example, by the alkyl groups of the residue R 2 (forms a water - repellent barrier). In this way, water cannot diffuse through the network of the formed coating.

[0037] The additives used in the present composition fill the pores present in the wood - fiber board and enable the coating of the wood fibers, thereby "sealing" them. On the other hand, by using hydrophobic modifiers, the "hydrophobicity" of the remaining pores and the uncoated wood fibers is established.

[0038] To obtain the highest possible flexibility of the coating, a silane compound is mixed with a suitable aqueous polymer dispersion. The polymers used have functional groups compatible with the inorganic silane matrix. Thus, the production of coatings with a high degree of crosslinking can also be achieved at low temperatures.

[0039] The present composition can be used in any board system and adhesive system. Thus, regardless of the adhesive system used, the different porosity or the board thickness, the composition causes a reduction in swelling in the wood - fiber board. Thus, the swelling - reducing effect of the present composition can be demonstrated in HDF boards and particle boards with urea - formaldehyde adhesives (UF adhesives), melamine - urea - formaldehyde adhesives (MUF adhesives) or polyurethane - based adhesives (PMDI adhesives), or also in boards made of wood - plastic composites (WPC).

[0040] Thus, the composition according to the invention offers different advantages. Thus, it causes significantly lower swelling at the edges, the composition does not penetrate or migrate into the board, the composition can be used in any board and adhesive system, and only requires a relatively small application amount. In particular, the composition according to the invention prevents moisture from penetrating into the V - shaped joints formed after laying the floor panels.

[0041] In one embodiment, the amount of the additive in the present composition is between 20% and 80% by weight, preferably between 25% and 50% by weight.

[0042] In another embodiment, at least one chamfer pigment used in the present composition comprises a colored coating and at least one solvent or suspending agent, in particular an aqueous solvent or suspending agent. Carbon black, iron oxide, titanium dioxide and / or organic coatings are used as the colored coating. Suitable solvents or suspending agents are melamine resin formaldehyde resin or acrylate, and an aqueous mixture thereof is preferred. In one embodiment, the chamfer pigment comprises a colored coating, acrylate and water.

[0043] Residue X 1 is more preferably selected from: C 1-6 -alkoxy, especially methoxy, ethoxy, n-propoxy and butoxy; C 6-10 -aryloxy, especially phenoxy; C 2-7 -acyloxy, especially acetoxy or propoxy, and residue X 2 is preferably selected from: H; C 1-6 -alkoxy, especially methoxy, ethoxy, n-propoxy and butoxy; C 6-10 -aryloxy, especially phenoxy; C 2-7 -acyloxy, especially acetoxy or propoxy.

[0044] Organic residue R 1 is preferably selected from: C1-C 30 -alkyl, especially C5-C 25 alkyl; C2-C6-alkenyl; C3-C8-cycloalkyl and C3-C8-cycloalkenyl. In one embodiment, organic R 1 is selected from: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl, hexyl, cyclohexyl, vinyl, 1-propenyl, 2-propenyl, butenyl, ethynyl, propynyl, butadienyl or cyclohexadienyl, preferably selected from methyl, ethyl, propyl or vinyl.

[0045] In one embodiment of the present composition, at least one functional group Q 1 is selected from: epoxy group, methacrylic group, methacryloxy group, cyano group and / or isocyano group. Accordingly, the functional group Q 1 can advantageously have a residue with a double bond or have an epoxy group, and the residue can be activated and polymerized by means of UV radiation.

[0046] In a variant of the present composition, the compound of general formula (I) having a functional group Q 1 according to R 1 a SiX 1 (4-a) , especially R 1 SiX 1 3 can be selected from: methacryloxypropyltrimethoxysilane (MPTS), aminoethylaminopropyltrimethoxysilane, epoxy-functionalized silanes such as glycidoxypropyltriethoxysilane or vinyl-functionalized silanes such as vinyltrimethoxysilane.

[0047] As described, residue R 1 can have at least one functional group Q 1 . In addition, residue R1 It can also exist in a form substituted by other residues.

[0048] The term "substituted" means that one or more atoms, usually H atoms, are substituted by one or more of the following substituents, preferably by one or two of the following substituents: halogen, hydroxy, protected hydroxy, oxo, protected oxo, C3-C7 cycloalkyl, bicycloalkyl, phenyl, naphthyl, amino, protected amino, mono-substituted amino, protected mono-substituted amino, di-substituted amino, guanidyl, protected guanidyl, heterocyclic group, substituted heterocyclic group, imidazolyl, indolyl, pyrrolidinyl, C1-C 12 -alkoxy, C1-C 12 -acyl, C1-C 12 -acetoxy, acryloyloxy, nitro, carboxy, protected carboxy, carbamoyl, cyano, methanesulfonamido, mercapto, C1-C 10 -alkylthio and C1-C 10 -alkylsulfonyl. The substituted alkyl group, aryl group, alkenyl group can be substituted one or more times with the same or different substituents, and preferably 1 or 2 times.

[0049] As used herein, the term "aryl" means an aromatic hydrocarbon, such as phenyl, benzyl, naphthyl or anthracenyl. The substituted aryl group is an aryl group substituted with one or more substituents as defined above.

[0050] The term "cycloalkyl" includes: cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl.

[0051] In a particularly preferred variant of the present composition, the compound of formula (I) corresponds to the formula SiX 1 4, where the residue X 1 is alkoxy, especially methoxy, ethoxy, n-propoxy or isopropoxy. As particularly preferred crosslinking agents, tetramethoxysilane and tetraethoxysilane are used.

[0052] In another embodiment of the present composition, the non-hydrolyzable organic residue R of the compound according to formula (II) 2 is selected from: C1-C 15 -alkyl, especially C1-C 10 -alkyl and C6-C 10 -aryl. The C1-C 15 -alkyl, especially C1-C 10 -alkyl and C6-C 10 -aryl can be unsubstituted or can be substituted with another hydrophobic group.

[0053] Preferably, the non-hydrolyzable organic residue R 2 is selected from: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, cyclohexyl, phenyl and naphthyl. Particularly preferred are methyl, ethyl, propyl, octyl or phenyl residues.

[0054] Within the scope of the present invention, the term "non-hydrolyzable organic residue" is understood to mean an organic residue that does not cause the formation of OH groups or NH2 groups linked to the Si atom in the presence of water.

[0055] The compounds of formula (II) can in particular include one of the following formulas:

[0056] -R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, or a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, in particular methoxy, ethoxy, n-propoxy or isopropoxy, for example octyltriethoxysilane, phenyltriethoxysilane.

[0057] In one variant of the present composition, the compounds of general formula (I) and the compounds of general formula (II) are used separately as additives.

[0058] However, in another variant of the present composition, at least one compound of general formula (I) and at least two, preferably at least three, compounds of general formula (II) can also be included in the additive. Here, any combination is conceivable.

[0059] Therefore, the additives used in the present composition can include the following combinations:

[0060] - At least one SiX 1 4, where the residue X 1 is an alkoxy group, in particular methoxy, ethoxy, n-propoxy or isopropoxy; and at least one R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, or a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, in particular methoxy, ethoxy, n-propoxy or isopropoxy, for example methyltriethoxysilane, octyltriethoxysilane, phenyltriethoxysilane; or

[0061] - At least one SiX 1 4, where the residue X 1is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy; and at least one R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, such as methyltriethoxysilane, octyltriethoxysilane; and at least one R 2 SiX 2 3, where R 2 is a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy, such as phenyltriethoxysilane, or

[0062] - at least one SiX 1 4, where the residue X 1 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy; and at least two R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, such as methyltriethoxysilane, octyltriethoxysilane; and at least one R 2 SiX 2 3, where R 2 is a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy, such as phenyltriethoxysilane.

[0063] Furthermore, in one variant, the composition can comprise tetraethoxysilane as the compound of formula (I) and methyltriethoxysilane and phenyltriethoxysilane as the compounds of formula (II).

[0064] In another variant, the composition can comprise tetraethoxysilane as the compound of formula (I) and methyltriethoxysilane, phenyltriethoxysilane and octyltriethoxysilane as the compounds of formula (II).

[0065] In another embodiment, in the composition, the compound of general formula (I) is included in a molar amount between 0.08 mol and 0.2 mol, preferably between 0.1 mol and 0.15 mol, particularly preferably between 0.1 mol and 0.12 mol, and the compound of general formula (II) is included in a molar amount between 0.05 mol and 0.1 mol, preferably between 0.06 mol and 0.09 mol, especially preferably between 0.07 mol and 0.08 mol.

[0066] Here, the molar amount ranges given for the compounds of general formula (II) can relate to one compound of general formula (II) or to the sum of two or three compounds of general formula (II).

[0067] Thus, in a variant of the composition consisting of tetraethoxysilane as the compound of formula (I) and methyltriethoxysilane and phenyltriethoxysilane as the compounds of formula (II), 0.15 mol of tetraethoxysilane and 0.04 mol of methyltriethoxysilane / 0.033 mol of phenyltriethoxysilane can be included.

[0068] In another variant of the composition consisting of tetraethoxysilane as the compound of formula (I) and methyltriethoxysilane, phenyltriethoxysilane and octyltriethoxysilane as the compounds of formula (II), 0.1 mol of tetraethoxysilane and 0.03 mol of methyltriethoxysilane / 0.025 mol of phenyltriethoxysilane and 0.043 mol of octyltriethoxysilane can be included.

[0069] The ratio of the silane compound of formula (I) to the silane compound of formula (II) is preferably between 1:0.5 and 1:2, particularly preferably between 1:0.75 and 1:1.5, and more particularly preferably between 1:1 and 1:1.2.

[0070] In a further embodiment of the present composition, at least one polymer is selected from: polyurethane; epoxy resin; melamine resins such as melamine formaldehyde resin; and polyacrylate.

[0071] Currently preferred is to use a polyurethane polymer, where the polyurethane polymer is present based on aromatic polyisocyanates, especially poly diphenylmethane diisocyanate (PMDI), toluene diisocyanate (TDI) and / or diphenylmethane diisocyanate (MDI), and PMDI is particularly preferred.

[0072] The polymer is incorporated into the network formed by the silane compound and imparts the flexible properties to the composition that are conducive to coating.

[0073] The type of polymer used is preferably coordinated with the silane compound used. Thus, it is advantageous to use a silane modified with an epoxy group together with an epoxy polymer, and a silane modified with a methacrylate group together with an acrylate polymer.

[0074] In another embodiment of the present composition, it is also feasible to use more than one polymer.

[0075] In another embodiment, the content of the polymer in the currently used composition is at least 30% by weight, preferably at least 20% by weight, and particularly preferably at least 10% by weight. In one implementation variant, the ratio of sol-gel to polymer is between 1:0.1 and 1:0.5, preferably between 1:0.2 and 1:0.4 (by solids).

[0076] The solvent content caused substantially by the use of silane is between 1% by weight and 15% by weight, preferably between 2% by weight and 13% by weight, and particularly preferably between 4% by weight and 10% by weight. However, in the above description, the solvent content in the used polymer is not considered first. The solvent is especially water and / or alcohol, and ethanol is preferred here. The alcohol fraction can be <1%, for example. It is also feasible that the present composition contains only alcohol and a small amount of water or no water, that is, the silane compound and the polymer dispersion can be used in the form of alcohol.

[0077] In another embodiment, the present composition can contain inorganic particles, especially SiO2, Al2O3, ZrO2, TiO2 particles. The particles preferably used here have a size between 2 nm and 400 nm, preferably between 2 nm and 100 nm, and particularly preferably between 2 nm and 50 nm. By adding inorganic particles, the solid content of the composition is increased, thereby improving the coating performance of the composition. Adding inorganic particles also prevents shrinkage and crack formation. The inorganic particles are used in an amount range of 0.1% by weight to 25% by weight, preferably 5% by weight to 20% by weight, based on the solid content of the silane material (sol-gel material).

[0078] Therefore, the additives used in the present composition can have the following combinations:

[0079] - At least one SiX 1 4, where the residue X 1 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy; and at least one R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, or is a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy, such as methyltriethoxysilane, octyltriethoxysilane, phenyltriethoxysilane, polyurethane and optionally SiO2 particles; or

[0080] - At least one SiX 1 4, where the residue X 1 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy; and at least one R 2SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, such as methyltriethoxysilane, octyltriethoxysilane; and at least one R 2 SiX 2 3, where R 2 is a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy, such as phenyltriethoxysilane, polyurethane and optionally SiO2 particles, or

[0081] - at least one SiX 1 4, where the residue X 1 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy; and at least two R 2 SiX 2 3, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, such as methyltriethoxysilane, octyltriethoxysilane; and at least one R 2 SiX 2 3, where R 2 is a C6-C10 aryl group, preferably phenyl, and X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy, such as phenyltriethoxysilane, polyurethane and optionally SiO2 particles.

[0082] A particularly preferred variant of the composition comprises tetraethoxysilane, methyltriethoxysilane, phenyltriethoxysilane, octyltriethoxysilane and polyurethane and optionally comprises SiO2 particles. An even more particularly preferred variant of the composition comprises tetraethoxysilane, methyltriethoxysilane, octyltriethoxysilane, polyurethane and optionally comprises SiO2 particles.

[0083] According to the first embodiment, the composition can be prepared by a method comprising the following steps:

[0084] - providing at least one dispersion A), which comprises a polymer dispersion and optionally a dispersion of inorganic particles,

[0085] - providing a solution B), which comprises a mixture that is a mixture of at least one compound of general formula (I), at least one compound of general formula (II) and at least one catalyst, especially an acid, - adding the solution B) to the dispersion A) and neutralizing the resulting mixture (e.g. by adding a basic compound);

[0086] - Separating the aqueous phase of the additive composed of a polymer dispersion, at least one compound of general formula (I) and at least one compound of general formula (II), and

[0087] - Adding said additive to at least one chamfered pigment.

[0088] According to a second embodiment, the composition can also be prepared by a method comprising the following steps:

[0089] - Providing solution C), which comprises at least one compound of general formula (I), at least one compound of general formula (II) and at least one polymer dispersion (ion exchanger);

[0090] - Providing solution D), which comprises at least one compound of general formula (II) and at least one catalyst, in particular an acid,

[0091] - Stirring solution D) into solution C);

[0092] - Separating the aqueous phase of the additive composed of at least one compound of general formula (I), at least two compounds of general formula (II) and a polymer dispersion; and

[0093] - Adding said additive to at least one chamfered pigment.

[0094] Inorganic acids and / or organic acids suitable as catalysts are selected from: phosphoric acid, acetic acid, p-toluenesulfonic acid, hydrochloric acid, formic acid or sulfuric acid. Also suitable are ammonium salts, such as ammonium sulfate, which react as weak acids. p-Toluenesulfonic acid is particularly preferred.

[0095] In order to subsequently neutralize the reaction mixture, it is preferred to add a basic compound, such as ammonia or NaOH. This causes the aqueous phase with the binder fraction to separate from the alcohol phase (ethanol phase). Subsequently, the aqueous phase can be easily separated from the alcohol phase.

[0096] In the case of mixing inorganic particles into the binder composition, the inorganic particles are preferably used in an amount between 0.1% by weight and 15% by weight, preferably between 0.5% by weight and 10% by weight, particularly preferably between 1% by weight and 5% by weight.

[0097] As already mentioned above, the composition can be used for cladding or sealing the edges and / or chamfers of wood-based panels, in particular WPC, particle boards, HDF boards or MDF boards.

[0098] The object of the present invention is also achieved by a wood-based panel having the composition.

[0099] Correspondingly, at least one wood-based panel, such as an HDF board, an MDF board or a particle board, comprises at least one composition according to the invention, and the edges and / or chamfers of the wood-based panel are coated by means of said composition for sealing purposes in particular.

[0100] For example, the composition can be applied to the edges and / or chamfers of the wood-based panel by means of spraying, roll coating or using a vacuum jig.

[0101] The layer thickness of the composition on the board edge and / or board chamfer can be between 10 μm and 50 μm, preferably between 20 μm and 40 μm.

[0102] The composition can be applied in a liquid coating manner with a throughput of liquid silane between 100 g / m 2 and 200 g / m 2 Preferably between 120 g / m 2 and 150 g / m 2 This results in a solid fraction on the board edge between 5 mg / cm 2 and 25 mg / cm 2 Preferably between 10 mg / cm 2 and 20 mg / cm 2 between.

[0103] Wood-based panels, such as wood particle boards and wood fiber boards, such as MDF boards, HDF boards, are made of wood chips or wood fibers, which are obtained by cutting wood chips in a cutting machine or by the fiber separation process (Zerfaserungsprozess) of wood chips in a refining machine. The wood fibers used together in the wood fiber board have a length between 1.5 mm and 20 mm and a thickness between 0.05 mm and 1 mm. The size of the wood chips used in the wood particle board depends on whether it is used for the top layer or the middle layer. In the middle layer, the screening width of the chips is > 0.125 mm, and in the top layer, the screening width of the chips is > 0.8 mm - 1.0 mm.

[0104] This wood-based panel can have different binder systems, which are mixed with the wood fibers as binders and pressed. Preferred binder systems are: formaldehyde resins, such as urea formaldehyde resins, melamine formaldehyde resins, melamine urea formaldehyde resins; polyurethanes, preferably based on polyphenylmethane diisocyanate (PMDI); epoxy resins or polyester resins.

[0105] The present panel boards can also have a covering on the upper side of the board, which has a film, for example a film made of a thermoplastic such as PVC or PP, or a paper impregnate, for example an impregnate made of a decorative paper layer or a covering paper. The covering layer impregnate, the decorative impregnate, the balancing impregnate and the kraft paper impregnate are based on thin paper layers that are completely or partially impregnated with a resin, preferably a melamine formaldehyde resin.

[0106] The impregnation can be carried out, for example, in an impregnation bath, by roll coating, by anilox roll coating, by knife coating or also by spraying. In one implementation variant, the paper layer is treated in such a way that first (for example in a soaking tank) the reverse side of the paper layer is impregnated with a resin having a solids content between 50% by weight and 70% by weight, preferably 60% by weight. After passing through a breathing section, immersion impregnation is carried out with the resin. The excess resin is removed in a doctor blade system / pressure roll pair, and optionally (in the case of covering the paper layer) wear-resistant particles are sprinkled onto the impregnated paper layer. A drying step is carried out to a residual humidity of approximately 6%.

[0107] In the case of the covered panel board, the paper (decorative paper, covering paper) is laid on the panel board and pressed. Usually, the impregnated decorative paper is first applied to the upper side of the panel board. Subsequently, at least one covering impregnate is applied to the decorative impregnate. The balancing impregnate is pressed against the panel board on the lower side. The typical structure of a covered HDF board from top to bottom is: covering layer impregnate, decorative impregnate, HDF carrier, balancing impregnate.

[0108] In one implementation, it is also proposed to apply a veneer panel to the panel board. Such a veneer panel usually has a surface conditioning part consisting of a paint based on UV or ESH paint.

[0109] The veneer panel is glued to the panel board (HDF, particle board, OSB, etc.). In order to bond the veneer panel to the carrier, urea glue or PVAc glue with a curing agent is usually used.

[0110] It is also feasible to press the veneer onto the panel board in a short cycle press by means of a paper impregnated with melamine resin (for example a covering layer). The pressing parameters here are approximately T > 150 °C, p > 30 bar, and t > 30 s. A veneer panel floor with a veneer panel having a thickness of approximately 0.5 mm can also be manufactured by means of the said technique. What is decisive here is that during the pressing process, the melamine resin also rises as far as possible into the veneer panel. Thereby, on the one hand, the veneer panel is strengthened with the artificial resin, and on the other hand, the compressed veneer panel is fixed in this state by pressing. However, the melamine resin should not overflow from the veneer panel, because this causes discoloration of the surface and adhesion problems during subsequent painting or oiling.

[0111] In a preferred embodiment, a particle board pressed against a veneer panel is used. For this purpose, in a first step, a resin-impregnated paper (preferably kraft paper impregnated with resin) having a veneer panel is laid on the particle board (e.g., the upper side) and pressed. In a further variant, a resin-impregnated paper and / or a veneer panel is used as a balancing part.

[0112] It is also possible to coat the wood-based panel with a liquid resin layer (liquid coating) and press it. Here, first a primer layer is provided on the wood-based panel, then a base coat layer is provided, and then the base coat layer is printed to form a decorative layer. Subsequently, another resin layer is applied as a protective and wear-resistant layer to the decorative layer. Correspondingly, the wood-based panel can have at least one decorative layer on the upper side and a multi-layer resin structure containing wear-resistant particles, cellulose fibers, and glass spheres. The following layer structure is possible (viewed from bottom to top): a balancing part consisting of six resin layers - a wood-based panel - a primer layer - a printed decorative layer - a protective layer, in particular a protective layer consisting of an incompletely cured resin - a first resin layer with cellulose fibers - a layer consisting of wear-resistant particles - a second resin layer - a third resin layer with glass spheres - a fourth resin layer with glass spheres - a fifth resin layer with glass spheres - a sixth resin layer (without glass spheres). The protective layer is used to cover the decoration and protect the decoration during temporary storage (stacking, storage, transportation). The other resin layers on the upper side together form a covering layer that protects the manufactured laminate from wear and achieves decorative synchronization structuring.

[0113] In the case of using the described wood-based panel as a floor panel, the wood-based panel is provided with a tongue-and-groove locking device and is used for floating laying. The corresponding laying method here includes laying a first floor panel and joining a second floor panel to the first floor panel, wherein the tongue of the second floor panel is inserted into the groove of the first floor panel.

[0114] After laying, the floor panel with chamfers forms a V-shaped joint, which is sealed and protected by the applied composition consisting of chamfer pigment and additives to prevent moisture ingress.

[0115] The present invention will be described in detail below with reference to embodiments. Detailed Description of the Embodiment

[0116] Example 1: Preparation of a Sealing Composition According to the First Method Variant

[0117] Preparation of Dispersion A)

[0118] Provide 28.8 g of an aqueous SiO2 dispersion ( 3550) and 20 g of an aqueous polyurethane solution Alberdingk U 3215.

[0119] Preparation of Solution B)

[0120] Simultaneously heat 12.3 g of octyltriethoxysilane, 2.4 g of trimethylsilane, 6.1 g of phenyltriethoxysilane, 20.8 g of tetraethoxysilane and 28.8 g of water to 50 °C and stir. Now, with stirring, add 2.8 g of sulfuric acid and stir for 120 minutes. Subsequently, while still hot, stir the solution into the above suspension and then stir for an additional 60 minutes at room temperature. Add 0.1 mole of NaOH solution until a pH value of 7.5 is reached.

[0121] After a standing time of 24 hours, separate the alcohol phase via a separatory funnel.

[0122] Now, an additive can be added to a commercially available bevelled-edge pigment up to 50 wt%, and the additive remains stable for several weeks. Curing after coating is carried out thermally (e.g., 100 °C, 5 minutes).

[0123] Example 2: Preparation of a Sealing Composition According to the Second Method Variant

[0124] Preparation of Solution C)

[0125] Provide 6.1 g of phenyltriethoxysilane and 20.8 g of tetraethoxysilane, and add 7.2 g of demineralized water and 0.8 g of the ion exchanger Lewatit 2629. Stir the mixture at 60 °C for 3 hours. Subsequently, remove the ion exchanger again via filtration, and in another step, add 12 g of water and 17 g of the aqueous polyurethane solution Alberdingk U 3215.

[0126] Preparation of Solution D)

[0127] Simultaneously provide 12.3 g of phenyltriethoxysilane, 2.4 g of methyltriethoxysilane, and add 2.4 g of sulfuric acid (1 mole) and 20 g of water and hydrolyze at 55 °C for 4 hours. After cooling to room temperature, stir Solution B into Solution A and store without stirring for 8 hours. Two phases are formed, which are now separated via a separatory funnel.

[0128] Now, an additive can be added to a commercially available bevelled-edge pigment up to 50 wt%, and the additive remains stable for several weeks. Curing after coating is carried out thermally (e.g., 100 °C, 5 minutes)..

[0129] Example 3: Comparison of the Composition According to Example 1 with the Composition According to EP 3 597 706 B1

[0130] Composition according to EP 3 597 706 B1

[0131] The flow time (4 mm nozzle) of the chamfer paint used at 21 °C is 36 seconds (measured according to EN ISO 2431:2011 "Coating materials - Determination of flow time using a flow cup"). The flow time of additive "A" according to the examples in EP 3 597 706 B1 is 11 seconds.

[0132] Adding 25 wt% of "A" to the chamfer paint results in a flow time of 60 seconds for the mixture. After a waiting time of 60 minutes, the flow time rises to 140 to 150 seconds. After an additional waiting time of 60 minutes, measurement is no longer possible because the mixture has gelled.

[0133] Adding 50 wt% of "A" to the chamfer paint results in a flow time of 120 seconds for the mixture. After a waiting time of 60 minutes, the mixture gels.

[0134] Composition according to Example 1

[0135] The flow time (4 mm nozzle) of the chamfer paint used at 21 °C is still 36 seconds. The flow time of additive "B" according to Example 1 is 13 seconds.

[0136] Adding 25 wt% of "B" to the chamfer paint results in a flow time of 40 seconds for the mixture. After a waiting time of 60 minutes, the flow time remains 40 seconds. After an additional waiting time of 60 minutes, the flow time does not increase either. It also does not increase after 72 hours.

[0137] Adding 50 wt% of "B" to the chamfer paint results in a flow time of 40 seconds for the mixture. After a waiting time of 60 minutes, the flow time remains 40 seconds. After an additional waiting time of 60 minutes, the flow time does not increase either. It also does not increase after 72 hours.

[0138] Example 4:

[0139] In a KT press, at pressure and temperature, prepared with a common amount of urea-formaldehyde glue, having approximately 850 kg / m 3The 7.4 mm HDF with a bulk density of is impregnated on the upper side with a covering impregnation (AC4) and a decorative impregnation coating and on the lower side with a balancing impregnation coating (p = 40 bar, T = 200 °C, t = 15 s). The boards are transferred to a curing chamber for cooling and, after three days, are separated into raw boards on a flooring production line. Then, the raw boards are provided with a glue-free profile (see figure), which gives an adverse result in approximately 80% of the tests in the NALFA test. Here, a glue-free profile without an additional plastic locking mechanism is involved. Here, the raw boards are provided in the chamfer with a mixture consisting of the chamfer pigment according to Example 1 and a silane additive (coating amount: 1.0 g / lfm liquid, solids content: approximately 42%). The mixture applied to the chamfer is dried with an IR radiator. For comparison, floors with only the chamfer pigment are produced.

[0140] Example 5:

[0141] The 7.4 mm HDF with a bulk density of approximately 850 kg / m 3 prepared with common amounts of urea-formaldehyde glue is provided with the following material coatings on the upper side in a production line, with intermediate drying following each coating:

[0142] - Melamine primer (20 g liquid melamine resin / m 2 (solids content: 55 wt%), dried

[0143] - White color primer (total of multiple coatings: 25 g liquid white color primer / m 2 (solids content: approximately 55 wt%), intermediate drying:

[0144] - Primer (10 g - 20 g liquid / m 2 ), dried

[0145] - Printing (indirect intaglio printing or digital printing)

[0146] - Melamine covering (approximately 20 g - 30 g liquid melamine resin / m 2 , solids content: approximately 65 wt%, with approximately 10% - 20% glass beads based on the liquid resin).

[0147] Then, in another production line, the pre-coated HDF is provided with the following material coatings:

[0148] - Melamine resin coating on top (approximately 60 g - 80 g liquid melamine resin / m 2 , solids content: approximately 55 wt%):

[0149] - Spraying and coating corundum (20 g - 30 g corundum / m 2, according to FEPA standard F220)

[0150] - Apply melamine resin coating multiple times on the upper side and dry (5 coatings: total coating: 60 g - 80 g liquid melamine resin / m 2 , solid content: approximately 55 wt%, with 10 wt% - 20 wt% glass beads during the 3rd coating)

[0151] - Apply melamine resin coating multiple times on the lower side and conduct intermediate drying (3 coatings: total coating: 140 g - 160 g liquid melamine resin / m 2 , solid content: approximately 55 wt%)

[0152] Include the required additives such as curing agents, wetting agents, and release agents in the formulation. Then, laminate the structure under pressure and temperature in a KT press (p = 40 bar, T = 200 °C, t = 15 s). The board is transferred to a curing chamber for cooling and separated into green boards on the floor production line after three days. Then, the green boards are provided with a glue - free profile (see figure), and the glue - free profile gives an unfavorable result in approximately 80% of the tests in the NALFA test. Here, a glue - free profile without an additional plastic locking mechanism is involved. Here, the green boards are provided with a mixture composed of the chamfer pigment according to Example 1 in the chamfer (coating amount: liquid 1.0 g / lfm, solid content: approximately 42%). The mixture applied to the chamfer is dried with an IR radiator. For comparison, slats with only chamfer pigment are produced.

[0153] Example 6: NALFA test (ISO 4760).

[0154] Prepare test surfaces according to ISO 4760 from the floors prepared in Examples 4 and 5 (10 for each variant). Fill 100 ml of colored water into the rings adhered to the surface. The water stays on the surface for 24 h. Subsequently, evaluate according to the standard. This includes not only determining the residual amount of water still present in the rings but also determining the swelling of the test specimens in the test area. The results are summarized in the following table.

[0155]

[0156]

[0157] The same method is applied to other glue - free profiles (with and without plastic locking mechanisms) that have unfavorable results in the NALFA test. Here, significant improvements are always obtained in the NALFA test. In all variants, the passing rate is greater than 90%.

[0158] Example 7: Plywood - faced and sealed waterproof particleboard

[0159] The initial materials are described below. As an alternative to the balance part made of paper (Alternative I), a balance part made of veneer (Alternative II) can also be used. The veneer used for the balance part can have the same or different, particularly simpler quality compared to the veneer used for the upper side.

[0160] Veneer for the upper side:

[0161] Thickness: 0.6 mm

[0162] Type: Oak

[0163] Paper: Kraft paper impregnated with synthetic resin

[0164] Paper weight: 25 g / m 2

[0165] Resin coating: 600%

[0166] Synthetic resin: Melamine resin

[0167] Waterproof particle board: Thickness 7.8 mm

[0168] Balance part:

[0169] I Paper: Kraft paper impregnated with synthetic resin

[0170] Paper weight: 25 g / m 2

[0171] Resin coating: 600%

[0172] Synthetic resin: Melamine resin

[0173] II Veneer: Thickness 0.6 mm

[0174] Type: Poplar

[0175] Preparation of paper impregnated with synthetic resin:

[0176] Guide the paper through a bath having a liquid synthetic resin, here melamine resin. In the bath, impregnate or soak the paper with the liquid synthetic resin. After impregnation or soaking, remove the excess synthetic resin with a doctor blade so that the layer of synthetic resin is only on the upper side of the paper now impregnated with the synthetic resin. The upper side of the paper impregnated with the synthetic resin consists of the synthetic resin, here melamine resin. The amount of synthetic resin used can be varied. However, the amount is preferably measured such that, upon subsequent pressing, the applied veneer panel is penetrated by the synthetic resin liquefied in the press through at least 2 / 3 of the thickness of the applied veneer panel. Further preferably, the veneer panel is compressed in the press. Thus, according to a particularly preferred embodiment, after the pressing process is completed, at least 2 / 3, advantageously completely, of the veneer panel is impregnated with the synthetic resin. The expansion and contraction of the veneer panel are thereby reduced to a large extent.

[0177] The paper thus soaked is dried until the remaining humidity is, for example, 5% to 6%. Based on the weight of the paper, the resin coating of a 25 g / m 2 heavy paper is 600%. Drying is carried out, for example, in a tunnel dryer in which hot air nozzles flow towards the paper from the upper and lower sides so as to dry the paper, but without curing the synthetic resin therein. The dried paper impregnated with the synthetic resin can now be stored until it is used.

[0178] The paper impregnated with the synthetic resin for the balance part can be manufactured in the same manner as described above. The paper impregnated with the synthetic resin for the balance part is also dried to a VC value of, for example, 6%. The veneer panel for the balance part can be prepared in the same way as the veneer panel for the upper side and subsequently processed in the same way.

[0179] Manufacture of faced panels:

[0180] Stack the balance part, the carrier plate, the paper impregnated with the synthetic resin, and the veneer panel in layers to form a pressing stack, where the paper impregnated with the synthetic resin is oriented with its upper side having the synthetic resin towards the upper side of the waterproof particle board and with its lower side towards the veneer panel. Place the pressing stack in a KT press (short cycle press) and press it there at a temperature of 180 °C and a pressure of p = 30 N / mm 2 during a pressing time of 60 seconds.

[0181] Pressing can be carried out with a simple, smooth press plate. However, in this embodiment, a structured press plate can also be alternatively used as a structure providing device. For example, a press plate having a wood structure can be used. Then, the wood structure of the press plate can be seen in the veneer panel, and the wood structure may be different from the wood structure of the veneer panel. No recognizable melamine resin layer is formed on the upper side of the veneer panel. Subsequently, optionally, a coating amount of 50 g / m is used in the surface2 to 100 g / m 2 of UV paint or a UV oil with a coating amount of 20 g / m 2 to 40 g / m 2 to refine the coated waterproof particle board. Here, the coating amount depends on the desired usage class. Optionally, corundum can be introduced into the UV paint, especially when a higher usage class with improved abrasion resistance should be achieved.

[0182] Thereby, the veneer surface on the upper side protrudes or is designed in a hitherto infeasible manner. Thus, the back side of the waterproof particle board can be left as it is, especially when applying the veneer according to alternative II, or subsequently, for example, a footstep sound insulation device can alternatively be attached.

[0183] Then, first, the large format is separated into original fixed blocks on the floor production line and then milled into profiled floors. The floors can be equipped with chamfers or not equipped with chamfers.

[0184] The chamfered or straight veneer edges are provided with a mixture consisting of the chamfer pigment according to Example 1 and a silane additive (coating amount: 1.0 g / lfm liquid, solids content: approximately 42%). The coating is dried with the aid of an IR radiator.

Claims

1. A composition for sealing and cladding the edges and / or chamfers of wood-based panels, the composition comprising: c) at least one chamfer pigment, the chamfer pigment comprising a colored coating and at least one aqueous solvent, and d) at least one additive, the additive consisting of: - at least one compound of general formula (I) R 1 a SiX 1 (4-a) (I), wherein -X 1 is an alkoxy group, an aryloxy group, an acyloxy group, and -R 1 is an organic residue selected from: alkyl, aryl, cycloalkyl, wherein the alkyl, aryl, cycloalkyl can be interrupted by -O- or -NH-, and - wherein R 1 has at least one functional group Q1 selected from the group consisting of acryloyl groups, acryloyloxy groups, methacryloyl groups, methacryloyloxy groups, cyano groups, isocyano groups and epoxy groups, and - a = 0, 1, 2, 3, especially 0 or 1; - at least one compound of general formula (II) R 2 b SiX 2 (4-b) (II), wherein -X 2 is H or an alkoxy group, aryloxy group, acyloxy group, and -R 2 is a non-hydrolyzable organic residue R 2 , which is selected from: alkyl and aryl, and - b = 1, 2, 3 or 4; and - at least one aqueous polymer dispersion, characterized in that it has the following viscosity (measured according to EN ISO 2431:2011, 21 °C), wherein the efflux time is between 20 seconds and 100 seconds, preferably between 30 seconds and 80 seconds, especially preferably between 35 seconds and 60 seconds, within a period of at least 30 minutes, preferably at least 60 minutes, especially preferably at least 120 minutes.

2. The composition according to claim 1, characterized in that, It contains the additive in an amount between 20% by weight and 80% by weight, preferably between 25% by weight and 50% by weight.

3. The composition according to any one of the above claims, characterized in that, The at least one chamfer pigment comprises a colored coating and an aqueous melamine resin formaldehyde suspension.

4. The composition according to any one of the preceding claims, characterized in that, It contains at least one compound of general formula (I) and at least two, preferably at least three, compounds of general formula (II).

5. The composition according to any one of the above claims, characterized in that, X 1 Selected from: C 1-6 -alkoxy, especially methoxy, ethoxy, n-propoxy and butoxy; C 6-10 -aryloxy, especially phenoxy; C 2-7 -acyloxy, especially acetoxy or propionyloxy; and X 2 Selected from: H; C 1-6 -alkoxy, especially methoxy, ethoxy, n-propoxy and butoxy; C 6-10 -aryloxy, especially phenoxy; C 2-7 -acyloxy, especially acetoxy or propionyloxy.

6. The composition according to any one of the above claims, characterized in that, The compound of the general formula (I) corresponds to the formula SiX 1 4, especially where X 1 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy.

7. The composition according to any one of the above claims, characterized in that, The non-hydrolyzable organic residue R 2 is selected from: C1-C 15 -alkyl, especially C1-C 10 -alkyl; and C6-C 10 -aryl.

8. The composition according to any one of the above claims, characterized in that, Non-hydrolyzable organic residue R 2 Selected from: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, cyclohexyl, vinyl, 1-propenyl, 2-propenyl, butenyl, ethynyl, propynyl, phenyl and naphthyl.

9. The composition according to any one of the preceding claims, characterized in that, The compound of general formula (II) comprises one of the following formulas: -R 2 4Si, where R 2 is a C1-C5 alkyl group, preferably methyl or ethyl; -R 2 3SiX 2 , wherein R 2 is a C1-C5 alkyl group, preferably methyl or ethyl, and wherein X 2 is H, -R 2 SiX23, where R 2 is a C1-C10 alkyl group, preferably methyl, ethyl, propyl, pentyl, hexyl, heptyl, octyl, or is a C6-C10 aryl group, preferably phenyl, and where X 2 is an alkoxy group, especially methoxy, ethoxy, n-propoxy or isopropoxy.

10. The composition according to any one of the preceding claims, characterized in that, At least one polymer of the polymer dispersion is selected from: polyurethane, especially polymethylene diphenyl diisocyanate (PMDI); epoxy resin; melamine resin; polyacrylate.

11. The composition according to any one of the above claims, characterized in that, It can contain inorganic particles, especially SiO2, Al2O3, ZrO2, TiO2 particles.

12. The composition according to any one of the above claims, the composition can be prepared by the following method, the method comprising the following steps: - providing at least one dispersion A), which comprises a polymer dispersion and optionally a dispersion comprising inorganic particles, - providing a solution B), which comprises a mixture, the mixture being a mixture of at least one compound of general formula (I), at least one compound of general formula (II) and at least one catalyst, especially an acid, - adding the solution B) to the dispersion A) and neutralizing the accumulated mixture (adding a basic compound); - separating the aqueous phase of the additive consisting of a polymer dispersion, at least one compound of general formula (I) and at least one compound of general formula (II), and - adding the additive to the at least one chamfer pigment.

13. The composition according to any one of claims 1 to 12, the composition can be prepared by the following method, the method comprising the following steps: - providing a solution C), which comprises at least one compound of general formula (I), at least one compound of general formula (II) and at least one polymer dispersion (ion exchanger); - providing a solution D), which comprises at least one compound of general formula (II) and at least one catalyst, especially an acid, - stirring the solution D) into the solution C); - separating the aqueous phase of the additive consisting of at least one compound of general formula (I), at least two compounds of general formula (II) and a polymer dispersion; and - adding the additive to at least one chamfer pigment.

14. Use of a composition according to any one of the above claims, said composition being used for cladding / sealing the edges and / or chamfers of a panel board, in particular a particle board, an HDF board or an MDF board.

15. A panel board, said panel board comprising at least one composition according to any one of claims 1 to 13 applied to the edges and / or chamfers.

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