Multipurpose waterborne epoxy floor composition

Abstract

A multi-component composition particularly suitable for use in floor coatings is described. The multi-component composition comprises a curing component comprising at least one amine-functional adduct that is the reaction product of (a) at least one polyetheramine, (b) at least one polyalkyleneamine, (c) at least one aryl-aliphatic or cycloaliphatic amine, (d) at least one polyether epoxy resin, (e) at least one polyetheramine, (e) at least one polyetheramine, (e) at least one polyetheramine, (e) at least one polyetheramine, (e) at least one polyetheramine, and (e) at least one polyetheramine. And (e) at least one aromatic liquid epoxy resin. The composition can be used as a basis for all layers such as a primer layer, a scratch resistant coating, a self-leveling layer and a sealing layer, can be preferably applied in a single application step for each layer, and provides an aesthetically pleasing appearance (visual appearance, surface properties and good opacity), good processability, and does not cause crack formation.

Description

Technical Field

[0001] The present invention relates to a multi-component composition, a method for preparing a coating using the multi-component composition, and the use of the multi-component composition as a multi-purpose floor composition. Prior Art

[0002] The requirements for floor coating systems are different in some cases. Desirable properties of floor coatings can be, for example, an aesthetically appealing appearance. Further requirements are, for example, good processability and leveling properties.

[0003] Floor coating systems are multi-layer systems which usually contain a primer layer for good adhesion on a substrate, a scratch-resistant coating on top thereof if the substrate has to be levelled, a self-levelling layer if desired, and finally a sealant layer. The said layers usually consist of separate commercial products and require a large number of different commercial products at the application site and in storage facilities. Some commercial products are advertised as being applicable for more than one of the above purposes, however none of the current solutions can be applied as a thin layer (e.g. as a primer layer) and at the same time as a thicker layer (e.g. a self-levelling layer) without final performance defects of the cured layer, such as a poor visual appearance or crack formation. In addition, such prior art compositions have to be applied in multiple application steps to obtain a usable self-levelling layer.

[0004] Another technical difficulty in applying prior art compositions is their lack of opacity (also called hiding power in the case of paints), i.e. the ability of a layer (especially in the case of a sealant layer) to cover the appearance of the underlying layer, which is an important aspect of the aesthetically pleasing appearance of the final product.

[0005] There has long been a need in the art to provide a "one-product fits all" solution for a composition which can be used as a basis for all of the above layer types (primer layer, scratch-resistant coating, self-levelling layer and sealant layer). Such a composition would serve as a basis at the application site and, if desired, when applied as a primer layer, could be diluted with tap water if needed; when applied as a scratch-resistant coating, a thixotropic agent could be added if needed; sand could be added when applied as a self-levelling layer; and if applied as a sealant layer, it could be used "as is". Such a composition would render the need for a large number of commercial products at the application site and in storage / supply locations redundant.

[0006] WO20249751 discloses an epoxy composition for floor coatings which comprises an aqueous hardener component, a resin component containing at least one liquid epoxy resin, and mineral fillers, wherein the composition contains 85 to 95% by weight of mineral fillers, based on the total solids of the composition. Summary of the Invention

[0008] Accordingly, the object of the present invention is to provide a composition which can serve as a basis for all layers such as a primer layer, a scratch-resistant coating, a self-leveling layer and a sealing layer, which can preferably be applied in a single application step with respect to each layer, and which provides an aesthetically pleasing appearance (visual appearance, surface properties and good opacity), good processability and does not cause crack formation.

[0009] This object is surprisingly achieved by the multi-component composition described below.

[0010] Accordingly, the present invention relates to a multi-component composition comprising:

[0011] A) a binder component (A) comprising at least one epoxy resin,

[0012] B) a curing component (B) comprising at least one amine-functional adduct which is the reaction product of:

[0013] (a) at least one polyetheramine,

[0014] (b) at least one polyalkyleneamine,

[0015] (c) at least one arylaliphatic or cycloaliphatic amine,

[0016] (d) at least one polyether epoxy resin, and

[0017] (e) at least one aromatic liquid epoxy resin.

[0018] Based on the total weight of the multi-component composition, the multi-component composition contains 9-22% by weight of at least one amine-functional adduct.

[0019] Based on the total weight of the multi-component composition, the multi-component composition contains 15-35% by weight of at least one filler, preferably an inorganic filler.

[0020] The term "polyamine" as used herein refers to a compound having at least two primary or secondary amino groups.

[0021] In the present context, a "primary" amino group refers to an NH2 group bonded to one organic group, and a "secondary" amino group refers to an NH group bonded to two organic groups, which two organic groups may also together form part of a ring.

[0022] In the present context, "molecular weight" should be understood to mean the molar mass of the molecule (grams per mole). "Average molecular weight" means the number average molecular weight Mn of a polydisperse mixture of oligomeric or polymeric molecules, which is usually determined by GPC using polystyrene as the standard.

[0023] The term "polyepoxide" in this document refers to a compound having at least two epoxy groups. "Diepoxide" refers to a compound having two epoxy groups.

[0024] The "epoxide group" or "epoxy group" in this document refers to the structural element

[0025] The term "polyetheramine" refers to an amine-functional polyether.

[0026] The term "polyalkyleneamine" refers to a linear polyamine containing at least three amino groups separated from each other by alkylene groups.

[0027] The term "aryl aliphatic amine" refers to a molecule having an amino group attached to an aliphatic carbon atom of an aryl aliphatic moiety.

[0028] The term "alicyclic amine" refers to a molecule having an amino group attached to an aliphatic carbon atom of an alicyclic moiety.

[0029] The term "solid" or "solid content" refers to the proportion of a composition from which all volatile components such as water or solvent have evaporated. It can be determined arithmetically or by drying the composition to constant weight in an infrared dryer or a circulating air oven.

[0030] The term "amine hydrogen" refers to the hydrogen of primary and secondary amine groups.

[0031] The term "amine hydrogen equivalent" refers to the mass of an amine or amine-containing composition containing 1 molar equivalent of amine hydrogen.

[0032] In this document, the term "room temperature" refers to a temperature of 23 °C.

[0033] The term "pot life" refers to the period of time during which a multi-component composition can be applied without defect after the components are mixed. A typical measure of pot life can be the doubling of viscosity.

[0034] The abbreviation "EEW" in this document stands for "epoxy equivalent weight".

[0035] The "glycidyl ether" in this document refers to an ether of 2,3-epoxy-1-propanol (glycidol).

[0036] In this document, the term "opacity" refers to the property of a cured film / coating to cover the surface of the substrate on which the cured film / coating is applied, especially the property of blurring a contrasting color background.

[0037] Preferred embodiments of the composition are given in the dependent claims. The invention will be described in detail below. DETAILED DESCRIPTION OF THE INVENTION

[0039] Compound names starting with "poly / " or "multi-" refer to substances that formally contain two or more functional groups that appear in their names per molecule. The compound can be monomeric, oligomeric or polymeric. Polyamines are, for example, compounds having two or more amino groups. Polyepoxides are compounds having two or more epoxy groups.

[0040] Epoxy resins are polyepoxides, i.e., compounds having two or more epoxy groups. Epoxy resins are preferably oligomeric or polymeric compounds. Epoxy resins are sometimes also used in combination with so-called reactive diluents. Reactive diluents are monoepoxides or polyepoxides. Reactive diluents have a lower viscosity than the epoxy resins used and are used to reduce the viscosity of the epoxy resins used. Optional reactive diluents are also incorporated into the organic binder matrix and are thus counted as epoxy resins in this text for determining the organic binder content.

[0041] The epoxy equivalent weight (EEW) can be determined according to DIN 53188 and is expressed in g / eq. The NH equivalent weight can be determined according to DIN 16945 and is expressed in g / eq. The stoichiometric ratio of the epoxy functionality to the amine functionality is the quotient of the epoxy equivalent weight and the NH equivalent weight and is often expressed in %. The NH equivalent weight is based here on the active NH hydrogens. Primary amines, for example, have two active NH hydrogens.

[0042] The composition of the present invention is a multi-component composition, i.e., the composition comprises a plurality of, in particular two, separate components which are only mixed together during use. These components are stored separately before use to avoid spontaneous reactions. For use, these components are mixed with each other. After mixing, the organic crosslinking reaction starts, which ultimately leads to the curing of the mixture.

[0043] The composition of the present invention comprises a binder component (A) and a curing component (B). The composition can preferably be a two-component composition consisting only of these two components. However, if desired, the composition can also include one or more additional components. For example, in a preferred embodiment, if the multi-component composition of the present invention comprises pigments as colorants, they can be present in at least one of the two mentioned components (A) and (B) and / or in an additional pigment component (C). Preferably, they are in the curing component (B).

[0044] Obviously, the proportion of a specific component in the component mixture depends on the proportion of the component in the components under discussion and the mixing ratio of the components. Unless otherwise stated, the proportions or ratios of specific components specified herein relate to the appropriate or suitable weight proportion or weight ratio of the components in the component mixture of the multi-component composition. This is obtained, for example, by mixing the components in a suitable mixing ratio according to the instructions for use.

[0045] The binder component (A) comprises at least one epoxy resin and optionally a reactive diluent. The binder component (A) is preferably a liquid component. It can be viscous, but is usually pourable.

[0046] The binder component (A) comprises at least one epoxy resin. One epoxy resin or a mixture of two or more epoxy resins can be used. Any epoxy resin commonly used in epoxy chemistry can be used as the epoxy resin. The epoxy resin can be prepared, for example, in a known manner by the oxidation of the corresponding olefins or by the reaction of epichlorohydrin with the corresponding polyols or polyphenols.

[0047] Epoxy resins can be subdivided into liquid epoxy resins and solid epoxy resins. The epoxy resin can have, for example, an epoxy equivalent of 156 - 500 g / eq. The epoxy resin is preferably a diepoxide.

[0048] In one embodiment, the epoxy resin can be an aromatic epoxy resin. Suitable examples for this purpose are the liquid epoxy resins of formula (III)

[0049]

[0050] wherein R' and R” are each independently a hydrogen atom or a methyl group, and the average value of s is from 0 to less than 2, preferably from 0 to 1. Those liquid resins of formula (III) in which the average value of the subscript s is less than 0.2 are preferred.

[0051] The epoxy resin of formula (III) is the diglycidyl ether of bisphenol A, bisphenol F and bisphenol A / F, where A represents acetone and F represents formaldehyde, which are used as reactants for preparing these bisphenols. This liquid epoxy resin can be commercially obtained, for example, under the following names: from Huntsman from Dow from Momentive from CVC Chem from Cognis or from Cytec

[0052] Other suitable aromatic epoxy resins are the glycidylated products of the following substances:

[0053] - dihydroxybenzene derivatives such as resorcinol, hydroquinone and catechol;

[0054] - Other bisphenols or polyphenols, such as bis(4-hydroxy-3-methylphenyl)methane, 2,2-bis(4-hydroxy-3-methylphenyl)propane (bisphenol C), bis(3,5-dimethyl-4-hydroxyphenyl)methane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane, 2,2-bis(4-hydroxy-3-tert-butylphenyl)propane, 2,2-bis(4-hydroxyphenyl)butane (bisphenol B), 3,3-bis(4-hydroxyphenyl)pentane, 3,4-bis(4-hydroxyphenyl)hexane, 4,4-bis(4-hydroxyphenyl)heptane, 2,4-bis(4-hydroxyphenyl)-2-methylbutane, 2,4-bis(3,5-dimethyl-4-hydroxyphenyl)-2-methylbutane, 1,1-bis(4-hydroxyphenyl)cyclohexane (bisphenol Z), 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (bisphenol TMC), 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,4-bis[2-(4-hydroxyphenyl)-2-propyl]benzene (bisphenol P), 1,3-bis[2-(4-hydroxyphenyl)-2-propyl]benzene (bisphenol M), 4,4'-dihydroxybiphenyl (DOD), 4,4'-dihydroxybenzophenone, bis(2-hydroxynaphthalen-1-yl)methane, bis(4-hydroxynaphthalen-1-yl)methane, 1,5-dihydroxynaphthalene, tris(4-hydroxyphenyl)methane, 1,1,2,2-tetrakis(4-hydroxyphenyl)ethane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulfone;

[0055] - Condensation products of phenol and formaldehyde obtained under acidic conditions, such as phenol novolac or cresol novolac;

[0056] - Aromatic amines, such as aniline, toluidine, 4-aminophenol, 4,4'-methylenediphenyldiamine (MDA), 4,4'-methylenediphenylbis(N-methyl)amine, 4,4'-[1,4-phenylenebis(1-methylethylidene)]dianiline (dianiline P), 4,4'-[1,3-phenylenebis(1-methylethylidene)]dianiline (dianiline M).

[0057] In another embodiment, the epoxy resin can be an aliphatic or alicyclic epoxy resin, such as

[0058] - Diglycidyl ether;

[0059] - Glycidyl ethers of saturated or unsaturated, branched or unbranched, cyclic or acyclic C2 to C 30 diols, such as ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, octylene glycol, polypropylene glycol, dimethylolcyclohexane, neopentyl glycol;

[0060] - Glycidyl ethers of trifunctional or tetrafunctional, saturated or unsaturated, branched or unbranched, cyclic or acyclic polyols, such as castor oil, trimethylolpropane, trimethylolethane, pentaerythritol, sorbitol or glycerol, and alkoxylated glycerol or alkoxylated trimethylolpropane;

[0061] - Hydrogenated liquid bisphenol A, F or A / F resins, or glycidylated products of hydrogenated bisphenol A, F or A / F;

[0062] - N-glycidyl derivatives of amides or heterocyclic nitrogen bases, such as triglycidyl cyanurate and triglycidyl isocyanurate, and reaction products of epichlorohydrin and hydantoin.

[0063] Other examples of available epoxy resins are epoxy resins prepared by the oxidation of olefins, such as epoxy resins prepared by the oxidation of vinylcyclohexene, dicyclopentadiene, cyclohexadiene, cyclododecadiene, cyclododecatriene, isoprene, hex-1,5-diene, butadiene, polybutadiene or divinylbenzene.

[0064] Other examples of available epoxy resins are solid bisphenol A, F or A / F resins, which are formed in the same manner as the liquid epoxy resins of formula (III) above, except that the value of the subscript s is 2-12. Other examples are all of the above epoxy resins hydrophilically modified by reaction with at least one polyoxyalkylene polyol.

[0065] Preferred epoxy resins are solid or liquid bisphenol A, F or A / F resins, which are commercially available from, for example, Dow, Huntsman and Momentive. The epoxy resin used is more preferably a diepoxide of bisphenol A diglycidyl ether, bisphenol F diglycidyl ether and bisphenol A / F diglycidyl ether, especially those with an epoxy equivalent of 156-250 g / eq, such as the commercial products GY 250, PY 304, GY 282 (from Huntsman); 331, 330 (from Dow); 828, 862 (from Momentive), and N,N-diglycidylaniline and polyethylene glycol diglycidyl ether, preferably having an epoxy equivalent of 170 to 340 g / eq., such as the commercial products 732 and 736 (from Dow).

[0066] Advantageously, the binder component (A) contains at least one reactive diluent. As described, this is part of the epoxy resin accounted for as the organic binder content. One or more reactive diluents can be used. Suitable reactive diluents are monoepoxides and polyepoxides. Adding the reactive diluent to the epoxy resin results in a viscosity reduction and, in the cured state of the epoxy resin composition, results in a reduction of the glass transition temperature and mechanical values.

[0067] Examples of reactive diluents are glycidyl ethers of mono- or polyhydric phenols and aliphatic or cycloaliphatic alcohols, such as in particular the polyglycidyl ethers of diols or polyols already mentioned as aliphatic or cycloaliphatic epoxy resins, and also in particular phenyl glycidyl ether, tolyl glycidyl ether, p-n-butylphenyl glycidyl ether, p-tert-butylphenyl glycidyl ether, nonylphenyl glycidyl ether, allyl glycidyl ether, butyl glycidyl ether, hexyl glycidyl ether, 2-ethylhexyl glycidyl ether and glycidyl ethers of natural alcohols, such as C8- to C 10 -alkyl glycidyl ethers, C 12 - to C 14 -alkyl glycidyl ethers or C 13 - to C 15 -alkyl glycidyl ethers, which are commercially available as GE-7, GE-8 (from CVC) or as P 13-19 (from Leuna).

[0068] Preferably, based on the total weight of the multicomponent composition, the multicomponent composition contains 20 - 45% by weight, in particular 25 - 40% by weight, preferably 27.5 - 37.5% by weight of the binder component (A).

[0069] The curing component (B) comprises at least one amine-functional adduct, which is the reaction product of

[0070] (a) at least one polyetheramine,

[0071] (b) at least one polyalkyleneamine,

[0072] (c) at least one arylaliphatic or cycloaliphatic amine,

[0073] (d) at least one polyether epoxy resin, and

[0074] (e) at least one aromatic liquid epoxy resin.

[0075] Based on the total weight of the multi-component composition, the amount of at least one amine-functional adduct is 9-22% by weight of at least one amine-functional adduct. An amount less than 9% by weight has the disadvantage of insufficient opacity of the cured composition. This can be seen, for example, in the comparison of compositions E1 and E4-6 with Ref.1. An amount greater than 22% by weight has the disadvantages of insufficient opacity of the cured composition and poor visual appearance of the cured composition.

[0076] Preferably, based on the total weight of the multi-component composition, the multi-component composition contains 11-20% by weight, preferably 13-17.5% by weight of at least one amine-functional adduct. This range has the advantages of improved opacity of the cured composition and better surface structure and visual appearance of the cured composition. This can be seen, for example, in the comparison of composition E1 with E4-6 and Ref.1.

[0077] The curing component (B) is preferably a liquid component. It can be viscous, but is usually pourable.

[0078] The amine-functional adduct is based on (a) at least one polyetheramine. The polyetheramine enables particularly low viscosity and low shrinkage.

[0079] Preferred are polyetheramines that do not contain secondary or tertiary amine groups and contain two or three, especially two primary amine groups.

[0080] Suitable polyetheramines preferably contain repeating units selected from 1,2-ethyleneoxy, 1,2-propyleneoxy, 1,3-propyleneoxy, 1,2-butyleneoxy, and 1,4-butyleneoxy.

[0081] Preferred are polyetheramines having 1,2-ethyleneoxy and / or 1,2-propyleneoxy as repeating units.

[0082] Particularly preferred are polyetheramines that contain only 1,2-propyleneoxy as repeating units in the polyether chain. Such polyetheramines are hydrophobic and can have a long pot life.

[0083] Preferred polyetheramines have an average molecular weight Mn of 200 to 5000 g / mol, more preferably 200 to 2000 g / mol, especially 200 to 500 g / mol.

[0084] Most preferred are polyoxypropylenediamines with an average molecular weight Mn of 200-2000 g / mol, preferably 200-500 g / mol. Such polyetheramines are commercially available, for example, as D-230, D-400 or D-2000 (all from Huntsman).

[0085] The amine-functional adduct is further based on (b) at least one polyalkyleneamine. The polyalkyleneamine enables the hardener component to have good pigment dispersion properties and good stability without separation.

[0086] Preferably, the polyalkyleneamine is an amine of formula (I),

[0087]

[0088] where

[0089] x is an integer from 1 to 6, and

[0090] B are each independently C2-C6 alkylene.

[0091] Such polyalkyleneamines are usually used in industrial grades.

[0092] Suitable polyalkyleneamines are especially diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), higher homologues of linear polyvinylamine, dipropylenetriamine (DPTA), N-(2-aminoethyl)-1,3-propanediamine (N3-amine), N,N'-bis(3-aminopropyl)ethylenediamine (N4-amine), N,N'-bis(3-aminopropyl)-1,4-diaminobutane, N5-(3-aminopropyl)-2-methyl-1,5-pentanediamine, N3-(3-aminopentyl)-1,3-pentanediamine, N5-(3-amino-1-ethylpropyl)-2-methyl-1,5-pentanediamine, N,N'-bis(3-amino-1-ethylpropyl)-2-methyl-1,5-pentanediamine or bis(6-aminohexyl)amine (BHMT).

[0093] Preferably, x is 2 or 3 or 4.

[0094] Preferably, B is 1,2-ethylene and / or 1,3-propylene, especially 1,2-ethylene.

[0095] Particularly preferred polyalkyleneamines are TETA, TEPA, PEHA or N4-amine, especially TETA, TEPA or PEHA. They enable the pigment to have particularly good wettability and a high curing rate. Most preferably, it is TEPA.

[0096] The amine-functional adduct is further based on (c) at least one arylaliphatic or cycloaliphatic amine.

[0097] The arylaliphatic or cycloaliphatic amine preferably has two primary amine groups and no secondary or tertiary amine groups. It preferably has a molecular weight in the range of 100-300 g / mol.

[0098] Preferably, the arylaliphatic or cycloaliphatic amine has two primary amine groups and, apart from these, contains no additional heteroatoms.

[0099] Suitable arylaliphatic or cycloaliphatic amines are in particular 1,2-diaminocyclohexane, 1,3-diaminocyclohexane, 1,4-diaminocyclohexane, 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, bis(4-aminocyclohexyl)methane, 4-(4-aminocyclohexylmethyl)aniline, bis(4-amino-3-methylcyclohexyl)methane, bis(4-amino-3-ethylcyclohexyl)methane, bis(4-amino-3,5-dimethylcyclohexyl)methane, bis(4-amino-3-ethyl-5-methylcyclohexyl)methane, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane (isophoronediamine or IPDA), 2(4)-methyl-1,3-diaminocyclohexane, 2,5(2,6)-bis(aminomethyl)bicyclo[2.2.1]heptane (norbornanediamine or NBDA), 3(4),8(9)-bis(aminomethyl)tricyclo[5.2.1.0 2,6 decane, 1,4-diamino-2,2,6-trimethylcyclohexane (TMCDA), 1,8-menthanediamine, 1,3-bis(aminomethyl)benzene (MXDA), 1,4-bis(aminomethyl)benzene, amines based on dimer fatty acids such as 1071 or 1074 (both from Croda) or phenolic amines, such as the reaction product of cardanol, formaldehyde and a primary diamine, available commercially from Cardolite.

[0100] Preferably, the arylaliphatic or cycloaliphatic amine is selected from 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, 2(4)-methyl-1,3-diaminocyclohexane, 2,5(2,6)-bis(aminomethyl)bicyclo[2.2.1]heptane and 1,3-bis(aminomethyl)benzene. Particularly preferred among these is 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane or 1,3-bis(aminomethyl)benzene. Most preferred is 1,3-bis(aminomethyl)benzene.

[0101] The preferred amines enable a good balance of hydrophilicity, low viscosity and high reactivity.

[0102] The amine-functional adduct is further based on (d) at least one polyether epoxy resin. The polyether epoxy resin enables good flow behavior and high impact resistance.

[0103] Preferably, the polyether epoxy resin has an average molecular weight Mn of 200 to 2000 g / mol, in particular 300 to 1500 g / mol.

[0104] Suitable polyether epoxy resins are especially polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, polytetrahydrofuran diglycidyl ether or mixtures thereof.

[0105] The polyether epoxy resin is preferably polypropylene glycol diglycidyl ether.

[0106] Most preferably, the polyether epoxy resin is an industrial grade polypropylene glycol diglycidyl ether having an epoxy equivalent of 150 - 750 g / mol, especially 300 - 500 g / mol.

[0107] Such polyether epoxy resins are commercially available, for example D.E.R. 732 or D.E.R. 736P (both from Dow), F 704 (from EMS-Chemie) or DY-F (from Huntsman).

[0108] It can be beneficial to use a mixture of two or more grades of polyether epoxy resins to obtain the most balanced hydrophilic properties and low viscosity in the adduct.

[0109] The amine-functional adduct is further based on (e) at least one aromatic liquid epoxy resin.

[0110] Aromatic liquid epoxy resins are generally industrial grade aromatic polyepoxy resins having a glass transition temperature below 25 °C. In contrast, solid epoxy resins have a glass transition temperature above 25 °C and can be ground into a powder.

[0111] Suitable aromatic liquid epoxy resins are the following glycidyl ethers:

[0112] - bisphenol A, bisphenol F or bisphenol A / F, where A represents acetone and F represents formaldehyde, which are used in the production of these bisphenols. Industrial grade bisphenol F may also contain positional isomers, especially those derived from 2,4'- or 2,2'-hydroxyphenylmethane;

[0113] - resorcinol, hydroquinone or catechol; or

[0114] - other bisphenols.

[0115] Preferred aromatic liquid epoxy resins are bisphenol A and / or F diglycidyl ether. Such epoxy resins are available from, for example, Dow, Huntsman, Hexion, Allnex or Momentive.

[0116] To prepare the adduct, other amines and / or other glycidyl ethers can be used in addition to those already mentioned.

[0117] In a preferred embodiment of the present invention, a solid aromatic epoxy resin is used in addition to the liquid aromatic epoxy resin. Preferably, the amount of the solid aromatic epoxy resin is 5-15% by weight, based on the total weight of all epoxy-functional substances in the adduct.

[0118] In another preferred embodiment of the present invention, an epoxy-functional reactive diluent is used together with the liquid aromatic epoxy resin, in particular the diglycidyl ethers of 1,4-butanediol, 1,6-hexanediol or 1,4-cyclohexanedimethanol, or the 12 -C 14 alcohols, the 13 -C 15 alcohols, phenol, cresol or the monoglycidyl ethers of p-tert-butylphenol. This gives the adduct a particularly low viscosity. Preferred are the diglycidyl ethers, in particular the industrial grade 1,6-hexanediol diglycidyl ether.

[0119] Bisphenol A and / or F diglycidyl ethers containing a certain amount of reactive diluent are commercially available.

[0120] The amine-functional adduct is preferably prepared by reacting (a) a polyetheramine, (b) a polyalkyleneamine, (c) an arylaliphatic or cycloaliphatic amine and optionally other amine-functional substances, with (d) a polyether epoxy resin, (e) an aromatic liquid epoxy resin and optionally other epoxy-functional substances, wherein the ratio between the primary amine groups and the epoxy groups is greater than 1.

[0121] Preferably, the total ratio between the primary amine groups and the epoxy groups in the reaction for forming the amine-functional adduct is 1.5-4, preferably 2-3. This ratio range contributes to a low-viscosity adduct which cures under ambient conditions to a coating with a uniform and glossy surface.

[0122] The amine-functional adduct is preferably prepared by reacting a compound containing amine groups with a compound containing epoxy groups at a temperature of 15-120 °C, preferably 40-100 °C, more preferably 60-90 °C. The order of the reaction is free as long as the primary amine groups are always in excess relative to the epoxy groups in the reaction mixture.

[0123] In a preferred embodiment, the amine-functional adduct is prepared in a one-pot reaction by mixing all the reactants together and reacting them in a temperature range of 50-130 °C, preferably 60-100 °C. Preferably, the amine is premixed, optionally together with the solid epoxy resin, the mixture is heated to at least 50 °C and the polyether epoxy resin, the liquid aromatic epoxy resin and optionally the reactive diluent are slowly added with good stirring and temperature control. This one-pot reaction is particularly easy and fast.

[0124] A second step can be added during the production process by reacting an amine-functional adduct with a monocyclic epoxide (such as p-tert-butylphenyl glycidyl ether). Such a second step is possible, but not necessary for obtaining the good properties of the epoxy composition.

[0125] Preferably, the adduct is prepared in only one step in a one-pot reaction. This method is particularly easy and fast.

[0126] Preferably, the weight ratio between the polyether epoxy resin and the liquid aromatic epoxy resin is in the range of 30 / 70 to 80 / 20, preferably 50 / 50 to 75 / 25.

[0127] Preferably, the weight ratio between the polyetheramine and the polyalkyleneamine is 30 / 70 to 80 / 20, preferably 50 / 50 to 75 / 25.

[0128] Preferably, the weight ratio between the arylaliphatic or cycloaliphatic amine and the combined polyetheramine plus polyalkyleneamine is in the range of 5 / 95 to 40 / 60, preferably 10 / 90 to 30 / 70.

[0129] The preferred weight ratios contribute to low viscosity and a good balance of hydrophilicity and hydrophobicity.

[0130] Preferably, after the reaction between the amine and the epoxy resin is complete, the adduct is diluted with a first portion of water. Using this first portion of water, the adduct is preferably diluted to a solids content of 55 - 90 wt%, preferably 60 - 80 wt%. In this way, the adduct is storage-stable and easy to use as part of an aqueous hardener component for epoxy resins.

[0131] Preferably, the aqueous hardener component contains additional water.

[0132] It may be advantageous if the multicomponent composition preferably contains at least one promoter for the reaction between an amine and an epoxide in the cured component (B). Such promoters for the reaction between an amine and an epoxide are in particular acids or substances that can be hydrolyzed to an acid, in particular carbonic acids such as acetic acid, benzoic acid, salicylic acid, 2-nitrobenzoic acid, lactic acid, organic sulfonic acids such as methanesulfonic acid, p-toluenesulfonic acid or 4-dodecylbenzenesulfonic acid, esters of sulfonic acids, other organic or inorganic acids such as phosphoric acid, or the aforementioned acids and esters; nitrates, for example in particular calcium nitrate; tertiary amines such as 1,4-diazabicyclo[2.2.2]octane, benzyldimethylamine, α-methylbenzyldimethylamine, triethanolamine, dimethylaminopropylamine, imidazoles such as N-methylimidazole, N-vinylimidazole or 1,2-dimethylimidazole, salts of these tertiary amines; quaternary ammonium salts, such as benzyltrimethylammonium chloride; amidines, such as 1,8-diazabicyclo[5.4.0]undec-7-ene; guanidines, such as 1,1,3,3-tetramethylguanidine; phenols, such as bisphenols, phenolic resins or Mannich bases, such as 2-(dimethylaminomethyl)phenol, 2,4,6-tris(dimethylaminomethyl)phenol or polymers from phenol, formaldehyde and N,N-dimethyl-1,3-propanediamine, phosphites such as diphenyl or triphenyl phosphite, or thiol-functional compounds.

[0133] Preferably, the multicomponent composition, preferably in the cured component (B), contains 0.1 - 2.0% by weight, preferably 0.2 - 1.0% by weight, more preferably 0.4 - 0.8% by weight of at least one promoter for the reaction between an amine and an epoxide, preferably selected from acids, nitrates, tertiary amines and Mannich bases, particularly preferably selected from salicylic acid, calcium nitrate and 2,4,6-tris(dimethylaminomethyl)phenol, most preferably 2,4,6-tris(dimethylaminomethyl)phenol, based on the total weight of the multicomponent composition.

[0134] In addition to the amine-functional adduct, the cured component (B) may contain at least one further amine. However, preferably the cured component (B) contains less than 10% by weight, preferably less than 5% by weight, more preferably less than 1% by weight of at least one further amine, based on the total weight of the cured component (B), said further amine preferably being selected from IPDA, MXDA and polyoxypropylene diamines or polyoxypropylene triamines with an average molecular weight Mn in the range from 200 to 500 g / mol. Most preferably, the cured component (B) does not contain any further amines.

[0135] The cured component (B) may optionally contain one or more other additives. Suitable additives will be described further below.

[0136] The multi-component composition contains 15 - 35% by weight of at least one filler, preferably an inorganic filler, based on the total weight of the multi-component composition. Preferably, the at least one filler is contained in the curing component (B). An amount less than 15% by weight has the disadvantage of a poor surface structure and visual appearance of the cured composition. This can be seen, for example, in the comparison of compositions E1 and E7 - 9 with Ref.2. An amount greater than 35% by weight has the disadvantage of significantly reduced processability.

[0137] Preferably, based on the total weight of the multi-component composition, the multi-component composition contains 17.5 - 32.5% by weight, preferably 20 - 30% by weight, of at least one filler, preferably an inorganic filler. This range has the advantages of improved processability and a better surface structure and visual appearance of the cured composition. This can be seen, for example, in the comparison of composition E1 with E7 - 9 and Ref.2.

[0138] The inorganic filler is preferably selected from silicon compounds such as silica, silicates, and precipitated and pyrogenic silica; metal carbonates such as calcium carbonate or dolomite; metal sulfates such as calcium sulfate (gypsum) and barium sulfate; and clay minerals such as kaolin, glass, and ceramic materials, preferably silicon compounds, more preferably silica, and most preferably quartz powder.

[0139] The silica can be, for example, quartz, preferably in the form of quartz powder. The silicate can be, for example, talc, mica, or wollastonite. The sulfate can be, for example, heavy spar (barium sulfate). Mixtures of different fillers and / or different fractions of fillers having different sizes can also be used. The filler can be in a conventional form. More particularly, powders are preferably used.

[0140] The filler used preferably has a particle size of, for example, 1 - 200 μm, especially 10 - 100 μm. The particle size of the filler can be determined by sieve analysis or by microscopic analysis, preferably by microscopic analysis.

[0141] The curing component (B) can also contain one or more additional additives. Examples are auxiliaries commonly used in the flooring industry, such as dispersants and wetting agents.

[0142] Based on the total weight of the multi-component composition, the multi-component composition preferably contains 26.0 - 30.5% by weight, preferably 27.0 - 30.0% by weight, more preferably 28.0 - 29.0% by weight of water. This range has the advantages of improved processability, improved opacity of the cured composition, and a better visual appearance of the cured composition. This can be seen, for example, in the comparison of composition E1 with E2 and E3.

[0143] It is further advantageous if the weight ratio of the water present in the binder component (A) to the water present in the curing component (B) is from 0.4 to 1.1, preferably from 0.5 to 0.9, most preferably from 0.6 to 0.8.

[0144] Based on the total weight of the multi-component composition, the multi-component composition preferably contains from 2.75 to 15% by weight, preferably from 4 to 12% by weight, more preferably from 5 to 10% by weight, most preferably from 6 to 9% by weight of at least one pigment, preferably an inorganic pigment. Preferably, at least one pigment is present in the curing component (B). This range has the advantage of improving the opacity of the cured composition. This can be seen, for example, in the comparison of compositions E1 and E10 with E11 - 12.

[0145] The pigment can be an inorganic or an organic pigment. Examples of inorganic pigments are titanium dioxide, carbon black, bismuth pigments, iron oxide pigments, chromium oxide, mixed phase oxide pigments, Prussian blue, ultramarine, cobalt pigments and chromate pigments. Examples of organic pigments are azo pigments and polycyclic pigments such as copper phthalocyanine, quinacridone, diketopyrrolopyrrole, perylene, isoindoline, dioxazine and indanthrone pigments.

[0146] Preferably, the multi-component composition contains two or more different pigments. Preferably, one of the pigments is titanium dioxide and the second or additional pigment is another pigment. Preferably, the weight ratio of the total amount of titanium dioxide to the sum of the amounts of the other pigments is from 2 to 35, preferably from 5 to 30, more preferably from 15 to 27.5.

[0147] It may also be advantageous if the stoichiometric ratio of amine functional groups to epoxy functional groups in the multi-component composition is from 0.90:1 to 1.30:1, preferably from 1.00:1 to 1.20:1, more preferably from 1.05:1 to 1.15:1.

[0148] Other optional additives which may in particular be present in the binder component (A) and / or the curing component (B), but which may also optionally be present in one or more other components, are additives commonly used in the art, such as stabilizers against heat, light or UV radiation; flame retardant substances and biocides.

[0149] The invention also relates to a method for preparing a coating, preferably a floor coating, having the above multi-component composition, wherein the method comprises the following method steps:

[0150] a) mixing the binder component (A) and the curing component (B),

[0151] b) applying the obtained mixed composition to a substrate,

[0152] c) optionally smoothing or degassing the applied mixed composition, and

[0153] d) Cure the applied mixed composition to obtain a coating.

[0154] The application and curing of the mixed composition are advantageously carried out, for example, at a temperature in the range of 5 to 40 °C.

[0155] The above multi-component composition can be used in the said method comprising method steps a)-d) as a basis for different layer types: primer layer, scratch-resistant coating, self-leveling layer and sealing layer.

[0156] If used as a primer layer (see step I) below), the multi-component composition can be diluted with tap water if necessary.

[0157] The substrate for applying the primer layer is preferably

[0158] - concrete, mortar, cement screed, fiber cement, brick, tile, plaster, gypsum, natural stone such as granite or marble, ceramic or glass;

[0159] - repair or leveling materials based on PCC (polymer-modified cement composition) or ECC (epoxy-modified cement composition);

[0160] Most preferably concrete.

[0161] Preferably, the mixed composition is applied in a liquid state within its pot life, usually by pouring it onto the substrate and then spreading it with a tool such as a trowel, notched trowel or roller to obtain the desired dry film thickness.

[0162] If applied as a scratch-resistant coating (see step II) below), the multi-component composition can be supplemented with a thixotropic agent if necessary. In the case where the substrate is rough, uneven and / or contains pores or gaps, it is generally advisable to apply the scratch-resistant coating on top of the primer layer.

[0163] The thixotropic agent is preferably selected from urea preparations, preferably solutions of urethane in aprotic solvents; fibers and inorganic colloidal substances, preferably clay, alkaline earth metal oxides, silica aerogel, pyrogenic silica and microcrystalline mineral silicates.

[0164] When used as a self-leveling layer (see step III), additional inorganic fillers, preferably sand, can be added. The additional inorganic filler is preferably quartz sand with a particle size of 0.05 - 0.5 mm, preferably 0.1 - 0.3 mm.

[0165] If the multi-component composition is applied as a sealant layer (see step IV), preferably no additional components are added to the multi-component composition and it is applied "as is".

[0166] The above multi-component composition can be used as the basis for any of the above building layers of a floor coating system and thus has the potential to render redundant the need for a variety of commercial products at the application site and at the storage / supply location. Thus, a complete floor coating system consisting of the above different layers can be achieved with a single commercial product and optionally the separate addition of water, a thixotropic agent, and sand. As can be seen in Table 5 of the experimental section, large amounts of sand can be added to the mixed multi-component composition while still obtaining an aesthetically pleasing appearance (visual appearance, surface characteristics, and good opacity) and good workability. Table 6 of the experimental section shows that the mixed multi-component composition can be applied to a thickness greater than 3 mm without any crack formation.

[0167] Therefore, preferably, the method comprises the following method steps:

[0168] Step I), which comprises steps a)-d), wherein optionally before or during step a), preferably during step a), preferably with stirring, additional water is added to obtain a mixed composition, preferably an amount of additional water based on the mixture obtained in step a) of 1-20% by weight, more preferably 5-10% by weight;

[0169] Optionally, step II), which comprises steps a)-d), wherein optionally before or during step a), preferably during step a), preferably while stirring, a thixotropic agent is added to obtain a mixed composition, preferably an amount of thixotropic agent based on the mixture obtained in step a) of 0.5-5% by weight, more preferably 1-3% by weight;

[0170] Optionally, step III), which comprises steps a)-d), wherein optionally before, during, or after step a), preferably after step a) (but before step b), preferably while stirring, additional inorganic filler, preferably sand, is added to obtain a mixed composition, preferably an amount of additional inorganic filler based on the mixture obtained in step a) of 80-150% by weight;

[0171] Step VI), which comprises steps a)-d), wherein preferably before or during step a), preferably during step a), no additional components are added to the mixture obtained in step a) to obtain a mixed composition.

[0172] Even more preferably, in the following method steps:

[0173] In step I), after step d), a coating with a thickness of 0.05-0.2 mm, preferably 0.1-0.15 mm, is obtained;

[0174] Optional step II) After step d), a coating with a thickness of 0.15 - 0.5 mm, preferably 0.25 - 0.35 mm, is obtained; and

[0175] Optional step III) After step d), a coating with a thickness of 0.8 - 3.5 mm, preferably 1.0 - 2.5 mm, is obtained; and

[0176] Step IV) After step d), a coating with a thickness of 0.1 - 0.8 mm, preferably 0.2 - 0.4 mm, is obtained.

[0177] Preferably, in all the mentioned method steps I) - IV), a multi - component composition containing the same components and their amounts is used, based on the total weight of the multi - component composition, without considering the components optionally added before step b) in method steps I) - IV). This allows for the production of a complete floor coating system consisting of the above - mentioned different layers, where a single commercially available product and optionally added water, thixotropic agent, and sand are used respectively.

[0178] The present invention also relates to a coating obtainable by the above method, especially a floor coating.

[0179] The present invention also relates to the use of the above multi - component composition as a coating, especially a floor coating. Examples

[0180] The following examples illustrate the invention without limiting it.

[0181] "AHEW" means amine hydrogen equivalent.

[0182] "EEW" means epoxy group equivalent weight.

[0183] Chemicals not otherwise specified are from Sigma - Aldrich Chemie GmbH.

[0184] Viscosity is measured at speed 5 with a Brookfield viscometer with a No. 3 rotor.

[0185] Preparation of amine-functional adducts:

[0186] Substances used:

[0187] D - 400: Polyoxypropylenediamine, average molecular weight Mn 430 g / mol, AHEW is 115 g / mol, equivalent of each primary amine group is 230 g / mol, from Huntsman

[0188] TEPA: Tetraethylenepentamine, AHEW 30 g / mol, equivalent weight per primary amine group 95 g / mol, industrial grade, from Huntsman

[0189] MXDA: 1,3 - Bis(aminomethyl)cyclohexane, AHEW 34 g / mol, equivalent of each primary amine group 68 g / mol, from Mitsubishi Gas Chem

[0190] F 704: Polypropylene glycol diglycidyl ether, EEW 330 g / mol, from EMS - Chemie

[0191] DY - F: Polypropylene glycol diglycidyl ether, EEW 475 g / mol, from Huntsman

[0192] D.E.R. TM 358: Bisphenol A / F diglycidyl ether containing hexanediol diglycidyl ether, EEW 180 g / mol, from Dow

[0193] EP 384w: Solid epoxy resin dispersed in water, solids content 60 wt%, EEW 980 g / mol (including water), from Allnex

[0194] DY - P: p - tert - Butylphenyl glycidyl ether, EEW 233 g / mol, from Huntsman

[0195] Adduct B1:

[0196] Take 20.33 wpt D - 400, 9.93 parts by weight (wpt) of TEPA, 5.92 wpt of MXDA and 4.59 wpt EP 384w and place them in a round - bottom flask and heat to 70 °C. Then, slowly add 6.16 wpt F 704, 13.62 wpt DY - F and 11.29 wpt of D.E.R. TM 358 premix, and keep the temperature in the flask below 85 °C. After that, the reaction mixture is kept at 80 - 85 °C for 2 hours, then 26.14 wpt of tap water and 2.02 wpt of acetic acid are added, each added with good stirring. The resulting amine - functional adduct is cooled to room temperature. Its solids content is 72 wt%, the viscosity at 20 °C is 3.5 Pa.s, the calculated AHEW is 176.3 g / eq and it has a transparent light yellow appearance.

[0197]

[0198] Table 1: Composition (in parts by weight) and characteristics of adduct B1

[0199] Preparation of two-component compositions:

[0200] Substances used:

[0201]

[0202]

[0203] Table 2

[0204] Prepare the two-component composition according to Table 3 below. Tables 4, 5 and 6 show the experimental results.

[0205] Preparation of component B:

[0206] With stirring by a dissolver, add the additional raw materials as shown in Table 2 to the water of the initial charge in a suitable container.

[0207] Preparation of mixed compositions:

[0208] Mix components A and B with a paddle stirrer for 3 minutes. The stoichiometric ratio of amine functionality to epoxy functionality for all compositions is 1.11:1.0. Test the mixed compositions E1 - E12 and Ref.1 - Ref.2 as follows:

[0209] Processability (at 23 °C (RT))

[0210] Processability is determined by the user during application immediately after mixing (referred to as "processability (immediately)") and 20 minutes after mixing (referred to as "processability (after 20 minutes)"). The key factor is the resistance with which the coating can be distributed. The aim is to be able to apply a 2 mm thick layer with a toothed spatula with a proportional force consumption and within a suitable time. The control example is a self-leveling coating system available on the market and its application performance.

[0211] Use the following scale:

[0212] Very good = The surface is flat and no roller is required.

[0213] Good = Almost no roller is required to level the surface.

[0214] Medium = Appropriate use of a roller is required to level the surface.

[0215] Insufficient = It is difficult to level the surface even with a roller.

[0216] Visual appearance (at 23 °C (RT))

[0217] Evaluate the visual appearance of the coating applied by the above method (toothed spatula, layer of 2 mm thickness, 23 °C).

[0218] An important aspect of the evaluation is the degree of uniformity of surface curing. Adverse surface defects considered in this regard are spots, surface granularity, residual ripples and the resulting surface disturbances to appearance and pinholes. Pinholes are small holes remaining in the surface.

[0219] Use the following scale:

[0220] Very good = flawless surface

[0221] Good = surface with minor defects

[0222] Medium = surface with some remaining roller marks that are slightly visible.

[0223] Insufficient = uneven surface with many clearly visible remaining roller marks.

[0224] Addition of different amounts of sand for evaluation of the resulting self-leveling layer

[0225] As shown in Table 5, different amounts of sand (quartz sand, 0.1 - 0.3 mm) were added to the mixed composition E1 and mixed with a paddle stirrer for 1.5 minutes. The mixed composition was applied with a toothed spatula, a layer of 1 - 3 mm thickness (depending on the amount of quartz sand added) was applied at 23 °C and cured. The processability and visual appearance of the resulting coating were evaluated as described above.

[0226] Crack formation

[0227] Evaluate crack formation in Samples A - D in Table 6. By the above method (toothed spatula, thickness of the resulting layer as shown in Table 6, in mm, 23 °C), different amounts of composition E1 were applied and crack formation in the cured composition was analyzed. The appearance of cracks was rated as "Yes" or "No" under "Crack formation".

[0228] Surprisingly, it was found that composition E1 could be applied in an amount of 7000 g / m 2 without forming cracks.

[0229] Measurement of glossiness

[0230] Gloss was measured at an incident angle of 85° in accordance with EN ISO 2813. After curing for 24 hours at 23 °C and 50% relative air humidity, the film thickness of all samples was 2 mm.

[0231] Use the following scale:

[0232] 5 = 80 - 100

[0233] 4 = 65 - 80

[0234] 3 = 50 - 65

[0235] 2 = 30 - 50

[0236] 1 = 0 - 30

[0237] Opacity

[0238] Samples for measuring color and evaluating opacity were prepared by applying a coating onto a black / white contrast cardboard using a film applicator.

[0239] The mixed composition was prepared as described above and applied onto a black / white contrast cardboard placed on a flat surface. By means of a film applicator, the mixed composition was evenly distributed in a slow and steady manner at 23 °C and 50% relative air humidity to obtain a 200-μm thick wet layer on the black / white contrast cardboard.

[0240] The following scale was used to quantify opacity:

[0241] Very good = The substrate / white-black contrast card was not seen under the coating with a wet thickness layer of 200 μm.

[0242] Good = The substrate / white-black contrast card was slightly seen under the coating with a wet thickness layer of 200 μm.

[0243] Moderate = The substrate / white-black contrast card was moderately seen under the coating with a wet thickness layer of 200 μm.

[0244] Insufficient = The substrate / white-black contrast card was clearly seen under the coating with a wet thickness layer of 200 μm.

[0245]

[0246]

[0247]

Claims

1. A multi-component composition, comprising: A) A binder component (A) comprising at least one epoxy resin, B) A curing component (B) comprising at least one amine-functional adduct, which is the reaction product of: (a) At least one polyetheramine, (b) At least one polyalkyleneamine, (c) At least one arylaliphatic or cycloaliphatic amine, (d) At least one polyether epoxy resin, and (e) At least one aromatic liquid epoxy resin, characterized in that - The multi-component composition contains 9-22% by weight, based on the total weight of the multi-component composition, of at least one amine-functional adduct, and - The multi-component composition contains 15-35% by weight, based on the total weight of the multi-component composition, of at least one filler, preferably an inorganic filler.

2. The multi-component composition according to claim 1, characterized in that, The multi-component composition contains 26.0-30.5 wt%, preferably 27.0-30.0 wt%, more preferably 28.0-29.0 wt% of water, based on the total weight of the multi-component composition.

3. The multi-component composition according to any one of the preceding claims, characterized in that, The multi-component composition contains 11-20% by weight, preferably 13-17.5% by weight, of the at least one amine-functional adduct, based on the total weight of the multi-component composition.

4. The multi-component composition according to any one of the preceding claims, characterized in that, The multi-component composition comprises 17.5-32.5 wt%, preferably 20-30 wt%, of at least one filler, preferably an inorganic filler, based on the total weight of the multi-component composition.

5. The multi-component composition according to any one of the preceding claims, characterized in that, The multi-component composition contains 2.75-15% by weight, preferably 4-12% by weight, more preferably 5-10% by weight, most preferably 6-9% by weight, of at least one pigment, preferably an inorganic pigment, based on the total weight of the multi-component composition.

6. The multi-component composition according to any one of the preceding claims, characterized in that, The polyetheramine is a polyoxypropylene diamine having an average molecular weight Mn of 200 to 2000 g / mol, preferably 200 to 500 g / mol.

7. The multi-component composition according to any one of the preceding claims, characterized in that, The polyalkyleneamine is an amine of formula (I), wherein x is an integer from 1 to 6, and B are independently of each other C2-C6 alkylene.

8. The multi-component composition according to any one of the preceding claims, characterized in that, The arylaliphatic or cycloaliphatic amine has two primary amine groups, no secondary or tertiary amine groups, and has a molecular weight in the range of 100-300 g / mol.

9. The multi-component composition according to any one of the preceding claims, characterized in that, The weight ratio of the water present in the binder component (A) to the water present in the curing component (B) is 0.4-1.1, preferably 0.5-0.9, most preferably 0.6-0.

8.

10. The multi-component composition according to any one of the preceding claims, characterized in that, Based on the total weight of the multi-component composition, the multi-component composition contains 20-45% by weight, in particular 25-40% by weight, preferably 27.5-37.5% by weight, of the binder component (A).

11. The multi-component composition according to any one of the preceding claims, characterized in that, The stoichiometric ratio of the amine functional groups to the epoxy functional groups is 0.90:1 - 1.30:1, preferably 1.00:1 - 1.20:1, more preferably 1.05:1 - 1.15:

1.

12. The multi-component composition according to any one of the preceding claims, characterized in that, The multi-component composition contains 0.1% to 2.0% by weight, preferably 0.2% to 1.0% by weight, more preferably 0.4% to 0.8% by weight, of at least one promoter for the reaction between the amine and the epoxide, preferably selected from acids, nitrates, tertiary amines and Mannich bases, particularly preferably selected from salicylic acid, calcium nitrate and 2,4,6-tris(dimethylaminomethyl)phenol, most preferably 2,4,6-tris(dimethylaminomethyl)phenol, based on the total weight of the multi-component composition.

13. A method for preparing a coating, preferably a floor coating, using the multi-component composition according to any one of claims 1 to 12, wherein the method comprises the following method steps: a) Mixing the binder component (A) and the curing component (B), b) Applying the obtained mixed composition to a substrate, c) Optionally smoothing or degassing the applied mixed composition, and d) Curing the applied mixed composition to obtain a coating.

14. The method according to claim 13, wherein the method comprises the following method steps: Step I), which comprises steps a)-d), wherein optionally before or during step a), preferably during step a), preferably while stirring, additional water is added to obtain a mixed composition, preferably in an amount of 1-20% by weight, more preferably 5-10% by weight, based on the mixture obtained in step a); Optionally, Step II), which comprises steps a)-d), wherein optionally before or during step a), preferably during step a), preferably while stirring, a thixotropic agent is added to obtain a mixed composition, preferably in an amount of 0.5-5% by weight, more preferably 1-3% by weight, based on the mixture obtained in step a); Optionally, Step III), which comprises steps a)-d), wherein optionally before, during or after step a), preferably after step a) (but before step b), preferably while stirring, additional inorganic filler, preferably sand, is added to obtain a mixed composition, preferably adding 80-150% by weight of additional inorganic filler based on the mixture obtained in step a); Step VI) comprises steps a)-d), wherein preferably before or during step a), preferably during step a), no additional components are added to the mixture obtained in step a) to obtain a mixed composition.

15. The method according to claim 14, wherein in the following method steps: In Step I) after step d), a coating with a thickness of 0.05-0.2 mm, preferably 0.1-0.15 mm, is obtained; and In an optional step II) after step d), a coating with a thickness of 0.15-0.5 mm, preferably 0.25-0.35 mm, is obtained; and In an optional step III) after step d), a coating with a thickness of 0.8-3.5 mm, preferably 1.0-2.5 mm, is obtained; and In step IV) after step d), a coating with a thickness of 0.1 - 0.8 mm, preferably 0.2 - 0.4 mm, is obtained.

16. The method according to claims 14 - 15, wherein in steps I) - IV) of all method steps, a multi - component composition containing the same components and their amounts is used, and based on the total weight of the multi - component composition, components optionally added before step b) are not considered in steps I) - IV) of the method steps.

17. A coating, in particular a floor coating, obtainable by the method as claimed in claims 13 - 16.

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