DE102022113019A1 - Coating material, use of the coating material for coating components, method for coating components with the coating material and components coated with the coating material - Google Patents

Abstract

A coating material is provided for producing a coating on a surface made of a metal, an alloy, a plastic or a composite material, the coating material having at least: 10 to 70% by weight of one or more CH-acidic compounds A; 4 to 40% by weight of one or more vinylogous carbonyl compounds B; 0.1 to 15% by weight of one or more latent basic catalysts C; 0.00001 to 10% by weight of one or more light stabilizers; 0.0001 to 15% by weight of one or more open time extenders; 0.00001 to 20% by weight of one or more pot life extenders; 0.00001 to 70% by weight of one or more inorganic and/or organic pigments and 0.1 to 40% by weight of one or more corrosion inhibitors, each based on the total amount of the coating material in which the open time extender has a pKa value between 4 and 14 and is either a phenol and/or quinone-based compound or is a mixture of phenol and/or quinone-based compounds, as well as coatings that can be produced, methods for coating with the coating material and components coated therewith.

Description

The invention relates to improved coating materials based on RMA systems, which crosslink using a classic Michael addition, as well as coatings that can be produced therefrom, methods for coating with such a coating material and components coated therewith.

Such coating materials are, for example, from EP 3 286 272 B1 known, the disclosure of which is incorporated into this description.

However, the advantageous properties of the from the EP 3 286 272 B1 known coating system is largely based on the use of NH-based substances as open time extenders to extend the open time, ie the period of time in which a coating material film applied to a surface can still be corrected without affecting the leveling properties. These substances pose risks to the environment and people, particularly with regard to environmental, physiological and carcinogenic compatibility.

The object of the invention is therefore to provide a coating material, a coating system and coatings that can be produced therefrom, methods for coating with such coatings and components coated therewith with improved environmental, physiological and carcinogenic compatibility; namely for surfaces made of metal, an alloy, a plastic or a composite material.

This object is achieved by a coating material with the features of patent claim 1, its use for producing a coating system with the features of patent claim 20, a method for coating a component with the features of patent claim 21 and a component coated therewith with the features of patent claim 25 Advantageous embodiments of the invention are the subject of the respective dependent claims.

• -10 bis 70 Gew.-% ein oder mehrere CH-acide Verbindungen A,
• - 4 bis 40 Gew.-% ein oder mehrere vinyloge Carbonylverbindungen B,
• - 0,1 bis 15 Gew.-% ein oder mehrere latent- basische Katalysatoren C,
• - 0,00001 bis 10 Gew.-% ein oder mehrere Lichtschutzmittel,
• - 0,0001 bis 15 Gew.-% ein oder mehrere Offenzeit- Verlängerer,
• - 0,00001 bis 20 Gew.-% ein oder mehrere Topfzeit- Verlängerer,
• - 0,00001 bis 70 Gew.-% ein oder mehrere anorganische und/oder organische Pigmente und
• - 0,1 bis 40 Gew.-% ein oder mehrere Korrosionsschutzmittel,

jeweils bezogen auf die Gesamtmenge des Beschichtungsstoffs.The coating material according to the invention for surfaces made of a metal, an alloy, a plastic or a composite material has at least the following components:

• -10 to 70% by weight of one or more CH-acidic compounds A,
• - 4 to 40% by weight of one or more vinylogous carbonyl compounds B,
• - 0.1 to 15% by weight of one or more latent basic catalysts C,
• - 0.00001 to 10% by weight of one or more light stabilizers,
• - 0.0001 to 15% by weight of one or more open time extenders,
• - 0.00001 to 20% by weight of one or more pot life extenders,
• - 0.00001 to 70% by weight of one or more inorganic and/or organic pigments and
• - 0.1 to 40% by weight of one or more corrosion inhibitors,

each based on the total amount of coating material.

The coating materials according to the invention are therefore RMA systems which contain one or more CH-acidic compounds A, one or more vinylogous carbonyl compounds B and one or more catalysts C. Other ingredients include light stabilizers, pot life extenders, open time extenders, inorganic and/or organic pigments and corrosion inhibitors.

• - Lichtschutzmittel Additive und Hilfsstoffe, die Beschichtungen gegen den Einfluss von UV-Licht schützen, insbesondere einen durch UV-Strahlung verursachten Polymerabbau verhindern oder verzögern;
• - Topfzeit-Verlängerer Additive und Hilfsstoffe, die als Bestandteil des verarbeitungsfertig angemischten Beschichtungsstoffs die Aushärtung des Beschichtungsstoffs vor der Applikation verzögern und während der Applikation verdampfen, so dass die Härtung des applizierten Beschichtungsstoffs nicht beeinträchtigt, insbesondere nicht verlängert, wird;
• - Offenzeit-Verlängerer Additive und Hilfsstoffe, die auch nach der Applikation im Beschichtungsstoff verbleiben und dessen Aushärtung zur Beschichtung verzögern; sowie
• - Korrosionsschutzmittel Additive und Hilfsstoffe, welche an der Grenzfläche von Metallsubstrat und Beschichtung die Korrosion des Metalls verhindern oder zumindest verzögern.

There are

• - Light stabilizer additives and auxiliary materials that protect coatings against the influence of UV light, in particular preventing or delaying polymer degradation caused by UV radiation;
• - Pot life extenders Additives and auxiliary materials which, as part of the ready-to-use coating material, delay the curing of the coating material before application and evaporate during application, so that the hardening of the applied coating material is not impaired, in particular not prolonged;
• - Open time extenders Additives and auxiliary materials that remain in the coating material even after application and delay its curing for coating; as well as
• - Corrosion inhibitors Additives and auxiliary materials that prevent or at least delay corrosion of the metal at the interface between the metal substrate and the coating.

It is essential to the invention that the open time extender has a pKa value between 4 and 14 and is either a phenol and/or quinone-based compound or a mixture of phenol and/or quinone-based compounds. The use of such compounds, which have so far been used primarily in the field of polystyrene chemistry, in paint chemistry is surprising.

This compound is preferably a substance from the group 2-tert-butylbenzene-1,4-diol, 4-methoxyphenol, 2-methylhydroquinone, C-7-C9-branched alkyl-[3-(3,5-di-tert- butyl-4-hydroxyphenyl)]propionate or a mixture of substances from this group; Particularly preferred are 2-tert-butylbenzene-1,4-diol and 4-methoxyphenol.

These substances, which are available in particular, for example, from Solvay, have a higher resistance to the NH-based open time extenders known from the prior art: succinimides, 1, 2, 4, -triazoles, 1, 2, 3, -benzotriazoles, 5, 5 -Diphenylhydantoins, hydantoins, (RS)-3-ethyl-3-methylpyrrolidine-2, 5-dione improved environmental, physiological and carcinogenic compatibility.

Another major advantage of the open-time extenders according to the invention is that they can be contained together with the catalysts C in a catalyst component of a coating system, which can optionally contain further solvents and pot-life extenders, while the CH-acidic compound A and the vinylogenic carbon compounds B together with the light stabilizers used and at least some of the pot life extenders can be combined in a binder component that forms a base varnish. This allows the user of such a coating system to use an identical base paint component with different open times, which can be controlled by the catalyst component. This means it is up to the user how he wants to choose the open time for a given object geometry to be painted.

The compounds A and B can be used in a molar ratio A:B of 0.5:1 to 2:1, the molar amounts being based on the acidic protons of the compounds A and on the vinylogous carbonyl groups of the compounds B.

The catalysts C and compounds A can be used in a molar ratio C:A of 0.8:1 to 2.5:1, the molar amounts being based on the cation X+ of the catalyst C and the acidic protons of the compounds A.

entsprechen, wobei

• - R Wasserstoff, ein Alkyl- oder Arylrest,
• - Y ein Alkyl-, Aralkyl-, Aryl-, Alkoxy-Rest oder eine Aminogruppe und,
• - Y' ein Alkyl-, Aralkyl-, Aryl-, Alkoxy-Rest oder eine Aminogruppe ist.

Suitable CH-acidic compounds A can have the formula

correspond, where

• - R hydrogen, an alkyl or aryl radical,
• - Y is an alkyl, aralkyl, aryl, alkoxy radical or an amino group and,
• - Y' is an alkyl, aralkyl, aryl, alkoxy radical or an amino group.

Preferred CH-acidic compounds A are malonic acid esters, acetoacetic acid esters or mixtures thereof, in particular malonic acid esters with oligomeric and polymeric substituents, for example based on polyesters, polyurethanes, polyacrylates, epoxy resins, polyamides and / or polycarbonates or in particular acetoacetic acid esters with oligomeric and polymeric substituents, for example based on polyalcohols, polyvinyl alcohols, epoxy resins, hydroxy-functional polyethers, polyesters and/or polyacrylates.

Suitable vinylogous carbonyl compounds B are, for example, acrylates and/or maleates, in particular unsaturated acryloyl-functional compounds. Acrylic esters made from compounds containing 1 to 20 carbon atoms and at least 2, preferably 2 to 6, hydroxyl groups are particularly suitable.

Preference is also given to polyesters made from maleic acid, fumaric acid and/or itaconic acid or their anhydrides reacted with di- or polyvalent hydroxyl compounds, which may contain a monovalent hydroxyl or carboxyl compound. Also preferred are resins such as polyesters, polyurethanes, polyethers and/or alkyd resins which contain appropriately activated unsaturated groups such as, for example, urethane acrylates, polyether acrylates, polyfunctional polyacrylates, polyalkyl maleates and polyacrylates which are obtained from the reaction of acrylic acid with epoxy resins. Butanediol diacrylate, hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate and ditrimethylolpropane tetraacrylate and dipentaerithritol hexaacrylate as well as dipropylene glycol diacrylate and tripropylene glycol diacrylate are particularly preferred.

Worin

• - R Wasserstoff, Alkyl- oder Aralkyl- (Ar-R) oder ein Polymer ist,
• - X+ ein Alkali- oder Erdalkalimetall-Kation, insbesondere Lithium, Natrium oder Kalium ist, oder ein quaternäres Ammonium- oder Phosphoniumsalz der Formel (R')₄ Y+ ist, worin Y Stickstoff oder Phosphor ist, R' gleich oder verschieden, Wasserstoff, Alkyl-, Aral- oder Aralkyl- oder ein Polymer ist

und worin R und R' eine Ringstruktur bilden können oder ein Polymer sein können.Suitable latent basic compounds for the catalysts C are, for example, substituted carboxylic acid salts of the formula

Wherein

• - R is hydrogen, alkyl or aralkyl (Ar-R) or a polymer,
• _- Alkyl, aral or aralkyl or a polymer

and wherein R and R' may form a ring structure or may be a polymer.

R is preferably an alkyl group or an aralkyl group, particularly preferably an alkyl group with 1 to 4 carbon atoms. The carbonate group and the cation X+ can also be present on a molecule with the corresponding structure. Furthermore, R' is preferably an alkyl group, particularly preferably an alkyl group with 1 to 4 carbon atoms, particularly preferably with 3 to 4 carbon atoms.

Ammonium and/or phosphonium carbonates are preferably used. Suitable ammonium carbonates are, for example, tetrahexylammonium methyl carbonate, tetrahexylammonium hydrogen carbonate, tetradecanyltrihexylammonium methyl carbonate, tetradecyl ammonium methyl carbonate, tetrabutylammonium methyl carbonate, tetrabutylammonium ethyl carbonate, tetrabutylammonium hydrogen carbonate, tetrapropyl ammonium methyl carbonate, tetrapropyl ammonium ethyl carbonate, tetrapropyl ammonium hydrogen carbonate , benzyltrimethylammonium methylcarbonate, trihexylmethylammonium methylcarbonate or trioctylmethylammonium methylcarbonate.

Suitable light stabilizers are radical scavengers such as sterically hindered aliphatic amines, for example based on substituted 2, 2, 6, β-tetramethylpiperidines, UV absorbers such as 2-hydroxyphenylbenzotriazoles, 2-hydroxybenzophenones, 2-hydroxyphenyltriazines or oxalanilides, as well as quenchers such as organic nickel compounds and peroxide decomposers such as Thioether or phosphites. Free radical scavengers, for example sterically hindered aliphatic amines based on substituted 2, 2, 6, 6-tetramethylpiperidines, and/or UV absorbers, for example 2-hydroxyphenylbenzotriazoles, 2-hydroxybenzophenones, 2-hydroxyphenyltriazines and oxalanilides, are preferably used.

Suitable pot life extenders are short-chain alcohols that have an evaporation number below 35, preferably below 20. Alcohols with up to 6, preferably up to 4, particularly preferably up to 3 carbon atoms are particularly suitable. For example, methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol and mixtures thereof can be used.

Suitable inorganic pigments are, for example, titanium dioxide, iron oxides, chromium oxides, chromium titanates, bismuth vanadate, cobalt blue, carbon blacks, Pigment Yellow 151, Pigment Yellow 213, Pigment Yellow 83, Pig ment Orange 67, Pigment Orange 62, Pigment Orange 36, Pigment Red 170, Pigment Violet 19, Pigment Violet 23, Pigment Blue 15:3, Pigment Blue 15:6 and Pigment Green 7.

Suitable corrosion protection agents are, for example, aminocarboxylates, zinc nitroisophthalate, zinc salts of cyanuric acid, iron mica, aluminum pigments, talc, phosphates, borates, silicates, molybdates and/or chromates.

The coating material preferably contains 1 to 35% by weight of anti-corrosion agent based on the total amount of the coating material.

The coating material can also contain up to 25% by weight of one or more dispersing additives. Suitable dispersing additives are, for example, high molecular weight block copolymers with pigment-affinous groups, highly branched polyesters or acrylate-polyester copolymers with pigment-affinous groups. Dispersing additives that are preferably used are high molecular weight block copolymers with groups with pigment affinity.

The coating materials can also contain up to 60, preferably 0.00001 to 40, particularly preferably 10 to 30% by weight of fillers, the quantities referring to the total amount of the coating material. Suitable fillers are, for example, carbonates such as chalk, limestone powder, calcite, precipitated calcium carbonate, dolomite or barium carbonate, sulfates such as barite, barium sulfate or calcium sulfate, fibers from melts of glass or basalts, glass powder, glass balls and slags.

The coating materials can also contain up to 30, preferably 0.00001 to 20, particularly preferably 0.00001 to 10% by weight of matting agent, the quantities relating to the total amount of the coating material. The term matting agents refers to additives and auxiliary materials that reduce the shine of a coating or create a matt shine. Matting agents create the necessary surface structures in the coating without impairing other features and properties. Suitable matting agents are, for example, micronized amorphous silicas such as silica gels or precipitated silicas, micronized and precipitated waxes such as polyethylene waxes, polypropylene waxes, polyamide waxes or PTFE waxes, and also micronized polymers such as urea aldehyde resins.

In further embodiments, the coating materials also contain up to 50, preferably 0.00001 to 30, particularly preferably 0.00001 to 20% by weight of aprotic solvents, the quantities being based on the total amount of the
Obtain coating material. The term aprotic solvents is used below to mean solvents that do not contain any ionizable protons in the molecule. Suitable aprotic solvents are, for example, aliphatic hydrocarbons, cycloaliphatic hydrocarbons, aromatic hydrocarbons, ketones, esters, ethers, ether esters, in particular ethyl acetate, butyl acetate, acetone, n-butanone, methyl isobutyl ketone, methoxypropyl acetate and dimethyl sulfoxide and mixtures thereof.

Suitable dispersing additives are, for example, high molecular weight block copolymers with pigment-affinous groups, highly branched polyesters or acrylate-polyester copolymers with pigment-affinous groups. Dispersing additives which are preferably used are high molecular weight block copolymers with pigment-affinous groups. The coating materials according to the invention can
further contain up to 60, preferably 0.00001 to 40, particularly preferably 10 to 30% by weight of fillers, the amounts in each case referring to the total amount of the coating material. Suitable fillers are, for example, carbonates such as chalk, limestone powder, calcite, precipitated calcium carbonate, dolomite or barium carbonate, sulfates such as barite, barium sulfate or calcium sulfate, fibers from melts of glass or basalts, glass powder, glass balls and slags. Fillers used with preference are barium sulfate and/or calcium carbonate.

The coating materials according to the invention can also contain up to 30, preferably 0.00001 to 20, particularly preferably 0.00001 to 10% by weight of matting agent, the amounts in each case referring to the total amount of the coating material. The term matting agents refers to additives and auxiliary materials that reduce the shine of a coating or create a matt shine. Matting agents create the necessary surface structures in the coating without impairing other features and properties.

Suitable matting agents are, for example, micronized amorphous silicas such as silica gels or precipitated silicas, micronized and precipitated waxes such as polyethylene waxes, polypropylene waxes, polyamide waxes or PTFE waxes, and also micronized polymers such as urea aldehyde resins.

In further embodiments according to the invention, the coating materials also contain up to 50, preferably 0.00001 to 30, particularly preferably 0.00001 to 20% by weight of aprotic solvents, the amounts in each case referring to the total amount of the coating material. The term aprotic solvents is used below to mean solvents that do not contain any ionizable protons in the molecule. Suitable aprotic solvents are, for example, aliphatic hydrocarbons, cycloaliphatic hydrocarbons, aromatic hydrocarbons, ketones, esters, ethers, ether esters, in particular ethyl acetate, butyl acetate, acetone, n-butanone, methyl isobutyl ketone, methoxypropyl acetate and dimethyl sulfoxide and mixtures thereof.

Due to their properties, the coating materials according to the invention can be used for surfaces made of metal, an alloy, a plastic or a composite material, in particular for the production of single-layer paint systems. They are also suitable for use for coating large components with such a surface, in particular for coating large-area metal components such as those used for bodywork for construction and agricultural machinery.

The present invention also relates to methods for coating components with a surface made of a metal, an alloy, a plastic or a composite material. The methods according to the invention include the steps (a) applying the coating material according to the invention to the surface of a substrate and (b) curing the applied coating material for 0.5 to 12, preferably 0.5 to 6, particularly preferably 0.5 to 4 hours at temperatures between 5 to 50, preferably 15 to 40, particularly preferably 20 to 35 ° C.

The coating materials according to the invention surprisingly produce surfaces of high quality even when applied using hydraulic high-pressure spraying (Airless), airless spraying with air support (Airmix) and pneumatic spraying or compressed air spraying. All spraying processes can also be used with electrostatic support.

In a further embodiment of the method, all components of the coating material used are mixed before application. The mixing can be done manually or mechanically.

Since the coating materials according to the invention can be cured at room temperature, they are particularly suitable for coating large components with a surface made of a metal, an alloy, a plastic or a composite material, such as those used, for example, in the construction of agricultural and construction machinery. For example, they can be used to coat body parts, roofs, doors, chassis panels, lattice masts, booms, grippers, shovels, cutters or plowshares.

An example of a coating material according to the invention, which is designed as a two-component system, has the following composition: substance Amount [wt.%] Component 1 (base varnish) Aliphatic urethane acrylate, e.g. Syntholux 271 UA 17 Hexanediol diacrylate, e.g. Laromer HDDA 8th Polyethersiloxane compound, e.g. Tego Foamex 815 N 1.5 Phosphoric acid polyester e.g. disperbyk 110 2 Titanium dioxide, e.g. Tiona 696 20 Barium sulphate, e.g. blanc fixe ZB 10 Malonate-functional polyester with a concentration of acidic protons of 5.66 mol/kg 25 based on the solvent-free polyester, 85% in butyl acetate, e.g. Acure 510-200 Ethanol 4 Butanol 1 Butyl acetate 2.5 Bis(1,2,2,6, 6-pentamethyl-4-piperidinyl sebacate, e.g. Tinuvin 292 1 Component 2 (hardener) Catalyst solution, e.g. Acure 500 3 2-tert-butylbenzene-1,4-diol, e.g. YANTQ TBHQ 1 Butyl acetate 4

The coating materials are manufactured in accordance with the paint technology standards that are known and familiar to those skilled in the art.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 3286272 B1 [0002, 0003]

Claims (25)

Coating material for producing a coating on a surface made of a metal, an alloy, a plastic or a composite material, the coating material having at least -10 to 70% by weight of one or more CH-acidic compounds A, -4 to 40 % by weight of one or more vinylogous carbonyl compounds B, - 0.1 to 15% by weight of one or more latent basic catalysts C, - 0.00001 to 10% by weight of one or more light stabilizers, - 0.0001 to 15% by weight of one or more open time extenders, - 0.00001 to 20% by weight of one or more pot life extenders, - 0.00001 to 70% by weight of one or more inorganic and/or organic pigments and - 0.1 to 40% by weight of one or more corrosion inhibitors, each based on the total amount of the coating material, characterized in that the open time extender has a pKa value between 4 and 14 and either a phenol and/or quinone-based compound is or is a mixture of phenol and/or quinone based compounds. coating material Claim 1 , characterized in that the one or more CH-acidic compounds A of the formula

correspond, where R is hydrogen, an alkyl or aryl radical, Y is an alkyl, aralkyl, aryl, alkoxy radical or an amino group and, Y 'is an alkyl, aralkyl, aryl, alkoxy radical or an amino group . coating material Claim 1 or 2 , characterized in that the one or more vinylogous carbonyl compounds B are selected from acrylates and/or maleates. Coating material according to one of the preceding claims, characterized in that the one or more light stabilizers are selected from the group containing radical scavengers, UV absorbers, quenchers and peroxide decomposers. Coating material according to one of the preceding claims, characterized in that the one or more pot life extenders are selected from the group containing alcohols with up to 6 carbon atoms and evaporation numbers below 35. Coating material according to one of the preceding claims, characterized in that the one or more corrosion protection agents are selected from the group containing tannin derivatives, basic sulfonates, nitrocarboxylates, zinc salts of organic nitrogen acids, corrosion protection pigments and active pigments, each based on the total amount of coating material. Coating material according to one of the preceding claims, characterized in that the catalysts C contain one or more substituted carboxylic acid salts of the formula

are, in which R is hydrogen, alkyl or aralkyl or a polymer radical, R' is the same or different, hydrogen, alkyl, aral or aralkyl or a polymer and wherein R and R' form a ring structure or are a polymer. Coating material according to one of the preceding claims, characterized in that the light stabilizers are substituted 2,2,6,6-tetramethylpiperidines, 2-hydroxyphenylbenzotriazoles, 2-hydroxybenzophenones, 2-hydroxyphenyltriazines, oxalanilides, organic nickel compounds, thioethers and/or phosphites. Coating material according to one of the preceding claims, characterized in that the coating material contains 0.5 to 5, preferably 1 to 3% by weight of light stabilizer based on the total amount of the coating material. Coating material according to one of the preceding claims, characterized in that the pot life extenders are alcohols with up to 4 carbon atoms. Coating material according to one of the preceding claims, characterized in that the coating material contains 0.01 to 15% by weight of pot life extender based on the total amount of the coating material. Coating material according to one of the preceding claims, characterized in that the open time extender is a substance from the group 2-tert-butylbenzene-1,4-diol, 4-methoxyphenol, 2-methylhydroquinone, C-7-C9-branched alkyl-[ 3-(3,5-di-tert-butyl-4-hydroxyphenyl)]propionate or a mixture of substances from this group. Coating material according to one of the preceding claims, characterized in that the coating material contains 0.001 to 10% by weight of open time extender based on the total amount of the coating material. Coating material according to one of the preceding claims, characterized in that the pigments are selected from the group containing titanium dioxide, iron oxides, chromium oxides, chromium titanates, bismuth vanadate, cobalt blue, carbon black, Pigment Yellow 151, Pigment Yellow 213, Pigment Yellow 83, Pigment Orange 67, Pigment Orange 62, Pigment Orange 36, Pigment Red 170, Pigment Violet 19, Pigment Violet 23, Pigment Blue 15:3, Pigment Blue 15:6 and Pigment Green 7. Coating material according to one of the preceding claims, characterized in that the corrosion inhibitors are aminocarboxylates, zinc nitroisophthalate, zinc salts of cyanuric acid, iron mica, aluminum pigments, talc, phosphates, borates, silicates, molybdates and/or chromates. Coating material according to one of the preceding claims, characterized in that the coating material contains 1 to 35% by weight of corrosion protection agent based on the total amount of the coating material. Coating material according to one of the preceding claims, characterized in that the coating material further contains up to 25% by weight of one or more dispersing additives. Coating material according to one of the preceding claims, characterized in that the coating material further comprises up to 60% by weight of one or more fillers. Coating material according to one of the preceding claims, characterized in that the coating material further contains up to 50% by weight of one or more aprotic solvents. Coating material according to one of the preceding claims, characterized in that the coating material further contains up to 10% by weight of one or more matting agents. Use of the coating material according to one of the Claims 1 until 20 for producing a single-layer coating system for surfaces made of a metal, an alloy, a plastic or a composite material. Method for coating a component with a surface made of a metal, an alloy, a plastic or a composite material, comprising the steps (a) Apply a coating material according to one of the Claims 1 until 20 on a substrate and (b) curing the applied layer at temperatures between 5 and 50 ° C over a period of 0.5 to 12 hours. Procedure according to Claim 22 , characterized in that the coating material is applied in step (a) by means of hydraulic or pneumatic spraying processes. Procedure according to one of the Claims 22 or 23 , characterized in that in step (a) the coating material is applied to a pretreated substrate. Component with a surface made of a metal, an alloy, a plastic or a composite material, coated with a coating made from a coating material according to one of the Claims 1 until 20 .