Matte, washable coating composition and use thereof

Abstract

The present invention relates to a coating composition that provides high resistance to dirt, friction and polishing, due to the presence of mineral fillers and polymeric dispersions that promote resistance to polishing and meet wet abrasion resistance, said composition comprising: (a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof; (b) at least one silica-based matting agent; (c) at least one non-ionic aqueous emulsion selected from paraffin wax and high-density polyethylene wax or a mixture thereof; and (d) at least one additional component selected from the group consisting of solvent, dispersing agent, binding polymer and mixtures thereof. The present invention also relates to the use of the composition for the preparation of a washable matte acrylic paint product and matte acrylic paints containing the composition as claimed herein.

Description

MATTE, WASHABLE COATING COMPOSITION AND USE THEREOFFIELD OF THE INVENTION

[0001] The present invention relates to a coating composition that provides high resistance to dirt, friction and polishing, due to the presence of mineral fillers and polymeric dispersions that promote resistance to polishing and meet wet abrasion resistance.

[0002] The present invention also relates to the use of the composition for application in matte acrylic paints both indoors and outdoors and matte paints containing the coating composition of the present invention.BACKGROUND OF THE INVENTION

[0003] Matte (low gloss) finish paint coatings are popular due to their excellent physical and aesthetic properties. These paint coatings are not glossy, which helps to disguise defects and irregularities on the walls or surfaces to which they are applied, providing a uniform appearance and allowing touch-ups to be made to the paint without the irregularities being highlighted. However, current matte finish paint compositions used in surface painting have the disadvantage of accumulating dirt and stains, in addition to having a tendency for algae and fungus growth compared to satin or semi- gloss finish paints. Therefore, matte finish requires cleaning of the walls over time, which can occur through washing or polishing, where the occurrence of stains or scratches after washing has been observed.

[0004] Matte paints that are applied in high-traffic areas are even more susceptible to polishing. For example, areas that contain surfaces or walls subject to bumping into objects such as bags, shoes, furniture against the wall can result in scrapes and stains. Furthermore, in domestic residences, walls are susceptible to dirt from handprints, sauce spills or pen marks, which require cleaning the wall. Matte paints that are not washable, when applied to these surfaces, have low resistance to dirt, friction and polishing when subjected to cleaning, and when cleaning occurs in specific regions (notuniformly), it may cause friction marks that are irreversible.

[0005] Mineral fillers, such as calcium carbonate and kaolin, are commonly used in matte paints, but they compromise polishing resistance.

[0006] Furthermore, in paints and coatings, precipitated silica has been widely used as a matting agent with good characteristics. Modifications to particle size, size distribution and morphology have been developed to provide improvements in paint durability and polishing resistance, however, rubbing marks may still be seen after washing.

[0007] In an attempt to obtain a paint with greater resistance to polishing, satin, semi-satin and semi-gloss finishes were also tested in the matte paint formulation, however these finishes alter the shine and the perception of defects on the surface, in addition to being susceptible to more intense friction stains.

[0008] Therefore, resistance to polishing, as well as resistance to wet abrasion, continue to be one of the main challenges of a matte acrylic paint formulation, in which the need to further improve existing technology has been observed in order to obtain matte paint coating compositions that are washable, allowing effective cleaning of walls without leaving imperfections due to cleaning friction.

[0009] Patent BR 11 2021 006682-9 describes a process for forming an aqueous matte coating composition comprising acrylic polymer microspheres with an average particle diameter of 0.1 to 2 pm and 0.5 to 30 pm, crosslinking agent and other ingredients such as acrylic polymer binder, slip additive, foaming agent, rheology modifier and humectant, which provide the matte finish. The 85° gloss tests provided results in the order of 5.5 to 7.1 after 430 hours of exposure to QUVA, without rubbing.

[0010] In this sense, there was a need to develop new coating compositions for matte paint with high film resistance to polishing, friction and scratches and are washable, allowing little change in the 85° GU glosstests after washing, friction or rubbing.

[0011] The inventors of the present invention have discovered that the combination of certain mineral fillers with a matting agent and anti -scrape and polishing agents provides an unexpected effect in terms of polishing resistance and wet abrasion resistance of a matte paint composition after washing the surface, providing a product with superior scrape and bump resistance to the matte paint technologies available on the market.

[0012] Therefore, it is an objective of the present invention to provide a coating composition for matte and washable paint finishing that has high film resistance to polishing, friction and scratches, in addition to allowing the cleaning of difficult-to-remove dirt without leaving an odor.

[0013] In particular, the coating composition of the present invention exhibited an improved effect on polishing resistance according to the test described in the standard ASTM D6736-08 for evaluating initial and final 85° (GU) gloss and presented satisfactory performance for all requirements according to the standard ABNT NBR 11702 category 4.5.12 Washable latex.

[0014] A second objective of the invention is to provide the use of a coating composition containing mineral fillers, matting agent and non-ionic aqueous emulsion for application in matte acrylic paints that can be applied to surfaces in general in the construction industry.

[0015] The present invention also describes a matte acrylic paint product containing the composition of the present invention.SUMMARY OF THE INVENTION

[0016] The present invention relates to a coating composition comprising the following components:(a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof;(b) at least one silica-based matting agent;(c) at least one non-ionic aqueous emulsion selected fromparaffin wax and high-density polyethylene wax or a mixture thereof; and(d) at least one additional component selected from the group consisting of solvent, dispersing agent and binding polymer.

[0017] The combination of inorganic materials comprising high hardness mineral filler (a), excluding the use of silicates and carbonates in the formulation, along with the use of silica-based agents (b), which orient themselves on the surface of the film with spherical morphology to reduce exposure to polishing, and waxes (c), which provide a true shield for the fillers and pigments, provide the superior result in the product developed in the present invention.

[0018] The use of the coating composition for application in matte acrylic paints that can be applied to surfaces in general is also described, as well as a matte acrylic paint product containing the composition of the present invention.BRIEF DESCRIPTION OF FIGURES

[0019] Figure 1 refers to a graph containing the results of the polishing resistance test of latex paints according to ASTM D6736-08 to evaluate the initial and final 85° gloss (GU) of the composition of the present invention for light, medium and intense colors.DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention relates to a coating composition for a matte and washable paint finish that has high film resistance to polishing, friction and scratches, in addition to allowing the cleaning of difficult-to- remove dirt without leaving odor.

[0021] The high resistance to friction, scrapes, dirt, stains and scratches of the coating composition of the present invention was achieved due to the combination of its components, which comprises:(a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof;(b) at least one silica-based matting agent;(c) at least one non-ionic aqueous emulsion selected from paraffin wax and high-density polyethylene wax or a mixture thereof and;(d) at least one additional component selected from the group consisting of solvent, dispersing agent, binding polymer and mixtures thereof.

[0022] The hardness, morphology and sphericity of the mineral filler and the matting agent provide greater resistance to polishing of the coating composition.

[0023] The use of at least one non-ionic aqueous emulsion (c) in the composition of the present invention, selected from waxes, reduces the surface energy compared to a usual matte paint. Therefore, dirt will be less attracted to the wall containing low surface energy. These ingredients are also responsible for reducing the coefficient of friction, promoting greater resistance to polishing and surface scrapes.

[0024] Furthermore, the composition developed in the present invention has PVC (Pigment Volume concentration) below CP VC (Critical Pigment Volume Concentration), consequently, it has low porosity and greater ease of dirt removal.

[0025] In a preferred embodiment, the at least one mineral filler (a) of the present invention is present in the composition in a range from about 5.0% to about 25.0% by weight, based on the total weight of the composition.

[0026] Particularly, the mineral filler (a) of the present invention comprises about 5.0% to about 25.0% by weight of nepheline syenite, preferably from about 5.0% to 20.0% by weight, more preferably from about 6.0% to 14.0% by weight, even more preferably from about 6.0% to 10.0% by weight.

[0027] In an embodiment, the nepheline syenite has an average particle size of about 12 pm to about 15 pm.

[0028] In another embodiment, the mineral filler (a) of the presentinvention comprises about 5.0% to about 25.0% by weight of natural diatomite, preferably from about 5.0% to 20.0%, more preferably from about 6.0% to 14.0% by weight, even more preferably from about 6.0% to 10.0% by weight.

[0029] In an even more preferred embodiment, the composition of the present invention comprises two mineral fillers (a), that is, it comprises a mixture of nepheline syenite and natural diatomite, wherein said mixture contains a range of about 6.0% to 14.0% by weight of nepheline syenite and a range of about 6.0% to 10.0% by weight of natural diatomite, based on the total weight of the composition.

[0030] According to the present invention, the at least one silica- based matting agent (b) is preferably a silicon dioxide, such as synthetic silicon dioxide or precipitated amorphous silica and mixtures thereof.

[0031] The silica-based matting agent (b) is present in the composition in a range that may vary from about 5.0% to 15.0% by weight, preferably about 6.0% to 10% by weight, based on the total weight of the composition.

[0032] In a preferred embodiment, the silica-based matting agent (b) is a synthetic silicon dioxide.

[0033] In another preferred embodiment, the silica-based matting agent (b) is a precipitated amorphous silica, preferably having an average particle size of about 8 pm to about 12 pm.

[0034] In one embodiment of the invention, precipitated amorphous silica can be commercially obtained, usually known by the name Spherilex® DP0112, which has in its composition 100% precipitated amorphous silica with spherical morphology.

[0035] The non-ionic emulsifiers (c) used in the present invention have no specific charge (ionizable charge), providing balance between the hydrophobic and hydrophilic portions of the composition and acting in thecomposition as anti-scrape and anti-polishing agents.

[0036] The non-ionic aqueous emulsion (c) is present in the composition in a range that may vary from about 0.1% to about 5.0% by weight, based on the total weight of the composition.

[0037] Preferably, the at least one non-ionic aqueous emulsion (c) comprises about 0.5% to about 3.0% by weight of paraffin wax -based non- ionic aqueous emulsion. More preferably, about 0.5% to 1.5% by weight, even more preferably about 0.5% to about 1.0% by weight of paraffin wax, based on the total weight of the composition.

[0038] In particular, paraffin wax has CAS number 8002-74-2 and is known to be a complex combination of hydrocarbons that can be obtained from petroleum fractions, being composed of straight-chain hydrocarbons, with carbon numbers generally greater than 20.

[0039] In another embodiment, the non-ionic aqueous emulsion (c) comprises about 0.5% to about 3.0% by weight of high density polyethylene wax-based non-ionic aqueous emulsion, more preferably from about 0.5% to 1.5% by weight, even more preferably from about 0.5% to about 1.0% by weight of high density polyethylene wax, based on the total weight of the composition.

[0040] In a preferred embodiment, the non-ionic aqueous emulsion (c) comprises two components, that is, a mixture of paraffin wax -based emulsion and high-density polyethylene wax, comprising about 0.5% to about 1.5% by weight of non-ionic aqueous emulsion based on paraffin wax and about 0.5% to about 1.5% by weight of non-ionic aqueous emulsion based on high- density polyethylene wax, based on the total weight of the composition.

[0041] The composition of the present invention has an additional component (d) selected from a group consisting of solvents, dispersing agents, and binding polymers.

[0042] More specifically, the additional component (d) includes, forexample, the following components:(i) Solvent(s): selected from water, di ethylene glycol phenyl ether, monoethylene glycol phenyl ether, propylene glycol or a mixture thereof;(ii) Dispersing agent(s): selected from poly acrylates, preferably sodium polyacrylate; and(iii) Binder polymer(s): selected from acrylic binders, preferably styrene acrylic copolymer.

[0043] The additional component (d) is present in the composition in a content ranging from about 0.1% to about 80% by weight, relative to the total weight of the composition.

[0044] In one embodiment, the additional component (d) comprises:- about 20.0% to about 50.0% by weight of at least one solvent, preferably from about 30.0% to about 50.0% by weight;- about 0.1% to 1.0% by weight of at least one dispersing agent, preferably about 0.5% to 0.8% by weight; and- about 5.0% to 30.0% by weight of at least one binding polymer, preferably about 10.0% to about 20.0% by weight, in relation to the total weight of the composition.

[0045] The composition of the present invention additionally comprises one or more ingredients commonly used for paints, specifically for matte acrylic paints, such as, but not limited to: solvent(s), alkalizer(s), anticorrosive^), anti-settling agent(s), defoamer(s), biocide(s), coalescent(s), ion stabilizer(s), pigment(s), humectant(s), rheological modifier(s) and pigment(s) and mixtures thereof. These additional ingredients may be present in the paint in amounts ranging from about 0.01% to about 50% by weight, in relation to the total weight of the composition.

[0046] The ingredients that can be additionally inserted into the composition of the present invention are preferably selected from:- Alkalizers: 2-amino-2 -m ethyl- 1 -propane, monoethanolamine or diethanolamine;- Ion stabilizer: tetrasodium pyrophosphate or sodium hexametaphosphate;- Defoamer: mineral oils or organomodified polysiloxane emulsion;- Anti-corrosive: sodium nitrite;- Coalescent: phenyl glycol ether;- Anti-settling agent: hydroxyethyl cellulose;- Biocides: Diuron, Carbendazim, 5-chloro-2-methyl-2H- isothiazol-3-one or 2-n-Octyl-4-isothiazolin-3-one or combinations thereof;- Humectant: sulfoccinate diester sodium salt;- Rheological modifier: acrylic polymer; and- Pigment: titanium dioxide.

[0047] The inclusion of biocidal agents in the composition of the invention provides a paint product with additional resistance to mold and fungi, ensuring the health and well-being of the end consumer.

[0048] The present invention also relates to the use of the coating composition containing:(a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof;(b) at least one silica-based matting agent;(c) at least one non-ionic aqueous emulsion selected from paraffin wax and high-density polyethylene wax or a mixture thereof; and(d) at least one additional component selected from the group consisting of solvent, dispersing agent, binding polymer and mixtures thereof, for the preparation of washable matte acrylic paints, in which the composition provides a resistant paint finish facilitating the cleaning process without causing stains on the surface due to friction.

[0049] Finally, the present invention relates to a matte acrylic paint product comprising the coating composition of the present invention and one or more acceptable excipients.

[0050] Acceptable excipients that can be used in a matte acrylic paint product are selected from solvent, alkalizer, ion stabilizers, dispersing agents, defoamers, mineral fillers, pigments, binding polymers, polymers, anti- corrosives, coalescents, anti-settling agents, defoamers, solvents, biocides, humectants and rheological modifiers.

[0051] The coating compositions of the present invention may be used in the construction industry by applying the coating composition or a matte acrylic paint product containing the coating composition to a substrate such as wood, drywall, metal, or plastic. The coating composition may be applied directly to the substrate or indirectly such that one or more intermediate layers such as a primer is present as an intermediate layer between the coating composition and the substrate. The coating composition may be applied by any usual methods, including brushing, rolling, spraying, or drawing down the coating composition.TERMS

[0052] As mentioned in this application, the use of the term “a” or “an” in this specification does not indicate a limited quantity, but the existence of at least (minimum) one of the listed elements / components / items.

[0053] The use of the term “or” indicates any or all of the listed elements / components / items .

[0054] The expression “at least one” means “one or more” and therefore includes individual components as well as mixtures of 1, 2, 3 or more components and / or combinations.

[0055] The use of the term “comprise”, “endowed”, “provided” or a similar term indicates that the element / component / item listed in front of said term is part of the invention, but does not exclude otherelements / components / items not listed.

[0056] Except in operational examples, or where otherwise indicated, the term “about” means within + / - 10% of the stated value.

[0057] As used in this document, all given ranges must include all specified ranges within and combinations of subranges between the given ranges. Thus, a range from 1 to 5, for example, specifically includes 1, 2, 3, 4, and 5, as well as subranges, such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc. All ranges and values disclosed herein are inclusive and combinable. For example, any value or point described herein that is within a range described herein can serve as a minimum or maximum value for deriving a subrange, and so on.

[0058] Throughout this patent application, the term “mixtures thereof’ may be used following a list of elements as shown in the following example, where the letters A-F represent the elements: “one or more elements selected from the group consisting of A, B, C, D, E, F, and a combination of them.” The term “a combination thereof’ does not require that the combination include all of A, B, C, D, E, and F (although all of A, B, C, D, E, and F may be included). Instead, it indicates that a combination of any two or more of A, B, C, D, E, and F may be included. In other words, it is equivalent to the phrase “one or more elements selected from the group consisting of A, B, C, D, E, F and a combination of any two or more of A, B, C, D, E, and F.”

[0059] The cited chemical compounds contain synonyms, respective CAS number, IUPAC names and should be considered therein.

[0060] The compositions of the present invention may comprise, consist of, or consist essentially of, the essential elements and limitations of the invention described herein, as well as any additional or optional ingredients, components, or limitations described or useful herein.

[0061] The mineral filler (a) nepheline syenite consists of a plutonic rock composed mainly of alkali feldspar, nepheline, clinopyroxene,amphibole and biotite, being classified as an alkaline rock, in a mineral filler with high Mohs hardness (between 5.5 and 6). It is also known as anhydrous potassium and sodium aluminum silicate.

[0062] The mineral filler (a) natural diatomite, also known as diatomaceous earth or calcined diatomaceous earth, consists of a naturally occurring siliceous sedimentary rock that can be found in the form of a fine, white to off-white powder. Its composition basically consists of silica / silicon dioxide, and may also contain alumina and iron oxide.

[0063] Those skilled in the art will appreciate that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications, combinations and subcombinations and alterations can be made if necessary. All modifications, combinations, subcombinations, alterations and equivalents are included in the scope of the following claims.

[0064] By way of non-limiting illustration, the invention will now be described with reference to the following examples.Example 1: Coating composition of the present invention

[0065] In an embodiment, the coating composition for matte and washable paint of the present invention was prepared as per the following Table 1. able 1: Coating composition of the present invention

[0066] The composition of the present invention was obtained through the following steps:To prepare the composition of the present invention, mineral fillers (a) and titanium dioxide pigment were weighed according to the table above and then dispersed through a cowles type disc or propeller together with dispersant, defoamer and water additives.

[0067] After the dispersion stage, the polymeric dispersion, rheological modifiers, biocides and other additives were added in the completion stage at low shear.Example 2: Performance evaluation of the coating composition of thePRESENT INVENTION

[0068] The composition described in Table 1 above was evaluated for the physicochemical properties commonly used for the evaluation of performance of matte paints, as follows:• Gloss measurement to evaluate the matte finish, where the lower the value, the greater the matte finish. For this measurement, the procedure described in the standard ABNT NBR 15299 was considered, maximum of 8 GU at 85 °C;• Measurement of wet abrasion resistance with abrasive paste in accordance with the standard ABNT NBR 14940, with a minimum of 200 cycles;Measurement of finished yield, according to the standardABNT NBR 14942, with a minimum of 120 m2 / 18 L finished;• Measurement of the covering power of wet paint, according to the standard ABNT NBR 14943, with a minimum coverage of 90%; and• Measurement of volatile organic compound (VOC) content, in accordance with the standard ABNT NBR 16388 and maximum concentration of 100 g / L.

[0069] The tests carried out for the composition described in Table 1 provided the following results.Table 2: Performance result of coating composition for theMATTE PAINT OF THE PRESENT INVENTION

[0070] Table 2 demonstrates that the composition of the present invention provides surprising results in terms of matte finish, wet abrasion resistance and wet paint covering power, fully meeting the specifications for paints in the performance category 4.5.12 Washable latex.Example 3: Cleaning Test

[0071] The composition of the present invention as described in Table 1 was subjected to practical cleaning tests, such as the evaluation of the initial brightness at 85° (GU) and the final brightness after rubbing at 85° (GU).

[0072] The smaller the difference in gloss after rubbing compared to the initial gloss, the greater the matte finish. This result indicates that the composition of the present invention presented an increase in gloss of only 1.0 GU, which is an indication that the matte finish is maintained without much difference in gloss even after rubbing.

[0073] As described in Table 2, it is possible to note that the composition of the present invention, for matte and washable paint finishing, has high film resistance to polishing, friction and scratches, and it allows thecleaning of difficult-to-remove dirt and does not leave an odor.

[0074] The composition of the present invention was also subjected to practical cleaning tests, such as the evaluation of the initial gloss at 85° (GU) and the final gloss after rubbing at 85° (GU) taking into account different shades of paint colors. The results of this evaluation are shown in Table 3 below and the data are represented in Figure 1. This test was performed in accordance with the standard ASTM D6736-08.Table 3: Paint polishing resistance assessment test:

[0075] The results described in Table 3 provided a brightness difference of less than 1 GU for both light and medium to intense colors. Therefore, the composition of the present invention provides a surprising result in the matte and washable paint finish, with high film resistance to polishing, friction and scratches, even after rubbing.

Claims

CLAIMS1. A coating composition, characterized in that it comprises:(a) at least one mineral filler selected from nepheline syenite, natural diatomite or a mixture thereof;(b) at least one silica-based matting agent;(c) at least one non-ionic aqueous emulsion selected from paraffin wax and high-density polyethylene wax or a mixture thereof; and(d) at least one additional component selected from the group consisting of solvent, dispersing agent, binding polymer and mixtures thereof.

2. A coating composition, according to claim 1, characterized in that the mineral filler (a) is present in a range from 5.0% to 25.0% by weight, preferably from 5.0% to 20.0% by weight, based on the total weight of the composition.

3. A coating composition, according to any one of claims 1 to2, characterized in that the mineral filler (a) comprises from 6.0% to 14.0%, by weight, of nepheline syenite and from 6.0% to 10.0%, by weight, of natural diatomite, based on the total weight of the composition.

4. A coating composition, according to any one of claims 1 to3, characterized in that the mineral filler (a) is nepheline syenite with an average particle size of 12 pm to 15 pm.

5. A coating composition, according to any one of claims 1 to4, characterized in that the silica-based matting agent (b) is selected from synthetic silicon dioxide and precipitated amorphous silica, and mixtures thereof.

6. A coating composition, according to any one of claims 1 to5, characterized in that the matting agent (b) is present in a range from 5.0% to 15.0% by weight, preferably 6.0% to 10% by weight, based on the total weight of the composition.

7. A coating composition, according to any one of claims 1 to6, characterized in that the matting agent (b) is precipitated amorphous silica with an average particle size of 8 pm to 12 pm.

8. A coating composition, according to any one of claims 1 to7, characterized in that the non-ionic aqueous emulsion (c) is present in a range from 0.1% to 5.0% by weight, preferably 0.5% to 3.0% by weight, based on the total weight of the composition.

9. A coating composition, according to any one of claims 1 to8, characterized in that the non-ionic aqueous emulsion (c) comprises:- from 0.5% to 1.5% by weight of non-ionic aqueous emulsion based on paraffin wax; and- from 0.5% to 1.5% by weight of non-ionic aqueous emulsion based on high-density polyethylene wax, based on the total weight of the composition.

10. A coating composition, according to any one of claims 1 to9, characterized in that at least one additional component (d) is selected from the group consisting of:(i) Solvent(s): selected from water, di ethylene glycol phenyl ether, monoethylene glycol phenyl ether, propylene glycol or mixture thereof;(ii) Dispersing agent(s): selected from poly acrylates, preferably sodium polyacrylate; and(iii) Binder polymer(s): selected from acrylic binders, preferably styrene acrylic copolymer.

11. A coating composition, according to any one of claims 1 to10, characterized in that the additional component (d) is present in the composition in a content ranging from about 0.1% to about 80%, by weight, in relation to the total weight of the composition.

12. A coating composition, according to any one of claims 1 to11, characterized in that the additional component (d) comprises:- from 20.0% to 50.0% by weight of at least one solvent,preferably from about 30.0% to about 50.0% by weight;- from 0.1% to 1.0% by weight of at least one dispersing agent, preferably about 0.5% to 0.8% by weight;- from 5.0% to 30.0% by weight of at least one binding polymer, preferably about 10.0% to about 20.0% by weight, in relation to the total weight of the composition.

13. A coating composition, according to any one of claims 1 to 12, characterized in that said composition additionally comprises one or more ingredients for paints, selected from the group consisting of solvent(s), alkalizing agent(s), anti-corrosive agent(s), anti-settling agent(s), defoamer(s), biocide(s), coalescent agent(s), ion stabilizer(s), pigment(s), humectant(s), rheological modifier(s), pigment(s) and mixtures thereof.

14. A use of the coating composition defined in any one of claims 1 to 13, comprising applying the coating composition to an architectural substrate, preferably drywall, wood, metal, or plastic.

15. A matte acrylic paint, characterized in that it comprises the coating composition, as defined in any one of claims 1 to 13, and one or more acceptable excipients.

Images