Easy-peel coating composition

Abstract

To provide an easily peelable coating composition capable of restoring the original state by easily peeling off a coating film.SOLUTION: There is provided an easily peelable coating composition which is easy to peel off from an object and comprises 30 to 80 pts.wt. of a PVB (polyvinyl butyral) resin, 0.2 to 2 pts.wt. of a thickener, 5 to 30 pts.wt. of a pigment, 1 to 5 pts.wt of an additive including an antifoaming agent and a remainder of a solvent, wherein the easily peelable coating composition further comprises one or more of 1 to 20 pts.wt. of a releasable additive and 5 to 40 pts.wt. of an inorganic material and the solvent includes water.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an easily peelable paint composition, and more specifically, when it is desired to change the preference for color and design or reuse it as the original product, it can easily peel the coating film layer and restore it to its original state. It relates to an easily peelable paint composition. It can be peeled off and restored to its original state. It relates to an easily peelable paint composition.

Background Art

[0002] Generally, paint is a fluid substance that is widely applied to the surface of an object to form a thin film layer, and not only protects the surface of the object by drying and curing over time, but also has the function of increasing aesthetic feeling. Such paint is particularly applied to various structures such as buildings, not only to beautify the appearance of the structure, but also to prevent damage such as corrosion and is often used to improve durability. and is often used to improve durability. and is often used to improve durability.

[0003] Paints mainly used for protecting structures such as buildings include oil paints, enamel paints, and water-based paints. Such paints not only protect the building and [[ID=2�]] materials, but also increase aesthetic feeling and have effects such as improving heat insulation and flame retardancy. materials, but also increase aesthetic feeling and have effects such as improving heat insulation and flame retardancy. have the effect of improving heat insulation and flame retardancy.

[0004] Generally, paints such as ordinary paints are developed mainly for the purpose of improving the adhesion to materials for improving durability, and after being applied to the workpiece and dried / cured, they have the characteristic that they are not easily peeled off. In particular, when applied to materials such as paper wallpaper, there are problems that it cannot be peeled off at all or the paper is torn when peeled off forcibly. As described above, the actual situation of ordinary paints such as paints is that they cannot be restored to their original state at all. such as paints is that they cannot be restored to their original state at all. such as paints is that they cannot be restored to their original state at all.

[0005] Furthermore, paint is often used on wood and glass, but the coating can be applied as needed. When it needs to be removed, it is not only difficult to peel it off, but foreign matter etc The limitations of leaving things as they were meant to be made made it difficult to restore them to their original state.

[0006] This allows for rapid changes in preferences, demands for personal items / spaces, and easy access. To get closer to DIY, regardless of location or time, the coated material (paper, wood, A paint or coating that can be peeled off (from glass, etc.) and that can restore the raw material to its original state after peeling is required. This is the actual situation. [Overview of the project] [Problems that the invention aims to solve]

[0007] The objective of the present invention is to make it easy to peel off the paint from the material to which it is applied and to maximize the effect of restoring the original condition. Both are designed as water-based types and developed for use in interiors and for applications where they may come into contact with the human body. To provide an easily peelable coating composition that protects materials and offers excellent durability, regardless of location or application. And so it is.

[0008] Other objects and technical features of the present invention are described below in the description of the invention, claims and drawings. It will be presented in more detail. [Means for solving the problem]

[0009] To solve the above problems, the paint composition according to the present invention, which is easily peeled off from the target object, is P 30 to 80 parts by weight of polyvinyl resin containing VB (polyvinyl butyral); containing an antifoaming agent. The present invention is characterized by containing 1 to 5 parts by weight of an additive and an aqueous solvent containing water as the remainder.

[0010] The molecular weight of the PVB resin may be 100,000 to 210,000 g / mol. Preferably, the PVB resin may have a particle size of 170 to 240 μm.

[0011] The paint composition may further contain additional components including latex, acrylic copolymer, polyvinyl acetate, urethane or polyvinyl alcohol. At this time, the weight ratio of the PVB resin to the additional components in the paint composition may be 9 to 12:1.

[0012] The paint composition may contain one or more of a mold release additive and an inorganic material. .

[0013] The mold release additive may contain 1 to 20 parts by weight of any one or more selected from the group consisting of silicone oil, silicone polymer, silicone emulsion, modified silicone oil or polymer, siloxane and modified siloxane, silicone gum, wax type additive, surfactant, oil and silane.

[0014] The inorganic material may contain 5 to 40 parts by weight of any one or more selected from the group consisting of SiO2, CaCO3, BaSO4, Talc, Al(OH)3, Al2O3 and TiO2.

[0015] The aqueous solvent may further contain one or more of alcohols, cellosolves and carbitols.

[0016] The object may be paper, wood or a glass material.

Advantages of the Invention

[0017] ​​​​The present invention relates to an easily peelable paint composition, which can be easily peeled from a material coated with the paint and restored to its original state, while maximizing the effect and being used as a functional paint with excellent durability by protecting the material. It can be achieved.

[0018] The easily peelable paint composition of the present invention is designed to be environmentally friendly in an aqueous type and can be safely used even when in contact with the human body, so it is applicable to indoor interiors. In this case, there is an advantage that it does not matter about the place and use. There is an advantage that it does not matter about the place and use. There is an advantage that it does not matter about the place and use.

[0019] The paint film coated with the easily peelable paint of the present invention and dried / cured can be peeled off, and the peeled paint film can be dissolved in alcohols and recycled, so there is also an advantage of being non-toxic and environmentally friendly. The paint film coated with the easily peelable paint of the present invention and dried / cured can be peeled off, and the peeled paint film can be dissolved in alcohols and recycled, so there is also an advantage of being non-toxic and environmentally friendly. There is also an advantage of being non-toxic and environmentally friendly.

[0020] In addition, by mixing or dispersing a heat insulating material in the easily peelable paint of the present invention and applying it to an external window, heat insulation and heat preservation effects can be obtained.

Brief Description of the Drawings

[0021] [Figure 1] It is a photograph comparing the states of papers coated with a paint (A') with only PVB resin added, a paint (B') containing a release additive, and a paint (C') containing an inorganic material. [Figure 2] It is a photograph comparing the peeled states of papers coated with a paint (A') with only PVB resin added, a paint (B') containing a release additive, and a paint (C') containing an inorganic material according to the present invention. [Figure 3] It shows photographs indicating before and after peeling on glass according to the content ratio of PVB and latex. [Figure 4] It shows photographs indicating before and after peeling on silk (PVC) wallpaper according to the content ratio of PVB and latex.

Modes for Carrying Out the Invention

[0022] The following describes preferred embodiments of the present invention. However, embodiments of the present invention may vary in many ways. It can be transformed into various forms, and the scope of the present invention is not limited to the embodiments described below. Furthermore, embodiments of the present invention can be further described to a person with average skill in the art. Provided for complete explanation.

[0023] This invention relates to a polyvinyl resin containing PVB (polyvinyl butyral), and an additive containing an antifoaming agent. A peelable paint composition containing an agent and water, further comprising a release agent or an inorganic material. It is also good. The easily peelable coating composition, compared to a general peelable coating, is applied It protects the material and offers excellent durability, and even paper wallpaper is easy to remove, thus restoring the material to its original condition. To maximize the effect, it is a water-based type and is used in interior decor where there is a possibility of contact with the human body, And it has the advantage of being safe to use regardless of its intended purpose.

[0024] The PVB (polyvinyl butyral) resin is dissolved in the water and coated onto the surface of the material. It serves to protect the surface after the solvent has dried, and when the material is completely dry and the coating needs to be removed... It is preferable that the PVB (polyvinyl butyral) has the property of being easily peelable. The resin is a water-dispersible resin with excellent flexibility, tensile strength, and toughness, and is suitable for easily peelable paint compositions. It has the advantage of making it easy to detach objects from their original materials.

[0025] The aforementioned PVB (PolyVinyl Butyral) resin is made of PVA and n-butylal It is produced by a condensation reaction with dehyde. The PVB resin may be water-based or emulsion-type, and the material After being painted on the surface, the solvent dries and then protects the surface of the material. (The PVB resin) It is a resin with excellent flexibility, tensile strength, and toughness, and easily peelable paint compositions can be easily made from the material. To make it removable.

[0026] The structure of the aforementioned PVB resin is a butyral group represented by the following chemical formula 1, The cetyl group and hydroxyl group may be included as repeating units.

[0027] [ka]

[0028] In particular, when the molecular weight of the PVB resin is 100,000 to 210,000 g / mol Furthermore, it has excellent release properties and storage stability, and the PVB resin has a particle size of 170 to 240 μm. Having this feature further improves peelability and storage stability.

[0029] The PVB (PolyVinyl Butyral) resin contained in the aforementioned easily peelable coating composition If the fat content is less than 30 parts by weight relative to the total weight, the stability of the coating solution decreases. Furthermore, it has poor applicability and makes it difficult to form a smooth coating film, and if it exceeds 80 parts by weight, the pigment is... The problem arises that the paint cannot be manufactured. Therefore, the easily peelable paint composition The PVB resin is contained in 20 to 80 parts by weight, preferably 35 to 65 parts by weight.

[0030] The easily peelable coating composition may further contain a thickener, and the thickener is used for storage of the composition. It plays a role in improving the stability and viscosity and thereby improving the applicability. An example of the thickening agent is, Examples include lurose, acrylic thickeners, urethane thickeners, waxes, and clay-based thickeners. These may be used individually or in combination of two or more.

[0031] If the content of the thickening agent is 2 parts by weight or more, the viscosity and thixotropy become too high, thus forming a coating film. There are some things that cannot be done. On the other hand, if it is less than 0.2 parts by weight, the viscosity is too low, like water. It may run down and become impossible to apply. Therefore, the aforementioned easily peelable paint composition contains 0. It is advantageous to include 2 to 2 parts by weight, preferably 0.3 to 1.5 parts by weight.

[0032] The aforementioned additives include, in addition to defoaming agents, leveling agents, wetting and dispersing agents, preservatives, antifreeze agents, and defoaming agents. It may also contain functional additives, etc. These may be used individually or in combination of two or more. It may be present. The additive is used to uniformly maintain the workability and physical properties of the easily peelable paint composition. It is commonly used for this purpose.

[0033] Furthermore, the easily peelable coating composition of the present invention may further contain a release agent. The additive is contained in the easily peelable coating composition of the present invention, and the easily peelable coating composition is applied to the substrate. The peelability can be improved by making it easy to peel off the material.

[0034] The aforementioned release additive is intended to ensure improved paint film peelability and enhance release properties. Alternatively, by improving the cohesive force of the resin, the adhesion between the paint and the material surface is reduced, and the peeling effect is reduced. This can be improved. Preferably, the release additive is silicone oil, silicone Polymers, silicone emulsions, modified silicone oils or polymers, siloxanes and Modified siloxanes, silicone rubber, wax-type additives, surfactants, oils and siloxanes Run or similar materials may also be used. However, in order to improve release properties, silica can be used as a release agent. Release additives other than corn oil and polymers must be used in excess, and the release agent must be removable. Since paints have problems such as durability, film thickness, and film strength, the present invention provides easy peeling Release additives included in the paint composition include silicone polymers or oils (modified silicones) Corn oil and polymers are preferred. The easily peelable coating composition contains a release agent. It is preferable to include 1 to 20 parts by weight, preferably 3 to 15 parts by weight.

[0035] Furthermore, the easily peelable coating composition of the present invention may further contain an inorganic material. The inorganic material is The present invention includes an easily peelable coating composition, which allows the easily peelable coating composition to be removed from the coated material. The peelability can be improved by making it easy to peel off.

[0036] The inorganic material is intended to ensure the peelability of the coating film, and the peelability of the easily peelable coating composition. By increasing the moldability and reducing the adhesion between the paint and the material surface, the peeling effect can be enhanced. Furthermore, the inorganic material improves not only the peeling effect but also the paint volume increase effect and the applicability. It can perform the role of improving the strength of the coating film. Preferably, the inorganic material is The group consists of SiO2, CaCO3, BaSO4, and Talc, Al(OH)3, and TiO2. It may include or be used in combination with one or more of the selected elements.

[0037] By adjusting the particle size (μm) of the inorganic material, the support effect can be enhanced and penetration can be suppressed. By adjusting the ratio of the material, conventional physical properties such as durability, coating strength, and coating thickness are maintained. It can maintain its properties while also improving its peelability. The easily peelable coating composition is the inorganic material It may contain 5 to 40 parts by weight, preferably 10 to 30 parts by weight.

[0038] The aforementioned easily peelable coating composition, by containing the composition described above, can be used for paper wallpaper and other materials. Because it can be easily peeled off and removed as needed after being applied to materials such as wood and glass, It has the advantage of being able to restore the material to its original state. For reference, paper has many pores. In the case of materials where the internal cohesive force between the porous material and the underlying material is weak and interlayer separation may occur, paint It has high adhesive strength, and the coating layer may be difficult to peel off from the paper.

[0039] Furthermore, the easily peelable coating composition may further contain a pigment for the purpose of identifying the painted area. Examples of the aforementioned pigments include extender pigments, colored pigments, and mixed pigments thereof. If the easily peelable paint composition contains a pigment, the amount of the pigment exceeds 30 parts by weight. This leads to a decrease in paint stability, rendering the paint ineffective and resulting in poor paint film removal. Problems may occur. Therefore, the easily peelable paint composition contains 5 to 3 of the pigment. It may contain 0 parts by weight, preferably 5 to 20 parts by weight.

[0040] The solvent contained in the easily peelable paint composition ensures the workability of the easily peelable paint composition during application. It is used for the purpose of. Preferably, the solvent is water, plus cellosolves and carbamides. It may further contain one or more of the Tall compounds. These may be used in combination of two or more. It may be. If the amount of solvent used in the paint is small, the drying time will be faster, and the paint Using a large amount of solvent in the material may slow down the drying time. [Examples]

[0041] [Experimental Example 1]: Production of an easily removable coating composition containing PVB resin Example 1 While stirring 70g of PVB water-dispersible resin PC-2, add a water-dispersible white pigment that can exhibit color. 10g was added. Then, 15g of water was added and mixed well for 10 minutes. While continuing to stir... Then, 4g of the thickening agent TT-935D is added, and as the viscosity of the paint increases, the rpm of the stirrer is increased. The mixture was raised to facilitate mixing. The mixture was stirred at high speed for 30-60 minutes or more to suppress and eliminate bubbles. After mixing in 1g of the antifoaming agent F-810 to break air bubbles, the mixture was stirred at high speed for 30 minutes or more to produce Example 1. They manufactured the paint.

[0042] [Experimental Results] Apply the paint from Example 1 above to a sample of paper wallpaper using an air sprayer or roller (brush), etc. It was then painted to a thickness of 50-100 μm and dried. After that, it was left to form for one month. The peelability and physical properties of the coating film were confirmed, and the results are shown in Table 1. For reference, see above. The quality of the material was evaluated using the following method. *Measurement of peelability: When the coating applied to paper wallpaper is peeled (removed) after one day, the condition is measured in 5 stages. Evaluated by dividing into stages (evaluated along with the condition of the material after peeling) - Excellent 5, Good 4, Average 3, Poor 2 good, 1 bad *Measurement of coating strength: The elasticity and tearing state of the dried coating when pulled are classified into 5 stages. Rating - Excellent 5, Good 4, Average 3, Insufficient 2, Poor 1 *Measurement of coating film smoothness: The smoothness of the surface and the condition of the applied coating are visually inspected on a 5-point scale. Evaluated by category: Excellent 5, Good 4, Average 3, Insufficient 2, Poor 1 *Compatibility measurement: The final paint is stored in a transparent sample container and allowed to settle and separate into layers, then the emulsion is... Evaluate the condition: Excellent ◎, Good ○, Average ◇, Insufficient △, Poor × *Gloss measurement: The degree of gloss of the dried film is evaluated on a 4-point scale - very high gloss (High) (high gloss) ◎, high (Egg shell gloss) ○, normal (Semi g loss)△, low (Matt)× *Surface condition measurement: The particle state of the dried film is evaluated visually and by touch - good, normal, poor. good

[0043] [Table 1]

[0044] As shown in Table 1 above, in the case of paints containing PVB resin, paper wallpaper exhibits a certain degree of partial peelability. In addition, the coating strength, compatibility, gloss, and surface condition were evaluated as excellent. For reference, paper has many pores, its internal cohesive force is weak, and interlayer separation occurs easily. Therefore, its peelability is relatively poor compared to glass and other materials.

[0045] [Experimental Example 2]: Comparison of the physical properties of paint compositions based on PVB molecular weight Examples 2 to 5 Stir 60g of PVB emulsion resin having molecular weights as shown in Table 2 below. Then, 11g of water was added and mixed for 10 minutes. After that, stirring was continued to suppress bubbles and develop Mix 1g of the defoaming agent F-810(Tego) to break the bubbles that have formed, and run at high speed for 30 minutes or more. By stirring, the paint compositions of Examples 2 to 5 according to the present invention were produced.

[0046] [Table 2]

[0047] The physical properties of easily peelable coating compositions were tested based on PVB molecular weight, and the results are shown in Table 3. This was derived. For reference, the physical properties of the paint composition were measured by the following method. did. *Transparency measurement: Transmittance is used to measure and determine the transparency of the coating by classifying it into five levels. (Relative evaluation) - Transmittance: Excellent ◎, Good ○, Average ◇, Insufficient △, Poor × *Measurement of storage stability: The final paint is stored in a transparent sample container and allowed to settle and separate into layers, and the emulsion is examined. Evaluate storage stability, etc.: Excellent (◎), Good (○), Average (◇), Insufficient (△), Poor (×) *Measurement of tensile strength: The length of elongation when a dry film (20*100mm) is pulled is expressed as a percentage. compare *Measurement of glass transition temperature: DSC (differential research ca Measured with a lorimetry device. *Measurement of peelability: When the coating applied to silk (PVC) wallpaper is peeled (removed) after 1 day... The condition is evaluated by classifying it into 5 stages (evaluated together with the condition of the material after peeling) - excellent peelability ◎, Good ○, Fair ◇, Unsatisfactory △, Bad ×

[0048] [Table 3]

[0049] Referring to the experimental results in Table 3 above, the molecular weight of the PVB resin is 100,000 to 210,0 Examples 2 and 3, which contain 00 g / mol, were confirmed to have excellent peeling effects and storage stability. It was also confirmed to have the best properties and tensile strength. On the other hand, the molecular weight of the PVB resin is 100,000. In Examples 4 and 5, where the value is less than or exceeds 210,000, peelability and storage stability are considered. It was confirmed that the effect of [the substance] was relatively reduced.

[0050] [Experimental Example 3]: Comparison of physical properties of paint compositions based on PVB particle size Examples 6 to 9 Paint composition based on particle size of PVB resin with molecular weight of 100,000 to 160,000 g / mol To analyze the physical properties of the material, a PVB emulsion resin having the particle size range shown in Table 4 below was used. For the purposes of this experiment, the paint compositions of Examples 6 to 9 were manufactured using the same method as in Experimental Example 2 described above. Afterward, the physical properties of each manufactured paint composition were measured.

[0051] [Table 4]

[0052] Referring to the experimental results in Table 4 above, the PVB resin particle size was 170-240 μm. Example 8 was confirmed to have the best peelability, tensile strength, and storage stability.

[0053] [Experimental Example 4] Confirmation of additional resin components that can be included. Examples 10 to 21 In addition to the PVB resin (Example 8), the easily removable coating composition according to the present invention may further contain To confirm the ingredients, vinyl copolymer (methacrylamide MMA: acrylic acid) AA: Itaconic acid, weight ratio = 7:2:1 (Krill emulsion) and polyacetate emulsion (PVAc, acetate content 7 lb) %, polyvinyl alcohol (PVOH), and SBR latex emulsion (KS After mixing L341) in the weight ratios shown in Tables 5 to 8 below, use the same method as in Experimental Example 3 above. The paint compositions of Examples 10 to 21 were prepared by this method. Subsequently, the paints produced were The physical properties of the composition were measured using the same method as described in Experimental Example 3 above, and the additional coating strength was measured. The following method was used for measurement. *Coating film strength: The elasticity and tearing ability of the dried coating are evaluated on a 5-point scale when pulled. - Coating strength: Excellent (◎), Good (○), Average (◇), Insufficient (△), Poor (×)

[0054] [Table 5]

[0055] [Table 6]

[0056] [Table 7]

[0057] [Table 8] Referring to Tables 5 through 8, the PVOH or latex component is in a certain weight ratio with the PVB resin. When mixing, one or more of the following must be considered: transparency, storage stability, coating strength, or storage stability. It was confirmed that it has an equivalent or better effect. In particular, PVB:PVOH or PV B: When the weight ratio of latex is 9:1, the best delamination among the mixtures used. It was found to be effective. However, when the content of the above additional components increased above a certain standard... As the PVB content falls below a certain level, transparency, storage stability, coating strength, or storage stability decrease. It was confirmed that one or more of the effects may be reduced. Figures 1 and 2 are shown in Table 9 below. As mentioned above, the glass and silk ( PVB (Example 8) and latex content ratios) The image shows photographs of experiments conducted on the peelability and transparency of PVC wallpaper.

[0058] [Table 9]

[0059] As shown in Figure 1, the order of transparency performance for glass is #1 > #11 > #12 > #13. Therefore, it was confirmed that the peeling performance was in the order of #1 > #11 > #12 >> #13. As shown in Figure 2, the transparency performance of silk (PVC) wallpaper is #1 > #11 > #1 The order is 2 > #13, and the peeling performance is in the order of #1 >> #11 >> #12 >>> #13. This was confirmed.

[0060] [Experimental Example 5]: Production of an easily removable paint composition containing a release agent Example 22 While stirring 60g of PVB water-dispersible resin PC-2 (Shark-Solutions) 15g of water-dispersible white pigment (Ushin pigment) that exhibits the properties of color and inorganic materials is added. Then, 11g of water was added and mixed well for 10 minutes. While continuing to stir, the thickener was added. Adding 5.5g of TT-935D (Dow Chemical) increased the viscosity of the paint. Then, the rpm of the stirrer was increased to facilitate mixing. The mixture was stirred at high speed for 30 to 60 minutes or more. PMX200F (a silicone release additive that can improve release properties) 7.5g of (Teg) and an antifoaming agent F-810 (Teg) for suppressing bubbles and breaking up existing bubbles. After mixing 1g of (o), stir at high speed for 30 minutes or more to obtain the easily peelable paint composition according to the present invention. They manufactured an item.

[0061] Examples 23 to 29 The easily peelable coating composition is manufactured by the same method as in Example 22 above, but Table 10 below shows Each of the easily peelable coating compositions according to Examples 23 to 29 was prepared with the content of the composition described. Ta.

[0062] [Table 10]

[0063] [Experimental Example 6] Production of easily peelable paint composition containing inorganic materials Example 30 While stirring 60g of PVB water-dispersible resin PC-2 (Shark-Solutions) 20g of water-dispersible white pigment (Ushin Picment) that exhibits the properties of color and inorganic materials is added. Then, 14g of water was added and mixed well for 10 minutes. While continuing to stir, the thickener was added. Adding 3g of TT-935D (Dow Chemical) increases the viscosity of the paint. Then, the rpm of the stirrer was increased to facilitate mixing. After stirring at high speed for 30-60 minutes or more Inorganic material SiO2 (5μm) (SOLVA) that improves peelability and paint application properties. Add 2g of Y) and stir at high speed for 60 minutes or more to suppress bubbles and break any bubbles that have formed. After mixing 1g of the defoaming agent (Tego) F-810, stir at high speed for 30 minutes or more to produce the desired result. A readily removable paint composition was manufactured by Akira.

[0064] Examples 31 to 37 The easily peelable coating composition is manufactured by the same method as in Example 30 above, but as shown in Table 11 below. Each of the easily peelable coating compositions according to Examples 31 to 37 was prepared with the content of the composition described. Ta.

[0065] [Table 11]

[0066] Examples 22 to 29 and 30 to 6 of Experimental Examples 5 and 6 were placed on paper wallpaper samples. Apply the 37 paints to a thickness of 50-100 μm using an air sprayer or roller (brush). After application, it was allowed to dry. Then, after being left for one month, the peelability and physical properties of the formed coating were checked. The above physical properties were evaluated using the same evaluation method as in Experimental Example 1, and the evaluation results are shown in Table 1. 2 [Easily peelable paints containing release additives] and Table 13 [Easily peelable paints containing inorganic materials] [Disclosed in the document]. (Higher numbers indicate better peelability and coating strength: 1 to 5 points)

[0067] [Table 12]

[0068] [Table 13]

[0069] Referring to Tables 12 to 13 above, it is more common when a release agent or inorganic material is included. Furthermore, it was confirmed to have excellent release properties (it does not contain release additives or inorganic materials). (Has a higher peeling effect compared to Example 1).

[0070] For reference, Figures 3 and 4 show the peelability obtained by applying the paint of the present invention to paper wallpaper. This is a modified version. Figures 3A and 4A' contain a release agent and an inorganic material. The images show the state with and without the paint (Example 1) applied, and the state after it has been removed.

[0071] Figures 3B and 4B' show the application state of the paint containing a release agent (Example 26), and This shows the state after peeling, and C in Figure 3 and C' in Figure 4 are paints containing inorganic material additives (actual The image shows the coated state of Example 33) and the state after it has been removed.

[0072] Therefore, paper wallpaper must contain at least a release additive or inorganic material to provide a release effect. It can be seen that it is even better in terms of results.

[0073] As described above, the easily peelable coating composition according to the present invention has been explained, but the present invention is not as described above. Rather than being limited to the embodiments described, the present invention can take various forms within the scope of the technical concept to which it belongs. It should be obvious that it can be transformed into a different form.

Claims

1. 30 to 80 parts by weight of PVB (polyvinyl butyral) water-dispersible resin; Thickening agent 0.2 to 2 parts by weight; One to five parts by weight of an antifoaming agent; and Including the remaining solvent, An easily peelable coating composition that can be easily removed from the target object, The molecular weight of the PVB aqueous dispersion resin is 100,000 to 210,000. The PVB aqueous dispersion resin has a particle size of 170 to 240 μm. The aforementioned easily peelable coating composition further comprises 1 to 20 parts by weight of a mold release additive. The aforementioned solvent contains water, The aforementioned release agent is one or more selected from the group consisting of silicone oil, silicone polymer, silicone emulsion, modified silicone oil or polymer, siloxane and modified siloxane, silicone rubber, wax-type additive, surfactant and silane. The aforementioned target material is paper, and is characterized by being an easily peelable coating composition.

2. The easily peelable coating composition according to claim 1, characterized in that the easily peelable coating composition further comprises latex, an acrylic copolymer, polyvinyl acetate, or polyvinyl alcohol.

Images