KR102273973B1 - Easily-peelability coating composition - Google Patents

Abstract

The present invention relates to an easy-to-peel coating composition that can be easily peeled off and restored to its original state. The easy-to-peel paint composition of the present invention can be easily peeled off from the material to which the paint is applied, thereby maximizing the original restoration effect, protecting the material, and having excellent durability.

Description

Easy-peelability coating composition

The present invention relates to an easy-to-peel coating composition, and more particularly, to an easy-to-peel coating composition that can be restored to its original state by easily peeling the coating layer when changing color and design preferences or wanting to use it again as an original product.

In general, paint is a fluid material that is widely applied to the surface of an object to form a thin film layer and dries and hardens over time to protect the surface of the object as well as increase the aesthetics. In particular, such paint is applied to various structures such as buildings to make the appearance of the structure beautiful, and is often used to improve durability by preventing damage such as corrosion.

As paints mainly used for the protection of structures such as buildings, there are oil-based paints, enamel paints, and water-based paints. These paints have the effect of not only protecting buildings and materials (materials), but also increasing aesthetics and improving insulation and heat resistance.

Paints such as general paints are being developed for the main purpose of improving adhesion to materials to improve durability, and have a characteristic that it is not easy to peel off after drying/curing after application to a work piece. In particular, when applied to a paper material such as wallpaper, there is a problem that the peeling cannot be done at all or the paper is torn when peeled forcibly. As described above, it is impossible to restore the original state of paints such as general paints.

On the other hand, a peelable type of paint is partially used for vehicle application. In the case of vehicle use, since it is an oil-based type and contains an organic solvent, it has a strong odor and is harmful to the human body, so it is difficult to use it for indoor use. In addition, although it is used for protection of wooden furniture other than for vehicle use, it is not applied as a painting concept. When the above paint is coated (applied) on a paper material such as wallpaper, it is not easy to peel off later, causing a problem of tearing the paper during peeling, so it is not completely peeled off and it is not easy to restore the material to its original state. can't give

In particular, in the case of a material that can cause separation between layers due to the weak internal cohesion between the many pores (porous) and the material, such as laminated wallpaper (paper), the paint has high adhesion due to the above factors, so that the coating layer may not be peeled from the material. Peelable paint has not yet been applied for interior use because it is difficult and even the wallpaper (paper) may tear during peeling.

Therefore, it is possible to peel off the applied material regardless of place and time for quick change of preference, request for one's own item/space, easy DIY access, etc., and a paint or paint that can be restored to its original state when peeled off is needed.

Korean Patent Publication No. 10-2006-0084341 (July 24, 2006)

The object of the present invention is to maximize the effect of restoring the original state by easy peeling from the material to which the paint is applied, and at the same time to design the water-based type and develop it for use in indoor interiors and in contact with the human body, regardless of the location and use of the material. An object of the present invention is to provide an easy-to-peel coating composition having excellent protection and durability.

Other objects and technical features of the present invention are presented in more detail by the following description of the invention, claims and drawings.

In order to solve the above problems, the present invention

30 to 80 parts by weight of a polyvinyl-based resin; 0.2 to 2 parts by weight of a thickener; 5 to 30 parts by weight of a pigment; 1 to 5 parts by weight of an additive containing an antifoaming agent; and 5 to 30 parts by weight of a solvent, wherein the composition is easily peelable from an object, wherein the composition includes at least one of a release agent and an inorganic material.

The polyvinyl-based resin may include a vinyl chloride resin, a vinyl chloride resin modified with a vinyl-based monomer, polyvinyl butyral, or a mixture thereof, and preferably, the polyvinyl-based resin may be polybutyral.

The release additive includes at least one 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, oil, and silane it could be

The inorganic material may include any one or more selected from the group consisting _{of SiO 2} , CaCO ₃ , BaSO _{4 ,} Talc, Al(OH) _{3 ,} Al ₂ O ₃ and TiO _{2 .}

The releasability additive may be 1 to 20 parts by weight.

The inorganic material may be 5 to 40 parts by weight.

The solvent may be any one or more of water, alcohols, cellosols, and carbitols. Specifically, the solvent contains 90% or more of water based on the total solvent, and any one or more of alcohols, cellosols, and carbitols may be added for the purpose of improving functionality.

The object can be applied to any material that can be peeled off after the composition is applied. Specifically, the object may be a paper material.

The present invention relates to an easy-to-peel paint composition, which can be easily peeled off from a material to which the paint is applied, thereby maximizing an original restoration effect, protecting the material, and being used as a functional paint with excellent durability.

The easy-to-peel paint composition of the present invention is designed to be water-based and eco-friendly, so it can be safely used even when in contact with the human body, so it can be applied to indoor interiors, and in this case, there is an advantage regardless of location and use.

The easily peelable paint of the present invention is applied and the dried/cured coating film can be peeled off, and the peeled coating film is dissolved in alcohol and can be recycled, so it is a non-toxic material and has the advantage of having eco-friendly properties.

In addition, when the heat insulating material is mixed or dispersed in the easy-to-peel paint of the present invention and applied to an external window, cold protection and thermal insulation effects can be obtained.

1 is a photograph showing a comparison before peeling after applying a paint (A) to which a resin is added alone and a paint (B and C) according to the present invention.
2 is a photograph showing a comparison after peeling after applying the paint (A') and the paints (B' and C') according to the present invention to which the resin is added alone.

Hereinafter, preferred embodiments of the present invention will be described. However, the embodiment of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art.

The present invention provides an easy-to-peel coating composition further comprising a release agent or an inorganic material to a composition including an additive including a polyvinyl-based resin, a thickener, a pigment, and an antifoaming agent, and water. The easy-to-peel paint composition protects the applied material and has excellent durability compared to general paints that can be peeled off, and it is easy to peel even from wallpaper, which is a paper material, so it maximizes the restoration effect of the material, and as a water-based type, contact with the human body There is an advantage that it can be safely used regardless of place and purpose as it is used in the existing indoor interior.

The polyvinyl-based resin is dissolved in the water and painted on the surface of the material, and serves to protect the surface after the solvent is dried. desirable. Examples of the polyvinyl-based resin applicable to the easily peelable coating composition of the present invention include a polyvinyl resin, a polyvinyl resin modified with a vinyl-based monomer, and the like. These may be used alone or in combination of two or more. The polyvinyl resin is a resin having excellent flexibility, tensile strength and toughness in the form of water dispersion, and has the advantage of enabling easy peeling of the easily peelable paint composition from the material. Preferably, the polyvinyl-based resin may be polyvinyl butyral, polyvinyl acetate (PVaC), polyvinyl alcohol (PVA), or the like.

If the content of the polyvinyl-based resin contained in the easy-to-peel coating composition is less than 30 parts by weight based on the total weight, the coating solution stability is poor and there is a difficulty in forming a coating film due to poor applicability, and when it exceeds 80 parts by weight A difficulty arises in that paints containing pigments cannot be produced. Accordingly, the easily peelable paint composition contains 20 to 80 parts by weight of the polyvinyl-based resin, preferably 35 to 65 parts by weight.

The thickener serves to improve the coating properties by improving the storage stability and viscosity of the composition. Examples of the thickener include cellulose, acrylic thickener, urethane thickener, wax, and clay. These may be used alone or in combination of two or more.

If the content of the thickener is 2 parts by weight or more, the viscosity and thixotropic properties are too high, and thus a coating film cannot be formed. On the other hand, when the amount is less than 0.2 parts by weight, the viscosity is too low and it flows down like water, which causes a problem in that it is not applied. Therefore, the easy-to-peel paint composition contains 0.2 to 2 parts by weight of the thickener, preferably 0.3 to 1.5 parts by weight.

The additive may include a leveling agent, a wetting and dispersing agent, a preservative, an anti-freezing agent, an antifoaming agent, and an additive having functionality. These may be used alone or in combination of two or more. The additive is generally used to uniformly maintain workability and physical properties of the easily peelable coating composition.

In addition, the easily peelable paint composition of the present invention may further include a releasability additive. The releasability additive may be included in the easily peelable coating composition of the present invention to enable easy peeling of the easily peelable coating composition from the applied material, thereby improving peelability.

The releasability additive is for securing the improvement of peelability of the coating film, and may increase the peeling effect by increasing the releasability or improving the cohesive force of the resin to lower the adhesion between the paint and the material surface. Preferably, the release agent additive may be silicone oil, silicone polymer, silicone emulsion, modified silicone oil or polymer, siloxane and modified siloxane, silicone rubber, wax-type additive, surfactant, oil, silane, or the like. However, in order to improve releasability, an excessive amount of releasable additives other than silicone oil and polymer must be used as releasable additives, and peelable paints have problems such as durability, film thickness, and film strength, so they are included in the easy-to-peel paint composition of the present invention Suitable mold release additives are silicone polymers or oils (modified silicone oils and polymers). The easy-to-peel paint composition contains 1 to 20 parts by weight of the releasability additive, preferably 3 to 15 parts by weight.

In addition, the easily peelable paint composition of the present invention may further include an inorganic material. The inorganic material is included in the easily peelable coating composition of the present invention to enable easy peeling of the easily peelable coating composition from the applied material, thereby improving peelability.

The inorganic material is for securing the releasability of the coating film, and by increasing the releasability of the easily peelable coating composition, the adhesion between the paint and the surface of the material is lowered, thereby enhancing the peeling effect. In addition, the inorganic material may serve to improve the paint increase effect and applicability in addition to the peeling effect, and to improve the strength of the coating film. Preferably, the inorganic material may include or mix any one or more selected from the group consisting _{of SiO 2} , CaCO ₃ , BaSO ₄ and Talc, Al(OH) _{3 and} TiO _{2 .}

By controlling the size (㎛) of the inorganic material particles, the support effect can be increased and permeability can be suppressed, and the exfoliation property can be improved while maintaining the existing physical properties such as durability, coating film strength, and coating film thickness by adjusting the resin/inorganic material ratio. have. The easily peelable paint composition contains 5 to 40 parts by weight of the inorganic material, preferably 10 to 30 parts by weight.

In addition, the easy-to-peel paint composition may further include a pigment to identify the painted portion. Examples of the pigment include extender pigments, colored pigments, and mixed pigments thereof. When the pigment is included in the easy-to-peel paint composition, when the content of the pigment exceeds 30 parts by weight, the stability of the paint is lowered and the paint film does not play a role, thereby causing a problem in that the peeling of the coating film is poor. Accordingly, the easily peelable paint composition may contain 5 to 30 parts by weight of the pigment, preferably 5 to 20 parts by weight.

The solvent contained in the easily peelable coating composition is used to secure workability of the coating of the easily peelable coating composition. Preferably, the solvent may be any one or more of water, cellosol, and carbitol. These may be used alone or in combination of two or more. More preferably, it may be a mixture of any one of water and cellosols and carbitols. When the amount of the solvent applied to the paint is small, the drying time may be fast, and when the amount of the solvent applied to the paint is large, the drying time may be delayed.

[Example]

1. Preparation of easy-to-peel paint composition containing releasable additives

Example 1

60 g of PVB water-dispersed resin PC-2 (Shark-Solutions), which can be peeled off and surface protected from the material, was added while stirring, and 15 g of water-dispersed white pigment (Wooshin Pigment) capable of exhibiting the properties of color and inorganic materials was added. . After this, 11 g of water was added and mixed well for 10 minutes. When the viscosity of the paint increased while adding 5.5 g of TT-935D (Dow chemical) as a thickener while stirring continuously, the rpm of the stirrer was increased to facilitate mixing. After mixing 7.5 g of PMX200F (Saehan Silicone Chem), a silicone releasable additive that can improve peelability after stirring at high speed for 30 to 60 minutes or more, and 1 g of F-810 (Tego), an antifoaming agent that suppresses bubbles and breaks the generated bubbles, , an easy-to-peel coating composition according to the present invention was prepared by high-speed stirring for at least 30 minutes.

Example 2

An easy-to-peel coating composition was prepared in the same manner as in Example 1, except that 7.5 g of MEM3345 (Saehan Silicam) was used instead of 7.5 g of PMX200F, which is the release agent, to prepare an easy-to-peel coating composition.

Example 3

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 20 g of MEM3345 (Saehan Silichem) was used instead of 7.5 g of PMX200F, which is the release agent, to prepare an easy-to-peel paint composition.

Example 4

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 25 g of MEM3345 (Saehan Silicam) was used instead of 7.5 g of PMX200F, which is the release additive, to prepare an easy-to-peel paint composition.

Example 5

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 10 g of PMX50 (Saehan Silicam) was used instead of 7.5 g of PMX200F, which is the releasability additive, to prepare an easy-to-peel paint composition.

Example 6

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 10 g of HV495 (Saehan Silicam) was used instead of 7.5 g of PMX200F, which is the releasability additive, to prepare an easy-to-peel paint composition.

Example 7

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 10 g of PMX 0345 (Saehan Silichem) was used instead of 7.5 g of PMX200F, which is the release additive, to prepare an easy-to-peel paint composition.

Example 8

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that 10 g of PMX0245 (Saehan Silicam) was used instead of 7.5 g of PMX200F, which is the release additive, to prepare an easy-to-peel paint composition.

2. Manufacture of easy-to-peel paint composition containing inorganic materials

Example 9

While stirring 60 g of PVB water-dispersed resin PC-2 (Shark-Solutions), which can be peeled off and surface protected from the material, 20 g of water-dispersed white pigment (Wooshin Pigment) that can exhibit color and inorganic material properties was added. After this, 14 g of water was added and mixed well for 10 minutes. While stirring, 3 g of TT-935D (Dow chemical), a thickener, was added, and when the viscosity of the paint increased, the rpm of the stirrer was increased to facilitate mixing. After stirring at high speed for 30 to 60 minutes or more _{, 2 g of inorganic material SiO 2} (5 μm) (SOLVAY), which can improve peelability and improve paint applicability, is added and stirred at high speed for more than 60 minutes, and bubbles are suppressed and generated After mixing 1 g of an antifoaming agent (Tego) F-810 for breaking the old air bubbles, the easy-to-peel paint composition according to the present invention was prepared by high-speed stirring for at least 30 minutes.

Example 10

An easy-to-peel coating composition was prepared in the same manner as in Example 1, but an easy-to-peel coating composition was prepared using 2 g of TT-935D instead of 3 g of TT-935D as the thickener.

Example 11

An easy-to-peel coating composition was prepared in the same manner as in Example 1, except that _{7.5 g of CaCO 3} (5 μm) (Omiya Korea) was used instead of 3 g _{of the inorganic material SiO 2} (5 μm) to prepare an easy-to-peel coating composition.

Example 12

An easy-to-peel coating composition was prepared in the same manner as in Example 1, except that _{7.5 g of CaCO 3} (20 μm) (Omiya Korea) was used instead of 3 g _{of the inorganic material SiO 2} (5 μm) to prepare an easy-to-peel coating composition.

Example 13

An easy-to-peel coating composition was prepared in the same manner as in Example 1, but instead of 3 g _{of the inorganic material SiO 2 (5 μm), 10 g of CaCO 3} (5 μm) (Omiya Korea) was used to prepare an easy-to-peel coating composition.

Example 14

An easy-to-peel paint composition was prepared in the same manner as in Example 1, but instead of 3 g _{of SiO 2 (5 μm), which is the inorganic material, 10 g of BaSO 4} (2 μm) (Daejeong Hwaeum (reagent), coat) was used to facilitate peeling A paint composition was prepared.

Example 15

An easy-to-peel coating composition was prepared in the same manner as in Example 1, except that _{10 g of CaCO 3} (10 μm) was used instead of 3 g _{of the inorganic material SiO 2} (5 μm) to prepare an easy-to-peel coating composition.

Example 16

An easy-to-peel paint composition was prepared in the same manner as in Example 1, except that _{10 g of Talc was used instead of 3 g of the inorganic material SiO 2} (5 μm) to prepare an easy-to-peel paint composition.

Each of the components and contents according to the easily peelable paint compositions of Examples 1 to 16 according to the present invention are summarized in Tables 1 and 2 below.

Easy-to-peel paint composition (additive for releasability) division Suzy H ₂ O thickener pigment antifoam releasable additive material name PC-2 - TT-935D white pigment F-810 PMX200F MEM3345 PMX 50 HV495 PMX 0345 PMX 0245 Example 1 60 11 5.5 15 1.0 7.5 Example 2 60 11 5.5 15 1.0 7.5 Example 3 60 11 5.5 15 1.0 20 Example 4 60 11 5.5 15 1.0 25 Example 5 60 9 5 15 1.0 10 Example 6 60 9 5 15 1.0 10 Example 7 60 9 5 15 1.0 10 Example 8 60 9 5 15 1.0 10

Easy peeling paint composition (inorganic material added) division Suzy H ₂ O thickener pigment antifoam inorganic material material name PC-2 - TT-935D white pigment F-810 SiO ₂
(5μm) CaCO ₃
(5μm) CaCO ₃
(20μm) BaSO ₄
(2μm) BaSO ₄
(10μm) Talc Example 9 60 14 3 20 1.0 2 Example 10 60 15 2 20 1.0 2 Example 11 60 9.5 5 18 1.0 7.5 Example 12 60 9.5 5 17 1.0 7.5 Example 13 60 7 5 17 1.0 10 Example 14 60 7 5 17 1.0 10 Example 15 60 7 5 17 1.0 10 Example 16 60 7 5 17 1.0 10

comparative example

70 g of PVB water-dispersed resin PC-2, which can be peeled off and surface protected from the material, was stirred while 10 g of water-dispersed white pigment was added. After this, 15 g of water was added and mixed well for 10 minutes. When the viscosity of the paint increased while adding 4 g of TT-935D as a thickener while stirring continuously, the rpm of the stirrer was increased to facilitate mixing. After stirring at high speed for 30-60 minutes or more, 1 g of an antifoaming agent F-810 for suppressing bubbles and breaking generated bubbles was mixed, followed by high-speed stirring for 30 minutes or more to prepare the paint of Comparative Example 1.

[Experiment result]

On a paper specimen, the paints of Examples 1 to 8, Examples 9 to 16, and Comparative Examples are coated with an airless spray or roller (brush) to a thickness of 50 to 100 μm, and then dried. After that, it was allowed to stand for 1 month to confirm the peelability and physical properties of the formed coating film. The evaluation of the physical properties was evaluated by the following evaluation method, and the evaluation results are disclosed in Tables 3 and 4.

1. Evaluation of easy-to-peel paint composition containing releasable additives

peelability film strength surface condition compatibility Polish Example 1 3 2 buried △ X Example 2 One 4 Good ○ ○ Example 3 3 One Good △ △ Example 4 3 One Good △ △ Example 5 3 2 slightly smeared ○ ◎ Example 6 One 4 slightly smeared X ◎ Example 7 4 One slightly smeared ○ ◎ Example 8 4 One slightly smeared ○ ◎

(The higher the number, the better the peelability and film strength: 1 to 5 points)

2. Evaluation of Easy Peelable Paint Compositions Containing Inorganic Materials

peelability film strength film smoothness compatibility Polish liquid state Example 9 2 2 One ○ X creamy Example 10 3 2 3 X X liquid Example 11 3 4 2 ◎ ◎ creamy Example 12 3 4 3 ◎ ◎ liquid Example 13 4 3 2 ◎ △ creamy Example 14 4 3 2 ◎ △ creamy Example 15 4 3 2 ◎ △ creamy Example 16 3 3 3 ◎ ○ liquid

(The higher the number, the better the peelability and film strength: 1 to 5 points)

3. Evaluation of paint composition that does not contain mold release additives or inorganic materials

peelability film strength film smoothness compatibility Polish surface condition comparative example 2 5 3 ◎ ◎ Good

Referring to Tables 3 to 5, it can be seen that the easily peelable paint compositions of Examples 1 to 16 according to the present invention have superior peelability compared to the paints of Comparative Examples that do not include a release additive or an inorganic material.

On the other hand, FIGS. 1 and 2 are tests for peelability by applying the paints of the comparative example and the present invention to the object, and include a paint including a release agent (B and 2B in FIGS. 1B and 2B ') and an inorganic material. It was confirmed that the paint (C' in FIG. 1 and C' in FIG. 2) had excellent peelability compared to the comparative examples (A in FIG. 1 and A' in FIG. 2) that did not include a release additive and an inorganic material.

Claims (8)

30 to 80 parts by weight of a polyvinyl-based resin;
0.2 to 2 parts by weight of a thickener;
5 to 30 parts by weight of a pigment;
1 to 5 parts by weight of an additive containing an antifoaming agent; and
A paint composition comprising 5 to 30 parts by weight of a solvent, which is easily peeled off from an object,
The composition includes any one or more of a mold release additive and an inorganic material,
The solvent includes water,
The releasability additive is 1 to 20 parts by weight,
The easily peelable paint composition, characterized in that the inorganic material is 5 to 40 parts by weight. The composition according to claim 1, wherein the polyvinyl-based resin comprises a vinyl chloride resin, a vinyl chloride resin modified with a vinyl-based monomer, polyvinyl butyral, or a mixture thereof. According to claim 1, wherein the release additive is any one 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, oil and silane A composition comprising one or more. The composition of claim 1, wherein the inorganic material comprises at least one selected from the group consisting _{of SiO 2} , CaCO ₃ , BaSO _4, Talc, Al(OH) _3, Al ₂ O ₃ and TiO _{2 .} . delete delete The composition of claim 1, wherein the solvent further comprises any one or more of alcohols, cellosols, and carbitols. The composition of claim 1, wherein the object is a paper material.

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