KR102410048B1 - Manufacturing method for multi-color aqueous coating composition and multi-color aqueous coating composition thereby the same that - Google Patents

Abstract

The present invention relates to a thermal insulation coating composition of a new composition that is not only non-flammable, but also has excellent adhesion and thermal insulation properties, and is environmentally friendly because it does not use an organic solvent.
According to the present invention, 100 parts by weight of a resin emulsion consisting of a urethane acrylate resin emulsion and a fluorine-based acrylate resin emulsion (based on solid content), 1 to 8 parts by weight of a hydrophilic colloid-forming material, and 5 to 30 parts by weight of a coloring pigment are mixed and stirred in water. the process of making a coloring paint; The process of dispersing 0.5 to 5 parts by weight of the hydrophilic colloid-forming material and the gelling agent forming a three-dimensional network structure in 100 parts by weight of water to make a dispersion medium; The process of mixing 30 to 150 parts by weight of the colored paint with respect to 100 parts by weight of the dispersion medium and stirring to make a colored gel; The process of making gelled colored particles by pulverizing the colored gelled product; 20-40 parts by weight of urethane acrylate resin emulsion (based on solid content), 10-20 parts by weight of fluorine-based acrylate resin emulsion (based on solid content), 0.5-3 parts by weight of a silane compound and stirring in water to make an external material; and a process of blending the external material and the gelled colored particles;

Description

A method for manufacturing an aqueous patterned coating composition and an aqueous patterned coating composition prepared thereby { Manufacturing method for multi-color aqueous coating composition and multi-color aqueous coating composition thereby the same that}

The present invention relates to a method for manufacturing an aqueous patterned paint composition and a patterned paint composition prepared thereby, a method for preparing a new aqueous patterned paint composition with improved adhesion, hardness, and stain resistance, and a method for manufacturing an aqueous patterned paint composition prepared thereby, adhesiveness, hardness It relates to a water-based pattern coating composition of a new composition capable of forming a high-quality coating film with improved physical properties such as , stain resistance, and the like.

In general, stone is used as an interior and exterior material for construction, such as concrete or steel structure, because it has the advantage of having a dignified exterior and a beautiful luster. In particular, natural stone has excellent aesthetic effects and is widely used for decoration of buildings.

However, natural stone is not only difficult to supply and demand, but also has disadvantages such as high weight, high cost for transportation and construction, and difficult maintenance.

Therefore, as one of the economical ways to replace natural stone, patterned paint has been proposed and used. As is well known, these patterned paints contain two or more color particles, and have a similar appearance to natural stone materials due to the color particles.

On the other hand, the conventional patterned paint has a disadvantage in that the scratch resistance and stain resistance are somewhat weak, so that the coating film is easily damaged and contaminated. Therefore, in the prior art, the undercoat was applied to the surface to be coated, then a middle coat was applied with a pattern paint on it, and a top coat was separately applied over the intermediate coat to protect the intermediate coat. Therefore, when constructing a conventional patterned paint, it is cumbersome and time-consuming because it is necessary to apply three coats of the undercoat, the middle coat, and the top coat. It has many disadvantages.

Republic of Korea Patent Registration No. 10-2061446 (2019. 12. 24.)

The present invention has been proposed in view of the above problems, and is a method for easily manufacturing a water-based patterned paint composition of a new composition with improved physical properties such as adhesion, hardness, stain resistance, and adhesion, hardness, and resistance An object of the present invention is to provide a water-based patterned paint composition of a new composition that does not require a separate topcoating because it forms a high-quality coating film with improved physical properties such as staining properties.

According to the characteristics of the present invention, 100 parts by weight of a resin emulsion consisting of a urethane acrylate resin emulsion and a fluorine-based acrylate resin emulsion (based on solid content), 1 to 8 parts by weight of a hydrophilic colloid forming material, 5 to 30 parts by weight of a coloring pigment, and water The process of making a colored paint by stirring it; The process of dispersing 0.5 to 5 parts by weight of the hydrophilic colloid-forming material and the gelling agent forming a three-dimensional network structure in 100 parts by weight of water to make a dispersion medium; The process of mixing 30 to 150 parts by weight of the colored paint with respect to 100 parts by weight of the dispersion medium and stirring to make a colored gel; The process of making gelled colored particles by pulverizing the colored gelled product; 20-40 parts by weight of urethane acrylate resin emulsion (based on solids), 10-20 parts by weight of fluorine-based acrylate resin emulsion (based on solids), 0.5-3 parts by weight of a silane compound and stirring in water to make an external material; and a process of blending the external material and the gelled colored particles; and a method for preparing an aqueous patterned paint composition comprising the steps of, and an aqueous patterned paint composition prepared by the method are provided.

According to another feature of the present invention, the hydrophilic colloid-forming material is a cellulose derivative, polyethylene oxide, polyvinyl alcohol, casein, starch, galactomannan, guar gum (guar gum), locust bean gum (locust bean) gum), and the gelling agent is at least one selected from clay minerals such as montmorillonite and hectorite, sodium pentachlorophenol, borate, tannic acid, calcium chloride, and sodium hydroxide.

According to the present invention having the above configuration, there is provided a patterned paint composition having physical properties such as hardness and stain resistance as well as adhesion compared to conventional patterned paints.

The pattern paint composition according to the present invention is water-based, so it is eco-friendly, and it has the advantage of excellent interior effect because it can produce natural stone patterns of various colors. It has improved scratch resistance and improved stain resistance to form a high-quality coating film that is not easily contaminated. Therefore, there is no need for additional topcoating to protect the painted surface as in the prior art. Compared to the case of using the conventional patterned paint, the painting process is simplified, the period is shortened, and labor is reduced, which has economic advantages. .

Hereinafter, the present invention will be described in more detail.

The present invention is made in the following way.

1) The process of making colored paint

A resin emulsion, a hydrophilic colloid-forming material, a coloring pigment, water, and other additives are mixed to make a colored paint.

As the resin emulsion, a urethane acrylate resin emulsion and a fluorine-based acrylate resin emulsion are used. As a resin emulsion, a urethane acrylate resin emulsion and a fluorine-based acrylate resin emulsion are used together, so the adhesion and hardness of the paint composition. Physical properties such as scratch resistance, stain resistance, and gloss are improved.

Considering the physical properties of such a paint composition, it is used in a weight ratio of 3: 2 to 3 based on the solid content of the urethane acrylate resin emulsion and the fluorine-based acrylate resin emulsion.

The hydrophilic colloid-forming material is one or two or more of cellulose derivatives, polyethylene oxide, polyvinyl alcohol, casein, starch, galactomannan, guar gum, and locust bean gum. used The colored paint is gelled by the hydrophilic colloid-forming material and the gelling agent of the dispersion medium to be described later. The hydrophilic colloid-forming material is used in an amount of 1 to 8 parts by weight based on 100 parts by weight of the resin emulsion (based on solid content). When the content of the hydrophilic colloid-forming material is within the above range, the colored paint is stably gelled.

As the color pigment, any of known pigments can be used. For example, metal oxides such as titanium dioxide, chromium oxide, and cobalt blue, metal hydroxides such as alumina white and yellow iron oxide, ferrocyanide compounds such as blue blue, lead chromate such as sulfur lead, zinc chromate, and molybdenum red, sulfide Sulfide systems such as zinc, lead, cadmium yellow, and cadmium red; sulfate systems such as serene compounds, barite, and precipitated barium sulfate; carbonate systems such as heavy calcium carbonate and precipitated calcium carbonate; water-containing silicates, clay, ultramarine Silicate-type, such as carbon-type, carbon-type, such as carbon black, etc. are mentioned. As organic pigments, nitroso pigments such as naphthol green B, nitro pigments such as naphthol S, azo pigments such as ritol red, lake red C, first yellow, and naphthol red, alkali blue red, rhodamine chelate, quinacridone Condensed polycyclic pigment systems, such as red, a dioxazine bio-red, and isoindolinone yellow, etc. are mentioned. The coloring pigment is used in an amount of 5 to 30 parts by weight based on 100 parts by weight of the resin emulsion (based on solid content).

Other additives are known additives commonly used in the manufacture of paints, such as extenders, thickeners, dispersants, defoamers, leveling agents, sunscreens, wetting agents, coating film forming aids, and the like.

These components are stirred with water to make a colored paint. After adding water and a hydrophilic colloid-forming material to a stirrer, a resin emulsion, a colored pigment and other additives are added and further stirred to make a colored paint. Although the amount of water used is not limited, about 50 to 80 parts by weight is used based on 100 parts by weight of the resin emulsion (based on solid content).

2) The process of making a dispersion medium

A dispersion medium is prepared by dispersing the gelling agent in water. As the gelling agent, clay minerals such as montmorillonite and hectorite, sodium pentachlorophenol, borate, tannic acid, calcium chloride, sodium hydroxide, and the like are used. The gelling agent is dispersed in 0.5 to 5 parts by weight based on 100 parts by weight of water.

The gelling agent interacts with the hydrophilic colloid-forming material of the colored paint to form a three-dimensional network, and thus the colored paint is gelled.

3) The process of making colored gels

The highly colored paint and dispersion medium made in the above process are put into a stirrer and thoroughly stirred. In this way, as described above, the gelling agent in the dispersion medium and the hydrophilic colloid-forming material of the colored paint interact to form the colored gel, which is then gelled.

Preferably, 30 to 150 parts by weight of a coloring material are mixed with 100 parts by weight of the dispersion medium and stirred. If more than 150 parts by weight of the colored paint is used with respect to 100 parts by weight of the dispersion medium, the colored paint does not gel properly, and if it is used in less than 30 parts by weight, the amount of the colored paint is excessively small compared to the dispersion medium, which is uneconomical.

4) The process of making gelled colored particles

The colored gelled product formed in the above process is separated by filtration in the dispersion medium, and then dispersed and crushed with a high-speed disperser or crushed by a known method such as internal immersion ((micronized) to make gelled colored particles.

The size of the gelled colored particles is appropriately adjusted by controlling the amount of the hydrophilic colloid-forming material and the gelling agent, and the stirring time of the colored paint and the dispersion medium.

In the present invention, a colored gel is made by gelling the colored paint. Since the colored particles are pulverized to form gelled colored particles, the size of the gelled colored particles can be more easily controlled.

5) External phase material manufacturing process

20-40 parts by weight of urethane acrylate resin emulsion (based on solid content), 10-20 parts by weight of fluorine-based acrylate resin emulsion (based on solid content), 0.5-3 parts by weight of silane compound, and 100-150 parts by weight of water to remove external substances makes

As the urethane acrylate resin emulsion and the fluorine-based acrylate resin emulsion are used for these external substances, as described above, the adhesion and hardness of the paint composition. Physical properties such as scratch resistance, stain resistance, and gloss are improved.

The silane compound further improves adhesion, stain resistance and gloss of the paint composition. Examples of silane compounds include methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, butyltrimethoxysilane, and butyltriethoxysilane. Silane, pentyl trimethoxysilane, pentyl triethoxysilane, hexyltrimethoxysilane hexyl triethoxysilane, heptyl trimethoxysilane, heptyl triethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, octa At least one of decyltriethoxysilane, 3-glycidoxy propyltrimethoxysilane, and the like is used. When the silane compound is used in an amount of less than 0.5 parts by weight, it is difficult to expect the effect of the silane compound, and when it exceeds 3 parts by weight, the storage stability of the coating composition is deteriorated, so it is not preferable.

The external substance selectively contains a colored pigment. If the external substance does not contain a colored pigment, the external substance forms a transparent coating film, and as will be described later, the undercoat is exposed. In addition, as described above, a thickener, a dispersing agent, an antifoaming agent, a leveling agent, a sunscreen agent, a wetting agent, a coating film forming aid, etc. may be added to the external material in the range that does not impair the effects of the present invention.

6) Process of mixing external substances and gelled colored particles

The pattern paint composition is completed by combining the external material and the gelled colored particles.

Preferably, the external material and the gelled colored particles are blended so that about 100 to 150 parts by weight of the gelled colored particles are contained with respect to 100 parts by weight of the external material.

The water-based patterned paint composition prepared by the present invention prepared in this way can be applied to various objects such as mortar, concrete, ceramic, plastic, metal, wood, paper, and the like, and is preferably used as a finishing material on the concrete wall of a building.

When using the water-based pattern paint composition according to the present invention, the viscosity is adjusted by mixing water and then sprayed on the surface to be applied. Because the property is good and the stain resistance is good, there is no need to apply a separate topcoat as in the prior art. That is, since the construction is completed by applying the undercoating surface to the surface to be applied and constructing the patterned paint composition according to the present invention, the construction is simple compared to the conventional patterned paint composition, the labor is reduced, and the construction cost is reduced. have

In the above, it is exemplified that one type of gelled colored particles is mixed with the external material, but it is also possible to mix a plurality of types of gelled colored particles having different colors with the external material so that the patterned paint composition has various colors. have.

Example

55 parts by weight of urethane acrylate resin emulsion (based on solid content), 45 parts by weight of fluorine-based acrylate resin emulsion (based on solid content), 3 parts by weight of cellulose derivative, 3 parts by weight of titanium white, 10 parts by weight of cobalt blue, 3 parts by weight of calcium carbonate, 0.2 parts by weight of a film forming aid, 0.5 parts by weight of a dispersant, 0.2 parts by weight of an antifoaming agent, 0.3 parts by weight of a leveling agent, and 0.5 parts by weight of a sunscreen agent were stirred in 60 parts by weight of water to prepare a colored paint.

Then, 5 parts by weight of hydrous magnesium silicate was dispersed in 100 parts by weight of water to make a dispersion medium, and 100 parts by weight of the dispersion medium and 100 parts by weight of the coloring material were mixed in a stirrer and stirred at 300 rpm for 30 seconds to make a colored gelled product in which the coloring material was gelled.

The stirred material was filtered to obtain only the colored gelled product, and the colored gelled product was placed in a disperser and treated at 1000 rpm for 3 minutes to prepare gelled colored particles having a particle size of about 1 to 5 mm.

Separately, 20 parts by weight of a urethane acrylate resin emulsion (solid content), 10 parts by weight (solid content) of a fluorine-based acrylate resin emulsion, 2 parts by weight of a silane compound (methyltrimethoxysilane), 5 parts by weight of calcium carbonate, 0. 5 parts by weight, 0.5 parts by weight of a dispersant, 0.2 parts by weight of an antifoaming agent, 0.3 parts by weight of a leveling agent, and 0.5 parts by weight of a sunscreen agent were stirred in 100 parts by weight of water to prepare an external phase material.

A pattern coating composition was prepared by mixing 100 parts by weight of the prepared external material and 100 parts by weight of the gelled colored particles.

After pouring water into the pattern paint composition to adjust the viscosity so that it is suitable for spraying, and then using a spray to paint a concrete plate with a size of 100cm×100cm×10cm to a thickness of about 50㎛, dry it at room temperature for 24 hours to make a specimen , the physical properties of the coating film were tested as follows.

comparative example

A commercially available patterned paint from Company S was purchased and coated under the same conditions as in Examples to make specimens, and physical properties were tested in the same manner as in Examples.

<Adhesiveness test>

After making 100 crosscuts at intervals of 1 mm on the specimen coating film using an adhesion tester (Cross Cutter, ASTM), attach 3M's scotch tape on it, press it by reciprocating it twice with a rubber roller, and peel it off the tape. Adhesion was tested by the number of pieces remaining on the specimen. The experiment was repeated 3 times, and the average value is shown in Table 1.

Item Example comparative example adherence 100 95

As can be seen from Table 1, in the Example, there were no pieces that came off, and all 100 pieces remained, and in the Comparative Example, 5 pieces came off, leaving 95 pieces. Through this, it can be seen that the adhesiveness of the embodiment is superior to that of the conventional paint.

<Hardness test>

For the hardness of the coating film, the pencil hardness method of JIS K-5400 was used. Specifically, the degree of scratching when drawn at an angle of 45° for each type of pencil on the specimen coating film using a pencil hardness tester was visually determined.

Item Example comparative example Hardness 3H H

As shown in Table 2, it was confirmed that the Example had significantly higher hardness than the Comparative Example.

<Pollution resistance test>

After marking the specimen in a W shape using oil-based magic, water-based pen, and crayons, respectively, the degree of magic removal using a wiper was evaluated by dividing it into four stages. The case where it was most easily erased without residual ink at one time was denoted by ◎, when it was erased several times without residual ink, and when it was erased, it was denoted by ○, when it was erased and a residual feeling remained, and when it was not erased, it was denoted by X.

Item Example comparative example
stain resistance meteor magic ◎ △ water-based pen ◎ △ crayon ◎ X

As can be seen from Table 3, the Example obtained significantly better stain resistance of the coating film than the Comparative Example.

<Weather resistance test>

Weather resistance was tested for gloss retention of the coating film after 600 hours of QUV-B according to ASTM G53.

Item Example comparative example Weather resistance (gloss retention) 95% 85%

As can be seen from Table 4, the Example obtained a result superior in the weather resistance of the coating film compared to the Comparative Example.

<Glossiness Test>

According to KSM ISO 2813, the gloss level of the coating film was checked using a gloss meter.

Item Example comparative example glossiness 98% 90%

As can be seen from Table 5, the Example had better gloss than the Comparative Example.

Claims (3)

A urethane acrylate resin emulsion, 100 parts by weight of a resin emulsion consisting of a fluorine-based acrylate resin emulsion (based on solid content), 1 to 8 parts by weight of a hydrophilic colloid-forming material, and 5 to 30 parts by weight of a coloring pigment are mixed and stirred in water to make a colored paint. process;
The process of dispersing 0.5 to 5 parts by weight of the hydrophilic colloid-forming material and the gelling agent forming a three-dimensional network structure in 100 parts by weight of water to make a dispersion medium;
The process of mixing 30 to 150 parts by weight of the colored paint with respect to 100 parts by weight of the dispersion medium and stirring to make a colored gel;
The process of making gelled colored particles by pulverizing the colored gelled product;
20-40 parts by weight of urethane acrylate resin emulsion (based on solid content), 10-20 parts by weight of fluorine-based acrylate resin emulsion (based on solid content), 0.5-3 parts by weight of a silane compound and stirring in water to make an external material; and
The process of blending the external material and the gelled colored particles so that 100 to 150 parts by weight of the gelled colored particles are contained with respect to 100 parts by weight of the external material;
The hydrophilic colloid-forming material is at least one selected from cellulose derivatives, polyethylene oxide, casein, starch, guar gum, and locust bean gum,
The gelling agent is selected from at least one selected from clay minerals such as montmorillonite and hectorite, sodium pentachlorophenol, tannic acid, calcium chloride, and sodium hydroxide,
The resin emulsion is a method for producing a water-based patterned paint composition, characterized in that the urethane acrylate resin emulsion and the fluorine-based acrylate resin emulsion are used in a weight ratio of 3: 2 to 3 based on the solid content.
delete It is prepared by the method of claim 1,
Urethane acrylate resin emulsion, fluorine-based acrylate resin emulsion, hydrophilic colloid-forming material, and gelled colored particles containing color pigment are urethane acrylate resin emulsion, fluorine-based acrylate resin emulsion, silane compound, and external substances containing water A water-based patterned paint composition, characterized in that it is dispersed in the