KR20190120519A - The paste composition and method of wallpaper using the same - Google Patents

Abstract

The present invention relates to a wallpaper composition, which comprises a hydrophilic resin obtained by polymerizing starch and one or more ethylenically unsaturated monomers, wherein the total water solubility of the ethylenically unsaturated monomer is at least 3.0 g monomer per 100 g water or more and to a construction method of a wallpaper using the same.

Description

DOUBLE POOL COMPOSITION AND WALLPAPER INSTALLATION METHOD {THE PASTE COMPOSITION AND METHOD OF WALLPAPER USING THE SAME}

The present invention relates to a method of construction of the wallpaper and the wallpaper using the same.

Gypsum board is a building material for building interiors where flue gas desulfurization gypsum is used as a main raw material, mixed with water and miscible materials, and the surface is coated or molded with raw paper.

In manufacturing the gypsum board, recycled paper is mainly used as a base paper, and the recycled paper is manufactured using recovered paper, that is, old paper as a raw material. The wasteland is a circulating resource that is recycled as a raw material for papermaking after being circulated in the process of production, distribution, consumption and recovery. As such, the use of highland paper as a raw material has advantages in reducing waste and efficiently using resources. In addition, recycling of highland is important in that it can also protect forest resources by inhibiting the use of new pulp to make paper.

By the way, in order to improve the utilization of highland, foreign matters that are unsuitable for reproduction into paper must be thoroughly removed in the process of sorting, but in reality, various sources (general homes, paper processing plants, printing and binding plants, publishing houses, newspaper companies, small and large shopping malls, etc.) It is very difficult to fully discern the large amount of waste from). Therefore, in the case of paper / cardboard products such as gypsum board manufactured using high paper, there is a problem in that physical properties and appearance quality are deteriorated by various foreign matters contained in the high paper as a raw material.

For example, the gypsum board using high paper contains a highly dye-inflammable dye component derived from high paper, the problem that colored spots caused by the dye component occurs on the surface of the silk wallpaper when the silk wallpaper is applied to the gypsum board have. In order to fundamentally solve this problem, it is necessary to use paper made of new pulp instead of paper when manufacturing gypsum board, but it is not preferable in terms of environmental protection or economics.

Therefore, even when the wallpaper is installed on the gypsum board made of high paper, there is a need for a method capable of preventing the dye transfer phenomenon due to the dye component.

KR 2010-0062898 A

An object of the present invention is to provide a dopantula composition having excellent anti-drinking effect.

The present invention is to provide a construction method of the wallpaper using the above-mentioned doubly paste composition.

The present invention relates to a doppler composition comprising a hydrophilic resin obtained by polymerizing starch and one or more ethylenically unsaturated monomers, wherein the total water solubility of the ethylenically unsaturated monomers is at least 3.0 g monomer / 100 g water or more. .

In addition, the present invention provides a wallpaper construction method comprising applying the dopantula composition to one surface of the wallpaper, and attaching the wallpaper to which the dopantula composition is applied to the wall surface.

Doubly paste composition of the present invention, as well as the effect of improving the adhesion, is also very excellent anti-degradation effect, when using this wallpaper wallpaper can significantly reduce the dye transfer phenomenon from the base of the gypsum board surface. Therefore, using the dopantul composition of the present invention has the effect of improving the appearance quality of the wallpaper constructed on the gypsum board.

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

The present invention provides a Daffodil composition.

The dopantula composition of the present invention comprises a starch and a hydrophilic resin.

The starch may be at least one selected from corn starch, waxy corn starch, amioka starch, tapioca starch, potato starch, sweet potato starch, sago starch, arrow root starch, wheat starch, rice starch and the like.

In addition, the starch may be used through a process of hydrolyzing through an acid catalyst or a decomposition enzyme to have a viscosity that is dissolved in an appropriate concentration in water. For example, wheat flour containing wheat starch hydrolyzes the wheat starch in hot water with a strong acid such as sulfuric acid. After that, preservatives were added to prevent contamination by microorganisms such as bacteria and fungi in the liquid and dry coating state, and then diluted by adding water. The viscosity of the tens of thousands of cPs measured at room temperature with a Brookfield viscometer It can be used as a paper paste by adjusting it to (at room temperature). On the other hand, the powdered dopant is a product of adjusting the molecular weight and functional group of the starch in order to improve the water solubility, it can be used by dissolving it in water to have an appropriate viscosity.

The starch may contain a large amount of water at a relatively low weight without releasing volatile organic compounds harmful to the human body as a natural material. When the starch is used as a paper paste, it can be stored for several days if it is sealed with a blocking material even after the wallpaper is applied to the wallpaper, and the modification work can be performed within a predetermined time even after the wallpaper is attached to the wall. However, when starch is used alone as a dopant paste, the coating film adhered to the starch due to the formation of a crystalline region such as amylopectin structure through strong hydrogen bonds between some starch molecules. Portions may form and cause otitis.

Therefore, in the present invention, in order to overcome the low bleeding-prevention performance of the starch, a hydrophilic resin that can form a relatively dense coating film having excellent compatibility with starch is used.

The hydrophilic resin may be a polymer or copolymer in which at least one monomer selected from ethylenically unsaturated monomers is polymerized.

The ethylenically unsaturated monomers may be vinyl esters, acrylic acid esters, methacrylic acid esters, vinyl aromatic monomers, conjugated diene monomers, vinyl chloride monomers, nitrile monomers, amide monomers and acid monomers. For example vinyl acetate, vinyl propionate, vinyl butyrate, vinyl versatate, vinyl neodecanoate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, benzyl methacrylate, Methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxyethyl acrylate, styrene, vinyltoluene, methyl styrene, ethylene, Butadiene, vinyl chloride, vinylidene chloride, acrylonitrile, acrylamide, methacrylic amide, acrylic acid, methacrylic acid, crotonic acid, itaconic acid, fumaric acid, maleic acid, monoalkylmaleate, monoalkylfumarate, monoalkylitaco Nate, vinyl benzoic acid and the like.

In addition, the polymer in which the at least one ethylenically unsaturated monomer is polymerized may be used after being polymerized in a polymer emulsion state that is dissolved in water or uniformly dispersed.

On the other hand, the ethylenically unsaturated monomer may have a total water solubility of at least 3.0 g monomer / 100 g water or more.

The water solubility is the water solubility of 100 g of water or 100 ml of water, as described by Peter A. Lovell and Mohamed S. El-Aasser, "Emulsion Polymerization and Emulsion Polymers, 1997, Wiley" and Wikipedia. The data indicate the solubility in water for each monomer. Although the water solubility of the main monomer is shown in Table 1 below, the monomer of the present invention is not limited to the monomer of Table 1 below.

Monomer name Abbreviation Acceptance
(Weight of monomer per 100g of water (g)) source Styrene ST 0.032 (One) Methyl methacrylate MMA 1.59 (One) n-butyl methacrylate BMA 0.08 (2) Vinyl acetate VAc 2.3 (One) Methyl acrylate MA 5 (3) Ethyl acrylate EA 1.51 (One) n-butyl acrylate BA 0.2 (One) 2-ethylhexyl acrylate 2-EHA 0.01 (One) Vinyl neodecanoate VV10 <0.1 (4) Acrylic acid AA ∽ (3) Methacrylic acid MAA 9.9 (3) 2-hydroxyethyl methacrylate 2-HEMA ∽ (2) 2-hydroxyethyl acrylate 2-HEA ∽ (2) Acrylonitrile AN 7.9 (One) Acrylamide AAm 204 (3) 1,3-butadiene BD 0.073 (3) source
(1) "Emulsion Polymerization and Emulsion Polymers, 1997, Wiley" by Peter A. Lovell and Mohamed S. El-Aasser.
(2) International Chemical Safety Cards (ILO-ICSC)
(3) Wikipedia (https://en.wikipedia.org)
(4) Hexion's Technical Data Sheet (2016) of Veova ^TM 10 monomer

The total water solubility of the ethylenically unsaturated monomer can be calculated by the sum of the product of the weight fraction and the water solubility of each monomer. However, additives such as initiators, protective colloids, and emulsifiers which are generally used in small amounts in the polymerization of hydrophilic resins, which are generally used, are excluded from the calculation of water solubility. In addition, highly hydrophilic monomers, such as acrylic acid (AA), 2-hydroxyethyl methacrylate, which can be diluted infinitely in water at 25 ° C. or have a water solubility of 100 g or more. Monomers such as 2-hydroxyethyl acrylate and acrylamide (AAm) can be calculated as follows, considering the water solubility as 100 g monomer / 100 g water.

For example, when the hydrophilic resin is a synthetic resin emulsion obtained by polymerizing methyl methacrylate (MMA) / n-butyl acrylate (BA) / methacrylic acid (MAA) at a weight fraction of 40/30/30, respectively, monomers thereof Total water solubility of the present invention was (1.59 g MMA / 100 g water x 0.4) + (0.2 g BA / 100 g water x 0.3) + (9.9 g MAA / 100 g water x 0.3) = 3.7 g monomer / 100 g water The water solubility suitable for may fall within the range.

On the other hand, for example, when the hydrophilic resin is a copolymer emulsion obtained by polymerization at a weight fraction of 50/10/45/5 of styrene (ST) / MMA / 2-ethylhexyl acrylate (2-EHA) / MAA, respectively, The total water solubility of its copolymerized monomers is (0.032 g ST / 100 g water Х 0.5) + (1.59 g MMA / 100 g water Х 0.1) + (0.01 g 2-EHA / 100 g water Х 0.45) + (9.9 g MAA / 100 g water Х 0.05) = 0.7 g monomer / 100 g water may be outside the range of water solubility suitable for the present invention.

Based on the solid content of the dopantula composition, the weight ratio of the starch and the hydrophilic resin may be included in an amount of 80 to 30: 20 to 70, for example, 70 to 40: 30 to 60. When the weight ratio of starch and hydrophilic resin based on the solid content of the dopantula composition is out of the above range, for example, when the content of starch exceeds 80 parts by weight based on the solid content of the dopantula composition, the effect of preventing dye transfer is remarkable. May decrease. In addition, when the content of the starch is less than 20 parts by weight based on the solid content of the seedling paste composition, the drying of the seedling paste composition is faster, resulting in poor storage properties during maturation after wallpapering, thereby significantly reducing workability during the construction of the wallpaper. Problems may arise.

Doppler composition of the present invention may further include additives such as thickeners, preservatives, fillers.

The thickener can be used without limitation so long as it can control the flowability of the dopantula composition. Examples of the thickener may be a water-soluble cellulose thickener, an alkali swellable acrylic resin emulsion, a hydrophobically modified ethylene oxide urethane, an aqueous inorganic clay thickener, an aqueous amide wax, and the like.

The preservative is to prevent the decayed by the microorganisms in the wet state before application, and to prevent mold in the dry state after construction, if used in water-based paints, adhesives, food, cosmetics, etc. Can be. Examples of the preservative may be isothiazoline derivatives, dimethyldithiocarbamate, sorbic acid and salts thereof, benzoic acid and salts thereof, sodium nitrite, parabens, phenoxyethanol, phenols, copper compounds and the like.

In addition, the filler may be used without limitation as long as it can identify the painted surface, increase the economic efficiency, or perform a function that can assist the anti-dyeing performance. Pigments, color pigments and functional fillers may be used.

The dopant composition may be adjusted to a viscosity of 100 to 300,000 cPs measured at 25 ° C. with a Brookfield viscometer. When the viscosity is less than 100 cPs, the effect of preventing bleeding may be insignificant. When the viscosity is greater than 300,000 cPs, brush marks or roller marks may be left during application, resulting in poor appearance of the coating. On the other hand, the dopant composition may be applied to the wallpaper more than one time using a brush, roller, or an automatic dopant applicator, in particular, when using the automatic dopant applicator viscosity of the dopant composition is tens of thousands of cPs level Can be. When the viscosity of the dopant composition is tens of thousands of cPs when the automatic dopant applicator is used, uniform coating is achieved and good glue fixation on the wallpaper surface and very good adhesion when applied to the wall surface can be obtained. In addition, the dopant composition is very easy to wash water even after standing for several days after using the automatic dopant applicator.

Such a dopant composition of the present invention may be mixed with other adhesives such as starch dopant, synthetic resin adhesives or primers that are commonly used in consideration of cost reduction, workability and improved adhesion. At this time, the dopantula composition of the present invention and the other adhesive may be mixed in a weight ratio of 30 to 100: 0 to 70 based on the respective solids. When the mixing ratio of the other adhesive is included in more than 70% by weight, the bleeding prevention effect exerted by the doppler composition of the present invention can be reduced.

2. Wallpaper construction method

The present invention provides a construction method of the wallpaper using the above-mentioned doubly paste composition.

The construction method of the wallpaper includes applying the dopantula composition to one surface of the wallpaper and attaching the dopant-coated wallpaper to a wall surface.

The dopant paste composition may be to apply a method such as spraying, brush painting, roller coating, knife coating or roll coating to one surface of the wallpaper by using an automated facility or by manpower, may be applied to the wallpaper at least once. have. For example, the wallpaper may be a silk wallpaper, and another example may be a polyvinyl chloride (PVC) -based silk wallpaper.

On the other hand, before attaching the wallpaper coated with the dopant paste composition to the wall surface, the wallpaper coated with the dopant paste composition is sealed with a blocking material such as a plastic bag or an aluminum bag to prevent drying of the wet paste paper in a wet state for 20 minutes to 7 minutes. The process of maturing for days may be more rough. In the case of going through this process it is possible to obtain a smooth appearance surface without wrinkles after construction.

In the present invention, in order to attach the wallpaper to the wall surface, the wallpaper is cut. At this time, after coating the wallpaper on the wallpaper, the wallpaper is applied to the wall, or the wallpaper is coated on the cut wallpaper and the wallpaper is attached to the wall. have.

The wall surface may be a gypsum board, which is a board for building interiors coated or molded with a high surface.

When the wallpaper is applied to recycled paper such as gypsum board paper using the above-mentioned paper paste composition of the present invention, it is possible to remarkably improve the problem of the appearance of colored spots on the wallpaper surface due to the dye component contained in the gypsum board paper using recycled paper. This can further improve the appearance quality of the wallpaper.

Hereinafter, the present invention will be described in detail with reference to Examples. However, embodiments according to the present invention can be modified in many different forms, the scope of the present invention should not be construed as limited to the embodiments described below.

Example 1

Manufacture of Hydrophilic Acrylic Synthetic Resin Emulsion

400 g of deionized water, 0.5 g of sodium dodecylbenzenesulfonate and 0.5 g of sodium bicarbonate were added to a 3 L, four necked flask equipped with a thermostatically controlled heating mantle, thermocouple, condenser, stirrer, and dropping tank. It heated to 80 degreeC, putting. Then, an aqueous solution in which 0.5 g of ammonium persulfate was dissolved in 16 g of deionized water was added to the flask. While maintaining a reaction temperature of 80 ° C., a monomer mixture consisting of 10.5 g of acrylonitrile, 11.4 g of methyl methacrylate and 0.5 g of methacrylic acid was added dropwise for 30 minutes to prepare a seed polymer. Subsequently, a solution of 1.4 g of sodium persulfate dissolved in 30 g of deionized water was added to the flask, 130 g of deionized water, 1.5 g of sodium dodecylbenzenesulfonate, 84 g of butyl acrylate, and the reaction temperature was maintained at 80 ° C. Pre-emulsion was made by adding 80 g of methyl methacrylate, 65 g of methacrylic acid and 2 g of dodecyl mercaptan. The whole emulsion was slowly dropped into the reactor over 120 minutes, held for 30 minutes, and cooled down to room temperature. The calculated total water solubility of the monomers used in the polymerization of the hydrophilic acrylic synthetic resin emulsion corresponded to 3.6 g monomer / 100 g water.

<Preparation of Dried Paste Composition>

In order to prepare the dopantula composition containing the acrylic synthetic resin emulsion prepared above, the process of mixing with the starch paste was performed as follows.

First, a commercially available starch paste (Samsung Industrial Co., Ltd., 20% solids) was prepared, samples were taken and left for 30 minutes in an oven at 150 ° C., and the solids were measured by weight to determine 19.5%.

Meanwhile, 1,150 g of deionized water was mixed with 1,000 g of the synthesized acrylic synthetic resin emulsion (solid content 45%). Again, samples were taken for solids measurement, and weighed after leaving for 30 minutes in an oven at 150 ° C., where the solids content was 20.9%. The starch paste and the hydrophilic acrylic synthetic resin emulsion were mixed at a weight ratio of 7: 3 based on the solids measured before, to finally prepare a dopant paste composition.

Example 2

<Preparation of vinyl acetate synthetic resin emulsion>

360 g deionized water, 1.2 g sodium acetate, 20% solids 34 g nonionic emulsifier (NS 230), 10% solids, in a 2-liter, four-necked flask equipped with a self-adjustable heating mantle, thermocouple, condenser, stirrer and drip tank 440 g of polyvinyl alcohol (217E) was added thereto, and heated to 65 ° C while blowing nitrogen. Thereafter, 90 g of vinyl acetate was added dropwise to the flask for 10 minutes to emulsify it. A solution of 1.6 g of sodium stannate dissolved in 20 g of deionized water was added dropwise to the flask, and then a polymerization reaction was started while dropwise adding a solution of 4 g of ammonium persulfate in 20 g of deionized water. After raising the temperature of the flask to 70 ℃, a monomer mixture consisting of 710 g of vinyl acetate, 200 g of vinyl versatate (Beoba 10) and 280 g of methacrylic acid was added dropwise for 180 minutes while maintaining the reaction temperature. After the dropping was completed, the reaction was carried out at 75 ° C. for 60 minutes, and then the temperature was lowered to terminate the polymerization reaction. The calculated total water solubility of the monomers used in the polymerization of the commercialized vinylacetate synthetic resin emulsion was 3.6 g monomer / 100 g water.

<Preparation of Dried Paste Composition>

In order to prepare the dopantula composition containing the vinyl acetate-based synthetic resin emulsion prepared above, mixing with starch paste was performed. However, the solid content of the starch paste used the same thing as Example 1 mentioned above.

After mixing 1,570 g of deionized water in 585 g of the synthesized vinyl acetate synthetic resin emulsion (77% solids content), the sample was taken and left for 30 minutes in an oven at 150 ° C., weighed, and the solids were measured. The value was 20.9%. The starch paste composition was prepared by mixing the starch paste and the vinyl acetate synthetic resin emulsion in a weight ratio of 7: 3 based on the solid content measured above.

Example 3

<Production of styrene synthetic resin emulsion>

161.6 g of deionized water, 9.43 g of styrene and 5.39 g of methacrylic acid were added to a 1 L, four-necked flask equipped with a thermostatically controlled heating mantle, thermocouple, condenser, stirrer, and dropping tank, and the temperature was maintained at 80 ° C. Then, in order to perform the first polymerization, an aqueous solution in which 0.97 g of ammonium persulfate was dissolved was added to 10.77 g of distilled water. Thereafter, 63.08 g of methacrylic acid, 75 g of styrene, 33.29 g of 2-ethylhexyl acrylate, and 0.97 g of ammonium persulfate were dissolved in 107.73 g of deionized water and then added dropwise to the flask maintained at 80 ° C. for 3 hours. After the dropping was completed, the mixture was aged for 1 hour, and then a solution containing 0.11 g of ammonium persulfate dissolved in 1.62 g of deionized water and 0.11 g of sodium metabisulfate dissolved in 1.62 g of deionized water was added to the flask for reaction. I was. After all reactions were completed, the temperature of the flask was lowered to complete the polymerization of the styrene synthetic resin emulsion. The calculated total water solubility of the monomers used in the styrene-based synthetic resin emulsion polymerization was 3.6 g monomer / 100 g water.

<Preparation of Dried Paste Composition>

In order to prepare a doppler composition containing the styrene-based synthetic resin emulsion prepared above, a process of mixing with starch paste was performed. However, the solid content of the starch paste used the same thing as Example 1 mentioned above.

After mixing 910 g of deionized water in 1000 g of the synthesized styrene synthetic resin emulsion (solid content 40%), taking a sample, and standing at 150 ° C. in an oven for 30 minutes, weighing the solid content, and measuring the solid content, Was 20.9%. The starch paste composition was prepared by mixing the starch paste and the styrene-based synthetic resin emulsion in a weight ratio of 7: 3 based on the solid content measured above.

Example 4

<Preparation of core-shell acrylic synthetic resin emulsion>

In a 2-liter, four-necked flask equipped with a thermostatically controlled heating mantle, thermocouple, condenser, stirrer, and dropping tank, 261.3 g of deionized water and 0.4 g of sodium dodecylbenzenesulfonate were added. After heating to 80 ° C. while blowing nitrogen into the flask, an aqueous solution of 0.1 g of ammonium persulfate dissolved in 11 g of deionized water was added thereto. A monomer mixture consisting of 10.0 g of n-butylacrylate, 4.4 g of methyl methacrylate and 0.2 g of methacrylic acid was added dropwise to the flask for 30 minutes while maintaining the reaction temperature at 80 ° C., and the same reaction temperature was maintained for 30 minutes. To prepare the seed polymer. Thereafter, an aqueous solution of 0.3 g of sodium persulfate dissolved in 14.5 g of deionized water was added to the flask containing the seed polymer, and then maintained at a reaction temperature of 80 ° C. for 10 minutes. Subsequently, the monomer composition for core part formation consisting of 42.9 g of deionized water, 0.6 g of sodium dodecylbenzenesulfonate, 29.2 g of methacrylic acid, 18.6 g of n-butylacrylate, and 9.6 g of methyl methacrylate was then used for 90 minutes. It was added uniformly while maintaining at 80 ℃. After the addition was completed, it was additionally maintained at 80 ° C. for 60 minutes. Thereafter, an aqueous solution of 0.6 g of sodium persulfate dissolved in 33.8 g of deionized water was added to the flask and maintained at 80 ° C. for 10 minutes. Subsequently, a monomer composition for shell part formation consisting of 101.2 g of deionized water, 2.0 g of sodium dodecylbenzenesulfonate, 38.5 g of methacrylic acid, 67.5 g of n-butylacrylate, and 38.0 g of methyl methacrylate was prepared. It was added uniformly for 90 minutes at ℃. After the addition was completed, the mixture was maintained at 80 ° C. for 60 minutes, then heated to 87 ° C. and maintained at the temperature for 60 minutes, and then cooled to room temperature to complete polymerization of the hydrophilic emulsion resin. The calculated total water solubility of the monomers used in the coreshell acrylic synthetic resin emulsion polymerization was 3.6 g monomer / 100 g water.

<Preparation of Dried Paste Composition>

In order to prepare a seedling paste composition containing the prepared core-shell acrylic synthetic resin emulsion, a process of mixing with starch paste was performed. However, the solid content of the starch paste used the same thing as Example 1 mentioned above.

1,150 g of deionized water was mixed with 1,000 g of the synthesized core-shell emulsion resin (solid content 45%), and a sample was taken to obtain 150 ° C? After standing in the oven for 30 minutes, the weight was measured and the solid content was 19.9%. The starch paste and the coreshell acrylic synthetic resin emulsion resin were mixed in a weight ratio of 7: 3 based on the solid content to prepare a paper paste composition.

Comparative Example 1

Hydrophobic Vinyl Acetate-based Synthetic Resin Emulsion and Doubly Pull Composition

A vinylacetate-based synthetic resin emulsion was prepared in the same manner as in Example 2, except that the monomer mixture was composed of 210 g of vinyl acetate, 800 g of vinyl versatate (Beoba 10) and 180 g of methacrylic acid. Obtained dopant composition. The calculated total water solubility of the monomers used in the hydrophobic styrenic synthetic resin emulsion polymerization was 2.0 g monomer / 100 g water.

Comparative Example 2

Hydrophobic Styrene-based Synthetic Resin Emulsions

After the first polymerization, the vinyl acetate-based synthetic resin was carried out in the same manner as in Example 3, except that 8.08 g of methacrylic acid and 75 g of styrene were used in 107.73 g of deionized water in which 0.97 g of ammonium persulfate was dissolved. An emulsion and a dopant composition were obtained. The calculated total water solubility of the monomers used in the hydrophobic styrenic synthetic resin emulsion polymerization was 0.8 g monomer / 100 g water.

Comparative Example 3

<Starch paste for paper without synthetic resin>

A commercial starch paste (Samsung Industrial Products, 20% solids) was prepared. The sample of the starch pool was taken and left for 30 minutes in an oven at 150 ° C., and the solid content was measured and weighed. The solid content was 19.5%. For comparative experiments, 70% by weight of the starch paste for water and 30% by weight of water were uniformly prepared to prepare a dopula composition, and then samples were taken and left for 30 minutes in an oven at 150 ° C. As a result, solid content was 13.5%.

Comparative Example 4

<Hydrophobic do primer>

Commercially available water-based primers (Ohpo Bond Co., Ltd., 501 primer, 20% solids synthetic resin emulsion (monomer analysis, weight ratio corresponds to styrene / 2-ethylhexyl acrylate / n-butyl acrylate = 46/53/1) A small amount of hydroxyethyl cellulose (Natrasol 330+) was added to prepare a dopant composition having a viscosity of 100,000 ± 50,000 cPs at 25 ° C. A sample of the dopant composition was taken and 30 at 150 ° C. in an oven. After standing for one minute, the weight was measured and the solid content was 20.2%.

The calculated total water solubility of the monomers used in the commercialized hydrophobic do primer primer was 0.02 g monomer / 100 g water.

Comparative Example 5

<Styrene-butadiene rubber (SBR) latex for paper>

Styrene-butadiene rubber (SBR) latex (Hansol Chemical, S-203, styrene / butadiene = 45/55, 47% by weight of solids), which is commercially available binder, is mixed with 135 g of deionized water. A composition for preparation was prepared. A sample of the doping composition was taken and left for 30 minutes in an oven at 150 ° C. and weighed to measure solids. The solids content was 20.2%.

The calculated total water solubility of the monomers used in the commercialized hydrophobic do primer primer was 0.05 g monomer / 100 g water.

Experimental Example 1: Evaluation of anti-inflammation effect

Acetone was sprayed onto the gypsum board stock (general gypsum board, manufactured by Acea Paper Co., Ltd.), and then cut out of both red and blue spots that appeared after a while. Twenty spots cut out from 20cm x 20cm gypsum board were evenly glued. Commercially available silk wallpaper (Shinhan Wallpaper Co., Ltd., Living Sandwick) was applied evenly once with each brushing composition prepared in Examples and Comparative Examples and attached to the surface of gypsum board paper with spots. After standing at room temperature for 1 month, the phenomenon of colored spots on the surface of the silk wallpaper was visually observed. The number of spots on the silk wallpaper and the expression intensity of the total 20 spot adhesion sites were evaluated to prevent bleeding of the dopantula composition, and the results are shown in Table 2 below.

division Number of colored spots on wallpaper after 1 month (expression intensity) Example 1 0/20 (about) Example 2 3/20 (about) Example 3 2/20 (about) Example 4 2/20 (about) Comparative Example 1 5/20 (middle) Comparative Example 2 8/20 (strong) Comparative Example 3 20/20 (strong) Comparative Example 4 15/20 (strong) Comparative Example 5 14/20 (middle)

As can be seen in Table 2, in Examples 1 to 4, which are dopalyse compositions having a total water solubility of 3.0 g monomer / 100 g or more, the number of colored spots expressed on the silk wallpaper after 1 month was 0 to 4. On the other hand, Comparative Examples 1 and 2, which are doubly-curable compositions containing hydrophobic resins, had five or eight colored spots, respectively, and Comparative Examples 4 and 5 having a water solubility value of 0.02 or 0.05 monomer / 100 g of water. 14 or 15 colored spots were observed. In addition, 20 colored spots were observed in the case of the comparative example 3 which is a dopant composition containing only the starch paste for drawing.

Experimental Example 2: Evaluation of Adhesive Strength

The adhesive strength of the dopant composition prepared in Examples and Comparative Examples was evaluated according to the adhesive strength standard of KS F 3217 (Revision 2010). If it exceeds the standard value of 8.0 N / 25 mm standard "good", if not exceeded evaluated as "bad", the results are shown in Table 3 below.

division Adhesive strength Example 1 Good Example 2 Good Example 3 Good Example 4 Good Comparative Example 1 Good Comparative Example 2 Good Comparative Example 3 Good Comparative Example 4 Good Comparative Example 5 Good

As can be seen from Table 3, in both Examples 1 to 4 and Comparative Examples 1 to 5, the adhesive strength was good.

Experimental Example 3: Evaluation of Dry Stability and Adhesiveness

The paper paste composition prepared in Examples and Comparative Examples was uniformly applied to the silk wallpaper (living sandwick, Shinhan Wallpaper Co., Ltd., product of Shinhan Wallpaper Co., Ltd.) by 4 g each using a brush. Thereafter, the coated surface to which the dopant paste composition was applied was folded in half, sealed and packaged in a plastic bag, and then aged for 5 days (120 hours). After the aging was completed, whether or not the agglomerate composition was agglomerated and dried on the coated surface to which the dopant paste composition was applied was visually observed.

In addition, the aged silk wallpaper was attached to the gypsum board to evaluate the adhesiveness after aging of the seedling composition. When the dopant composition remained uniformly in the sol form on the surface of the dopant composition, it was evaluated as 'good', when the dopant composition was agglomerated as 'agglomeration' and when the dopant composition was dried as 'dry'. In addition, when the adhesion of the silk wallpaper on the gypsum board is good 'good', if poor, it was evaluated as 'bad'.

division Drying Stability of Dried Pasture Composition after Aging Adhesiveness of Dried Pasture Composition After Aging Example 1 Good Good Example 2 Good Good Example 3 Good Good Example 4 Good Good Comparative Example 1 Bunch Bad Comparative Example 2 dry Bad Comparative Example 3 Good Good Comparative Example 4 dry Bad Comparative Example 5 Bunch Bad

As can be seen in Table 4, while the hydrophilic resin, Examples 1 to 4, which is a dopant composition having a total water solubility of 3.0 g monomer / 100 g or more water, both dry stability and adhesion are good, Comparative Examples 1 and 2 including a hydrophobic resin showed dry stability or dried agglomeration, and had poor adhesion. In addition, even in Comparative Examples 4 and 5 in which the water solubility value of the monomer was 0.02 or 0.05 monomer / 100 g of water, the dried or agglomerate showed dry stability, and the adhesion was also poor.

Through the above results, when the total water solubility of the monomers is less than 3.0g monomer / 100g water as in Comparative Examples 1 and 2 or Comparative Examples 4 and 5 containing a hydrophobic resin, the drying speed of the water is relatively fast, so that the drying stability after aging And it turns out that adhesiveness is not good.

Experimental Example 4: Water washability when using an automatic paper paste applicator

The dopant composition prepared in Examples and Comparative Examples was uniformly applied to the applicator roller using an automatic dopant applicator. After the application was finished, the applicator was sealed with a plastic bag and stored for 2 days. The water washability of the dopant composition remaining in the applicator was then evaluated. After washing, the roller was evaluated as 'good' if there was no residual amount of dopant paste, and if it was 'bad', the results are shown in Table 5 below.

division Automatic Paper Paste Applicator Example 1 Good Example 2 Good Example 3 Good Example 4 Good Comparative Example 1 Good Comparative Example 2 Bad Comparative Example 3 Good Comparative Example 4 Bad Comparative Example 5 Bad

As can be seen from Table 5, the water washability of Examples 1 to 4, in which the total water solubility of the monomers was at least 3.0 g monomer / 100 g water, was all good. On the other hand, in the case of Comparative Examples 4 and 5 in which the total water solubility of the monomers did not satisfy 3.0 g monomer / 100 g or more, the water washability was poor.

Claims (5)

Starch and at least one ethylenically unsaturated monomer comprising a hydrophilic resin obtained by polymerization,
The total water solubility of said ethylenically unsaturated monomer is at least 3.0 g monomer / 100 g water or more.
The method according to claim 1,
The hydrophilic resin is a doppler composition formed by the polymerization of an ethylenically unsaturated monomer.
The method according to claim 1,
The weight ratio of the starch and the hydrophilic resin based on the solid content of the dopantula composition is 80 to 30: 20 to 70 content of the dopantul composition.
Applying the dopantula composition according to any one of claims 1 to 3 on one side of the wallpaper; And
And attaching the wallpaper coated with the dopantula composition to a wall surface.
The method according to claim 4,
The method of wallpaper construction further comprises aging for 20 minutes to 7 days before the wallpaper is applied to the wallpaper, the wallpaper is applied to the wallpaper.