JP2006077367A - Deodorant coating agent and deodorant decorative paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing coating agent that chemically decomposes odor components and has antibacterial properties in addition to physical absorption of odors and that does not impair the quality of the pattern layer itself, and the deodorizing coating agent thereof An object of the present invention is to provide a deodorant decorative paper laminated with the above.
SOLUTION: A deodorizing coating agent comprising a synthetic resin liquid mixed with a chemical absorption deodorant (powder) 14 as a main ingredient and fine powdery metal-supported zeolite 15 dispersed in the main ingredient. The coating agent is formed by laminating a deodorant functional protective layer 13 on a pattern layer 12 provided on a paper-based wallpaper base material 11.
[Selection] Figure 1

Description

  The present invention relates to a deodorizing coating agent and a deodorizing decorative paper, and in particular, is a deodorizing coating agent useful as an OP varnish (protective varnish, OP agent), and manufactures a decorative paper that is an interior material of a building material. It can be used in the printing process when performing odor components (both sweat odors, aging odors, excretion odors, or volatile organic compound odors) by combining physical adsorption with chemical decomposition or photocatalytic decomposition. The present invention relates to a deodorizing coating agent and a deodorizing decorative paper having antibacterial properties while being erased.

  Conventionally, as a deodorant, there are charcoal, diatomaceous earth, activated carbon, zeolite, and the like, and as an interior material of a building, there is one in which these substances are pasted in a sheet form. FIG. 2 shows a deodorant decorative paper, in which an activated carbon sheet 3 is interposed between a paper substrate 1 and a breathable surface material 2, and adsorbs a volatile organic compound (VOC) such as formaldehyde. (For example, Patent Document 1).

  In addition, there are decorative papers that adsorb unpleasant odors in rooms such as ordinary houses and hospitals and have antibacterial properties. Referring to FIG. 3, this decorative paper is obtained by sequentially laminating a foamable resin layer 5, a pattern layer 6, an inorganic layer 7, and a photocatalytic functional layer 8 on one side of a base material 4 and embossing. . The photocatalyst functional layer 8 is formed by adding photocatalyst particles to water glass or the like, coating the photocatalyst particles on a foamable resin, spraying and sprinkling, and then heating and foaming to form embossing. When this decorative paper is irradiated with light, antibacterial properties are imparted by the photodegradation action of the photocatalytic functional layer 8. Furthermore, if antibacterial zeolite or the like of the photocatalytic function layer 8 is mixed, the antibacterial property is exhibited even when light is not applied (for example, Patent Document 2).

JP 2004-162185 A (all pages of the specification, drawing 1) Japanese Patent Application Laid-Open No. 10-180943 (all pages of the specification, drawing 1)

  In the conventional deodorant decorative paper (Patent Document 1), an activated carbon sheet is interposed between the paper base material and the surface material, and the activated carbon has a function of absorbing and confining malodor, but a function of decomposing malodorous components. In addition, when a pattern layer is provided on one side of a paper base material, it is covered with an activated carbon sheet, and the use as a decorative paper cannot be achieved. Moreover, when a pattern is printed on the surface material, a protective layer must be further applied to the surface material. Of course, it is not possible to disperse the activated carbon in the protective layer because the surface of the pattern layer is colored black.

  The conventional deodorant decorative paper (Patent Document 2) is a decorative paper used as an interior material of a building. In this deodorized decorative paper, a photocatalytic function layer is formed on an inorganic layer, and a photocatalytic function is provided. The layer provides antibacterial properties, but mainly deodorizes the photocatalyst particles by the action of ultraviolet rays, and the odor is physically adsorbed indoors where the ultraviolet rays are weak, but the decomposition rate is slow and the deodorant There is little immediate effect as an action. In addition, an inorganic layer and a photocatalytic functional layer are formed on the pattern layer, so that the color difference before and after coating becomes extremely large, and it is impossible to provide decorative paper excellent in design.

  The present invention has been made in view of the above problems, and in addition to the physical absorption of odors, the odor components are non-brominated by a chemical reaction and have antibacterial properties, and the color change of the pattern layer itself. An object of the present invention is to provide a deodorant coating agent that reduces the amount of deodorant and a deodorized decorative paper laminated with the deodorant coating agent.

  The present invention has been made in order to solve the above-mentioned problems. The invention of claim 1 is based on a synthetic resin liquid mixed with a chemical absorption deodorant as a main agent, and a finely powdered metal-supported zeolite is dispersed in the main agent. It is a deodorant coating agent characterized by the above.

  The invention according to claim 2 is characterized in that the metal-supported zeolite having an average particle diameter of 4 to 10 μm supporting silver ions is 0.5 to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant. The deodorant coating agent according to claim 1, wherein 30 parts by weight is added. When the amount of the metal-supported zeolite is less than 0.5 parts by weight, the ability to chemically change the odor component is inferior, and when it exceeds 30 parts by weight, the light transmission is hindered. Preferably, the mixing amount of the metal-supported zeolite is 1 to 10 parts by weight.

  The invention according to claim 3 is the deodorant coating agent according to claim 1, wherein the metal-supported zeolite supports photocatalytic titanium oxide.

The invention of claim 4 is a deodorant coating agent characterized in that an acrylic resin liquid mixed with silica / alumina fine powder is used as a main agent, and a fine powdery metal-supported zeolite is dispersed in the main agent. is there. Silica / alumina has a molecular structure of RSiO _3/2 · Al ₂ O ₃ , and R is an alkyl group —CH ₃ , —C ₂ H ₅ ,.

  The invention according to claim 5 is the deodorant coating agent according to claim 4, wherein the metal-supported zeolite supports silver ions or photocatalytic titanium oxide.

  The invention according to claim 6 is the deodorant decorative paper according to any one of claims 1 to 5, wherein the deodorant functional protective layer has a pattern layer. is there.

  In addition, when the deodorant functional protective layer is applied on the pattern layer, the invention according to claim 7 has a film thickness of the deodorant functional protective layer laminated on the pattern layer and the metal-supported zeolite. The deodorant decorative paper according to claim 6, wherein the mixing ratio is set so that the color difference ΔE * ab before and after coating is 5 or less.

  The invention according to claim 8 is the deodorized decorative paper according to claim 7, wherein the metal-supported zeolite supports silver ions.

  The invention according to claim 9 is the deodorized decorative paper according to claim 7 or 8, wherein the lightness L * of the pattern layer before coating is 50 or more.

  In the invention of claim 10, the number of parts of the metal-supported zeolite added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant is P parts by weight (0.5 ≦ P ≦ 30). The deodorant decorative paper according to any one of claims 6 to 9, wherein when the film thickness of the deodorant functional protective layer is Tm, the relational expression P · T≤110 is satisfied. In addition, 110 of this relational expression is the product of the content of the deodorant and the thickness of the coating film containing the deodorant, and the relationship between the content P and the film thickness T of the coating film is approximately proportional, and the product Means the maximum value of.

  The invention of claim 11 is such that the number P parts by weight of the metal-supported zeolite added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant is in the range of 0.5 ≦ P ≦ 30. 10. The color difference ΔE * ab before and after coating of the picture layer due to the film thickness Tμm of the deodorant functional protective film is set to be 5 or less. The deodorant decorative paper described in 1.

  In the invention of claim 1, since it is a deodorizing coating agent characterized in that a synthetic resin liquid mixed with a chemical absorption deodorant is used as a main agent, and a finely powdered metal-supported zeolite is dispersed in the main agent. By applying a deodorant coating agent on the surface of the pattern by a coating machine or printing, the adsorption of odor due to the porous shape of the metal-supported zeolite and the decomposition and antibacterial action of odor components by metal ions such as silver ions In addition, a chemical absorption deodorant is mixed, and the odorous gas adsorbed by the porous zeolite is chemically reacted with the odorous substance once. The reacted odor substance is not released again and the deodorizing effect is further improved. In addition, the deodorant coating agent can be used as a top coat agent or the like, in which a metal-supported zeolite and a chemical absorption deodorant are dispersed in a main component of a synthetic resin liquid. Moreover, even if this deodorant coating agent is applied to the surface on which the pattern is applied by gravure, flexo, silk screen printing or the like, if it is set below a certain level of concealment, there is little risk of impairing the design of the pattern.

  Further, in the invention of claim 2, the metal-supported zeolite having an average particle diameter of 4 to 10 μm supporting silver ions is 0.5 to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant. Since the deodorant coating agent according to claim 1, wherein 30 parts by weight is added, the deodorant coating agent can be used as a deodorant functional protective layer (top coat layer), Depending on the brightness of the pattern layer, for example, by adjusting the mixing ratio of the silver-supported zeolite, it does not impair the design of the pattern layer and contains a chemical absorption deodorant. It has a function to change.

  The invention according to claim 3 is the deodorant coating agent according to claim 1, wherein the metal-supported zeolite supports a photocatalytic titanium oxide, and the metal-supported zeolite supports a photocatalytic titanium oxide. Because it is a fine particle of zeolite (photocatalyst-carrying zeolite), a protective layer with a deodorant coating agent in which the photocatalyst-carrying zeolite is mixed with a synthetic resin liquid base material is coated on decorative paper to form a deodorant functional protective layer Even as a deodorant decorative paper, the design properties of the pattern layer are not impaired, and the antibacterial and deodorant properties can be enhanced by the photodegradation action by the photocatalyst.

  According to a fourth aspect of the present invention, there is provided a deodorant coating agent characterized in that an acrylic resin liquid mixed with silica / alumina fine powder is used as a main agent, and a fine powdery metal-supported zeolite is dispersed in the main agent. Yes, metal-supported zeolite has adsorptive and antibacterial properties, deodorizing effect due to adsorption of zeolite and silica / alumina, and metal-supporting zeolite antibacterial and antibacterial properties. .

  Further, in the invention of claim 5, since the metal-supported zeolite supports silver ions or photocatalytic titanium oxide, the deodorizing coating agent according to claim 4, wherein the metal-supporting zeolite depends on silver or photocatalytic titanium oxide. The antibacterial and deodorant properties of the deodorized decorative paper can be enhanced by the chemical change of the deodorant component.

  Moreover, in invention of Claim 6, in the deodorizing coating agent in any one of Claims 1-5, the said deodorizing functional protective layer has on a design layer, In the deodorizing decorative paper characterized by the above-mentioned. Therefore, antibacterial and deodorant properties can be imparted, and the pattern can be protected as a top coat layer.

  In the invention of claim 7, the film thickness of the deodorizing functional protective layer laminated on the pattern layer and the mixing ratio of the metal-supported zeolite are such that the color difference ΔE * ab before and after coating of the pattern layer is 5 or less. The deodorant decorative paper according to claim 6, wherein the pattern is used as a top coat layer without impairing the design of the pattern layer if the color difference ΔE * ab is 5 or more. Can be protected, and a deodorizing function can be imparted.

  In the invention of claim 8, since the metal-supported zeolite is a deodorizing decorative paper according to claim 7, characterized in that the silver-supporting zeolite, the chemical absorption deodorant, Deodorant functional protective layer containing odor protects the pattern layer, enhances the adsorption of odorous gas by porous zeolite, can impart deodorant and antibacterial properties to decorative paper, and the protective layer It is a substantially transparent layer and does not impair the design of the pattern layer.

  Moreover, in invention of Claim 9, since the lightness L * of the said pattern layer before coating is 50 or more, since it is a deodorizing decorative paper of Claim 7 or 8, it is a white powder. If the brightness of the pattern layer is 50 or more with respect to the white coating solution due to the silver-supporting zeolite, the difference in contrast between the color of the paper pattern layer and the whiteness of the coating solution is small. There is little possibility of impairing the design properties of.

  In the invention of claim 10, the number of parts of the metal-supported zeolite added to 100 parts by weight of the synthetic resin mixed with the chemical absorption deodorant is P parts by weight (0.5 ≦ P ≦ 30), The deodorizing decorative paper according to any one of claims 6 to 9, wherein when the film thickness is Tμm, the relational expression P · T ≦ 110 is satisfied. From the above, by setting the film thickness Tμm of the deodorant functional protective layer to a value of 110 or less, it is possible to impart deodorant properties and antibacterial properties without impairing the design properties of the pattern layer.

  In addition, in the invention of claim 11, the number P parts by weight of the metal-supported zeolite to be added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant is in the range of 0.5 ≦ P ≦ 30. 10. The color difference ΔE * ab before and after coating of the picture layer due to the film thickness Tμm of the deodorant functional protective film is set to be 5 or less. Therefore, the design can be protected as a top coat layer and a deodorizing function can be imparted without impairing the design of the design layer.

Hereinafter, embodiments of the deodorizing coating agent and the deodorizing decorative paper according to the present invention will be described.
(Embodiment 1)
The deodorant coating agent of the present embodiment contains a finely powdered metal-supported zeolite and a chemical absorption deodorant in a main agent of a synthetic resin liquid (OP agent, OP varnish, etc.), and has an arbitrary viscosity by a diluting solvent. Have Among metal-supported zeolites, for example, silver-supported zeolite is a zeolite having a porous structure (aluminosilicate) supported by ion exchange, adsorption of odor components by the porous structure of the silver-supported zeolite itself, In addition to antibacterial properties and deodorizing function due to silver ions, it combines antibacterial and deodorizing functions due to chemical changes in odor components of chemical absorption deodorants. The mixing ratio is 0.5 to 30 wt.% Of fine powder of silver-supported zeolite with respect to 100 wt. Parts are mixed.

The silver-loaded zeolite, if Shimese in its chemical _{structure, XM 2 / n O · Al} 2 O 3 · YSiO 2 · ZH 2 O be a (M: molar ratio of the components: silver ions, X, Y, Z) In addition, silver ions are added to zeolite which is a kind of crystalline aluminosilicate. It has the function of adsorbing odor components due to the porous structure of the zeolite itself and the function of decomposing odor components by the catalytic action of silver ions.

  Further, the chemical absorption deodorant has a typical odor such as basic gases such as ammonia and trimethylamine, sulfur gases such as hydrogen sulfide and methyl mercaptan, acid gases such as acetic acid and isovaleric acid, and aldehydes. A composite deodorant that can be removed, such as a mixture of a deodorant in a thermoplastic resin solution, a fatty acid group polycarboxylic acid or a salt thereof such as tricarboxylic acid, citric acid, or fumaric acid or a salt thereof The deodorizer is mixed with a thermoplastic resin solution to make a fine powder, and the mixing ratio thereof is, for example, 99.9 to 80 parts by weight of the thermoplastic resin solution with the fatty acid polycarboxylic acid. It is a mixture of 0.1 to 20 parts by weight. Moreover, as a thermoplastic resin, PVC (polyvinyl chloride) and an acrylic resin are used, for example.

This chemical absorption deodorant has the function of chemically changing odorous gas into a non-odorous substance by a chemical reaction and deodorizing it. This chemical absorption mechanism is a chemically stable hydroxide ( Chemical change to MeOH) and sulfide (MeS, XSO ₄ ) to prevent vaporization. For example, ammonia is stabilized by a reaction of Me ¹ Me ² (SO ₄ ) ₂ + 4NH ₃ + 4H ₂ O → 2 (NH ₄ ) ₂ SO ₄ + Me ¹ OH + Me ² (OH) ₃ , and trimethylamine is 2Me ¹ Me ^2. (SO ₄ ) ₂ +2 (CH ₃ ) ₃ N + 8H ₂ O → (NH ₄ ) ₂ SO ₄ +3 (CH ₃ ) ₂ SO ₄ + 2Me ¹ OH + 2Me ₂ (OH) ₃ , the hydrogen sulfide is stabilized by MeO + H _{It is} stabilized by the reaction of ₂ S → Me + H ₂ O, and the odorous gas is chemically changed and absorbed. Note that Me ¹ , Me ² , and Me are metal elements.

  Deodorizing substances having a deodorizing function include zinc oxide, aluminum sulfide, potassium aluminum sulfide, a combination of ferrous sulfate and citric acid, fumaric acid or fumarate, magnesium hydroxide, calcium hydroxide, dihydrazine adipate , Dihydrazine phthalate, etc. are used in appropriate combination. By mixing this deodorant substance into the resin liquid and applying it to the decorative paper surface, it absorbs the following malodorous components such as acetic acid, hydrogen sulfide, acetaldehyde, formaldehyde, ammonia, and trimethylamine. Can be changed to odorless substances.

  The actual bad odor is often a mixture of many complicated substances, and the deodorizing effect can be improved more widely by combining the above deodorizing functional substances, but the substances that absorb relatively bad odor components are limited. Is done. By using zeolite together with the deodorizing substance, it is possible to adsorb the malodorous substance more widely and to expand the range that exerts the deodorizing action. In addition, since the zeolite carries metal ions, the function of decomposing and deodorizing the adsorbed malodorous substance can be further enhanced.

(Embodiment 2)
The deodorant coating agent of this embodiment is a zeolite (hereinafter referred to as “zeolite”) supporting photocatalytic titanium oxide with respect to 100 parts by weight of the above-mentioned fine powder of the chemical absorption deodorant dispersed in the main component of the synthetic resin liquid (OP agent). , Referred to as a photocatalyst-supported zeolite).

(Embodiment 3)
The deodorant coating agent of the present embodiment is a synthetic resin liquid in which silica / alumina is dispersed in an acrylic resin liquid, so-called so-called liquid ceramic is added and dispersed as a metal-supported zeolite fine powder, A metal-supported zeolite powder is mixed in an amount of 0.5 to 30 parts by weight with respect to 100 parts by weight of the main agent. The metal-supported zeolite is preferably silver-supported zeolite. The molecular structure of silica / alumina is represented by RSiO _3/2 · Al ₂ O ₃ . R is an alkyl group —CH ₃ , —C ₂ H ₅ ,...

(Embodiment 4)
The deodorant coating agent of the present embodiment is a synthetic resin in which silica / alumina is dispersed in an acrylic resin, that is, a so-called liquid ceramic in which fine powder of a photocatalyst-supported zeolite is dispersed as a main component. In contrast, 0.5 to 30 parts by weight of fine powder of zeolite supported on a photocatalyst is mixed. The photocatalyst-supported zeolite is one that supports photocatalyst particles such as titanium oxide (TiO ₂ ).

Next, an embodiment of the deodorant decorative paper in the present invention will be described.
The deodorized decorative paper of this embodiment is a deodorized decorative paper that is an interior material of a building material, and is provided with a protective layer that protects the pattern layer surface of the decorative paper or decorative sheet. For this protective layer, the deodorizing coating agent of Embodiments 1 to 4 is used. In this embodiment, this deodorant coating agent is applied or printed on the surface of the pattern layer. FIG. 1 shows a deodorant decorative paper 10 provided with a deodorant functional protective layer according to this embodiment. A pattern layer 12 is provided on one side of a paper-based wallpaper base material 11, and the deodorant functional protection is provided on the pattern layer 12. The layer 13 is laminated.

  The deodorant functional protective layer 13 is coated or printed with the deodorant coating agent of the first and second embodiments, and has a thickness of 0.5 to 12 μm. This layer has a chemical absorption deodorant 14 and a metal support. Zeolite 15 is dispersed to protect the surface of the pattern layer 12 and to have a deodorizing and antibacterial function. In addition, when the deodorizing coating agent of Embodiment 3 and 4 is used, the metal carrying | support zeolite 15 of FIG. 1 is replaced with the photocatalyst carrying zeolite, and the chemical absorption type deodorizing agent 14 is not contained. This deodorization function has the function of decomposing odor components by physical adsorption and photocatalysis, has a function of removing odor components, and can be given an antibacterial effect.

The deodorizing evaluation of the deodorizing decorative paper of the present invention was performed based on the following examples.
Referring to FIG. 1, a paper wallpaper base material 11 is used, and a paper layer 12 having a pattern layer 12 on which a pattern is printed is prepared. The surface of the pattern layer 12) was coated with a deodorant coating agent. The deodorant coating agent prepared AD and produced the sample. A is a chemical reaction liquid (Daimu Shoe VSFW: manufactured by Dainichi Seika Co., Ltd.) in which a chemical absorption deodorant powder is mixed with a base resin (including OP agent) that is a synthetic resin liquid, and B is a silicon-alumina powder. Is a ceramic-based liquid (S & S Co., Ltd.), C is a zeolite-based powder (Lionite: manufactured by Lion), and is a photocatalyst-supported zeolite, and D is a zeolite-based powder (Zeomic: manufactured by Sinanen Zeomic) Yes, it is a silver-supported zeolite.

  Sample 1 was a sample of A coated on the surface of the pattern layer. Sample 2 was a B sample coated on the surface of the pattern layer. Sample 3 was an A + C sample, and C10 wt% was mixed with A90 wt% main agent and applied to the surface of the pattern layer (corresponding to Embodiment 2). Sample 4 was prepared by mixing a B + C sample with 10% C by weight of B90% by weight of the main agent and coating the pattern layer surface (corresponding to Embodiment 4). Sample 5 was a sample of A + D mixed with 10% by weight of D + 90% by weight of the main agent and applied to the surface of the pattern layer (corresponding to Embodiment 1). Sample 6 is a sample of B + D, in which D 10 parts by weight is mixed with B 90 parts by weight of the main agent (corresponding to Embodiment 3). Sample 7 is obtained by dispersing 10 parts by weight of D in ordinary OP varnish. Sample 8 is a paper-based wallpaper base material in which a protective layer is not provided on the surface of a 10 × 10 cm square pattern layer.

  In the deodorization evaluation, the samples 1 to 7 and the sample 8 were cut into 10 cm × 10 cm, covered with a PET film so as not to adsorb odor from the back surface (surface without the pattern layer), and the sample was put in a 5-liter Tedlar bag. Three liters of malodorous gas was injected into a Tedlar bag containing each sample and sealed, and the change over time in the malodorous gas concentration (after 2 hours and 24 hours) was measured with a detector tube (manufactured by Gastec). The measurement results are shown in Tables 1 to 4. There were four types of malodorous gases, methyl mercaptan (10 ppm), hydrogen sulfide (5 ppm), ammonia (100 ppm), and acetaldehyde (100 ppm), and those filled in gas cylinders were used. Tables 1 to 4 show the measurement results of methyl mercaptan, hydrogen sulfide, ammonia and acetaldehyde in order, and the initial concentrations thereof were set to 0.4 ppm, 0.5 ppm, 3.0 ppm and 0.5 ppm, respectively.

  In Tables 1 to 4, sample 1 is a dime, sample 2 is a liquid sera, sample 3 is a dime + rio, sample 4 is a liquid sera + rio, sample 5 is a dime + zeomi, sample 6 is a liquid sera + zeomi, sample 7 was abbreviated as 10% semiomic, and sample 8 was abbreviated as blank. Dime is an abbreviation for Dime Shoe VSFW, Liquid Sera is a liquid ceramic, Rio is a photocatalyst-supporting zeolite, Zeomi and Semiomic are silver-supporting zeolite.

  Tables 1 to 4 show the measurement results remaining in the Tedlar bag as a result of the samples 1 to 8 absorbing the odorous gas. In this measurement result, the chemical absorption deodorant and the silver-supported zeolite of the sample 5 are shown. In the case of methyl mercaptan, hydrogen sulfide, and ammonia, a reduction rate of 100% was found to be the most effective. Moreover, it was also confirmed that Sample 5 had an immediate effect with a reduction rate of 100% after 2 hours. The sample with the best results was the one coated with the deodorant coating agent of Embodiment 1. It was also found that other samples are effective for the odor of hydrogen sulfide.

  In addition, deodorant decorative paper requires design, and when a deodorant functional protective layer is laminated on the pattern layer, especially the zeolite is a white powder, so when coated thick, it becomes white opaque and the pattern layer is hidden. Will be. If the brightness of the pattern layer is less than 50, since the color tone is dark, even if the odor functional protective layer is applied thinly, the white color of the zeolite is conspicuous, and the design properties before and after coating cannot be maintained. Therefore, a deodorant functional protective layer was laminated on a pattern layer having a lightness L * of 50 or more, and the brightness (lightness) of the deodorized decorative paper surface was measured. The measurement results are shown in Table 5. In this lightness measurement, the color difference ΔE * ab in a 10 ° field of view determined by the International Commission on Illumination was measured and shown in Table 5 along with its deodorizing power. The deodorant functional protective layer was prepared by mixing 10 parts by weight, 20 parts by weight, 30 parts by weight, and 40 parts by weight of silver-supported zeolite with 100 parts by weight of the OP agent in which the chemical absorption type deodorant was dispersed. A deodorant coating agent was applied onto the pattern layer by a bar coater, and samples having thicknesses of (1), (2), and (3) were produced. The film thicknesses (1), (2), and (3) were 2, 7 μm, 5.4 μm, and 10.8 μm, respectively. The pattern layer used had a lightness L * of 52.73.

  In Table 5, the range surrounded by the thick line is a practical range. Specifically, if the color difference ΔE * ab is 5 or less, the change in the color of the pattern layer is slight before and after coating, and what satisfies this condition can be said to be a practical range. In the film thicknesses of (1), (2), and (3), if the weight is 10 parts by weight, the color difference ΔE * ab before and after coating is in the range of 5 or less. In the case of 20 parts by weight of Zeomic, when the film thickness is (3), the color difference ΔE * ab exceeds 5, and it can be visually observed that the pattern layer after coating is clearly white compared to the previous one. I couldn't keep it. In the case of 30 parts by weight of Zeomic, the design properties could not be maintained in the cases (2) and (3) as well. With 40 parts by weight of Zeomic, the design properties could not be maintained in any of the cases (1), (2), and (3).

  Considering the deodorizing power together, in the case of (2) with 20 parts by weight of Zeomic and (1) with 30 parts by weight of Zeomic, methyl mercaptan was reduced by 6 ppm, and the best result was obtained. In addition, as a result of deviating from the bold line, the combination that could not withstand so-called practicality has deodorizing power, but the design of the pattern layer is not maintained, and the practicality is poor. Furthermore, the present inventors have found that, based on these experimental results, the condition that the color difference * ab is 5 or less is P · T ≦ 110, assuming that the added part of zeomic is P parts by weight and the film thickness of the protective layer is T μm. It was found that the relational expression of When this relational expression is satisfied, the color difference ΔE * ab is 5 or less. The range of the Zeomic mixing ratio P is 0.5 ≦ P ≦ 30.

  In addition, the deodorizing power was measured by enclosing 10 ppm of methyl mercaptan gas in a Tedlar bag containing a sample in the same manner as described above, and evaluating it according to how many ppm it was reduced after 2 hours. As a result, the deodorizing power increases as the film thickness increases and the mixing ratio increases.

  As an applicability of the present invention, a deodorizing effect can be imparted to an existing decorative board by spraying or coating the decorative board surface as a deodorizing coating agent.

It is a schematic sectional drawing of one Embodiment of the deodorizing decorative paper which concerns on this invention. It is sectional drawing of the conventional deodorizing decorative paper. It is sectional drawing of the conventional decorative board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Deodorizing decorative paper 11 Base material for paper-like wallpaper 12 Picture layer 13 Deodorant functional protective layer 14 Chemical absorption type deodorant (powder)
15 Metal supported zeolite

Claims (11)

  A deodorant coating agent comprising a synthetic resin liquid mixed with a chemical absorption deodorant as a main component, and a finely powdered metal-supported zeolite dispersed in the main component.   0.5 to 30 parts by weight of the metal-supported zeolite having an average particle size of 4 to 10 μm supporting silver ions is added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant. The deodorizing coating agent according to claim 1.   The deodorizing coating agent according to claim 1, wherein the metal-supported zeolite supports a photocatalytic titanium oxide.   A deodorizing coating agent characterized in that an acrylic resin liquid mixed with silica / alumina fine powder is used as a main agent, and a fine powdery metal-supported zeolite is dispersed in the main agent.   The deodorizing coating agent according to claim 4, wherein the metal-supported zeolite supports silver ions or photocatalytic titanium oxide.   The deodorant coating agent according to any one of claims 1 to 5, wherein the deodorant functional protective layer has a pattern layer on the pattern layer. . When coating the deodorant functional protective layer on the pattern layer, the film thickness of the deodorant functional protective layer laminated on the pattern layer and the mixing ratio of the metal-supported zeolite, the color difference before and after the coating The deodorizing decorative paper according to claim 6, wherein ΔE * ab is set to be 5 or less.   The deodorized decorative paper according to claim 7, wherein the metal-supported zeolite supports silver ions.   The deodorant decorative paper according to claim 7 or 8, wherein the lightness L * of the pattern layer before coating is 50 or more.   The number of parts of the metal-supported zeolite to be added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant is P parts by weight (0.5 ≦ P ≦ 30), and the deodorant functional protective layer The deodorant decorative paper according to any one of claims 6 to 9, wherein when the film thickness is Tm, the relational expression P · T≤110 is satisfied.   The part P parts by weight of the metal-supported zeolite to be added to 100 parts by weight of the synthetic resin liquid mixed with the chemical absorption deodorant is set in the range of 0.5 ≦ P ≦ 30, and the deodorant functional protection The deodorant decorative paper according to any one of claims 6 to 9, wherein a color difference ΔE * ab before and after the application of the pattern layer according to the film thickness Tµm is set to be 5 or less.

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