JP2016075005A - Allergen-reducing wallpaper and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wallpaper efficiently achieving allergen-reducing function and a manufacturing method thereof.SOLUTION: An allergen-reducing wallpaper is manufactured by adding a water soluble allergen-reducing composition to an aqueous surface preparation agent for processing of a base material surface of a wallpaper and applying the surface preparation agent to the wallpaper base material. This processing method enables wallpaper, which efficiently achieves allergen-reducing function with a small amount of agent, to be manufactured.SELECTED DRAWING: None

Description

The present invention relates to a wallpaper obtained by processing an allergen-reducing composition, and relates to a processing method for efficiently exhibiting an allergen-reducing function.

Allergic diseases such as asthma, atopic dermatitis, and allergic rhinitis are plagued by many people, and in recent years, the tendency has been increasing. The causes of these allergic diseases are various allergens present in the environment. Among them, mites, pet animal dander, pollen, and mold that inhabit indoors are typical inhalable allergens. Well known. In particular, leopard mites, which are dust mites that live in the house, are a major problem as a source of allergens. Leopard mites are a hotbed for growing textile products in the house such as tatami mats, carpets, bedding, curtains, etc., or seat sheet fabrics of moving vehicles such as trains and cars outdoors.

Among the leopard mites, Dermatophagoides farinae and Dermatophagoides pteronysinsinus are typical species, and the dead bodies and feces of these mites are strong allergen substances. In addition, pollen of various plants including cedar ( Cryptomeria japonica ) pollen scattered in early spring is also an allergen, and causes allergic rhinitis in particular. The pollen that scatters is not only cedar pollen in the early spring, but also many kinds of cypress, mugwort, ragweed, camo, etc. There is a state that some kind of pollen is scattered throughout the year, and there is a risk of causing pollen allergies at any time It is thought that there is.

In general houses, scattered allergens such as Japanese cedar pollen easily invade indoors from the outside, and are generally installed indoors as flooring materials, flooring, tatami mats, carpets, and indoors. Leopard mites breed on textile products such as futons, sofa products, curtains, and stuffed animals, and their dung and dried carcasses tend to be allergens and scatter in the room. These pollen allergens and mite allergens cause allergic diseases such as atopic dermatitis, allergic rhinitis, bronchial asthma, etc., so allergens are reduced on wallpaper used on the wall surface that occupies a large area as an interior member of a house It is considered to be very effective to add a function to make it.

As for the wallpaper in which the allergen-reducing composition is processed, a wallpaper in which a composition having a phenolic hydroxyl group is processed (Patent Document 1), a wallpaper in which an allergen adsorbent composed of a clay mineral is fixed with a binder resin (Patent Document 2), An allergen adsorbent composed of a clay mineral and metal phosphoric acid and a processed wallpaper (Patent Document 3) have been proposed. However, these wall papers still have problems that coloring troubles are caused by being heated to a high temperature in the production process, and that the allergen reducing function is not sufficiently exhibited by being covered with a binder resin.

JP2012-211401A JP 2010-144295 A JP 2014-104228 A

It is an object of the present invention to provide a wallpaper having a high allergen reducing function by adding a small amount, and to provide a method for producing a wallpaper having a high allergen reducing function.

As a result of intensive studies in order to solve such problems, the present inventors added an allergen-reducing composition containing a water-soluble inorganic compound to an aqueous surface treatment agent, and used the surface treatment agent as wallpaper. It was found that a wallpaper that can give a high allergen-reducing function can be produced with a small amount of the allergen-reducing composition.

Specifically, the present invention is (1) an allergen-reduced wallpaper obtained by coating a surface layer of a wallpaper with an aqueous surface treatment agent to which a water-soluble allergen-reducing composition is added, and (2) a surface layer of a wallpaper. The water-based surface treatment agent for coating is an aqueous resin emulsion, the water-soluble allergen-reducing composition is a water-soluble inorganic salt compound, an allergen-reducing wallpaper, and (3) water-soluble allergen reduction. It is an allergen-reduced wallpaper whose composition is a water-soluble zirconium salt or a water-soluble rare earth salt. (4) An aqueous surface treatment agent to which a water-soluble allergen-reducing composition is added is coated on the surface layer of the wallpaper. This is a method for producing an allergen-reduced wallpaper.

According to the present invention, a wallpaper having a high allergen reducing function can be provided.

Generally, wallpaper comprises a base layer and a surface layer, and a top coat layer may be further provided on the surface layer. In the present invention, the surface treatment agent of the water-soluble emulsion is processed on the surface of such wallpaper, and the allergen-reducing composition is added to the surface treatment agent of the water-soluble emulsion. As the base material layer, a paper base made of cellulose fiber, a cloth base made of fiber cloth or non-woven fabric, or a synthetic resin sheet can be used as appropriate. Of these substrates, paper substrates are most commonly used. A flame retardant, an antifungal agent, an antibacterial processing agent, and the like can be added to the base material layer as required. Although the thickness of a base material layer does not have a restriction | limiting in particular, Usually, the thing of 60-150 g / m <2> is used.

The surface layer is a resin sheet laminated on the base material layer, and a thermoplastic resin is usually used, and a foamed vinyl chloride resin sheet is particularly used. The foamed vinyl chloride resin sheet is foamed at a heating temperature of 200 to 230 ° C. after a foaming agent is mixed into the vinyl chloride resin.

There are a calendar method and a coating method as a method of bonding the base material layer and the surface layer. In the calender method, the vinyl chloride resin of the surface layer is melted by heat, and further stretched using a roll is bonded to the base material layer. The coating method is a method of coating the base material layer through a coater adjusted to an appropriate gap as a paste state in which the vinyl chloride resin of the surface layer is kneaded, and then heating to 130 to 200 ° C. to gel. is there. Furthermore, printing may be performed as necessary to heat and foam. The kneaded vinyl chloride resin paste is usually mixed with plasticizers, fillers such as calcium carbonate, foaming agents, stabilizers, ultraviolet absorbers, flame retardants, antistatic agents, pigments, diluents, etc. as additives. The In order to produce the allergen-reduced wallpaper of the present invention, it can be applied to both the calendar method and the coating method.

The allergen-reducing composition applied to the present invention is not particularly limited as long as it has a water-soluble allergen-reducing action, and a general-purpose one can be used. Examples of such allergen-reducing compositions include inorganic salt compounds such as calcium salts, strontium salts, rare earth salts, zirconium salts, zinc salts and copper salts which are water-soluble inorganic salts. Among these, zinc salts, rare earth salts, and zirconium salts are preferable, and zirconium salts are more preferable. There are various chemical species as the zirconium salt, but any salt can be used as long as it is water-soluble, such as basic zirconyl chloride, zirconium oxychloride, zirconium tetrachloride, zirconium sulfate, basic zirconium sulfate, zirconyl acetate, Examples thereof include potassium zirconium carbonate, sodium zirconium carbonate, and zirconium carbonate. It is also possible to use a zirconium complex with a water-soluble organic ligand. Examples of such a complex include a complex of zirconium with an organic acid or an amino acid, such as Olgatics manufactured by Matsumoto Fine Chemical Co., Ltd. Can be illustrated.

These water-soluble allergen-reducing compositions are usually used in liquid or solid form. When it is liquid, it can be used as a solution in which the allergen-reducing composition is dissolved in water or a polar solvent. When it is solid, it can be used in the form of powder or granules. Two or more of these allergen-reducing compositions may be used in combination.

The allergens targeted by the allergen-reducing composition of the present invention include the allergen (Der p1) derived from the feces of Dermatophagoides pteronyssinus , the allergen derived from the worm body (Der p2), and the Dermatophagoid mite ( Dermatophagoid mite ). Examples include allergen (Der f1) and worm-derived allergen (Der f2). Moreover, as an allergen derived from a plant, allergens such as cypress, ragweed, mugwort, camogaya, and hurghaya are mentioned, starting with the allergen (Cry j1) derived from pollen of cedar ( Cryptomeria japonica ). In addition, allergens derived from dog hair and dandruff (Can f1, Can f2), feline hair and dandruff allergens (Fel d1), cockroach-derived allergens (Brag 1, Bra g 2), fungi allergens ( Alt a1), natural rubber latex-derived allergen and the like. Among these, allergens derived from ticks and allergens derived from cedar pollen are regarded as important as allergens that particularly require reduction. By using the allergen-reduced wallpaper of the present invention, the various allergens listed above can be reduced, and various allergens can be substantially eliminated.

With respect to the concentration of the allergen-reducing composition used in the allergen-reduced wallpaper of the present invention to the aqueous surface treatment agent, it can be used in the range of 0.1 to 20%, preferably 0. It can be added and used in the range of 5 to 10%, more preferably 1 to 5%.

What is generally marketed as an industrial product can be used for an aqueous surface treating agent. Such a surface treatment agent is not particularly limited, and examples thereof include various modified starches such as starch and enzyme-modified starch, water-soluble polymers such as polyvinyl alcohol, polyacrylamide and carboxymethylcellulose, and acrylic resin emulsions. And aqueous resin emulsions such as vinyl acetate resin emulsions, acrylic-styrene resin emulsions, acrylic-vinyl acetate resin emulsions, vinyl chloride resin emulsions, vinyl chloride-acrylic resin emulsions, and urethane resin emulsions. For the allergen-reduced wallpaper of the present invention, it is preferable to use an aqueous resin emulsion that can be expected to have water resistance of the cured film, rather than using a water-soluble polymer. “Aqueous” means that the polymer contained in the surface treatment agent is soluble in water, or that the water-insoluble polymer is dispersed in water or a polar solvent in the form of a resin emulsion. Such an aqueous surface treatment agent can be macroscopically and uniformly mixed with water at an arbitrary ratio.

For example, as an acrylic resin emulsion, Boncoat (registered trademark, manufactured by DIC Corporation), a vinyl chloride resin emulsion, and as a copolymer resin emulsion of vinyl chloride, acrylic acid ester, vinyl acetate, etc., VINIBRAN (registered trademark, Nissin) Examples of the urethane emulsion include Superflex (registered trademark, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Adekabon Titer (registered trademark) HUX (manufactured by ADEKA Corporation), and the like.

As the liquidity of these water-soluble polymers or aqueous resin emulsions, a pH of 5 or more is suitable, and particularly with respect to an aqueous resin emulsion, the pH is preferably 7 or more, more preferably pH 8 or more. Can be used.

The allergen-reduced wallpaper of the present invention is obtained by further coating a surface treatment agent having the allergen-reducing composition added to the surface layer of the wallpaper produced by the above method. After coating the surface treatment agent on the surface layer of the wallpaper, it is dried and cured as a film. Although drying may be performed at room temperature, it is usually heat-dried in a temperature range of 100 to 200 ° C. Moreover, you may heat in the same process as the gelatinization by the heating of the surface layer of wallpaper.

The amount of the water-soluble polymer or aqueous resin emulsion applied to the wallpaper is not particularly limited as long as a cured film having a uniform thickness can be formed, but usually 0.2 to 30 g / m 2. Can be applied in a range.

The method of applying the surface treatment agent to which the allergen-reducing composition is added to the surface layer of the wallpaper is not particularly limited, but it can be usually applied by a method such as gravure roll processing, spray processing, roll coater processing, etc. it can.

The present invention will be described in more detail with reference to examples and test examples, but the present invention is not limited thereto. In addition, all% shown below are weight%.

Preparation of PVC wallpaper A As a surface layer of PVC wallpaper, 100 g of polyvinyl chloride with an average polymerization degree of 700 (PQB83, Shin-Daiichi PVC Co., Ltd.), 50 g of plasticizer diisononyl phthalate (DINP, manufactured by Taoka Chemical Co., Ltd.), as a stabilizer 3 g of ADK STAB (registered trademark) FL100 (manufactured by ADEKA Corporation) and 7 g of isoparaffin (IP solvent 2028, manufactured by Idemitsu Kosan Co., Ltd.) were mixed using a stirrer. The prepared surface layer liquid was applied to an A4 size PPC paper as a base material layer so as to be about 200 g / m 2, and heated at 150 ° C. for 1 minute to obtain a PVC wallpaper A.

Preparation of PVC Wallpaper B As a surface layer of PVC wallpaper, 100 g of polyvinyl chloride powder having an average polymerization degree of 700 (PQB83, Shin-Daiichi PVC Co., Ltd.), plasticizer diisononyl phthalate (DINP, manufactured by Taoka Chemical Co., Ltd.) 50 g, calcium carbonate ( 50 g of Wako Pure Chemical Industries, Ltd., 3 g of ADK STAB (registered trademark) FL100 (manufactured by ADEKA) and 7 g of isoparaffin (IP Solvent 2028, manufactured by Idemitsu Kosan Co., Ltd.) were mixed as a stabilizer. The prepared surface layer solution was applied to an A4 size PPC paper as a base material layer so as to be about 200 g / m 2, and heated at 150 ° C. for 1 minute to obtain a PVC wallpaper B.

Example 1
Urethane resin emulsion (Superflex E300, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) is used as the surface treatment agent, and potassium carbonate (Zirmel (registered trademark) 1000, manufactured by Nippon Light Metal Co., Ltd.) is used as the allergen-reducing composition. 5% was added and mixed uniformly. This surface treatment agent was applied to the polyvinyl chloride wallpaper A so as to be 10 g / m 2 and dried at room temperature to obtain an allergen-reduced wallpaper.

Example 2
An allergen-reduced wallpaper was obtained in the same manner as in Example 1 except that zirconium chloride octahydrate (Wako Pure Chemical Industries, Ltd.) was used as the allergen-reducing composition.

Example 3
An allergen-reduced wallpaper was obtained in the same manner as in Example 1 except that an acrylic resin emulsion (Viniblanc HD-065, manufactured by Nissin Chemical Industry Co., Ltd.) was used as the surface treating agent.

Example 4
Example except that lanthanum chloride heptahydrate (manufactured by Wako Pure Chemical Industries, Ltd.) was used as the allergen reducing agent, and an acrylic resin emulsion (Vinibrand HD-065, manufactured by Nissin Chemical Industry Co., Ltd.) was used as the surface treating agent. The same operation as in No. 1 was performed to obtain an allergen-reduced wallpaper.

Example 5
Acrylic resin emulsion (Vinibran HD-065, manufactured by Nissin Chemical Industry Co., Ltd.) is used as the surface treatment agent, and potassium zirconium carbonate (Zirmel (registered trademark) 1000, manufactured by Nippon Light Metal Co., Ltd.) is used as the allergen-reducing composition. 5% was added and mixed uniformly. This surface treatment agent was applied to the polyvinyl chloride wallpaper B so as to be 10 g / m 2 and dried at room temperature to obtain an allergen-reduced wallpaper.

Comparative Example 1
An allergen-reduced wallpaper was obtained in the same manner as in Example 1 except that a 20% dispersion of photocatalytic titanium oxide (ST-01, manufactured by Ishihara Sangyo Co., Ltd.) was used as the allergen-reducing composition.

Comparative Example 2
In the preparation of PVC wallpaper A, 1% potassium carbonate added to the surface layer solution was applied to the A4 size PPC paper as a base layer so as to be about 200 g / m2, and heated at 150 ° C. for 1 minute. Got allergen reduced wallpaper.

Comparative Example 3
In the preparation of PVC wallpaper A, 1% of zirconium chloride octahydrate added to the surface layer solution was applied as a base layer to A4 size PPC paper at about 200 g / m2, and at 150 ° C. Heated for 1 minute to obtain an allergen-reduced wallpaper.

(Evaluation of allergen-reduced wallpaper)
The samples of Examples 1 to 5 and Comparative Examples 1 to 3 were cut into a circle having a diameter of 8 cm, and the edge portion of the wallpaper sample was bent about 5 mm so that the processed surface of the allergen-reducing composition was concave. To this, 1 mL of mite allergen aqueous solution (Der f2 concentration 900 ng / mL) is spread, and the processed surface is aligned with the same sample in which the edge portion of about 5 mm is bent so that the processed surface of the allergen-reducing composition is convex from above. I pinched it like that. In order to prevent volatilization of the allergen aqueous solution, it was put in a plastic bag with a chuck and stored at room temperature for 1 hour. 100 μL of the allergen aqueous solution was collected using a Pipetman, and the allergen concentration was measured by sandwich ELISA. The results are shown in Table 1.

According to the present invention, a wallpaper having a high allergen reducing function can be provided, and the wallpaper can be widely used as a building interior material.

Claims (4)

An allergen-reduced wallpaper characterized in that an aqueous surface treatment agent to which a water-soluble allergen-reducing composition is added is coated on the surface layer of the wallpaper.
2. The allergen according to claim 1, wherein the aqueous surface treatment agent for coating the surface layer of the wallpaper is an aqueous resin emulsion, and the water-soluble allergen-reducing composition is a water-soluble inorganic salt compound. Reduced wallpaper.
3. The allergen-reduced wallpaper according to claim 1, wherein the water-soluble allergen-reducing composition is a water-soluble zirconium salt or a water-soluble rare earth salt.
The method for producing an allergen-reduced wallpaper according to any one of claims 1 to 3, wherein the surface layer of the wallpaper is coated with an aqueous surface treatment agent to which the water-soluble allergen-reducing composition is added. .