JPH09204807A - Lighting accessories with deodorant function - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a lighting accessory such as a shade, a hood, and a reflector, which has a deodorant function with long-lasting or long-lasting and fast-acting properties. A titanium oxide photocatalyst coated with a porous inorganic material, or a deodorant obtained by coating the catalyst and a deodorant, or a mixture of the titanium oxide photocatalyst and a deodorant with a porous inorganic material is included or coated. I will do it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting accessory such as a shade, a hood, and a reflector for a lighting fixture having a deodorizing function, and more specifically, a deodorant containing a titanium oxide photocatalyst for a long-lasting property. Or, it relates to a lighting accessory having a deodorant function with excellent fast-acting and long-lasting properties.

[0002]

2. Description of the Related Art In recent years, interest in odors and scents has been increasing, and odors (bad odors, hereinafter the same) that are physically adsorbable substances such as activated carbon and porous active substances have been odorless due to chemical reactions. It has been dealt with by using a chemical deodorant substance that reduces or reduces the odor, or by masking an odor substance with a fragrance spray or a fragrance gel. However, all of these could only be expected to have a short-term deodorizing effect.

On the other hand, as a long-term deodorant / deodorant,
Recently, catalytic deodorants / deodorants and artificial enzymes have been developed, but the reality is that the processing method and usage form are limited.

Furthermore, a titanium oxide photocatalyst in the form of fine particles, which has a strong catalytic action, has been in the limelight, but its catalytic action is so strong that when it is mixed with an organic substance, decomposition or coloring of the organic substance occurs, so that it is usually 0. 001 to 0.1% by weight, at most 1.
Only 0% by weight can be compounded. Therefore, the catalytic action and the deodorizing effect are naturally limited.

[0005]

In view of the above situation, the present invention maintains the deodorizing function for a long period of time, is excellent in quick-acting property, and does not decompose or deteriorate the organic substance to be blended. The present invention provides a lighting accessory such as a shade, a hood, and a reflector having a deodorizing function.

[0006]

The first aspect of the present invention is as follows.
A lighting accessory having a deodorant function, which uses a titanium oxide photocatalyst coated with a porous inorganic material, and a second aspect of the present invention, which uses a titanium oxide photocatalyst coated with a porous inorganic material, and a deodorant, A lighting accessory having a deodorizing function, and a third aspect of the present invention is a lighting accessory having a deodorizing function, which uses a deodorant obtained by coating a mixture of a titanium oxide photocatalyst and a deodorant with a porous inorganic material, The content of each.

The titanium oxide photocatalyst used in the present invention is made of ultrafine particles of titanium oxide having a particle size of about 4 to 8 nm, and has increased reactivity by increasing the surface area per unit weight. Strong deodorant effect in the presence of water,
It has antibacterial and bactericidal effects. Examples of commercially available products include "Taipeque ST series" (manufactured by Ishihara Sangyo Co., Ltd.). Further, the titanium oxide photocatalyst may be loaded with a metal such as gold, platinum, palladium, copper, nickel oxide, or a metal oxide to promote the photocatalytic function.

The porous inorganic material in the present invention is required to have a titanium oxide photocatalyst alone or together with a deodorant for protective coating, and to have a strength so as not to be destroyed by an external force during compounding with an organic substance. Examples of such a porous inorganic material include silica, alumina, silica-alumina, zinc oxide and the like. These may be used alone or in combination of two or more.

The pore diameter of the protective coating layer made of a porous inorganic material is preferably about 5.0 to 1000Å, particularly 10
About 0 to 300Å is suitable. If the pore size is too large, the organic substance will come into contact with the titanium oxide photocatalyst to be decomposed, causing an offensive odor and coloring. Conversely, if the pore size is below the molecular size of the odorant, the odorant will reach the titanium oxide photocatalyst. In addition, the catalyst does not decompose the odorous substance and does not exert a sufficient deodorizing effect.

The deodorant used in the present invention includes a porous active substance that deodorizes by physical adsorption and an oxidizing / reducing substance / catalytic substance that deodorizes an odorous substance by a chemical reaction. Examples of the former include activated clay, acid clay, natural zeolite, synthetic zeolite (hydrophilic / hydrophobic), bentonite, sepiolite, silica, silica-magnesia, silica-ZnO and the like, and examples of the latter include platinum-based materials. Inorganic substances such as iron-manganese-based, titanium-based, and silica-alumina-based substances, as well as organic natural enzymes and artificial enzymes are listed.

The deodorant used in the present invention is preferably colorless or white and non-toxic, and the particle size of the porous active substance which is an adsorption type deodorant is preferably in the range of 0.1 to 10 μm. These are used alone or in combination of two or more,
A physical deodorant that is an adsorption-type deodorant and an oxidizing / reducing substance
It is also possible to use the catalyst substance together with a chemical deodorant.

The deodorant is mixed with a titanium oxide photocatalyst and protectively coated with a porous inorganic substance to be blended with the resin, or in combination with a titanium oxide photocatalyst protectively coated with a porous inorganic substance (hereinafter referred to as post addition). ) Used in combination with organic substances. The deodorant has a fast-acting effect and quickly deodorizes a high-concentration odor substance, but it is not sustainable because of its limited effect.

When the titanium oxide photocatalyst and the deodorant are used in combination as described above, the titanium oxide photocatalyst eliminates the odor (bad odor) substance for a long period of time by the sunlight or the light of the fluorescent lamp to eliminate the odor. For example, it also decomposes odorous substances (odorous substances) adsorbed by a deodorant in the vicinity, and as a result, the deodorizing ability of the deodorant is restored, and it has a long-lasting and long-acting effect. Will be combined.

Further, some deodorants have a catalytic function, and when such a deodorant is directly contacted with an organic substance, decomposition odor is generated or coloring occurs and it cannot be added later. As mentioned above, it is preferable to perform protective coating with a porous inorganic material together with the titanium oxide photocatalyst.

Porous inorganic coated titanium oxide photocatalyst, titanium oxide photocatalyst coated with the porous inorganic material and a deodorant, or a mixture of titanium oxide photocatalyst and a deodorant coated with a porous inorganic deodorant There are roughly two methods for obtaining shades, hoods, reflectors, etc. for lighting equipment having a deodorizing function by using the agent (the above three types are collectively referred to as a composite deodorant).

[0016] The first is compounding a composite deodorant with a synthetic resin.
It is a method of obtaining the object of the present invention by kneading and then molding by various processing methods described later. The second method is a method of obtaining the object of the present invention by mixing a composite deodorant with a binder resin, a printing ink, a paint, a spray liquid or the like, followed by coating, impregnation, printing and spraying.

The synthetic resin used for compounding and kneading the composite deodorant may be a thermoplastic resin or a thermosetting resin, but it can pass an odor (bad odor) substance requiring deodorization and exhibits a photocatalytic function. It is preferable to select a resin capable of transmitting oxygen gas and light (especially ultraviolet rays) necessary for the above. Examples of the synthetic resin include low-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene-methacrylic acid copolymer, ethylene-vinyl acetate copolymer, olefin resin such as polypropylene and its copolymer, styrene. Resin, polycarbonate resin, acrylic resin,
Examples thereof include vinyl chloride resin, urethane resin, and silicone resin. These may be used alone or in combination of two or more.

These resins are capable of transmitting odorous substances which require deodorization and deodorization, and also oxygen and light which are necessary for manifesting the catalytic function of the titanium oxide photocatalyst to be blended, so that the present invention can be used. The photocatalyst and deodorant used will act on and from the inside of the molded product. The water necessary for the oxidation reaction of the titanium oxide photocatalyst is also supplied from the porous inorganic material.

Further, an organic acid-based or flavonoid-based organic deodorant may be added by post-addition to the synthetic resin composition prepared by mixing and kneading the composite deodorant of the present invention. It is necessary to consider the processing method because there is a problem. Further, depending on the purpose, an antistatic agent, a plasticizer, a colorant, an antibacterial agent, an antifouling agent, etc. may be used alone or in combination of two or more kinds.

The compounding amount of the composite deodorant is preferably 0.5 to 30 parts by weight with respect to 100 parts by weight of the resin. If it is less than 0.5 part by weight, a sufficient deodorizing effect is difficult to be obtained, and if it exceeds 30 parts by weight, workability and the like tend to be inconvenient.
The method of molding a deodorant composition obtained by mixing and kneading a composite deodorant with the above-mentioned synthetic resin to obtain a shade, a hood, a reflector for a deodorant device, etc. is such that the porous inorganic coating is not destroyed by external force. A known method can be adopted depending on the level.

Of the above-mentioned resins, thermoplastic resins are known and mixed and kneaded by a melt-kneading method, and press processing, inflation processing, injection processing, extrusion laminating processing, hot melt coating processing, fiber spinning processing, non-woven fabric processing and the like are known. It is molded into a desired shape by a molding method. When the resin is a thermosetting resin and the state before molding is a liquid such as a monomer or an oligomer, or when the resin is an emulsion or a dispersion solution,
It is only necessary to mix and mix the complex deodorant before curing by polymerization, crosslinking, heating, drying, etc., known coating such as roll coating, spray coating, dipping, gravure printing, screen printing, flexo printing, coating, Printing method can be applied. The molded product or fiber-processed product thus obtained is used as it is, or is further secondary processed to be a shade, a hood, a reflection plate or the like for a lighting fixture having a deodorizing function.

On the other hand, when a deodorant composition containing a composite deodorant for coating, impregnation, printing, spraying or the like is used, the composite deodorant is used as the object to be coated (hereinafter referred to as "coating"). The term "includes not only" coating "but also" impregnation "," printing "," spray ", etc.). A binder resin is used. For example, urethane resin, silicone resin, acrylic resin, vinyl acetate resin, starch,
Examples include carboxymethyl cellulose and polyvinylpyrrolidone. These may be used alone or in combination of two or more.

The concentration of the composite deodorant in the coating liquid or the like is 2 to
About 10% by weight is suitable. If the concentration is too low, the deodorizing effect is not sufficient, and if it is too high, coating becomes difficult.

The article to be coated may be a molded product or processed product having the above-mentioned deodorizing function, and does not have the deodorizing function.
It may be a general molded product, a processed fiber product, a processed paper product, a processed wood product, or the like. By using the above deodorant coating composition for these objects to be coated, a desired shape, color,
You can obtain shades, hoods, and reflectors for patterned lighting fixtures.

It should be noted that regardless of whether the composite deodorant is blended and kneaded, a synthetic resin molded product, a fiber processed product, or a coated product coated with a composition containing a composite deodorant, the surface of these products is used for the purpose of the final product. Depending on the situation, it is possible to apply a print / design or an uneven pattern by pre-processing or post-processing. The concavo-convex pattern can be expected to have the effect of increasing the scattering and transmission of light by increasing the surface area and also increasing the contact area of odorous substances, thereby increasing the photocatalytic action and deodorizing function.

[0026]

EXAMPLES The present invention is described in more detail below by showing Examples, but the present invention is not limited thereto.

Example 1 Ultrafine particle titanium oxide "Taipaque ST-31" (particle size = 7) surface-treated with zinc oxide as a titanium oxide photocatalyst.
nm, Ishihara Sangyo Co., Ltd.) 3% by weight and low-density polyethylene "Mirason 403P" (MI = 7.0 g / 10 minutes,
Density = 0.920 g / cm ³ , Mitsui Petrochemical Industry Co., Ltd.) 75% by weight, calcium carbonate "Whiten SB
(Red) "(manufactured by Shiraishi Calcium Co., Ltd.) 14% by weight, titanium oxide" Taipaque SR-60-2 "(manufactured by Ishihara Sangyo Co., Ltd.) 3% by weight, modified polyolefin resin" Admer QE-050 "(Mitsui Petrochemical Co., Ltd.) (Manufactured by Kogyo Co., Ltd.) and 5% by weight are dry-blended and deaerated and kneaded by a conventional method
A deodorant composition was obtained. Using this deodorant composition, injection molding was carried out at a cylinder temperature of 230 ° C., an injection pressure of 800 kg / cm ² , and a mold temperature of 40 ° C., and a round bowl shape of a household ring type fluorescent lamp (diameter 40 cm, central part hollow 12 cm). , Pale milky white)
A shade having a deodorizing function was produced. This product not only deodorizes and removes complex odors such as tobacco odors in the room, but also has a continuous deodorizing effect and oil burning, etc. due to the adsorption capacity and photocatalytic action of "Taipeque ST-31". It was also found that the stains due to were easily wiped off, and this effect was also observed after 3 months.

Example 2 10 parts by weight of "Taipaque ST-31" used in Example 1 and water-soluble acrylic resin sol "S-753" (solid content: 50% by weight, viscosity: 1200 cp, Dainippon Ink Co., Ltd.) (Manufactured by Kagaku Kogyo Co., Ltd.) to obtain 90 parts by weight of a spray stock solution. Using this undiluted solution and LPG as the atomizing gas, the deodorant spray of a 500 ml can [liquid:
Gas = 1: 1 (weight ratio)] was obtained. Nozzle diameter is 0.4 mm
Was used. Using the obtained deodorant spray, spray 20 g of the spray liquid so that the deodorant uniformly adheres to the inner surface of the pleated / dark red acrylic fabric lamp shade for a desk lamp (fluorescent lamp), A lamp shade having a deodorizing function was obtained. When the desk lamp equipped with this product was used for 6 hours / day, the offensive odor in the room disappeared from the 3rd day, and the effect was still persistent even after 6 months.

Example 3 "Taipaque ST-01" as a titanium oxide photocatalyst
(Particle size = 7 nm, manufactured by Ishihara Sangyo Co., Ltd.), and 2 parts by weight of porous silica coated with “Snowtex (manufactured by Nissan Chemical Co., Ltd.)” as silica sol, and hydrophobic zeolite “deodorant” Absent # 2
2 parts by weight of "000" (manufactured by Union Showa Co., Ltd.) and 18 parts by weight of water to form a slurry, and an acrylic emulsion "Cypinol EK-1005 (solid content = 39% by weight, manufactured by Saiden Chemical Co., Ltd.)" A deodorant binder was obtained by adding 90 parts by weight to form a uniform emulsion.On the other hand, a ceiling-mounted fluorescent lamp holder (two office fluorescent lamps with a length of 120 cm) were installed.
A reflective plate coated with a silver-white paint for ² in the above-mentioned two fluorescent lamp holders was obtained by a conventional method. The deodorant binder was coated on the surface of this reflecting plate so as to be ² g / m ² as a deodorant to obtain a reflecting plate having a deodorizing function. When this reflector is used, a reduction in indoor odor is observed after 2 days, and this deodorant effect is still persistent even after 2 months, and since stains due to organic substances are photodecomposed, It was found that dirt could be easily wiped off.

Example 4 1.5 parts by weight of "Taipaque ST-01" as a titanium oxide photocatalyst, 1.5 parts by weight of hydrophobic zeolite "Absent # 3000" as a deodorant, and "Absent #
To 1,000 parts by weight of 1000 ", 4.8 parts by weight of" Snowtex "as silica sol (as silica) was added, stirred and reacted to obtain a composite deodorant coated with porous silica. . 5% by weight of this composite deodorant, 20% by weight of calcium carbonate "Ryton BS-O" (handled by Shiraishi Calcium Co., Ltd.), 5% by weight of modified polyolefin resin "Admer QE-050", polypropylene resin "J"
-700 "(MI = 11 g / 10 minutes, manufactured by Mitsui Petrochemical Co., Ltd.) 70% by weight was dry blended and deaerated and kneaded by a conventional method to obtain a deodorant composition. Using the deodorant composition obtained as described above, a cylinder temperature of 26
Injection molding at 0 ° C, injection pressure 900 kg / cm ² , mold temperature 40 ° C, length 50 cm, height 10 cm, width: upper 10 cm (with rim), lower 8 cm for linear fluorescent lamp for bathroom, A hood having a deodorizing function was produced. By using this product, the so-called scale odor in the bathroom can be deodorized and removed, and due to the effect of the photocatalyst, the deodorant function can be maintained, the hood itself can be easily cleaned, and it can also have a bactericidal action. confirmed.

[0031]

[Effect of the Invention] A shade / hood having the deodorizing function of the present invention
Lighting accessories such as reflectors have a titanium oxide photocatalyst coated with a porous inorganic substance, so they do not deteriorate synthetic resin and have a long-lasting deodorizing effect and oil burning etc. Since the organic substances are also decomposed in the presence of light, it also has the effect of easily wiping off stains due to these. In addition, by using a deodorant together, it also has a quick deodorant effect.

Front Page Continuation (72) Inventor Hiiragi Ohara 4-13-18 Andachi, Suminoe-ku, Osaka City, Osaka Prefecture Goyo Paper Works Co., Ltd.

Claims (3)

[Claims] 1. A lighting accessory having a deodorizing function, which uses a titanium oxide photocatalyst coated with a porous inorganic material. 2. A lighting accessory having a deodorizing function, which uses a titanium oxide photocatalyst coated with a porous inorganic material and a deodorant. 3. A lighting accessory having a deodorizing function, which uses a deodorant obtained by coating a mixture of a titanium oxide photocatalyst and a deodorant with a porous inorganic material.