JP2005120262A - Dispersion for removing house dust - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dispersion for removing house dust, enabling the house dust to be removed effectively, and hardly having problems in use such as formation of stain; and to provide a spray and a sheet. <P>SOLUTION: The dispersion for removing the house dust contains sepiolite. The spray for removing the house dust is obtained by packing a spray container with the dispersion. The sheet for removing the house dust is obtained by impregnating a sheet material with the dispersion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dispersion, spray, and sheet for removing house dust used for removing house dust in a room.

  There are various house dusts such as dead mites, feces, pollen, dust, and fiber scraps in the room. In general, cleaning is performed using an electric vacuum cleaner or the like. For example, fine house dust entangled in a carpet, sofa, bedding, etc. cannot be sufficiently removed only by applying the electric vacuum cleaner or the like. However, it is known that various allergic diseases such as asthma are caused by allergens contained in house dust, mainly mite allergens and pollen, and therefore removal of house dust is important.

  Techniques for effectively removing allergens include, for example, a technique for treating with water-swellable clay (see Patent Document 1), a technique for treating with inorganic powders such as kaolin and talc (see Patent Document 2), and the like. ing. All of these remove and absorb allergens by the components used. Moreover, the technique etc. (refer patent documents 3-6) etc. which process with tannic acid, alcohol, and benzalkonium chloride are known, These denature and inactivate and remove allergen.

  Further, as a technique for enhancing the effect of removing house dust, for example, a powdery carpet processing composition (see Patent Document 7) containing an inorganic salt and / or organic salt carrier powder as a main component and further containing an antistatic agent, etc. Known is a powdered composition for indoor treatment in which a bactericide or bacteriostatic agent is further added to the composition (see Patent Document 8).

However, the components used in the allergen removal technique have problems in usability, such as staining of the object to be processed. In addition, none of the above technologies has been sufficient as a house dust removal effect.
JP 2000-16941 A JP 2002-167332 A Japanese Examined Patent Publication No. 2-16731 JP 2000-63207 A JP 2000-264837 A JP 2001-335474 A Japanese Patent Laid-Open No. 58-80398 JP 59-196802 A

  An object of the present invention is to provide a dispersion, a spray and a sheet for removing house dust that enable effective removal of house dust and that do not have problems in use such as generation of stains.

That is, the present invention
[1] Dispersion for removing house dust comprising sepiolite,
[2] Dispersion for removing house dust according to [1], further comprising a deodorant component,
[3] A spray for removing house dust obtained by filling the dispersion liquid according to [1] or [2] in a spray container, and [4] the dispersion liquid according to [1] or [2] as a sheet material. House dust removal sheet impregnated in
About.

  According to the dispersion for removing house dust and the like of the present invention, it is possible to agglomerate house dust and enhance its removal effect. Therefore, it is possible to effectively remove house dust by using the dispersion during cleaning. can do.

  One of the major features of the dispersion, spray and sheet for removing house dust of the present invention is that it contains sepiolite.

Sepiolite used in the present invention is a magnesium hydrous inosilicate mineral having a composition of Mg ₈ H ₂ (Si ₄ O ₁₁ ) ₃ · 3H ₂ O [Chemical Dictionary, page 369, Nagy. According to Nagy & Bradley et al., The composition is Mg ₈ Si ₁₂ O ₃₀ (OH) ₄ (OH ₂ ) ₄ · 8H ₂ O). The analysis value varies depending on the production area because it contains various impurities such as limestone, quartz, smectite, dolomite, talc, etc., SiO ₂ about 35-62 wt%, MgO about 15-30 wt%, other CaO, Al ₂ O ₃ , Fe ₂ O ₃ , Na ₂ O, K ₂ O, etc., but the sepiolite itself is a very fine fiber, and the crystal structure has a fine tunnel in which the fibrous materials are stacked alternately It is a fibrous clay mineral having

  The present invention has been completed by finding that sepiolite is surprisingly excellent in the aggregating action of house dust, unlike the components used in the conventional house dust removal technique as described above. Specifically, sepiolite has a dust aggregating action and an allergen aggregating and inactivating action. The latter action is particularly effective against mite allergens that are important as allergens. Such aggregating action of sepiolite house dust is considered to be exhibited by specific physicochemical properties based on its physical structure and chemical composition. All house dusts are presumed to be efficiently aggregated around sepiolite, but allergens are usually smaller in structure than sepiolite, so they are aggregated in a form that is incorporated into the structure of sepiolite. It is considered to be done. According to the dispersion liquid and the like of the present invention, there is an excellent effect that the house dust can be effectively removed during cleaning, but the manifestation of such an effect is the aggregation of the house dust exhibited by sepiolite. This is considered to be due to the fact that the house dust is aggregated and easily removed by the action.

  In this specification, sepiolite's “activate and inactivate allergen by aggregation (hereinafter sometimes referred to as allergen aggregation / inactivation)” refers to aggregation of allergens entangled in carpets, sofas, bedding, etc. It refers to the action of preventing the allergen from re-scattering and thereby preventing the allergen from being sucked by the human body, thereby reducing or eliminating the action of the allergen on the human body.

  When the allergen is aggregated by sepiolite, the allergen does not react with the antibody. Therefore, the allergen aggregation / inactivation action of sepiolite can be evaluated according to Test Example 1 or 2 described later. On the other hand, the dust aggregating action of sepiolite can be evaluated according to Test Example 3 described later.

  Hereinafter, the dispersion, spray and sheet for removing house dust of the present invention will be described in order.

(1) Dispersion The dispersion of the present invention can be used as it is, but is preferably used for the preparation of sprays and sheets described below.

  Sepiolite contained in the dispersion of the present invention is a fibrous clay mineral as described above. Therefore, when used for the treatment of house dust, it has not been discolored over time and has been a problem that has been a problem in the past. There is no problem of occurrence.

  Sepiolite is obtained as a light brown powder by refining it with a known beneficiation method such as crushing the raw stone and selecting the same particle size. Sepiolite is commercially available.

  The average particle diameter of sepiolite is not particularly limited, but is preferably 50 μm or less, more preferably 10 μm or less, from the viewpoint of high house dust aggregation and good dispersibility in solvents. In addition, as a minimum, it is about 0.01 micrometer normally. If the average particle diameter of sepiolite is within this range, it is preferable because the effect of removing the house dust from the dispersion is enhanced and the dispersion stability tends to be enhanced. The average particle diameter of sepiolite can be measured by, for example, a particle size distribution meter (manufactured by Beckman Coulter). The average particle diameter of sepiolite can be easily adjusted by, for example, appropriately pulverizing sepiolite or classifying it with a sieve or the like.

  Sepiolite can be used by mixing one or more types having different average particle diameters.

  The sepiolite content contained in the dispersion is not particularly limited, but preferably from the viewpoint of ensuring sufficient dispersibility of the sepiolite in the solvent and exhibiting sufficient house dust removal effect. It is 0.0001-5 weight%, More preferably, it is 0.02-1 weight%.

  The dispersion liquid of the present invention preferably further contains a deodorizing component. By containing this component, for example, the effect of removing odors derived from human sebum and sweat can also be exhibited.

  The deodorant component is not particularly limited.For example, green tea, bamboo shoot, bamboo, camellia, rose, chrysanthemum, pine, cedar, psyllium, sugar cane, mochixou and other plant extracts, rose oil, lavender oil, Bergamot oil, bitter almond oil, cananga oil, cassia oil, cedarwood oil, cinnamon oil, citronella oil, lemon oil, lime oil, nutmeg oil, peppermint oil, abies oil, pine oil, star anise oil, turpentine oil, vetiver oil, eucalyptus Plant essential oils such as oil, rosemary oil, rose oil, cypress oil, components derived from plant essential oils such as anethole, citronellal, citral, limonene, cineol, α-pinene, terpinolene, methyl methacrylate, ethyl methacrylate, lauryl methacrylate, stearyl methacrylate, Pyruvate Le, pyruvate esters, such as deodorant components such as dimethyl maleate, betaine. Plant extracts such as green tea, persimmon, bamboo, etc. are preferred because of their excellent odor removal effect.

  The content of the deodorant component in the dispersion of the present invention is not particularly limited, but is preferably 0.01 to 10% by weight, more preferably from the viewpoint of exerting a sufficient odor removal effect. 0.05 to 2% by weight.

  As the solvent used in the dispersion of the present invention, water is suitable. The water is not particularly limited, and for example, tap water, ground water, ion exchange water, ultrapure water and the like are used. The solvent occupies the remainder of each component in the dispersion. In addition to water, alcohols such as ethanol and isopropyl alcohol may be used as the solvent.

The dispersion of the present invention can be used in combination with hectorite.
It has been found that hectorite itself is particularly excellent in dust aggregation.

The hectorite is a hydrated silicate of magnesium and lithium that is in the form of a white powder and is a kind of silicate (layered silicate) having a layered structure such as smectite, vermiculite, and mica. Hydroxyl groups are present on the surface of the unit layer, and cations such as Na ⁺ , Mg ²⁺ and Ca ²⁺ and water are taken in between the layers, and are generally hydrophilic.

  The average particle diameter of hectorite is not particularly limited, but is preferably 500 nm or less, and more preferably 100 nm or less, from the viewpoint of enhancing the dust aggregating action. The lower limit is usually about 10 nm. The average particle size of hectorite can be measured in the same manner as sepiolite. The adjustment can be performed in the same manner. Hectorite can be used by mixing one or more types having different average particle diameters. If the hectorite is commercially available, it can be used. Further, the content of hectorite in the dispersion is not particularly limited, and may be appropriately adjusted as desired.

  Furthermore, in the composition of the present invention, as other components, for example, known insecticides, acaricides, repellents, fungicides, antifungal preservatives, stabilizers, fragrances, surfactants, oils, You may contain a pH adjuster etc. suitably. The content of other components is not particularly limited as long as the desired effects of the present invention are not inhibited.

  Examples of the dispersion of the present invention include 0.02 to 1% by weight of sepiolite, 0.05 to 2% by weight of deodorizing components, 0.01 to 5% by weight of other components, and 10 to 70% of ethanol. % And a dispersion containing water as the balance is particularly suitable.

  The dispersion of the present invention can be obtained by appropriately mixing the above components. Since sepiolite is generally difficult to disperse in water, it is usually preferable to prepare a dispersion by rapidly stirring in water.

(2) Spray The spray of the present invention is obtained by filling the dispersion liquid in a known spray container, and more preferably one obtained by filling the dispersion liquid of a preferred embodiment.

  Although it does not specifically limit as said spray container, From a viewpoint of the ease of use, a trigger type spray container, a pump type spray container, a pressure accumulation type spray container, etc. are used suitably. The inner volume of such a container is not particularly limited, but usually about 50 to 1000 mL is preferable.

  The dispersion liquid can be filled in the spray container according to a known method.

(3) Sheet The sheet of the present invention is obtained by impregnating the above-mentioned dispersion into a known sheet material, and a sheet obtained by impregnating a dispersion of a preferred embodiment is more preferable.

  Although the ethanol content in the particularly preferred embodiment of the dispersion is described as 10 to 70% by weight, when the dispersion is used for preparing the sheet, the ethanol content in a particularly preferred embodiment is 1 to 1%. 70% by weight.

Although it does not specifically limit as a shape of a sheet | seat, Usually, what has the magnitude | size of about 150-200 mm long, 200-300 mm wide, and thickness about 0.05-1 mm is suitable.
Such a sheet may be composed of a single layer or may be formed by laminating layers made of the same or different materials.

  The sheet material is not particularly limited, and examples thereof include a nonwoven fabric, a woven fabric, and paper. From the viewpoint of high strength, low cost, and easy adjustment of the basis weight, the nonwoven fabric is used. Is preferred. These sheet materials can be produced according to a known method. Further, if a commercially available product is available, it may be used.

  For example, the nonwoven fabric suitably used as a sheet material can be produced by a known method such as a chemical bond method, a thermal bond method, a spunlace method, a spunbond method, or a needle punch method. The material is not particularly limited, and examples thereof include polypropylene, polyethylene, polyester, acrylic, rayon, cotton, and pulp. As the material for the nonwoven fabric, rayon or pulp is preferable because it can be easily impregnated with the dispersion, and polyethylene or polyester is preferable from the viewpoint of maintaining strength. Furthermore, from both viewpoints, those obtained by blending materials exemplified as suitable materials in each of them at an appropriate ratio are more preferable.

In addition, as a fabric weight of a nonwoven fabric, ie, the fiber weight per unit area, about 30-80 g / m < ² > is usually suitable.

The impregnation of the dispersion into the sheet material can be performed according to a known method. For example, when impregnating the dispersion into a sheet material made of a non-woven fabric having a suitable basis weight, the sheet material is immersed in the dispersion about 2 to 3 times the basis weight, and the sheet material is It is preferred to impregnate the dispersion. That is, when the basis weight is 50 g / m ^2, it is preferable to impregnate 100 to 150 g of the dispersion per 1 m ^{2 of the} sheet material made of a nonwoven fabric.

  The dispersion liquid and spray of the present invention are used by, for example, being applied by spraying or the like to indoor carpets, sofas, bedding, and the like that are to be cleaned by an electric vacuum cleaner. In such a case, the house dust can be effectively removed by cleaning the object as usual with a vacuum cleaner immediately after application, preferably after being left as it is for several minutes to several hours. In addition, for example, when bedding is dried outdoors, it can be applied to the bedding. In that case, house dust can be effectively removed by tapping with a hand or a hand when taking it indoors after drying for a certain period of time. Usually, when the bedding is struck, the house dust adhering to it may be finely crushed and become more difficult to remove. However, if the dispersion liquid of the present invention is applied in advance, the house dust is agglomerated and effective. Removal is possible.

  The dispersion is preferably used as a spray because it is not easy to spread the dispersion. In addition, it is preferable to use the spray in a state where sepiolite is uniformly dispersed from the viewpoint of sufficiently exhibiting the effect of removing house dust. Therefore, it is usually preferred to use the spray well before application to the subject. Furthermore, since the target spray application portion is wet at the time of application, it is preferable to perform a cleaning or the like after a certain time after application and after sufficiently drying. In addition, when the dispersion liquid of the present invention contains a deodorizing component composed of plant extracts such as green tea, strawberries, bamboo, etc., it is possible to effectively remove house dust and the above-mentioned odor is effective. Can be removed.

  On the other hand, the sheet of the present invention is suitably used for wiping a part where house dust is accumulated, for example, the surface of bedding, the shade of an indoor lamp, a window frame, a floor, and the like. Normally, when such a portion is wiped with water, for example, it is difficult to wipe off only by getting wet with the dust, but according to the sheet of the present invention, the dust can be aggregated and effectively removed. Moreover, if the deodorizing component as described above is contained, the odor as described above can be effectively removed.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited only to this Example.

Examples 1-3 and Comparative Examples 1-4
Each component was mixed according to the mixing | blending shown in Table 1, and the test liquids 1-3 (Examples 1-3) were obtained. Moreover, each component was mixed according to the mixing | blending shown in Table 2, and the comparative test liquids 1-4 (comparative examples 1-4) were obtained.

  Sepiolite was dispersed in water by adding a small amount to water at room temperature under rapid stirring.

Test example 1
The allergen aggregation / inactivation action of Test Solution 1 and Comparative Test Solutions 1 to 4 was evaluated according to the following method using mite allergen as the allergen.

  Dfb antigen [obtained by the method of mite body crude antigen; Sasa, M. et al., Jpn. J. Exp. Med., 40: p367-382, 1970]] 20 μg / mL against PBS 0.15 mL of test solution 1 and comparative test solutions 1 to 4 were added to 1 mL of an antigen solution prepared by dissolving so as to have a concentration of. In the negative control, the same amount of water was added in place of these test solutions. After maintaining at room temperature for 2 hours, the degree of allergen inactivation by each test solution was measured by a Mighty checker (kitchen allergen detection kit: manufactured by Shinto Fine).

  According to the Mighty Checker, the amount of mite allergen Der2 (one of the main allergens) that can act as an allergen in a test solution can be measured by a horizontal development method using a monoclonal antibody. The degree of allergen inactivation is considered to represent the allergen aggregation / inactivation effect of each test solution.

  The criteria for determining the mite allergen amount by the Mighty Checker are shown in Table 3 below, and the results of determination of the degree of allergen inactivation by each test solution based on the criteria are shown in Table 4.

  From Table 4, it can be seen that the degree of allergen inactivation of test solution 1 is higher than that of comparative test solutions 1 to 4. Ingredients used in the comparative test solutions are ingredients used in conventional allergen removal techniques and ingredients known to have a soy protein aggregation effect. The results in Table 4 indicate that the degree of inactivation of the mite allergen of sepiolite used in the present invention is particularly superior to these components. Therefore, it is considered that mite allergen inactivation by sepiolite is caused by a mechanism different from inactivation by allergen adsorption or denaturation in the prior art.

Test example 2
The allergen aggregation / inactivation action of the test solution 1 was evaluated by determining the allergen inactivation rate (%) according to the following method using a cedar pollen extract as the allergen. The higher the allergen inactivation rate, the better the allergen aggregation / inactivation action.

  50 μL of cedar pollen extract (trade name: Cedar Pollen Extract-Cj, manufactured by LSL) diluted to 100 μg / mL with sodium bicarbonate buffer (0.1 M, pH 9.6) was added to each well of a 96-well microtiter plate. And kept at 4 ° C. overnight. Next, 100 μL of Test Solution 1 was added to the well to treat the allergen (25 ° C., 1 hour). The well was washed 3 times with PBS, 200 μL of blocking solution (1% BSA added PBS) was added, and the mixture was allowed to stand at 25 ° C. for 2 hours for blocking. The well was washed 3 times with 200 μL of PBST (PBS supplemented with 0.05% Tween20), and then 50 μL of peroxidase-labeled anti-Cryj-1 antibody (manufactured by HAYASHIBARA) diluted 1000-fold with PBS was added to the well and allowed to react (37 ° C. 4 hours). After the well was washed 3 times with PBST, 50 μL of a color developing solution prepared with ABTS (manufactured by SIGMA) was added to the well and reacted at 37 ° C. for 30 minutes. The absorbance of the wells was measured at a wavelength of 405 nm using a microplate reader (SPECTRAFLUOR, manufactured by TECAN).

  Note that water was used in place of test solution 1 for the blank, the positive control was obtained by reacting the peroxidase-labeled antibody and the above color former, and the negative control was the operation described above without adding the cedar pollen extract. It was assumed that

The allergen inactivation rate (%) was determined by the following formula:
Inactivation rate (%) =
100-[(absorbance when treated with test solution / absorbance of blank) × 100]

  The results are shown in Table 5.

  From Table 5, it can be seen that Test Solution 1 has a pollen allergen aggregation / inactivation effect.

Test example 3
The dust aggregating action of the test solutions 1 to 3 was evaluated by the following method.

  Put a standard dust [Cotton linter, manufactured by Japan Air Cleaners Association] 10 mg as a dust in a plastic petri dish with a diameter of 9 cm, and fill each commercially available hand spray container with 0.7 mL each of test solutions 1-3. Sprayed for aiming. After drying at room temperature, the microscope was observed with a stereomicroscope (Nikon; magnification 50 ×) to observe the degree of adsorption and aggregation of standard dust. In addition, as a control, the one in which standard dust was simply put in a plastic petri dish and the one in which water was sprayed instead of the test solution were similarly observed. The microscopic images in each case are shown in FIGS. Note that the dust aggregating action was evaluated by observing the agglomerated state of the standard dust, assuming that the control case had no dust agglomerating action.

  As shown in FIGS. 3 to 5, a strong dust agglomeration effect was observed in the test solution 1, a dust agglomeration effect was observed in the test solution 2, and a weak dust agglomeration effect was observed in the test solution 3. From this, it can be seen that the aggregating action of standard dust is improved depending on the concentration of sepiolite.

  ADVANTAGE OF THE INVENTION According to this invention, the dispersion liquid, spray, and sheet | seat for house dust removal which enable the effective removal of house dust can be provided.

FIG. 1 is a stereomicrograph (50 times magnification) of standard dust. FIG. 2 is a stereomicrograph (magnification 50 times) showing the state of standard dust when water is sprayed. FIG. 3 is a stereomicrograph (magnification 50 times) showing the state of standard dust when the test solution 1 of Example 1 (sepiolite concentration: 0.2% by weight) is sprayed. FIG. 4 is a stereomicrograph (magnification 50 times) showing the state of standard dust when the test solution 2 of Example 2 (sepiolite concentration: 0.02 wt%) is sprayed. FIG. 5 is a stereomicrograph (magnification 50 times) showing the state of standard dust when the test solution 3 of Example 3 (sepiolite concentration: 0.002 wt%) is sprayed.

Claims (4)

  Dispersion liquid for house dust removal containing sepiolite.   2. The dispersion for removing house dust according to claim 1, further comprising a deodorizing component.   A spray for removing house dust obtained by filling the dispersion liquid according to claim 1 or 2 in a spray container.   A sheet for removing house dust obtained by impregnating a sheet material with the dispersion according to claim 1.

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