JP2003105690A - Water-repellent liquid composition generating minus ion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-repellent liquid composition generating minus ion, radiating far infrared rays beneficial to the living environment, continuously emitting minus ion and usable as a wallpaper for interior use, a paper for Fusuma (sliding screen), a fired tile, etc., owing to its water-repellency, stain- proofness and dust-proofness. SOLUTION: The water-repellent liquid composition generating minus ion is produced by mixing a liquid composition exhibiting water-repellency in the state of a coating layer with fine powder of a mineral having far infrared radiating property and generating minus ion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has far-infrared radiation characteristics useful for human living environment, keeps constantly emitting negative ions, and is water-repellent and stain-proof.
The present invention relates to a negative ion generating water-repellent liquid composition which has dust resistance and can be used as a surface treatment agent for interior wallpaper, bran paper, fired tiles and the like.

[0002]

2. Description of the Related Art In order to impart antifouling properties to the surface of articles, water repellent paints (antifouling paints) made of silicone resin compounds or fluorine resin compounds are used. That is, by imparting water repellency to the surface of the article, various kinds of water-based stains are prevented from adhering and the adhered stains are easily wiped off.

On the other hand, it is widely known that a refreshing feeling and a refreshing feeling can be obtained in the vicinity of a natural waterfall or fountain where negative ions are generated. As a method of introducing such negative ions into the human living environment, there is an air cleaner that uses corona discharge or an electron beam to generate negative ions. Further, a method is also known in which tourmaline fine powder is mixed in a resin fiber filter, air is passed through this filter, and negative ions are supplied indoors.

[0004]

However, the above-mentioned two techniques are completely unrelated, and each has the following problems. The water-repellent paint has been used for many applications as a water-repellent agent for outdoor building materials, an adhesive for non-woven fabrics, a water-resistant coating agent for paper,
It is impossible to completely prevent dirt from adhering, and for example, when dark-colored dirt adheres, it can be easily found and wiped off, but colorless or light-colored dirt adheres to the droplets. In that case, it was hard to find and left without being wiped off, which sometimes gave off a strange odor. On the other hand, using corona discharge to generate negative ions,
There has been a problem that nitrogen oxides, ozone, etc., which adversely affect the human body, are simultaneously generated in the negative ions. In addition, if only fine powder such as tourmaline is mixed into the filter of resin fiber, the amount of negative ions generated is very small, so forcibly letting air pass through the filter, such as friction force and physical stress. It required equipment and structures to provide stimulation. Therefore, the present inventors aim to propose a composition capable of simultaneously solving the problems in the above two techniques.

[0005]

The present invention has been proposed in view of the above results, and a liquid composition having water repellency in the state of a coating layer has far infrared radiation characteristics,
In addition, the present invention relates to a negative ion generating water-repellent liquid composition obtained by mixing fine powder of minerals generating negative ions.

Further, the surface resistivity of the coating film of the water-repellent liquid composition, which is a peripheral substance of the fine powder of minerals which generates negative ions in the state of the coating layer, is kept within a certain range (1
It has also been found that a large amount of negative ions can be constantly released from the finely divided mineral by maintaining it at 0 ⁵ to 10 ⁸ Ωcm (having appropriate conductivity). That is, in this case,
In the case where the resin itself which constitutes the liquid composition having water repellency has an antistatic effect (very weak but electrically conductive),
There is a case where conductivity is imparted or improved by adding a conductive substance, and the use of an aqueous silicone resin or an aqueous fluorine resin corresponds to the former. Then, a mineral composition containing 99 to 1% by weight of garnet and zirconium, yttrium, silicon, or a rare earth element as a mineral having far infrared radiation characteristics and generating negative ions, is added to the liquid composition having water repellency and conductivity. By mixing 1 to 99% by weight of the exciter composed of the oxide according to the above, it has water repellency in the state of the coating layer, has far-infrared radiation characteristics, and can constantly emit negative ions. For example, it can be suitably used as a surface treatment agent for interior wallpaper, bran paper, indoor building material and the like.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. The liquid composition of the present invention may be in any form such as ink or paint as long as it can be coated to form a layer (film) and has water repellency in that state. For example, silicone resin, fluorine resin,
Acrylic copolymer resin, styrene-acrylic copolymer resin,
Acrylic-silicone copolymer resin, polyester resin, urethane resin, vinyl resin, fluoroolefin resin,
Fluorovinylden resin and the like are preferable, and particularly, an aqueous silicone resin having weak conductivity by itself, an aqueous fluorine resin, or a mixed resin composition containing them is desirable. For example, styrene-acryl as in Examples described later. An integrated liquid composition of a copolymer resin and a fluorine resin can be preferably used.

The conductive substance used to impart or improve the conductivity of the liquid composition within a certain range includes silver fine powder, copper fine powder, other conductive metal fine powder, carbon fiber fine powder. Examples thereof include powders and potassium titanate whiskers. One or two of these compositions can be used.
It is possible to select and use more than one species. The amount of the conductive material added to the liquid composition is not particularly limited because it varies depending on the types of the liquid composition and the conductive material, but the conductive material is 5 to 20 parts by weight per 100 parts by weight of the liquid composition. Parts by weight are effective.

Examples of minerals that generate negative ions include garnet, tourmaline, and the like. In addition, zirconium, yttrium,
It is possible to use a mineral composed of an oxide obtained by firing a mineral containing silicon or a rare earth element, and one or two of these may be used.
You may use it in combination of 2 or more types. Especially garnet 9
9-1% by weight and zirconium, yttrium, silicon,
Minerals consisting of oxides obtained by firing minerals containing rare earth elements 1
When used in combination with ˜99% by weight, a remarkable negative ion releasing effect is obtained, and it is considered that the latter mineral acts as an exciter that excites the negative ion generating action of the former garnet.

The amount of the above-mentioned anion-generating mineral is 1 for the water-repellent liquid composition (solid content: 25%).
It is optimal to add 1 to 30 parts by weight of mineral to 100 parts by weight. The average particle size of the fine particles of the mineral is preferably 5.0 μm or less.

When a coating layer is formed by the liquid composition having the above-mentioned constitution, the negative ion-generating mineral is a polar crystal substance which is spontaneously polarized, and positive and negative poles are spontaneously generated at both ends of the crystal so that the potential is changed. Since it is stored permanently, a weak current is constantly applied from the positive pole to the negative pole. At that time, if the surface resistivity of the surrounding material of the finely pulverized mineral is large and the conductivity is low (too low), the electrification becomes large and the current value of the weak current becomes low, so the release of negative ions is suppressed. . Further, when the surface resistivity of the peripheral substance of the finely powdered mineral is small and the conductivity is high (too high), the potential between the adjacent finely powdered minerals is neutralized and the release of negative ions is suppressed. When the resin itself constituting the liquid composition has conductivity or by adding or improving the conductivity by adding the conductive substance, the surface resistivity of the coating layer is 1
When a suitable conductivity is provided in the range of 0 ⁵ to 10 ⁸ Ωcm, a large amount of negative ions are constantly generated from the fine powder of minerals that generate negative ions added to the liquid composition. Therefore, it becomes possible to maintain the release of negative ions on the surface of the coating layer at a high level.

The present inventors have found that negative ions are generated and
We obtained important knowledge about the mechanism involved. That is,
For example, fine powder of garnet produces extremely weak electric energy
It was known that you might have, but this Gane
When water is contacted with the fine powder of ¹⁷O-NMR
(Nuclear Magnetic Resonance) The half-value width of the signal is 117.5 in raw water.
It is confirmed that it will be 78.3 Hz, which is clearly smaller than (Hz)
It has been certified. This is a group of molecules called clusters
By bringing the raw water containing it into contact with the garnet fine powder,
It means that the clusters become smaller molecular groups.
In addition, a single molecule of water is generated from this small molecular group.
Means and. In addition, by a separate experiment, garnet
When water is passed through a column packed with fine powder, pH is 6.7 to 6.9.
PH of 8.8 to 10.0 in a short time of 1 minute to several minutes
It has been confirmed. In addition, from garnet fine powder to ultrafine
Although there was a quantity of eluted ions, the alkalinization
It is not the change in pH due to the influence. From these, the water molecules are H₂O⇔H⁺+ OH^- Shows the equilibrium state of hydrogen positive ion concentration [H⁺] Is
10 in the neutral range^-7Although it is mol / L (pH 7),
The contact of water molecules with the fine garnet powder results in this
The equilibrium state is broken, and hydrogen positive ions (H⁺) Part is hydrogen
Gas (H₂) And leave the water. As a result, water
Acid group negative ion concentration [OH^-], And reformed water
Becomes alkaline. And hydroxyl anion
(OH^-) Is the surrounding water molecule (H₂O) to form a hydroxy
Sill anion (H₃O₂ ^-) Becomes accumulated in the water
And is relatively stable. In short, garnet fine powder is extremely
Has water-soluble crystalline substance and makes water cluster small in a short time
Along with exerting a reforming and purifying effect, water molecules have a negative effect.
An electrical feature that makes the water alkaline by increasing the on-state.
The new knowledge that it has the property was obtained.

Further, for example, 99 to 1% by weight of the garnet and 1 to 99% by weight of a mineral composed of an oxide obtained by firing a mineral such as zirconium, yttrium, silicon or a rare earth element.
The principle of generation of negative ions in the air when used in combination with is that the water content in the air is mixed with the mineral fine powder that excites the electrical characteristics of the garnet fine powder. by immediately becomes a water molecule air containing small clusters, eventually electrically charged hydroxyl negative ions to the negative (H ₃ O ₂ ^-), and the large amount of negative ions in the air than garnet powder alone We obtained the knowledge that it occurs.

Based on the above-mentioned findings, the present inventor applied the negative ion generating water-repellent liquid composition having the above-mentioned composition to wallpaper, bran paper, wood board, gypsum board board, cement board, fired tile,
By forming a coating layer on a metal plate, synthetic resin plate, non-woven fabric, etc., to radiate far infrared rays to the indoor space and continue to generate negative ions, so that it has water repellency, stain resistance, and dust resistance. Then, it was confirmed that it is difficult for dirt to adhere, and dirt and graffiti such as crayon and soy sauce attached can be easily removed, as well as have a deodorizing effect and an air purifying effect. It should be noted that the deodorizing effect contributes not only to the emission of negative ions but also to the emission of far infrared rays, and is considered to be a synergistic effect of both. For example, using the negative ion generating water-repellent liquid composition having the above-mentioned configuration, a wallpaper coated by screen printing or gravure printing,
When far infrared rays are emitted and the surface area of 0.3 m ² is kept stationary, more than 1500-2000 (pieces) of negative ions are continuously generated per cm ^{3 of} air, which has dust-proof and deodorant effects, and further repellency. The present invention has been completed by confirming that it has water-based property, antifouling property, and easiness of wiping.

[0015]

EXAMPLES Examples of the present invention will be described below. [Example 1] 5 wt% of fine garnet powder, zirconium, yttrium, silicon, and an oxide of a mineral-calcined substance containing a rare earth element with respect to 100 parts by weight of a styrene-acrylic copolymer resin containing a fluorocarbon resin (solid content: 25%) Exciting material 9
A negative ion-generating water-repellent liquid composition prepared by thoroughly mixing 20 parts by weight of mixed fine powder (average particle size: 5 μm) containing 5 wt% and stirring and kneading was used. By screen printing
The coating layer was formed so that the coating amount was 40 g / m ² . The surface resistivity of the coating layer is 5.8 × 10 ⁷
It was Ωcm.

Negative ion generation experiment: The amount of negative ion generation was measured by an ion measuring instrument SC-50 manufactured by Sigmatic Co., Ltd. and an ion measuring instrument IC-1000 manufactured by Universal Planning Co., Ltd. With a surface area of 0.3 m ² still, per cm ^{3 of} air (humidity 65%, temperature 22 ° C.) 1600-2
A value of 000 was obtained. The negative ion measurement data is shown in FIG.

Deodorant experiment; the wallpaper 1.8 m ² (0.1 m ×
0.3m x 60 sheets) 100L Tetra Pak with 50% humidity
Then, 100 L of air adjusted to was added and ammonia (NH ₃ ) was added to a concentration of 500 ppm. The ammonia gas concentration became 50 ppm one hour after the addition and became 10 ppm or less three hours later. In addition, nitrate nitrogen contained in the wallpaper used for the ammonia deodorization experiment was analyzed. The wallpaper was dipped in purified water and analyzed for nitrate nitrogen and ammonia nitrogen in the dipping treated water. As a result, nitrate nitrogen (NO, NO ₂ , NO ₃ )
Was confirmed to be contained. As a result, the nitrogen oxides (NO, NO ₂ , N) are generated as nitrogen oxides produced by the oxidation of ammonia in the wallpaper after the deodorization of ammonia.
It was measured that O ₃ ) was contained. Furthermore, it was confirmed that the amount of negative ions generated in the wallpaper after the deodorization experiment did not change from the amount before the experiment, and the negative ions were constantly generated.

Far-infrared radiation experiment: The far-infrared radiation characteristics of the wallpaper were measured at Tokushima Prefectural Industrial Technology Center, and it was confirmed that far-infrared radiation was emitted from the wallpaper.

Water-repellent and anti-fouling test: On the surface of the wallpaper, characters were written with a crayon or paint, and soy sauce or ketchup was adhered, but the paint or soy sauce with low viscosity was repelled by the water-repellent effect and easily It was wiped off. Crayons and highly viscous ketchup could be attached to the wallpaper surface, but could be easily wiped off even after being left for 1 to several days.

[0020]

As described above, the surface-treated base material on which the coating layer is formed using the anion-generating water-repellent liquid composition of the present invention does not easily get dirty, and stains such as crayon and soy sauce, graffiti, etc. On the other hand, it has an effect of being easily removed, and at the same time, since a large amount of negative ions are constantly maintained in a stationary state, it is possible to easily exert the deodorizing effect of ammonia odor and formaldehyde.

[Brief description of drawings]

FIG. 1 is a graph showing negative ion measurement data in an example.

Continued front page    (72) Inventor Hideo Tamanoi             6177-3 Omaezaki, Omaezaki-cho, Haibara-gun, Shizuoka Prefecture             Tan Beauty Industry Co., Ltd. Shizuoka factory (72) Inventor Ryosuke Funaki             14-1 Kirihara-cho, Fujisawa City, Kanagawa Prefecture (72) Inventor Tomozo Fujino             15-18 Kodenmacho, Nihonbashi, Chuo-ku, Tokyo             Nometal Co., Ltd. F-term (reference) 4H020 BA12 BA32                 4L055 AG15 AG18 AG63 AG69 AG71                       AG86 AG89 AG98 AH02 AH23                       AH27 AH37 AH50 AJ04 BE08                       FA19 FA20 FA30 GA22 GA23

Claims (4)

[Claims] 1. A negative ion-generating water-repellent liquid composition obtained by mixing a liquid composition having water repellency in a state of a coating layer with a fine powder of a mineral having far-infrared radiation characteristics and generating negative ions. . 2. The negative ion generating water-repellent liquid composition according to claim 1, wherein the water-repellent liquid composition has conductivity. 3. The negative ion generating water-repellent liquid composition according to claim 1, wherein the water-repellent liquid composition contains an aqueous silicone resin and / or an aqueous fluororesin. 4. A fine powder of minerals having far-infrared radiation characteristics and generating negative ions is garnet 99-1.
Exciting material 1 consisting of oxide by firing of mineral containing 1 wt% and zirconium, yttrium, silicon, rare earth element 1
The negative ion generating water-repellent liquid composition according to claim 1, which comprises 99% by weight.