JP3531927B2 - Humidifier and method of using the humectant, and termite control agent and method of using the termite control agent - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidity-controlling agent having an anti-termite action and its use method, and a termite-controlling agent having a humidity-controlling action and its use method.

[0002]

2. Description of the Related Art Termite damage in buildings has been a serious problem for a long time. It is well known that termites generally prefer to eat moist wood, but in addition to wood, not only cloth and paper, but also concrete, soil, rubber, certain plastics materials, etc. can be eaten or drafted. It has been known to be an extremely omnivorous pest. Such termite damage is becoming more serious all over the world, both in Japan and abroad, and in both wet and dry climates. As a measure against termites, a method of spraying or applying synthetic chemical agents or natural agents has been used so far, such as underfloor, basic concrete and soil around it, where termites are likely to form nests. In such a method, there is a problem that the extermination effect against termites does not last long due to the volatility of each of the above-mentioned drugs, and it is necessary to treat the drug many times after a predetermined period of time, which is troublesome and costly. Also, some of the drugs may contain organic compounds that are harmful to the human body, pets, livestock, etc. and require careful use, and such synthetic drugs may remain in the soil. Further, the active ingredient may volatilize and diffuse into the room, which becomes an obstacle to the sick house.

On the other hand, a moist environment under the floor not only causes the growth of mold and other bacteria and the corrosion of wood, but also the growth of termites that feed on mold and wood. Therefore, a method of spraying a humidity control agent under the floor so as to maintain the humidity under the floor to be appropriately dried and substantially constant is also adopted.

[0004]

By the way, it is said that pests such as termites and mites and various bacteria such as molds are difficult to propagate in a building using wood represented by Aomori Hiba and Taiwan Hinoki. It has been found that the hinokitiol component contained in such wood has an insect-repellent / antibacterial effect. Therefore, various methods have been considered for obtaining an antitermite effect by directly spraying or applying the essential oil of hinokitiol or a liquid agent obtained by diluting the essential oil on the floor or foundation of a building. However, in such a method, once the treatment such as spraying the liquid agent is performed, the initial effect is diminished when the hinokitiol component is volatilized, and there is a problem that the treatment must be repeated many times. is there. Further, the liquid agent generally needs to be stored and transported in a tank or the like, which is inconvenient to handle.

Under these circumstances, hinokitiol, which does not harm human bodies, animals and the environment, is effectively used,
Moreover, a termite control agent capable of continuously exerting the termite repellent effect of hinokitiol over a long period of time is desired.

On the other hand, as the humidity control agent, porous particles such as powder of activated carbon, silica gel, natural ore and the like are used.
These exhibit a humidity control function by adsorbing moisture to the pores opening on the surface or releasing moisture from the pores. However, it is difficult to obtain a sufficient termite control effect only by the humidity control effect of the humidity control agent sprayed under the floor.

That is, in order to properly control the humidity under the floor and the ant control, the ant control effect is maintained for a long period without adversely affecting the surrounding environment, the occupants and the construction workers. It is thought that it is desirable to take the active anti-termite measures and the under-floor humidity control measures at the same time, but at present, only one of them is taken, and it is said that sufficient effects are obtained. Is hard to say.

In view of the above problems, the present invention provides a humidity control agent having an effective termite control action and a method for using the same, and a termite control agent having an effective humidity control action and a method for using the termite control agent. It is intended to be provided.

[0009]

Means for Solving the Problems That is, the humidity control agent of the present invention comprises mineral particles having a humidity control effect, and porous ceramic particles obtained by holding a liquid or hiba oil containing hinokitiol in the pores. the mixture Ri Do not mainly, before the
The mineral particles are mainly composed of silicon dioxide and calcium borate.
The above-mentioned porous ceramic, which contains an um component.
The particles are the outer shell formed by these aggregates and the
Hinokichio enclosed in an inner space surrounded by an outer shell
With a liquid or hiba oil containing
It is characterized in der Rukoto what constitutes a microcapsule capable of sustained release of the.

Therefore, if this humidity control agent is sprayed under the floor or in the soil around the building, the growth of mold and the like is prevented by keeping the humidity under the floor almost constant by the mineral particles having a humidity control action. Along with being able to create an environment that is not easily damaged by termites, the action of hinokitiol contained in the liquid and hiba oil contained in the porous ceramic particles releases more thorough anti-termite measures. And you will be able to actively do it.

More specifically, it is known that ceramic particles are generally porous, and the pores thereof have the property of adsorbing various substances regardless of whether they are water-soluble substances or oil-soluble substances. is doing. Focusing on the action of such a ceramic as a carrier, by holding a liquid containing hinokitiol in the pores, the adsorbed hinokitiol gradually volatilizes from the pores, and especially the termite repellent effect is obtained. It can be obtained over a long period of time. Here, as the hinokitiol, a liquid agent extracted from wood such as Aomori Hiba or Taiwan Hinoki, or a chemically synthesized solution of hinokitiol can be applied. Further, in order to obtain the effect of hinokitiol more easily, it is possible to hold the hiba oil in the pores of the ceramic particles. In this way, since a large amount of hinokitiol is contained in the hiba oil, the above-mentioned effects such as antibacterial effect, fungicide, and insect repellent by the hinokitiol can be obtained, and the hinokitiol extraction step from the hiba oil is eliminated. Therefore, the cost and time required for producing the ceramic particles can be reduced.

Ores suitable for use in such a humidity control agent are generally those containing silicon dioxide as a main component, but in the case of ores containing a calcium borate component, porous ceramic particles are generally used. Combined with the action of hinokitiol released from the plant, the termite-preventing effect can be further improved. Examples of calcium borate-containing minerals include colemanite, which is an ore calculated naturally. Colemanite contains a relatively large amount of calcium borate as a hydrate and exerts termite-killing action by the action of calcium borate dissolved by alcohols secreted by termites outside the body, so it is also used as an anti-termite agent. Suitable for That is, even after releasing all the hinokitiol retained by the porous ceramic particles,
Since calcium borate having an anti-termite effect remains in the colemanite, it can be expected to have a high termite control effect for an extremely long term. On the other hand, since the porous ceramic particles that have finished releasing hinokitiol also function as a suitable humidity control agent, the humidity control effect as a whole does not decrease. However, considering the concentration of calcium borate remaining in the soil and safety aspects, the calcium borate component is
It is preferable to contain it in the range of 1 mg / l or less.

[0013]

On the other hand, the porous ceramic particles are in a state where a liquid containing hinokitiol or hiba oil is adsorbed in their pores, but the outer shell formed by the aggregate of the porous ceramic particles and the outer shell. by the hiba oil contained in the internal space which is surrounded by, Ru der what constitutes a microcapsule capable of slow release of the hiba oil. Shi
Therefore, since the hinokitiol-containing liquid or cedarwood oil inside the microcapsules are gradually released to the outside through the gaps between or porous ceramic particles through the pores of the respective porous ceramic particles, to prolong the hinokitiol release period be able to. In order to maintain a certain quality, it is suitable to use artificial ceramic particles containing high-purity ceramic as a main component as the porous ceramic particles.

In order to obtain the above effects sufficiently and to reduce the cost,
It is preferable that the porous ceramic particles and the mineral particles are contained in a mixing ratio of 1: 9 to 5: 5. It should be noted that the ratio may be appropriately changed in addition to the above-mentioned ratio depending on the place where the humidity control agent is applied.

As a method of properly controlling the humidity of a building and controlling the ant using the above-mentioned humidity control agent, a method of appropriately controlling the foundation concrete part of the building before placing the foundation concrete part A method of using a humidity control agent mixed in the soil as the underlay can be mentioned.

On the other hand, if the humidity control agent as described above is considered from another aspect, the ceramic particles obtained by holding the liquid containing hinokitiol or hiba oil in the pores and the powder of calcium borate mineral are formed . Mainly the mixture,
The porous ceramic particles are
In the formed outer shell and the inner space surrounded by the outer shell
Liquid or Hiba oil containing hinokitiol encapsulated
The microcapsules that can release this Hiba oil gradually
The mineral particles are composed of silicon dioxide.
It can be said that the termite controlling agent is characterized by containing a calcium borate component as a main component . Therefore, according to the present invention, for example, before placing the foundation concrete portion of the building, if the method of use is mixed with the soil that is the base of the foundation concrete portion, either humidity control or ant control will be performed. While the main purpose is, it is possible to obtain the other effect at the same time.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

The humidity control agent 1 in the present embodiment is mainly composed of a mixture of ceramic particles 11 described later and calcium borate-containing mineral powder (hereinafter referred to as "colemanite", not shown).

As shown in the schematic cross-sectional view of FIG. 1, one ceramic particle 11 contains hiba oil 12 in its pores 11a. As shown in the figure, each of the ceramic particles 11 is an ultra-porous fine particle having an average particle size of about 7 micrometers and having a large number of fine pores 11a. The ceramic particles 11 are, for example, a certain amount of hiba oil 12
It is manufactured by putting the oil in a container in which the oil is stored, and drying the hiba oil 12 to such an extent that it does not evaporate after the hiba oil 12 is adsorbed to the pores 11a. Alternatively, and by using a general microcapsule manufacturing apparatus, by spraying the hiba oil 12 and the ceramic particles 11 inside the vacuum apparatus, for example, as shown in a schematic sectional view in FIG.
It is possible to manufacture the microcapsule 10 in which the aggregate of a large number of ceramic particles 11 is used as the outer shell and the hiba oil 12 is included inside. In such a microcapsule 10,
Hiba oil 1 through the pores 11a of the ceramic particles 11
2 has a function of being discharged to the outside, or the hiba oil 12 is discharged to the outside through the gap between the ceramic particles 11. Therefore, the ceramic particles 11 itself having the hiba oil 12 adsorbed in the pores may be used, or the hiba oil 12 may be used as the microcapsules 10 contained therein.

Hiba oil 12 is an oil-soluble component containing a large amount of hinokitiol in a liquid produced by applying high temperature and high pressure steam to finely crushed pieces of Aomori Hiba, Taiwan cypress, bark, branches and leaves. In the present embodiment, for example, an acid oil is used among the oily components obtained by steam extraction of Aomori Hiba wood pieces and branches and leaves having a high hinokitiol content.
Hiba oil 1 thus obtained contains tropolones, which is a 7-membered ring compound peculiar to the Cypress family, and among them, hinokitiol (C ₁₀₎ which is a component having a particularly high repellent effect against termites. H ₁₂ O ₂ ) and its analog, β-drabulin (C ₁₀ H ₁₀ O ₂ ), are used, and the content is about 2% and the quality is stable and almost constant.

The colemanite powder is obtained by crushing the collected natural colemanite. Here, in consideration of the residual amount of calcium borate in the soil and the safety from the standpoint of health, the colemanite powder is used. The one containing calcium acid in the range of 1 mg / l or less is used.

Now, the termite-proof effect test of the ceramic particles 11 and the result thereof will be described with reference to FIGS. 2 and 3. This test complies with the Japan Wood Preservation Association Standard No. 13 (1992) "termite proofing efficacy test method for termite control agents for soil treatment and indoor test method of performance standard (1)". The test method will be briefly described below. As shown in FIG. 3, two test tubes T with glass branches
The branches of T1 and TT2 are arranged so as to face each other, and the glass tube GT having both ends opened is inserted into the branches. A sample X is put in this glass tube GT, and the sample is graduated in the longitudinal direction of the glass tube from one side (the right side in the illustrated example) in order at regular intervals of about 1 cm at intervals of 0 to 5. Also, one (right side in the illustrated example) test tube TT1
Contains a certain number of termites (not shown) together with the untreated soil Y, and the other (left side) test tube TT2.
The shard Z of red pine, which is a diet for termites, is put in the container. The upper ends of both test tubes are aluminum foil T with holes
Covered with Ta. That is, in this test, after a lapse of a predetermined time at a predetermined temperature, in order for the termites to eat the red pine pieces Z from the test tube TT1, it is examined to what scale the sample X can advance.

In this test, seven test sections A to G are set as the sample X, and three tests are conducted for each test section. FIG. 4A shows the content of the sample X in each test section. Specifically, each sample X is a glass tube GT
In the test category A, the ceramic particles 11 are 100
%, 40% of ceramic particles 11 and 60% of colemanite in test section B, 20% of ceramic particles 11 and 80% of colemanite in test section C, test section D
Colemanite is 100%, Test Category E is 20% ceramic particles 11 and 80% sand loam, Test Category F
Then, the sandy loam soil is uniformly filled so as to be 100%. Further, in the test section G, the ceramic particles 11 are placed only between the scales 3 and 4, and the sandy loam soil is placed between the scales 0 to 3 and 4 to 5.

The test results are shown in FIG. 4 (b). The numerical value in the figure indicates the degree of perforation, and the smaller this value is, the higher the termite prevention effect is. That is,
In Test Category A in which the ceramic particles 11 in Sample X were 100%, a very high termite-preventing effect was obtained. Further, the ceramic particles 11 in the sample X are 40% and 20%.
In the test categories B, C, and E, the high termite-preventing effect was obtained regardless of whether the mixture with the ceramic particles 11 was colemanite or sand loam soil. However, the termite-preventing effect was higher when cholemanite was mixed in the ceramic particles 11 than in sandy loam. Further, it can be said that the termite-preventing effect is low or almost nonexistent in the test categories D and F using the samples of cholemannite alone or sand loam soil alone.
Further, since the termite-proof effect in the test category G is low, it is higher when the sand loam soil and the ceramic particles 11 are uniformly mixed (test category E) than when the ceramic particles 11 are partially arranged in the sand loam soil. It was found that an anti-termite effect can be obtained.

From the above, the ceramic particles 1
It has been found that No. 1 has a good termite-preventing effect when mixed with other materials, particularly colemanite, in an appropriate ratio.

The humidity control agent 1 mainly composed of a mixture of such ceramic particles 11 and colemanite is a mixture of 2 parts by weight of the ceramic particles 11 and 8 parts by weight of colemanite in view of the above test results. is there. This ratio corresponds to the test category C in which the extremely high termite repellent effect was obtained as described above. In particular, since the ceramic particles 11 and the powder of colemanite are solid, they are easy to store and transport and are easy to handle.

Next, a method of using this embodiment will be described.

As shown in FIG. 5, at the construction site, before placing the foundation concrete portion B of the building, first, the soil S at a portion which can be the underlay of the foundation concrete portion B is carded, and the foundation concrete portion is When a predetermined amount of the crushed stone a is spread on the upper surface of the soil S that is the underlayment of B to form the crushed stone layer A, the humidity control agent 1 is applied to almost the height of the upper surface of the crushed stone layer A.
Is poured and pressure is applied from above to form a layer of the termite controlling agent 1. Then, the foundation concrete part B is placed on the layer of the humidity control agent 1 via the moisture-proof sheet WRS. In this way, the humidity control agent 1 can be mixed into the soil S at a predetermined location by an extremely simple operation, and the following effects are exhibited.

That is, when the humidity control agent 1 is used by mixing it in the soil S or by spraying it on the soil S, first, the hiba oil 12 is volatilized from the pores 11a of the ceramic particles 11, and the hiba oil 12 is obtained. By the action of hinokitiol contained in S, the termite-preventing action and the like are exerted in the soil S, and the termite damage can be continuously prevented from the early stage of construction to the medium to long term. Further, the humidity control agent 1 exerts an extremely good termite-preventing effect by combining the effect of hinokitiol and the termite-repelling effect originally possessed by colemanite. Moreover, the effect obtained by the released hinokitiol is not only an anti-termite effect, but also an insect-control effect against mites and other harmful insects, and a sterilization / antibacterial effect against mold and bacteria. Of course, it goes without saying that the humidity control effect originally possessed by colemanite is exhibited, and the ceramic particles 11 that have finished releasing the hiba oil 12 adsorb the surrounding water in the pores 11a or the adsorbed water. As a result, the humidity control effect is exerted.

It is also possible to mix the humidity control agent 1 and the cement powder with water at a predetermined ratio and pour it thinly on the slag stone layer A laid in the soil S to form the base of the basic concrete portion B. It is possible to sufficiently exert the excellent termite repellent effect which is almost the same as the above. Further, the ratio of the ceramic particles 11 to the colemanite may be appropriately changed in consideration of cost effectiveness within a range not significantly impairing the termite prevention effect. Further, it goes without saying that the humidity control agent 1 described above may be used as a termite control agent to simultaneously obtain a humidity control action.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0033]

INDUSTRIAL APPLICABILITY As described in detail above, the present invention comprises a mixture of novel ceramic particles having a liquid containing hiba oil or hinokitiol in the pores and mineral particles having a humidity control effect. It is a moisturizer, or from another perspective, a termite control agent. Then, the mineral particles are
It contains silicon as the main component and also contains calcium borate.
Therefore, the porous ceramic particles are
An outer shell formed by coalescence and surrounded by the outer shell
A liquid or a liquid containing hinokitiol encapsulated in the inner space
Is a micro oil that can slowly release this hiba oil
It constitutes a capsule. Therefore, by using mineral particles and ceramic particles in combination, in combination with the effect of hinokitiol retained in the ceramic particles and continuously released, it is possible to expect a long-term high humidity control effect and termite control effect. it can. In particular, if a colemanite containing calcium borate or the like is used as the mineral particles, the termite prevention effect can be further improved. Also,
Not only a high humidity control effect is achieved by the extremely simple work of mixing such a humidity control agent or termite control agent into the soil as the underlayment of the foundation concrete part of the building before placing the foundation concrete part of the building. , Exerts termite repellent effect.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing ceramic particles used in an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing a microcapsule composed of the ceramic particles and hiba oil of the same embodiment.

FIG. 3 is an explanatory diagram showing a method for testing the termite-proof effect of ceramic particles used in the same embodiment.

FIG. 4 is an explanatory diagram showing the contents and results of the same termite efficacy test.

FIG. 5 is a schematic cross-sectional view showing a usage example of the same embodiment.

[Explanation of symbols]

1 ... Humidifier 10 ... Microcapsules 11 ... Ceramic particles 11a ... Pores 12 ... Hiba oil S ... soil B: Foundation concrete section

Continuation of front page (56) Reference JP-A-3-176410 (JP, A) JP-A-2000-199283 (JP, A) JP-A-10-44109 (JP, A) JP-A-10-286914 (JP, A) JP 2001-233710 (JP, A) JP 2000-26218 (JP, A) Edited by the Chemical Society Dictionary, edited by the Chemical Dictionary 5, August 15, 1989, 32 reduced editions, page 950. (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01N 25 / 08,25 / 26 A01N 35 / 06,65 / 00

Claims (8)

(57) [Claims] 1. A mixture of mineral particles having a humidity controlling effect and porous ceramic particles obtained by holding a liquid containing hinokitiol or hiba oil in pores, the mineral particles being silicon dioxide. Containing a calcium borate component as a main component, wherein the porous ceramic particles contain an outer shell formed by their aggregates and a hinokitiol encapsulated in an inner space surrounded by the outer shell. A humidity control agent, which comprises a microcapsule capable of gradually releasing this hiba oil with a liquid or hiba oil. 2. The humidity control agent according to claim 1, wherein the mineral particles contain a calcium borate component in a range of 1 mg / l or less. 3. Porous ceramic particles and mineral particles,
The composition according to claim 1, which is contained in a mixing ratio of 1: 9 to 5: 5.
The humidity control agent according to 2 . 4. A humidity control agent according to claim 1, 2 or 3,
Before placing the concrete part of the foundation of the
How to use humidity control agents mixed in the soil underlying the reed part
Law. 5. A liquid containing hinokitiol in the pores.
Porous Ceramic Particles that Hold Oil or Hiba Oil
And a mixture of mineral particles with a humidity control effect
And the porous ceramic particles are aggregates thereof.
The outer shell formed by and the interior surrounded by the outer shell
Liquid or hinoki containing hinokitiol encapsulated in space
Microcaps that can release this Hiba oil slowly with
It constitutes a cell, and the mineral particles are carbon dioxide.
Containing calcium as the main component and calcium borate component
A termite control agent characterized by being 6. Ceramic particles and mineral particles are mixed at a ratio of 1: 9.
To 5: 5, a contract characterized by containing in a mixing ratio
The termite control agent according to claim 5. 7. The mineral particles contain a calcium borate component.
7. The composition according to claim 5, wherein the content is 1 mg / l or less.
The termite control agent listed. 8. The termite control agent according to claim 5, 6 or 7.
Before placing the foundation concrete part of the building,
Shiloa mixed in the soil as the foundation of the foundation concrete part
How to use the repellent.