JP3781405B2 - How to use hinokitiol-containing microcapsules - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a preferred method of using microcapsules containing hinokitiol.
[0002]
[Prior art]
Traditionally, hinokitiol has an insecticidal effect on termites and mites, an antibacterial and antibacterial effect on fungi and bacteria, and the formaldehyde contained in synthetic resin adhesives and new building materials used in buildings that cause sick house syndrome. It has been known to have various effects such as a removal effect. In view of this, a method is conceivable in which hinokitiol is mixed with concrete in a building or mixed with soil by various methods to obtain the above-described effect. For example, one in which a liquid containing hinokitiol is incorporated in a microcapsule is one of them.
[0003]
[Problems to be solved by the invention]
By the way, as such a microcapsule, a part thereof gradually collapses due to an environmental change such as light and temperature, and the liquid inside is released from the collapsed part, and hinokitiol volatilizes to exhibit insect repellent action and the like. What is considered. If such a large number of microcapsules are mixed in the soil, each microcapsule disintegrates at different times, so that hinokitiol is continuously released in the long term. However, since a large number of microcapsules are not in a collapsed state immediately after mixing in soil, a large amount of hinokitiol is not released. On the other hand, after most of the microcapsules are collapsed, hinokitiol is volatilized and its effect. Will fade. That is, when such a microcapsule is simply mixed in the soil, it is difficult to obtain an immediate effect or an effect for a very long time, although a certain degree of insect repellent effect by hinokitiol can be expected.
[0004]
Accordingly, the present invention provides a method for using a hinokitiol-containing microcapsule that can effectively obtain an insect-repellent effect and the like over a short period to a long period of time in order to solve the above-described problems.
[0005]
[Means for Solving the Problems]
That is, the present invention incorporates or sprays microcapsules containing a hinokitiol-containing liquid and having disintegration due to changes with time, together with either or both of the hinokitiol-containing liquid and the hinokitiol-containing wood powder. It is characterized by.
[0006]
In such a method, when the microcapsule and the hinokitiol-containing liquid are mixed or spread together in the soil, the insecticidal and antibacterial effects are immediately exhibited by the liquid immediately after that, and the hinokitiol in the liquid After the effect is reduced, the effect over the medium to long term is exhibited by the hinokitiol in the liquid released by the collapse of the microcapsules. On the other hand, when the microcapsule and wood powder are mixed or spread together in the soil, insecticidal and antibacterial effects, etc. are exerted over the medium and long term by the hinokitiol in the liquid released by the collapse of the microcapsule, Even after all the microcapsules have collapsed, the hinokitiol in the wood powder is effective for a very long time. Of course, if all of the microcapsules, the hinokitiol-containing liquid, and the wood powder are mixed or dispersed in the soil, a continuous effect can be obtained from just after that until long after.
[0007]
In particular, in order to appropriately control termites in buildings, it is desirable to mix or disperse the microcapsules in the soil around the foundations of buildings.
[0008]
Suitable examples of the wood powder include bark powders such as Aomori Hiba and Taiwan Hinoki.
[0009]
Further, in order to continuously exhibit an effect of a certain degree (for example, more than 10 years) only with a microcapsule, the microcapsule is composed of a porous capsule body composed of non-disintegrating particles and disintegrating particles, It is desirable that the liquid is composed of a hinokitiol-containing liquid incorporated in the capsule body, and the liquid is discharged from the capsule body by at least collapsing of the disintegrating particles due to a change with time. That is, with such a configuration, the non-disintegrating particles will block the pores formed after the disintegrating particles are collapsed as small as possible, so that the liquid inside is not released from the pores at a stretch and exhibits sustained release. The effect will last for a long time.
[0010]
A particularly preferred microcapsule configuration is one in which the non-disintegrating particles are made of ceramic particles and the disintegrating particles are made of vegetable protein.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 schematically shows a method for spraying microcapsules 1 containing hinokitiol on soil 4 in the present embodiment. In the figure, the spray liquid A adjusted with water or the like to prevent termite damage to the building is sprayed from the sprayer 5 onto the soil 4 around the foundation portion 3 of the building. The soil 4 below the foundation part 3 may be sprayed or mixed in the same manner before the foundation part 3 is constructed.
[0013]
Now, as shown in FIG. 2, the spray liquid A contains a liquid containing hinokitiol together with the microcapsules 1 and bark powder 2 of Aomori hiba and Taiwan cypress. In addition, since the microcapsule 1 and the bark powder 2 are extremely small, they are exaggerated in the figure.
[0014]
As schematically shown in FIG. 3, the microcapsule 1 includes a porous capsule body 11 and a liquid 12 containing hinokitiol held in the capsule body 11. The capsule body 11 is a porous particle having a size of about 2 μm, which is a mixture of non-disintegrating particles and disintegrating particles, and the non-disintegrating particles are composed of a plurality of ceramic particles 11a. Consists of vegetable protein particles 11b such as soybean lecithin. Among these, the internal liquid 12 is discharged from the holes formed when the vegetable protein particles 11b are disintegrated with time due to temperature change or the action of light. However, the liquid 12 contains hinokitiol extracted from Aomori Hiba and Taiwan Hinoki. That is, high-temperature and high-pressure steam is applied to a finely pulverized piece of wood, bark, branches and leaves of Aomori hiba and Taiwan cypress, and the resulting liquid (oil-soluble component and water-soluble component) is obtained. Since the oil-soluble component in the liquid contains a large amount of hinokitiol, the oil-soluble component is used as the liquid 12, but a water-soluble component may also be used. The microcapsule 1 having such a configuration is present in the spray liquid as a lump in which several tens to several hundreds of microcapsules 1 are attracted to each other. The microcapsule 1 having such a configuration is contained at a ratio of about 1 to 3% with respect to the spray liquid A. This is because the effects obtained even if mixed at a higher ratio are equivalent.
[0015]
In addition, the liquid sprayed together with the microcapsule 1 is equivalent to the liquid 12 contained in the capsule body 11 and is dissolved or dispersed in the spray liquid A. Therefore, in FIG. The illustration is omitted. On the other hand, the bark powder 2 is a finely pulverized bark portion of Aomori hiba and Taiwan cypress used for collecting hinokitiol. This is because the bark contains a relatively large amount of hinokitiol than other parts.
[0016]
Such a microcapsule 1, a hinokitiol-containing liquid, and a bark powder 2 spray solution A are sprayed or mixed on the soil 4 before construction of the foundation part 3 or the soil 4 around the constructed foundation part 3. First, hinokitiol is volatilized from the hinokitiol-containing liquid, and termite-proofing action is exerted in and around the soil 4 to prevent termite damage in the early stage of construction. Further, when the vegetable protein particles 11b of the microcapsule 1 start to collapse, the hinokitiol-containing liquid 12 is gradually released from the capsule body 11, and the hinokitiol volatilizes from the liquid 12, thereby preventing the hinokitiol from evaporating over the medium and long term. Termite effect is demonstrated. In addition, since the pores formed by the collapse of the vegetable protein particles 11b are blocked as small as possible by the ceramic particles 11a, the hinokitiol can be released over a relatively long period even in the individual microcapsules 1. However, depending on the microcapsule 1, the microcapsule 1 varies from the one that collapses from the initial stage to the one that collapses considerably later, so that the termite-proof effect of the microcapsule 1 is continuously exhibited. On the other hand, since only a small amount of hinokitiol is released from the bark powder 2, although it is inferior in immediate effect, it continues to release hinokitiol even after almost all of the microcapsules 1 have collapsed and the effect has faded. In addition, the termite-proof effect can be obtained for a longer period of time. In addition, the effect obtained by the hinokitiol released from the liquid, the microcapsule 1 and the bark powder 2 is not only a termite effect, but also an insecticidal effect against mites and other pests, a sterilization / antibacterial effect against molds and bacteria, Of course, it also includes the effect of removing the causative substances of sick house syndrome such as formaldehyde emanating from synthetic resin adhesives and new building materials used in buildings. In addition, after the building is completed, various effects including termite extermination effect can be achieved with high efficiency by spraying the spray liquid A on the soil after a lapse of a certain time.
[0017]
In addition, this invention is not restricted to the said embodiment, According to the objective, it can also be set as spraying of only a microcapsule and a hinokitiol containing liquid, or can be sprayed only of a microcapsule and bark powder. That is, in the case of the former method, a high effect can be obtained over a medium to long period from the initial stage of construction, and in the case of the latter method, a high effect can be maintained over a very long period. . In addition, the specific configuration and method are not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0018]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0019]
That is, according to the method of the present invention, when the microcapsules are mixed or dispersed in the soil together with the hinokitiol-containing liquid, immediately after that, an insecticidal effect, an antibacterial effect, etc. are obtained by the action of the hinokitiol volatilized from the liquid, and the effect is Even after thinning, the effect of hinokitiol in the internal liquid released by the gradual disintegration of the microcapsules can be obtained over a medium to long period of time. On the other hand, when microcapsules are mixed or sprayed with wood powder containing hinokitiol in soil, the immediate effect as if hinokitiol-containing liquid itself is sprayed cannot be obtained, but microcapsules provide insecticide effects over the medium to long term. The antibacterial effect and the like are exhibited, and even after all the microcapsules are collapsed, the hinokitiol in the wood powder exhibits the effect for a very long period of time. Furthermore, if all of the microcapsules, the hinokitiol-containing liquid and the wood powder are mixed or sprayed on the soil, the effect can be continuously obtained from immediately after that until a very long time has passed. Of course, the removal effect of formaldehyde, etc., which is a causative substance of sick house syndrome by hinokitiol, is also exhibited.
[0020]
In particular, if microcapsules are mixed or sprayed on the soil around the foundation of the building together with the liquid and wood powder containing the hinokitiol, termite control in the building can be efficiently and effectively performed by the action of the hinokitiol contained in each. It can be done effectively.
[0021]
In addition, if bark powder, such as Aomori Hiba and Taiwan Hinoki containing especially hinokitiol, is utilized as wood powder, the said effect can be improved.
[0022]
Further, the microcapsule has a structure in which a liquid containing hinokitiol is incorporated in the inside of a porous capsule body composed of non-disintegrating particles and disintegrating particles, and at least the disintegrating particles disintegrate due to a change with time. If the liquid is discharged from the capsule body, only the collapsible particles in the microcapsule will collapse, and the non-disintegrating particles will block the pores created after the collapse as much as possible. Is gradually released, and coupled with the application of a large number of microcapsules having different disintegration start times, the insect repellent effect of the microcapsules can be continuously maintained over a long period of time.
[0023]
In particular, when the porous capsule body employs ceramic particles as non-disintegrating particles, and the disintegrating particles employ plant proteins such as soybean lecithin, it contains chemicals that harm the soil environment. Therefore, the above effects can be effectively achieved.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a method for spraying microcapsules according to an embodiment of the present invention.
FIG. 2 is a schematic diagram showing a configuration of a spray liquid in the embodiment.
FIG. 3 is a schematic diagram of a microcapsule according to the embodiment.
[Explanation of symbols]
1 ... Microcapsule 2 ... Wood powder (bark powder)
3 ... Basic part 4 ... Soil 11 ... Capsule body 11a ... Non-disintegrating particles (ceramic particles)
11b ... Disintegrating particles (vegetable protein particles)
12 ... Liquid containing hinokitiol

Claims (5)

A hinokitiol-containing microcapsule containing a hinokitiol-containing liquid and disintegrating with time, together with either or both of the hinokitiol-containing liquid and the wood powder containing hinokitiol. How to use microcapsules. The method of using microcapsules according to claim 1, wherein the microcapsules are mixed or dispersed in soil around the foundation of a building. The method of using microcapsules according to claim 1 or 2, wherein the wood powder is a bark powder of a tree containing hinokitiol. The microcapsules, and the capsule body of porous made of a non-disintegrating particles and disintegrating particles were composed of a liquid containing hinokitiol built within the capsule body, disintegrating particles disintegrate due to aging The method for using a hinokitiol-containing microcapsule according to claim 1, 2 or 3, wherein the liquid containing the hinokitiol is released from the inside of the capsule body from the hole formed by the step . Wherein the non-disintegrating particles be made of a ceramic particles, the use of hinokitiol-containing microcapsules of claim 4, wherein the disintegrating particles are assumed to consist of vegetable protein.

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