JP2005200351A - Termite-proofing agent and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a termite-proofing agent homogeneously and stably compounded with a termite-proofing ingredient, causing no variation in its content even under handling including transportation and storage, easy to produce termite-proof products and conduct termite-proofing work, and capable of exerting high termite-proof function. <P>SOLUTION: The termite-proofing agent is such that the termite-proofing ingredient is integratedly compounded in inorganic material powder, the content of the termite-proofing ingredient is 0.01-30 wt.% and the mean granular size is 0.1-200μm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ant-proofing agent and a method for producing the same, and more specifically, an ant-proofing agent that is installed in an underfloor space of a building and prevents the entry of white ants, and a method for producing such an ant-proofing agent. It is targeted.

Sprinkle powder or liquid ant protection agent in the underfloor space of a building such as a house, lay a synthetic resin sheet containing ant protection agent, or use foam board with ant protection agent Pasting it on the surface to prevent white ants from penetrating from the ground through the underfloor space to the superstructure of the building.
Examples of the ant control agents used in such ant control technology include chemically synthesized compounds having ant control functions and natural ant control agents such as hiba oil.
As expected from its function, the termite-proofing agent contains components that are toxic to living organisms and components that may contaminate the environment, and handling thereof requires caution. It must be avoided that a high concentration of the termite-proofing agent is used as it is, or that a member containing the high concentration of the termite-proofing agent is exposed. In view of this, it has been practiced to use a compound as an antifungal agent in a diluted state by dispersing it in water or dissolving it in a solvent. If a dilute solution of an ant-repellent is blended in a molding material for foamed board, a product having a predetermined ant-repellent function can be obtained without directly handling a high concentration of the ant-repellent.

Patent Document 1 discloses a technique of adding an ant-preventive agent to molten resin at the time of extrusion molding of foamed polystyrene or the like in order to prevent white ants from being damaged by heat-insulating boards such as foamed polystyrene used for underfloor insulation. Has been proposed.
In Patent Document 2, as a method for producing a foamed resin molded article containing an ant-proofing agent, a solution containing the ant-proofing agent is coated on a pre-foamed polystyrene resin or an unfoamed polystyrene bead by fluid coating or the like. Technology has been proposed.
Patent Document 3 proposes a technique in which a polyol solution or an aqueous dispersion of an anti-anticide is added to a polyol containing a foaming agent that is a raw material for a foamed polyurethane resin molded article.
JP 2002-88185 A JP-A-10-259270 JP-A-10-259263

The above-described conventional use form of the ant-preventing agent has a problem that it is difficult to sufficiently exert the function of the ant-preventing agent.
As described in Patent Document 1, in the case where an antifungal agent is blended in the foamed resin molding material, it is difficult to uniformly disperse the antifungal agent in the molding material. For example, in the case of an ant-proof foam board used for a normal building application, the ant-proof agent must be blended in an extremely small proportion such as 0.1% by weight of the entire foamed resin. Naturally, since the amount of the termite-preventing agent added to the molding material is very small, it is difficult to disperse the termite-preventing agent uniformly throughout the amount of the molding agent. When a small amount of an anti-bacterial agent is added to a cylinder for melting and kneading the resin in a foamed resin extrusion molding device, even if a part of the anti-bacterial agent remains attached to the inner wall of the device, etc., The content of ant is greatly different. It takes a long time to melt and mix until a small amount of the termite-proofing agent is uniformly dispersed throughout the resin, resulting in a reduction in production efficiency. In the continuous forming apparatus for the foam board, a device for continuously supplying a small amount of the termite-proofing agent to the forming apparatus in a certain amount must be added. The supply system for the termite-proofing agent and the supply path to the molding device require strict safety measures and a sealing structure so that the termite-proofing agent does not leak, which complicates the device.

  As in Patent Document 2, in order to previously coat the polystyrene beads with the anti-repellent agent solution, a special device for that purpose is required. It is necessary to use a highly advanced technique for coating each polystyrene bead so that the termite-proofing agent is uniformly attached. At this time, it is also difficult to coat the termite-proofing agent so as not to impair the properties and moldability of the polystyrene beads. Moreover, as the number of operations for preparing a special ant inhibitor solution increases, the prepared ant inhibitor solution can be used only for coating polystyrene beads. Difficult to divert to other uses. A dedicated anti-anticide solution is expensive. If the termite-proofing agent is simply dispersed in water, the operation is relatively easy, but it is difficult to uniformly disperse any common termite-proofing agent in water. If the water-dispersed solution of the termite-proofing agent is stored until it is used for resin molding or the like, it is difficult for the termite-proofing agent to settle or float up and maintain a uniform dispersion state.

  If it is a diluted powder obtained by diluting the ant-preventive component powder with another powder material, the production is relatively easy. However, in the case of a simple powder mixture, the blending ratio of the termite-preventing component and the other powder material may be greatly biased depending on the location. In particular, when vibrations and impacts are repeated during transportation and storage, uneven distribution of the termite-preventing component occurs remarkably due to the difference in particle size and particle shape. When the above-mentioned foamed board is molded using such an antproofing agent having a large variation in the content of the antproofing component, the obtained antproofing foam board has a high concentration of the antproofing component. Then, there will be a place where there is almost no ant-proof component. When constructed in a building, white ants will invade only the parts of the ant-proof foam board that do not have ant-proof components. Ant-proof building materials such as ant-proof foam boards, even if there are parts that are inferior to the ant-proof function and are easy to eat and invade white ants, will not be able to perform the ant-proof function substantially, and the product value Is greatly impaired.

  The problem of the present invention is that the ant-preventive ingredients are evenly and stably blended, and the content of the ant-preventive ingredients does not vary depending on transportation and storage, etc. An object of the present invention is to provide an ant-proofing agent capable of exhibiting a high ant-proofing function.

The termite-preventing agent according to the present invention comprises an inorganic material powder integrated with a termite-preventing component, containing 0.01-30 wt% of the termite-preventing component, and having an average particle size of 0.1-200 μm. It is grainy.
[Anti-ant ingredient]
Basically, if the ant has a killing action against white ants or a characteristic that white ants repel, normal ant-proofing components used for ant-proofing of buildings can be used.
The following chemicals are listed as the anti-ant component.
Organophosphorus compounds: Hoxime, pyridafenthion, fenitrothion, tetrachlorvinphos, diclofenthion, propetanephos.

Carbamate compounds: carbaryl, fenobucarb, propoxur.
Pyrethroid compounds: Allethrin, permethrin, tralomethrin, bifenthrin, acrinatrin, alpha cypermethrin, cyfluthrin, ciphenothrin, praretrin.
Pyrethroid-like compounds: etofenprox, silafluophene.
Neonicotinoid compounds: imidacloprid, acetamiprid, clothianidin, thiamethoxam.
Other compounds: tripropyl isocyanate, pyrethrin, octachlorodipropyl ether, BDCP, fipronil, chlorphenavir, dinotefuran.

Natural products: Capric acid, Hiba neutral oil, Turmeric.
Examples of the termite-preventing component that can be preferably used in the present invention include imidacloprid, silafluophene, and bifenthrin.
The ant-proof component may be a solid such as powder or a liquid. In order to facilitate the composite integration by the mixing and pulverizing process described later, the powdery ant-proof component preferably has an average particle size of 0.1 to 200 μm. Those having an average particle diameter of 1 to 80 μm are more preferable. However, the average particle size defined here is defined for the raw material at the stage before being supplied to the composite integration process. In some cases, the average particle diameter of the ant-preventive components constituting the ant-repellent after the composite integration process is different.

[Inorganic material powder]
A material made of an inorganic material that can be combined and integrated with the ant-proofing component, does not impair the function of the ant-proofing component, and has little adverse effect on living things and the environment is used. In general, more inorganic materials satisfy these conditions than organic materials.
Specific examples include kaolin, clay, calcium carbonate, talc, mica, silica, diatomaceous earth, zeolite, bentonite, boron nitride, silicon carbide, and silicon nitride. These inorganic materials may be used alone or in combination of a plurality of types.
In the case where the termite-proofing agent is blended and used during the manufacturing process of foamed resin or the like, a material that does not alter or decompose the inorganic powder or adversely affect the manufacturing in the manufacturing process is preferable. For example, it is desirable to have heat resistance that can withstand high heat during resin molding. Moreover, it is also necessary to satisfy various usage conditions required for the usage form of the termite-proofing agent. For example, when used for a building, a flame retardant material is preferable.

When the ant-proof component is powder, the particle size of the inorganic material is preferably set larger than the particle size of the ant-proof component. In the state of the compounded and integrated anti-repellent agent, the anti-ant component is present in a part of the powder particle surface of the inorganic material. The average particle diameter of the inorganic material at the stage of being subjected to the composite integration process can be set to 0.1 to 200 μm.
[Manufacture of ant-proofing agents]
As long as the ant protection component can be combined and integrated with the powder of the inorganic material, a normal composite integration means of powders or a composite integration means of powder and liquid can be applied.
Specifically, using a mixing pulverizer such as a ball mill, a planetary rotating mill, or an impact pulverizer, the inorganic material powder is agitated and mixed with the ant-preventive component, and simultaneously with the pulverization, the inorganic material powder is protected. Ant components can be combined and integrated. Due to the effects of friction, impact, shearing force, thermal stress, etc. that occur when inorganic material powder or ant-preventive component powder is mixed and pulverized, inorganic material powder and ant-preventive component powder are separated. Combined physically or chemically, composite integration occurs. The agitation intensity, processing time, etc. are set such that such complex integration occurs. Without using a special binder or adhesive component, the inorganic material powder and the ant-proof component powder can be combined and integrated. However, a binder component or the like can be added in an auxiliary manner. By appropriately setting the treatment conditions, it is possible to adjust the particle size and distribution of the obtained termite-proofing agent, the compounded state of the termite-proofing component in the inorganic material in the termite-proofing agent particles, and the like.

In addition to the inorganic material powder and the ant protection component, another material can be blended at the time of manufacturing the ant protection agent, and simultaneously combined and integrated. For example, in addition to the binder and adhesive component described above, a coloring agent, a fragrance, and the like can be given.
[Anti-anticide]
The obtained termite-proofing agent is a granular material in which the termite-proofing component is combined and integrated with powder of an inorganic material.
The particle shape and composite structure vary depending on the materials used and the manufacturing conditions. Usually, it has an irregular grain shape. This is a state in which an inorganic material powder is mainly used, and ant-proof components are scattered on a part of the surface or a part of the inside thereof. In addition, in industrially produced ant protection products, there may be a small amount of single particles of inorganic materials or ant protection components that are inevitably produced,
The particle size of the termite-proofing agent can be changed depending on the production conditions, and can be set to a particle size suitable for the usage form. Usually, the average particle size is set in the range of 0.1 to 200 μm. The average particle diameter is preferably 1 to 80 μm. The preferred particle size range may be different depending on whether the ant-proofing agent is used after being sprayed in a granular form or when used in a foamed resin.

The termite-proofing agent contains the termite-proofing component in an amount that can at least exert the intended termite-proofing function. Specifically, 0.01-30% by weight of an ant-proof component is contained. Preferably, it is 0.1 to 10% by weight. The ratio of the ant-preventive component to be contained in the ant-preventing agent can be changed in the case where the ant-preventing agent is directly sprayed and used, or in the case where it is blended and used in the foamed resin.
[Use of anti-anticide]
The termite-proofing agent can be used in the same way for the same use as that of a conventional grain-shaped termite-proofing agent.
Since the content of the ant preventive agent is relatively small, it is not necessary to take strict safety measures for handling such as transportation and storage. In addition, since it is granular, it is less likely to leak or ooze out during transportation and storage, and is easy to handle, as compared to liquid ant preventives.

Specific usage forms include depositing an antifungal agent at the boundary between the ground and the foundation structure in the space under the building, spraying it on the ground floor, or filling a groove dug in the ground. Can be. In the case of such a usage form, it is also possible to use a granular ant preventive agent after blending it into a viscous liquid to form a cohesive cream or kneaded product.
If the termite-proofing agent is blended with a part of the molding material for molding and manufacturing a building member or the like, a molded article such as a building member or the like in which the termite-proofing agent is blended can be obtained.
Specifically, at the time of extrusion molding of the foamed resin, a granular ant preventive agent is mixed with the foamable resin beads as the molding material, or a granular ant preventive agent is added to the melt-kneaded resin in the extruder. Can be. Of course, the present invention can be applied to ordinary resin molding that is not a foamed resin, and can also be applied to in-mold molding and injection molding other than extrusion molding.

An ant-proofing paint can also be produced by blending an ant-proofing agent into the paint.
In any of the usage forms, it is possible to use an ant control agent in which the content of the ant protection component is appropriately set in accordance with the safety standards and environmental standards in the respective usage forms.

The termite-proofing agent according to the present invention is a granule in which the termite-proofing component that performs the actual termite-proofing function is combined and integrated with the powder of the inorganic material, so that it is only necessary to fulfill the termite-proofing function. This relatively low concentration of the ant preventive component is present in a state of being uniformly dispersed throughout the ant preventive agent.
Since the ant-preventive component is present in a certain ratio in the individual particles of the ant-repellent, when the ant-preventive agent is used, the ant-preventive component is not unevenly distributed depending on the location. Even if uneven distribution of the termite-preventive powder due to particle size or particle shape occurs during transportation and storage, all the termite-preventive powders contain the same proportion of the termite-preventive component, so the uneven distribution of the termite-preventive component Does not occur.
As a result, there is no variation in the ant protection function due to the uneven distribution of the ant protection component, and the problem that the part with a low ant protection function is eaten and passed by the white ants can be solved. In order to eliminate the portion having a low ant protection function, it is not necessary to add an excessive amount of the ant protection component. A highly concentrated area can be created locally, and there is no safety problem. Even if the concentration of the ant protection component in the ant protection agent is kept low, a sufficient ant protection function can be exhibited. Therefore, safety during handling is enhanced, strict management is not required, and it is easy to use.

  In particular, in various manufacturing equipment and manufacturing operations that require handling of an anti-anticide, such as the production of foamed resin containing an anti-anticide, a high-concentration anti-ant component remains attached inside the device, The problem of contact with a high concentration of ant protection component can be solved. Work safety is improved, manufacturing management is facilitated, and productivity can be improved.

The result of having manufactured an anti-anticide concretely and evaluating the performance is demonstrated.
[Materials used]
Anti-ant ingredient: Imidacloprid. Powder with an average particle size of 20 μm.
When taking a photo to be described later, in order to visually distinguish it from inorganic powder, it was colored orange with a colorant Chemicolor E (manufactured by Chemiholz). It is not necessary to color when using an actual ant inhibitor.
Inorganic material: kaolin clay. Powder with an average particle size of 40 μm.
[Manufacture of ant-proofing agents]
<Example 1>
196 g of the inorganic powder and 4 g of the ant-proofing component were put into a ball mill (Fritsch, planetary ball mill, capacity 500 cc) and pulverized and mixed. Specifically, only the ant-proof component was charged into the ball mill and operated for 15 minutes at a rotation speed of 150 rpm. Then, inorganic powder was added and it was made to operate for 30 minutes at 150 rpm.

<Comparative Example 1>
As a comparative example, the same material was mixed and processed with the same apparatus under different processing conditions. The treatment conditions were that the inorganic powder and the ant protection component were simultaneously charged into a ball mill and operated at a rotation speed of 50 rpm for 15 minutes.
[Structure and properties of ant-proofing agent]
<Example 1>
When the obtained ant-proofing agent was observed with a microscope, an orange-colored ant-proofing ingredient was integrally formed in a thin line shape on a part of white inorganic powder particles. It was confirmed that it was in a state. FIG. 1 is a photograph of an anti-anticide taken.

A small amount of the termite-proofing agent was extracted from the whole of the obtained termite-proofing agent, and the test for measuring the content of the termite-proofing component imidacloprid contained in the termite-proofing agent by liquid chromatography was repeated. Was almost constant in each test. A similar test was conducted after applying a certain amount of vibration to a fixed amount of the termite-proofing agent, but there was no variation in the content of the termite-proofing component depending on the location.
<Comparative Example 1>
As for the termite-proofing agent obtained in Comparative Example 1, when microscopic observation was performed, the white inorganic powder and the orange-colored termite-preventing component existed as separate agglomerates separated into pieces. Was recognized. FIG. 2 is a photograph of an anti-anticide taken.

As in Example 1, when the test for measuring the content of the termite-preventing component was repeated, the content of the termite-preventing component varied greatly every measurement. When a certain amount of the termite-proofing agent was vibrated for a certain period of time, uneven distribution occurred so that the layer of the termite-preventing component and the layer of the inorganic material could be visually distinguished by the difference in the colored state.
[Use of ant-proofing agent: foamed resin board]
The ant-proofing agent of Example 1 was used for the production of an ant-proof foamed polystyrene board by an extrusion method.
Extrusion foam molding by an extrusion molding apparatus was performed in a state where the antifoaming agent of Example 1 was blended in a normal raw material for foamed polystyrene board so as to have a predetermined content. The termite-proofing agent was supplied from a normal hopper device to a raw material melting cylinder of an extrusion molding device, kneaded together with the raw material, and uniformly dispersed throughout. The molding conditions were the same as those for ordinary foamed polystyrene boards. The extruded product was cut into a predetermined size to obtain an ant-proof foamed polystyrene board having a rectangular shape of 182 cm in length and 91 cm in width and a thickness of 5 cm.

<Characteristics of ant-proof polystyrene board>
A test for evaluating the performance of the ant-proof foamed polystyrene board obtained in the previous section was conducted. Example 2-1 contains 0.1% of the termite-proofing agent of Example 1, and Example 2-2 contains 0.2% of the termite-proofing agent of Example 1.
(1) Uniform dispersibility Samples were collected from three places near the center and at both ends in the length direction of the ant-proof foamed polystyrene board, and the content of imidacloprid, an ant-proof component, was measured by liquid chromatography. Specific gravity was also measured by a conventional method. The average value of the measured values at three locations was calculated. The results are shown in Table 1.

As a result of the above test, it can be seen that in all of Examples 2-1 and 2-2, there is no extreme bias of the ant-preventive component and the ant-preventive component is present uniformly throughout the board.
(2) Ant-proof performance The test according to the ant-proof room test prescribed | regulated to Japan Wood Preservation Society Standard No. 11 was performed with respect to the ant-proof foamed polystyrene board. The weathering test conducted at that time was carried out according to the weathering test treatment prescribed in JIS-K1571 “Performance standards and test methods for wood preservatives”.
Weather resistance test: Add water 10 times the volume of the specimen, and submerge the specimen below the surface of the water so as not to float. Using a magnetic stirrer, the rotor was rotated at 400 to 500 revolutions per minute at a temperature of 25 ± 3 ° C., stirred for 8 hours, and immediately drained. Next, the volatile matter was volatilized by standing in a drier at a temperature of 60 ± 2 ° C. for 16 hours. The above operation was repeated 10 times.

An ant proof room test was carried out on the test specimen that had undergone the weather resistance test. The results are shown in Table 2.

  As a result of the above test, it was confirmed that the ant-proof foamed polystyrene board of each example can exhibit practically sufficient ant-proof performance when used as an underfloor heat insulating material of a building.

  The termite-proofing agent of the present invention can be used, for example, to produce an termite-proof foam board or an termite-resin-molded product that is blended in a synthetic resin and used by being attached to the basic structure of a building.

Photo of an anti-anticide that represents an embodiment of the present invention Photograph of an anti-anticide produced by a method different from the production method of the present invention

Claims (3)

Ingredients are compounded and integrated with inorganic material powder,
0.01 to 30% by weight of the anti-ant component is contained,
A termite-proofing agent having an average particle size of 0.1 to 200 μm. The inorganic material is selected from the group consisting of kaolin, clay, calcium carbonate, talc, mica, silica, diatomaceous earth, zeolite, bentonite, boron nitride, silicon carbide, silicon nitride,
The ant preventive agent according to claim 1, wherein the ant preventive component is selected from the group consisting of neonicotinoid compounds, pyrethroid compounds, pyrethroid-like compounds, carbamate compounds, organophosphorus compounds, and natural product compounds. A method for producing the termite-proofing agent according to claim 1,
Step (a) of mixing and pulverizing the powder of the inorganic material having an average particle size of 0.1 to 200 μm and the powder of the termite-preventing component having an average particle size of 0.1 to 200 μm at the same time as mixing and grinding
The manufacturing method of the ant preventive containing this.

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