JP4356006B2 - Pest control agent - Google Patents

Description

  TECHNICAL FIELD The present invention mainly relates to a pest control agent used for combating moth pests such as ants, termites, cockroaches, rotifers, and yastes.

Various solid agents carrying pest-removing components are known as pest-removing agents used for pest control.
These solid preparations are sprayed on the walking path of 匍匐 pests on the ground, etc., and when the pesticidal organisms come into contact with the solid preparations, the solid preparation adheres to the 匍匐 pest body, and thereby the pesticidal component is added. It is effective and exterminates pests.

  The above-mentioned pest control agents include those having excellent quick action and those having excellent sustainability.

  Patent Document 1 discloses an agrochemical granule in which the sustainability of efficacy is improved by coating the inner core with a coating layer.

JP 2000-86404 A

As mentioned above, there are some pesticides composed of solid agents carrying pesticidal components that are fast-acting and long-lasting, but none that satisfy both fast-acting and long-lasting. .
Moreover, the agrochemical granule of patent document 1 improves the sustainability, and no consideration is given to rapid action.

  The present invention has been made in view of the foregoing, and an object of the present invention is to provide a solid pest-type pest control agent that can satisfy both rapid action and sustainability.

As a result of diligent research and experiments on the rapid efficacy and sustainability of solid agent-type pest control agents, the present inventors have found the following.
In order to satisfy the immediate effect, the effect should be exerted immediately when the pest is first contacted with the pest control agent sprayed on the ground or the like. The effect should be maintained even after leaving.
For this reason, if a pest control agent that immediately attaches to the body of the pest when the pest contacts it, and then the persistent solid agent remains on the ground, it is fast-acting and durable. Can be satisfied.

In addition, it has been found that rapid action and sustainability differ depending on the loading form of the pesticidal component of the solid carrier.
Specifically, the effective biological control component is excellent in rapid effect by being supported on the surface portion of the solid carrier, and the sustainability is excellent by being impregnated and supported inside the solid carrier.

The reason is considered as follows.
If the pest control component is supported on the surface portion of the solid carrier, the effect is immediately exerted by the contact with the pest, and thus the rapid effect is excellent. However, because the pest control component is attached to the surface, the drug is easily decomposed by contact with air and sunlight, the drug on the surface is washed away by rain, etc., and the drug is easily peeled off by physical contact. Therefore, it is inferior in sustainability by these.

  When the solid carrier is impregnated, the pesticidal component is gradually released, the pesticidal component is decomposed, washed away by rain, etc., and peeled off by physical contact, respectively, and the sustainability is good. However, it is inferior to its rapid effect.

Moreover, it discovered that a rapid effect and sustainability differed with the diameter of the solid support | carrier.
Specifically, if the diameter is small, the rapid effect is excellent, and if the diameter is large, the sustainability is excellent.

The reason is considered as follows.
If the diameter is small, it is easy to adhere to the body of pests, so it has excellent quick action. However, it is inferior in sustainability because what is scattered on the ground disappears early.
If the diameter is large, it is difficult to adhere to pests, so there is something that has been spread on the ground for a long time and it has good sustainability.

  In addition, the solid agent with a small diameter excellent in rapid effect is scattered by a wind when spraying on the ground etc., and its spraying efficiency is bad.

In addition, if a solid carrier is loaded with a pesticidal component having excellent fast-acting properties, it becomes a solid agent having excellent rapid-acting properties.
If a solid carrier is loaded with a pest control component having excellent sustainability, a solid agent having excellent sustainability is obtained.

  Moreover, if the above-mentioned three things are combined, it can be set as the solid agent which exhibits the much quicker effect and sustainability.

In the first invention, a plurality of external solid agents 23 which carry a pest control component and carry a pest control component on the surface of the internal solid agent 13 excellent in sustainability and excellent in quick action are glycerin or It is a pest control agent characterized in that polyethylene glycol is used as a binder and is attached so as to be peeled by contact with pests.

According to the first invention, the external solid agent 23 is peeled off from the internal solid agent 13 and adheres to the body of the pest when contacted by pests. Because it remains, it shows sustainability.
Therefore, it is a solid agent type pest control agent excellent in rapid action and sustainability.
Moreover, since glycerin or polyethylene glycol is used as the binder, the binding force can be adjusted.

  The aforementioned internal solid agent 13 having excellent sustainability is one of those in which a solid carrier 11 is loaded with a pest control component in an impregnated state, one having a large diameter, and one having a highly persistent pest control component. .

  The above-described external solid agent 23 excellent in rapid action has a pest control component attached to the surface portion of the solid carrier 21, has a small diameter, and carries a pest control component having a high fast effect. It is one of.

  And each above-mentioned internal solid agent 13 and each external solid agent 23 can be combined suitably.

  The lower limit value of the diameter of the internal solid agent 13 is 400 μm, the upper limit value of the diameter of the external solid agent 23 is 100 μm, and preferably the upper limit value of the diameter of the internal solid agent 13 is smaller than the body length of the target pest, The lower limit of the diameter of the external solid agent 23 is greater than half the body length and is 1 μm.

  The highly persistent pest control component is an insecticide or insect repellent, and the fast-acting pest control agent is an insecticide.

  The internal solid agent 13 is loaded with at least one pest control component selected from N, N-diethyl-m-toluamide (DET), enpentrin, and α-pinene, and the external solid agent 23 is filled with pyrethrin, eth It is preferable to carry at least one pest control component selected from Fenprox.

  It is preferably composed of at least one selected from solid carrier zeolite, diatomaceous earth, and activated carbon used for the internal solid agent 13 loaded with the pesticidal component in an impregnated state. It is preferable that the solid carrier used for the external solid agent 23 carrying the pesticidal component on the surface portion is composed of at least one selected from silica, silica sand, talc, clay and calcium carbonate.

In the second invention, a plurality of inert powders 24 having a diameter of 100 μm or less that do not carry a pest control agent are supported on the surface of the internal solid agent 13 that carries a pest control component and has excellent durability. It adheres so that it may peel by contact , The said inert powder agent is a pest control agent characterized by using the powder of a calcium carbonate, diatomaceous earth, a silica gel, magnesium oxide, aluminum oxide, and activated clay .

According to the second aspect of the invention, the inert powder 24 is peeled off from the internal solid agent 13 and adheres to the body of the pest when contacted by the pest, so that the internal solid agent 13 that exhibits rapid action and has excellent sustainability. Because it remains, it shows sustainability.
Therefore, it is a solid agent type pest control agent excellent in rapid action and sustainability.
In addition, since the inert powder does not contain a pest control component, it is relatively safe even if it is touched.

According to the first aspect of the present invention, the external solid agent 23 is peeled off from the internal solid agent 13 and adheres to the pest body due to contact with the pest, so that it exhibits rapid action and the internal solid excellent in sustainability. Since the agent 13 remains, the sustainability is exhibited.
Therefore, it is a solid agent type pest control agent excellent in rapid action and sustainability.
Moreover, since glycerin or polyethylene glycol is used as the binder, the binding force can be adjusted.

According to the invention of claim 3, even when the external solid agent 23 has a small diameter, a plurality of external solid agents 23 are attached to the internal solid agent 13 having a large diameter. There is no dance.
Therefore, it can spray efficiently and there is no waste.

According to the sixth aspect of the invention, the inert powder agent 24 is peeled off from the internal solid agent 13 and adheres to the body of the pest due to contact with the pest, so that it exhibits rapid action and the internal solid excellent in sustainability. Since the agent 13 remains, the sustainability is exhibited.
Therefore, it is a solid agent type pest control agent excellent in rapid action and sustainability.
In addition, since the inert powder does not contain a pest control component, it is relatively safe even if it is touched.

A first embodiment of the present invention will be described with reference to FIG. Note that FIG. 1 is schematically illustrated for easy understanding, and the form and the diameter are not limited to those illustrated in FIG.
The pest control agent 1 according to the present invention is a solid agent composed of two layers of an inner layer 10 and an outer layer 20.
The inner layer 10 is composed of an internal solid agent 13 having a solid carrier 11 carrying a pest control component 12. This internal solid agent 13 is excellent in sustainability. In this embodiment, the diameter is large, and the pesticidal component 12 is supported on the solid support 11 in an impregnated state so as to have excellent sustainability.

The outer layer 20 is composed of a plurality of external solid agents 23 each carrying a pest control component 22 on a solid carrier 21, and each external solid agent 23 adheres to the surface of the internal solid agent 13.
The adhesive force of each external solid agent 23 is such that it does not peel off by natural forces such as wind, but peels off when it comes into contact with pests.
The external solid agent 23 is excellent in quick action. In this embodiment, the diameter is small, and the pest control component 22 is supported in a state of adhering to the surface portion of the solid carrier 21 to form an external solid agent having excellent quick action.
In FIG. 1, the external solid agent 23 is attached only to a part of the surface of the internal solid agent 13, but this is for the sake of easy understanding. Yes. Moreover, it may adhere so that the external solid agent 23 may mutually overlap.

  This pest control agent 1 is used by being sprayed on the walking path of moth pests. Then, when the pest is brought into contact with the pest control agent 1 or the like, the external solid agent 23 is peeled off from the internal solid agent 13 and attached to the body of the pest, thereby exhibiting rapid action.

In addition, since a plurality of external solid agents 23 having a small diameter are attached to the surface of the internal solid agent 13 having a large diameter, the diameter of the pest control agent 1 is large and there is no scattering when sprayed.
Therefore, since it can spray correctly on a predetermined place, a pest control component can be sprayed efficiently and there is no waste.

  The above-mentioned internal solid preparation 13 having excellent sustainability is not limited to the above-mentioned ones. The first one having a pest control component carried in an impregnated state, the second one having a large diameter, and a pest having high sustainability. Any one of the third ones carrying a control component, a combination of these two conditions, or a combination of these three conditions may be used.

  The above-mentioned external solid agent 23 excellent in rapid action is not limited to the above, but the first one carried in a state where the pest control component is attached to the surface portion, the second one having a small diameter, the fast action Any one of the third ones having a high pest control component, a combination of these two conditions, or a combination of these three conditions may be used.

Further, the combination of the internal solid agent 13 and the external solid agent 23 is free, and it is not necessary to make the pest control component loaded, the diameter, and the supported pest control component corresponding to each other.
For example, the second internal solid agent 13 having a large diameter may be combined with the first external solid agent 23 carrying a pest control component in a state of adhering to the surface portion.

The solid support 11 of the inner layer 10 is preferably a porous, high-keeping ability of the pest control component, inorganic or organic particles having sustained release of the pest control component, or a powder obtained by kneading the powder.
As specific examples, zeolite, bentonite, diatomaceous earth, activated clay, quartz sand, quartzite, talc, fluorite, activated carbon, calcium carbonate, nylon powder, cellulose powder, or the like is directly or kneaded.

The lower limit of the diameter of the solid carrier 11 (internal fixing agent 13) is 400 μm, and the upper limit is set based on the body length of the target pest.
For example, the value is larger than half of the body length and smaller than the body length.

The pest control component carried on the solid carrier 11 of the inner layer 10 can be appropriately selected from the usable pest control components described later in accordance with the target pest.
In particular, a pesticide with high safety and high durability or a pest repellent with high repellent properties is desirable.

The solid carrier 21 of the outer layer 20 is preferably an inorganic or organic powder having a high ability to hold a pesticidal component and a sustained release of the pesticidal component.
Specific examples include powders such as quartz sand, quartzite, talc, clay, zeolite, bentonite, diatomaceous earth, activated carbon, calcium carbonate, nylon powder, and cellulose powder.

  The diameter of the solid carrier 21 (external fixing agent 23) is in the range of 1 μm to 100 μm, preferably in the range of 2 μm to 50 μm, and more preferably in the range of 5 μm to 20 μm.

The pest control component carried on the solid carrier 21 of the outer layer 20 can be appropriately selected according to the target pest from the pest control components that can be used.
In particular, insecticides that are fast acting and highly stable are preferred.

In order to attach the external solid agent 23 to the surface of the internal solid agent 13, a binder is used.
Examples of the binder include glycerin and polyethylene glycol. The glycerin and polyethylene glycol can be adjusted in caking force .

Next, the pest control components that can be used will be described.
The pest control component used for the inner layer 10 and the outer layer 20 is not particularly limited as long as it is effective against target pests such as ants, but pyrethroid insecticides, organophosphorus insecticides, carbamate insecticides, Other insecticides, pest repellents, plant essential oils and the like can be mentioned. Specific active ingredient names are as follows.

Among these, the pest control component used particularly for the inner layer 10 includes resmethrin (Chryslon, Chryslonforte), permethrin, phenothrin, fenvalerate, cyphenothrin, empentrin, tralomethrin, transfluthrin, methfurthrin, diazinon, fenitrothion, pyridafenthion, Malathion, trichlorfone, chlorpyrifos, fenthion, propetanephos, temefos, prothiophos, phoxime, siaphos, isoprocarb, phenocarb, propoxyl, XMC, bendiocarb, ethiophene carb, pirimicarb, imidacloprid, acetamiprid, nitenpyramid, fiprotenil, fiprotenil High repellency of persistent insecticides such as DET and terpenes Insect repellent is particularly effective.
Pest control components used in the outer layer 20 include allethrin (pinamine, pinamine forte, esbioslin, bioareslin, esviol), phthalthrin (neopinamin, neopinamine forte), framethrin (pinamin D, pinamine D forte), terrareslin, imiprotorin. Highly effective insecticides such as etofenprox, pyrethrin, pesticide chrysanthemum powder, azamethifos, indoxacarb are particularly effective.
In the case of a pest control component having excellent sustainability and rapid efficacy such as praretrin (etoc, 98 etoc), cypermethrin, chlorpyrifosmethyl, carbaryl, carbosulfan, and methoxadiazone, both the inner layer 10 and the outer layer 20 are the same. Use of ingredients is also effective.
That is, the use of the above-mentioned pesticidal component provides a pesticidal agent with further improved rapidity and sustainability.
In addition, the active ingredient used for the inner layer 10 and the outer layer 20 is not necessarily classified into either as described above, and any of the above components can be used for both the inner layer 10 and the outer layer 20.

(Pyrethroid insecticide)
Allethrin (trade name (hereinafter the same): pinamine), dl.d-T80-alleslin (pinamin forte), dl.d-T-alleslin (esbioslin), dl.dT-areslin (bioareslin), d. d-T-arethrin (esviol), d.d-T80-praretrin (ethok), d.d-T98-praretrin (98 etok), phthalthrin (neopinamin), d-T80-phthalthrin (neopinamin forte), resmethrin (Chryslon), d-T80-Resmethrin (Chryslon Forte), Flamethrin (Pinamin D), d-T80-Furamethrin (Pinamin D Forte) Permethrin (Exmine), Phenothrin (Smithrin), Fenvalerate (Sumicydin), Cypermethrin ( Agrosulin) Enotorin (Gokylato), Empentrin (Vapersulin), Terrareslin (Knoxlin), Imiprotorin (Pral), Etofenprox (Trevon), Traromesrin (Scout), Transfluthrin (Biosulin), Metofluthrin (Eminence), Piretoline (Pesticide Chrysanthemum) EXPER), insecticide chrysanthemum powder, etc.

(Organic phosphorus insecticide)
Diazinon (Diazinon), Fenitrothion (Sumithion), Pyridafenthion (Off-Nack), Marathion (Marathon), Trichlorhon (Dipterex), Chlorpyrifos (Darth Van), Fentione (Vitex), Dichlorvos (DDVP), Propetanfos (Sarotin), Temefos Bay , Prothiophos (Toyothion), phoxime, azamethyphos (Alphacron), siaphos (Zaynock), chlorpyrifosmethyl (Satel) and the like.

(Carbamate insecticide)
Carbaryl (Nack), Isoprocarb (Mypsin), Fenobucarb (Bassa), Propoxyl (Sunside), XMC (McBar) Bendiocarb (Tato), Ethiophene Carb (Allylmate), Pirimicurve (Pyrimer), Carbosulfuran (Advantage), etc.

(Oxadiazole insecticide)
Metoxadiazone (Elemic) etc.

(Chloronicotinyl insecticide)
Imidacloprid (Admeier), Acetamiprid (Mospiran), Nitenpyram (Best Guard), etc.

(Oxadiazine insecticide)
Indoxacarb (tornado) etc.

(Phenylpyrazole insecticide)
Fipronil (Prince) etc.

(Amidinohydrazone insecticide)
Hydramethylnon etc.

(Other insecticides)
Boric acid, silafluophene (silonene), dinotefuran (starkle), etc.

(Pest repellent)
N, N-diethyl-m-toluamide (DET), dimethyl phthalate, dibutyl phthalate, 2-ethyl-1,3-hexanediol, di-n-propylisocincomeronate, p-dichlorobenzene, di-n-butyl Succinate, caran-3,4-diol, 1-methylpropyl 2- (2-hydroxyethyl) -1-piperidinecarboxylate, capric acid diethylamide, N-propylacetanilide, β-naphthol, camphor and the like.

(Plant essential oil)
Anise oil, orange oil, cassia oil, grapefruit oil, perilla oil, clove oil, citronella oil, cinnamon oil, peppermint oil, hiba oil, cypress oil, peppermint oil, eucalyptus oil, lemongrass oil, geranium oil, fennel oil, penny Royal oil, thyme white oil, pimento oil, bergamot oil, lavender oil, cedarwood oil, etc.

(Active ingredient in plant essential oil)
α-pinene, terpinene, cymene, sabinene, elemen, cedrene, elemol, bidrol, cedrol, hinokitiol, tsuyaprisin, tropoid, hinokine, tyoopsen, borneol, camphene, terpineol, terpinyl ester, dipentene, farandrene, kaliolefin, vanillin, Furfural, furfuryl alcohol, pinocarbenol, pinocarvone, myrtenol, berbenone, carvone, eudesmol, pyrerithone, twen, funkyl alcohol, methyl anthranilate, visaborene, bergaptol, nonyl aldehyde, nonyl alcohol, nootkatone, octyl aldehyde, Linalyl acetate, geranyl acetate, nerolidol, ocimene, methyl anthranilate, indole, jasmon, Tsu aldehyde, p- menthane-3,8-diol, pulegone, citral, citronellal, Oigenodehido, Nepitarikku acid, methylheptenone, decyl aldehyde, myrcene, acetic geraniol, thymol, limonene, cineole and the like.

Further, depending on the purpose of use, an antioxidant, a synergist, a fungicide, an antifungal agent and the like can be appropriately added.
(Antioxidant)
(Phenolic antioxidant)
3,5-di-t-butyl-4-hydroxytoluene (BHT), butylhydroxyanisole (BHA), 2,6-di-t-butyl-4-ethylphenol, stearyl-β- (3,5-di -T-butyl-4-hydroxyphenyl) propionate and the like.
(Bisphenol antioxidant)
2,2'-methylene (4-methyl-6-t-butylphenol), 2,2'-methylene (4-ethyl-6-t-butylphenol), 4,4'-thiobis (3-methyl-6- t-butylphenol), 4,4'-butylidene (3-methyl-6-t-butylphenol) and the like.
(High molecular phenolic antioxidant)
1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenol) butane, 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl- 4-hydroxybenzyl) benzene, tetrakis [methylene-3- (3 ′, 5′-di-t-butyl-4′-hydroxyphenyl) propionate] methane, tocopherol and the like.
(Sulfur-based antioxidant)
Dilauryl 3,3'-thiodipropionate, dimyristyl 3,3'-thiodipropionate, distearyl 3,3'-thiodipropionate, and the like.
(Phosphorus antioxidant)
Triphenyl phosphite, diphenylisodecyl phosphite, phenyl diisodecyl phosphite, tris (noniphenyl) phosphite and the like.
(Other)
Elsolvebic acid, isopropyl citrate, nordihydroguaiaretic acid, propyl gallate and the like.

(Synergist)
Butyl carbitol, 6- (propyl piperonyl) -butyl carbyl ether (piperonyl butoxide), octachlorodipropyl ether (S-421), isobornyl thiocyanate acetate (IBTA), N-octyl bicyclo Heptenecarboximide (Sinepilin 222), N- (2-ethylhexyl) -1-isopropyl-4-methylbicyclo (2,2,2) oct-5-ene-2,3-dicarboximide (Sinepilin 500), N- (2-ethylhexyl) -bicyclo (2,2,1) -hept-5-ene-2,3dicarboximide (MGK264).

(Antibacterial and antifungal agent)
Ethyl alcohol, isopropyl alcohol, phenol, bromcinnamaldehyde, thymol, o-phenylphenol, hinokitiol, wasaolo, naphthalene and the like.

Furthermore, in order to improve the dispersibility of the pesticidal component or the like in the solid carrier at the time of production, an appropriate amount of an appropriate solvent can be added as appropriate.
(solvent)
n-paraffin, isoparaffin, liquid paraffin, white kerosene, petroleum naphtha, naphthene (cyclic hydrocarbon) and the like.

(About pests to be controlled)
The main control targets of the above-mentioned pest control agents are outdoor spider pests, but by adjusting the types, amounts, diameters, etc. of pest control components, solid carriers, binders, indoor spider pests Can also be fully targeted for extermination.

  Specifically, the target pests mainly live in the garden, balcony, around the house, around trees, etc., or enter the house from there, such as Ami-meari, Ruriari, Tobiirosari, Tobiirokeari, Amilocareari. , Yellow ants, red ants, black ants, black ants, black ants, etc. Termites such as centipedes, Yamato termites, moth termites, daiko termites, American white-tailed termites, slugs, mountain slugs, white slugs, white winged slugs, white slugs, slugs, slugs It is a larva of Iraga and Dokuga such as Ilaga and Chadokuga, but cockroaches such as German cockroaches, Black cockroaches, Yamato cockroaches, American cockroaches, etc. by adjusting solid carrier, binder type / amount, diameter, etc. , Ants such as Himeari, Himeari, mites such as house dust mites, winged mites, staghorn mites, southern ticks, mites, white flea mites, fleas such as flea mites, fleas such as human fleas, cat fleas, indoor lice such as whiteflies, head lice The target pest can also be targeted.

  The above-mentioned pests are worms, but flying pests such as flies, mosquitoes, and bees can also be targeted.

Next, the diameters of the solid carrier 11 of the inner layer 10 and the solid carrier 21 of the outer layer 20 will be described.
The diameter of the solid carrier 11 (inner solid agent 13) of the inner layer 10 is determined mainly by the durability of the efficacy and the ease with which the solid carrier 21 of the outer layer 20 adheres to pests.
The sustainability of the efficacy is mainly determined by the weather resistance that maintains a certain shape and size even when exposed to rain and wind, and the carrying ability to carry a necessary amount of a pest control component.
From the experimental results of the relationship between the diameter of the solid carrier 11 (internal solid agent 13) of the inner layer 10 and the durability of the effect, which will be described later, the lower limit of the diameter of the solid carrier 11 (inner solid agent 13) of the inner layer 10 is suitably about 400 μm. It is.

If the diameter of the solid carrier 11 (inner solid agent 13) of the inner layer 10 is too large, the opportunity for the pests to come into contact with the solid carrier 21 of the outer layer 20 is lost, so the solid carrier 21 (external solid agent 23) of the outer layer 20 is removed. An appropriate size to attach to the pest body is required. Therefore, the upper limit value of the solid carrier 11 of the inner layer 10 is determined according to the size of the pest.
From the experimental results of the diameter of the solid carrier 11 (inner solid agent 13) of the inner layer 10 and the ease of peeling of the solid carrier 21 (outer solid agent 23) of the outer layer 20, which will be described later, it is about 2,000 μm for German cockroaches and about 8000 μm for German cockroaches. It is presumed that the effectiveness of the solid carrier 11 of the inner layer 10 is gradually reduced, and when the diameter of the solid carrier 11 of the inner layer 10 is larger than these diameters, the solid carrier 21 of the outer layer 20 is less likely to adhere to pests.
Therefore, these numbers are considered appropriate as the upper limit.

  The lengths of the main pests that are the targets described above are as shown in Table 1 below. From the results of the above-mentioned experiments on the red ants and cockroaches, the upper limit of the diameter of the solid carrier 11 of the inner layer 10 is larger than half of the body length. The range is preferably smaller than the body length.

The diameter of the solid carrier 21 (external solid agent 23) of the outer layer 20 is mainly determined by the rapid action.
That is, as the diameter of the solid carrier 21 of the outer layer 20 is smaller, the higher rapid effect is exhibited, and as the diameter is increased, the rapid effect is decreased.
From the experimental results of the diameter and the fast-acting effect of the solid carrier of the outer layer described later, the fast-acting tendency tended to decline further at around 100 μm or more for both the red snapper and the German cockroach.
From this result, it was determined that the upper limit value of the diameter of the solid support in the outer layer was appropriate to be about 100 μm.

  On the other hand, the lower limit value of the diameter of the solid carrier 21 of the outer layer 20 is preferably 1 μm, more preferably, the diameter of the solid carrier 21 is uniformly adjusted, the amount of the pest control component supported, the amount attached to the insect body, and the like. 2 μm is suitable.

Next, a test for the diameters of the internal solid agent 13 and the external solid agent 23 will be described.
(1) Adjustment of powder In order to adjust powder having different diameters, the following operation was performed.
Sample materials shown in Table 2 below were prepared.

  A powder of A to E that has been applied to a pulverizer and a powder that has not been pulverized are mixed and classified according to particle size through a JIS standard sieve (12700 μm to 44 μm) to obtain a powder having an average diameter shown in Table 3 below. It was.

A powder having the above-mentioned diameter was loaded with a pest control component effective for the shellfish to obtain an internal solid agent, and the effect of the diameter of the internal solid agent on the sustainability of the effect was tested.
(Test method) Area expulsion method (Test insect)

  The experimental results were as shown in Table 4 below and the chart in FIG.

  From the above results, it has been found that the sustainability of the effect tends to be excellent when the diameter is 400 μm or more.

A 17 μm solid carrier was attached to each of the internal solid agents described above, and the effect of the diameter of the internal solid agent on the ease of peeling of the solid carrier in the outer layer due to contact with pests was tested.
(Test method) Forced contact method (Test insects) Red ants, German cockroaches

  The experimental results were as shown in Table 5 below and FIG.

  From this, it was found that the upper limit value of the diameter of the internal solid agent 13 was 2000 μm in the case of the ants and 8000 μm in the case of German cockroaches.

The above-mentioned powder was loaded with a pest control component effective for red ants and German cockroaches to prepare an external solid agent 23, and the effect of the diameter of the external solid agent 23 on the rapid efficacy was tested.
(Test method) Forced contact method (Test insects) Red ants, German cockroaches

  The experimental results were as shown in Table 6 below and FIG.

  From the test results described above, both the red snapper and the German cockroach tended to decrease the rapid efficacy at 100 μm or more.

Next, the relationship between the amount of the binder that attaches the external solid agent 23 to the surface of the internal solid agent 13 and the ease with which the external solid agent 23 adheres to the insect body, that is, the ease of peeling was tested.
As a binder, glycerin and polyethylene glycol (PEG200) were used, and an internal solid agent and an external solid agent, which are components shown in Table 7 below, were attached to obtain a pest control agent.
In Table 7 above, the zeolite is 800 μm and the silica is 17 μm.

The test method is as follows.
Measure the weight of the test insect to which the above-mentioned pest control agent is not attached.
The above-mentioned pest control agent and the test insect are put in a polycup, and the pest control agent and the test insect are forcibly contacted by shaking the polycup for 10 seconds.
Open this plastic cup and let the test insect walk and put it in another cup.
Then, the weight of the test insect entering the cup is measured, and the difference from the weight before adhesion is defined as the adhesion amount, and the adhesion amount is divided by the weight of the test insect (weight before adhesion). The amount of adhesion per gram of insect was calculated.

  There are three types of test insects: red-eye ants, okadangamushi, and cockroaches.

  The test results of the ants were as shown in the chart shown in Table 8 and FIG.

  The test results of Okadamushi were as shown in the charts shown in Table 9 and FIG.

  The test results of German cockroaches were as shown in the chart shown in Table 10 and FIG.

  From this test result, it was found that the amount of adhesion decreased as the amount of binder (glycerin, PEG200) increased, although it varied slightly depending on the type of test insect.

Next, the relationship between the amount of the binder described above and the scattering of the pest control agent was tested.
As the binder, glycerin and PEG200 were used in the same manner as described above, and the external solid agent 23 having the components shown in Tables 11 to 9 below was attached to the internal solid agent 13 to prepare a pest control agent.
In Table 11 above, the zeolite is 800 μm and the silica is 17 μm.

The test method evaluated using the test apparatus shown in FIG.
Specifically, as shown in FIG. 8, a glass plate 32 having a diameter of 30 cm having a hole 31 having a diameter of 9 cm is placed on a cylindrical glass cylinder 30 having an inner diameter of 22 cm (height: 33 cm). Then, 50 g of the test agent was gently added, and the time until no scattering was observed by visual observation was measured. Three replicates were performed to determine the average value.

  The test results were as shown in Table 12 below and FIG.

Next, a test for increasing the efficacy by adding n-paraffin (kerosene) as the above-mentioned solvent was conducted.
As shown in Table 13 below, Specimen 1 in which n-paraffin was added only to the external solid agent, Specimen 2 in which n-paraffin was added to both the external solid agent and the internal solid agent, and Specimen 3 was used, and the efficacy test on 15 adult ants was repeated twice by the forced contact method.

As a result, KT50 (minutes and seconds) was 1.33 for sample 1, 0.51 for sample 2, and 0.43 for sample 3.
From this, it was found that the efficacy was increased by adding n-paraffin to the external solid agent and the internal solid agent, respectively.

Next, a second embodiment of the present invention will be described.
As shown in FIG. 10, the inner layer 10 is the same as that of the first embodiment, and the outer layer 20 is only an inert powder 24 that does not carry a pest control component, and the inert powder 24 is on the surface of the inner solid agent 13. It adheres as in the first embodiment.

  The inert powder agent 24 is a powder of calcium carbonate, diatomaceous earth, silica gel, magnesium oxide, aluminum oxide, activated clay, and these powders damage the waterproof layer of the cuticle of harmful components (mainly insects) and cause dehydration. Alternatively, the control effect is exhibited by the absorption of lipid from the body surface by the powder.

  In this second embodiment, the diameter of the solid carrier 11 of the inner layer 10 (the diameter of the inner solid agent 13) and the diameter of the inert powder 24 of the outer layer 20 are the same as those in the first embodiment.

  And by spraying the pest control agent of this second embodiment on the walking path of the pest, the inactive powder adheres to the body of the pest when the pest comes into contact, and the rapid action is achieved. Demonstrate, and only the inner layer (internal solid agent) remains to exhibit sustainability.

Next, examples will be described. Table 14 below shows Examples 1 to 14 and Comparative Examples 1 and 2.

Production examples (preparation methods) of the respective examples and comparative examples will be described.
Samples shown in the examples were prepared according to the following procedure.
(Example 1)
(1) Into a heating and stirring apparatus, 1.0 g of diethyl toluamide (DET, trade name: Lipper DET; manufactured by Yoshitomi Fine Chemicals Co., Ltd.) and 10 g of glycerin are heated and stirred at about 60 ° C. (about 10 minutes).
(Liquid A)
(2) In another stirrer, 89 g of zeolite (average diameter: about 800 μm, trade name: Nitto Zeolite No. 1 manufactured by Nitto Flour Industry Co., Ltd.) is added, and the whole is stirred while adding the liquid A ( About 10 minutes).
(B agent)
(3) 0.15 g of piperonyl butoxide, 0.02 g of BHT and 0.25 g of n-paraffin (trade name: neotisol) are put in a stirring device, and the mixture is stirred and mixed for about 15 minutes (about 60 ° C.).
(C liquid)
(4) Put another 97.28 g of silica powder (average diameter of about 17 μm) in another stirrer and stir while adding C solution. Further, 2.3 g of insecticidal chrysanthemum powder is added and mixed with stirring for about 5 minutes.
(D agent)
(5) The agent B and the agent D are stirred and mixed for about 5 minutes to obtain the test agent of Example 1.

  The following Example 2 is the same preparation method as Example 1, and the difference from the preparation method of Example 1 is as follows.

(Example 2)
The zeolite is diatomaceous earth (average diameter of about 500 to 1000 μm).

(Example 3)
DET is Empentrin (brand name Vaporthrin).

(Example 4)
Zeolite is used as diatomaceous earth.
Let DET be Emperin.

(Example 5)
DET is α-pinene (α-pinene, manufactured by ALDLIC).

(Example 6)
Zeolite is used as diatomaceous earth.
Let DET be α-pinene.

(Example 7)
The glycerin is polyethylene glycol (PEG # 200, manufactured by Lion Corporation).

(Example 8)
The silica powder is talc (average diameter is about 9.1 μm).

Example 9
The silica powder is made clay (average diameter about 6.3 μm).

(Example 10)
The silica powder is calcium carbonate (average diameter about 9 μm).

Example 11
Silica stone powder is used as zeolite (average diameter of about 1.25 μm, trade name: SP # 2300 manufactured by Nitto Flour Chemical Co., Ltd.).

Example 12
Similar to Example 1, the outer layer is 1.5 times the inner layer.

(Example 13)
As in Example 1, the outer layer is 2.0 times the inner layer.

  Examples 1 to 13 have a pest control component (medicine) in the inner layer and the outer layer, and correspond to the above-described first embodiment of the present invention.

(Example 14)
The step of the liquid C in Example 1 is eliminated, and the B agent and 100 g of calcium carbonate are stirred and mixed for about 5 minutes to obtain the test agent of Example 14.

  This Example 14 does not have a pesticidal component (medicine) in the outer layer, and corresponds to the second embodiment of the present invention described above.

Comparative Examples 1 and 2 are the same steps as the first half and the second half of the process of Example 1.
(Comparative Example 1)
(1) Into a heating and stirring apparatus, 1.0 g of diethyl toluamide (DET, trade name: Lipper DET, manufactured by Yoshitomi Fine Chemicals Co., Ltd.) and 10 g of glycerin are heated and stirred at about 60 ° C. (about 10 minutes).
(Liquid A)
(2) 89 g of zeolite (average diameter of about 800 μm) is placed in another stirring device, and the whole is stirred while adding solution A (about 10 minutes).

(Comparative Example 2)
97.28 g of silica powder (average diameter of about 17 μm), 0.15 g of piperonyl butoxide, 0.02 g of BHT and 0.25 g of n-paraffin (trade name: Neotisol) are stirred and mixed for about 15 minutes, and 2.3 g of insecticidal chrysanthemum powder And stirring and mixing for about 5 minutes.

The above-mentioned Examples and Comparative Examples were used as test agents to conduct efficacy tests and scatter tests.
(Efficacy test 1)
(Purpose) To evaluate whether the pest control agent according to the present invention shown in the Examples has excellent efficacy in both rapid action and sustainability.
(Test insects) Ant ants (collected from the field)
(Test method) There are three methods: forced contact method, long-time contact method, and area eviction method.

  The test results were as shown in Table 15 below.

  (Consideration) It was confirmed that the pest control agent according to the invention of the present application has a fast effect equivalent to or better than that of a powder and a durability equivalent to or better than that of a granule and has an excellent effect.

(Efficacy test 2)
(Purpose) It is confirmed whether the pest control agent according to the present invention has an excellent effect on various pests.
(Test insects) Ruriari ants, Japanese whale ants, Okadamushi, Warabimushi (collected from the field)
(Test method) Forced contact method and area eviction method.

  The test results were as shown in Table 16 below.

  (Discussion) Excellent efficacy against all target pests.

(Efficacy test 3)
(Purpose) To evaluate how effective the outer layer is in the case of only calcium carbonate powder containing no effective biological control component.
(Test insects) Ant ants (collected from the field)
(Test method) There are three methods: forced contact method, long-time contact method, and area eviction method.

  The test results were as shown in Table 17 below.

  (Discussion) In the case where the outer layer is only calcium carbonate (inactive powder) containing no pesticidal component, it was judged that it was effective to some extent.

(Dancing test)
(Objective) To evaluate whether the pest control agent according to the present invention shown in Example 1 is superior in terms of scattering compared to the commercially available powder shown in Comparative Example 2.
(Test method) Evaluation was performed using the test apparatus shown in FIG.

  The test results were as shown in Table 18 below.

  (Consideration) The pest control agent according to the present invention shown in Example 1 was superior to the powder of Comparative Example 2 in terms of scattering.

Next, the above-described efficacy test method will be described.
(Forced contact method)
As shown in FIG. 11 (a), 0.5 g of each test agent 41 (each example) was placed in a polycup (plastic transparent container) 40 having an inner diameter of 9 cm (height: 4.5 cm). Ten test insects 42 were placed in As shown in FIG. 11 (b), the lid 43 is closed, the polycup is vibrated several times back and forth, left and right, and each test agent 41 is uniformly attached to the entire body of the test insect 42. I put it.
Thereafter, as shown in FIG. 11 (c), the test worm 42 is immediately transferred from the polycup 40 onto the sieve (14 mesh) 44, and the excess powder (test agent) 41 is screened off, as shown in FIG. 11 (d). As shown, the test worm 42 was transferred to a glass deep petri dish (inner diameter 8 cm, height 6 cm) 45.

The number of knockdown insects was counted over time by observing the glass bottom petri dish 45 described above, and the KT ₅₀ value was determined using Bliss' Probit method.
The test was repeated three times to obtain an average value.

(Long contact method)
As shown in FIG. 12 (a), each test agent 51 was uniformly sprayed on the bottom of a glass petri dish 50 having an inner diameter of 9 cm (height 1.5 cm) using a 1.0 g sieve.
As shown in FIG. 12 (b), a nylon net (14 mesh) (12 cm × 12 cm) is formed on one opening surface of a glass deep ring 52 having an inner diameter of 8 cm (height 6 cm) with thinly coated petrolatum on the inner wall surface. 53 is affixed and placed in a glass petri dish 50 with the net side down. Vaseline is applied to prevent the escape of test insects during observation.
As shown in FIG. 12 (c), 10 test insects 54 were gently put into the glass deep ring 52.
As shown in FIG. 12 (d), the number of knockdown insects was counted over time immediately after the test insects 54 were introduced, and the KT ₅₀ value was determined using Bliss's Probit method.
The test was repeated three times to obtain an average value.

Thus, by sandwiching the nylon net 53 between the test insect 54 and the test agent 51, it is possible to avoid the test insect 54 from coming into direct contact with the test agent and to be closer to the actual situation. This is an assumed test.
In other words, when actually spraying the control agent outdoors, there is a whisper, so the pests are not in contact with the control agent all the time. A similar state can be obtained.

(Area eviction method)
As shown in FIG. 13 (a), each test agent 61 is uniformly sprayed on the left half of a filter paper (Toyo filter paper 5A) 60 having a diameter of 11 cm using a 1.0 g sieve to form a treatment zone 60a. The right half surface which does not process 61 was made into the no-process area 60b.
As shown in FIG. 13 (b), a nylon net (14 mesh) (12 cm × 12 cm) 62 is placed on the glass, and an inner diameter of 8 cm (height 6 cm) is applied to the inner wall surface. A deep ring 63 was placed, and this was used as a treatment group.

Although illustration is omitted, in addition to the treatment group described above, considering the bias of the test insect due to microclimate such as air conditioner wind, the nylon net and An untreated group with a glass-made deep ring was provided, and both groups were arranged side by side on a test bench.
As shown in FIG. 13 (c), 50 test insects 64 were gently put into the glass deep rings of both groups, and immediately after that, as shown in FIGS. 14 (a) and 14 (b). The number of insects staying on the left half surface (treated area) 60a and the right half surface (untreated area) 60b of the filter paper 60 of each group was counted, and the repelling rate was calculated by the following mathematical formula 1.

For each example and comparative example, the following two types of samples were used.
(A) Immediately after compounding Sample immediately after compounding (b) Outdoor 1 month Sample collected after being left for 1 month in a place with rain protection outdoors.

  Since this test also has a nylon net sandwiched between the test insect 63 and the test agent 61, this test is assumed to be closer to the actual situation.

It is a typical explanatory view showing a 1st embodiment of the present invention. It is a graph which shows the diameter of an internal solid agent, and the sustainability of an effect. It is a graph which shows the relationship between the diameter of an internal solid agent, and the rapid effect of an external solid agent. It is a graph which shows the relationship between the diameter of an external solid agent, and rapid effect. It is a graph which shows the relationship between the amount of binders and the amount of adhesion with respect to a peanut. It is a graph which shows the relationship between the amount of binding agents and adhesion amount with respect to a sticky leaf. It is a graph which shows the relationship between the amount of binding agents with respect to German cockroaches, and the adhesion amount. It is a perspective view of a scattering test apparatus. It is a chart which shows the relationship between the amount of binding agents and the scattering time. It is typical explanatory drawing which shows the 2nd Embodiment of this invention. It is explanatory drawing of a forced contact method. It is explanatory drawing of a long-time contact method. It is explanatory drawing of the area eviction method. It is explanatory drawing of the area eviction method.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Inner layer, 11 ... Solid carrier, 12 ... Pest control component, 13 ... Internal solid agent, 20 ... Outer layer, 21 ... Solid carrier, 22 ... Pest control component, 23 ... External solid agent, 24 ... Inactive powder agent.

Claims (6)

A plurality of external solid agents 23 carrying a pesticidal component and carrying a pesticidal component on the surface of the internal solid agent 13 excellent in sustainability and excellent in rapid action are binders of glycerin or polyethylene glycol. as a pest control agent, characterized in that attached to peeling by contact with the pest. The internal solid agent 13 is supported on the solid carrier 11 in an impregnated state with a pest control component,
The pest control agent according to claim 1, wherein the external solid agent is carried in a state in which a pest control component is attached to the surface portion of the solid carrier. The diameter of the external solid agent 23 is smaller than the diameter of the internal solid agent 13,
The lower limit value of the diameter of the internal solid agent 13 is 400 μm, the upper limit value is smaller than the body length of the target pest, and larger than half the body length,
The pest control agent according to claim 1 or 2, wherein a lower limit value of the diameter of the external solid agent 23 is 1 µm and an upper limit value is 100 µm.   The pesticidal agent according to claim 1, wherein the internal solid agent 13 carries a highly persistent pesticidal component, and the external solid agent 23 carries a highly effective pesticidal component. The pest control agent according to claim 4 , wherein the pest control component having a high persistence is an insecticide or a pest repellent, and the fast-acting pest control agent is an insecticide. A plurality of inert powders 24 having a diameter of 100 μm or less that do not carry a pest control agent are peeled off by contact with pests on the surface of the internal solid agent 13 that carries a pest control component and has excellent durability. Adhere,
The pest control agent, wherein the inert powder is a powder of calcium carbonate, diatomaceous earth, silica gel, magnesium oxide, aluminum oxide, or activated clay.

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