JPH0694414B2 - Ant repellent - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a termite repellent used for the prevention, control, and soil treatment of termites.

[0002]

2. Description of the Related Art As an anti-termite agent, organochlorine agents represented by chlordane and organophosphorus agents represented by dieldrin have been conventionally used. Of these, organochlorine agents such as chlordane do not have a large effect on the human body, so they can be adequately treated and their effects have been guaranteed for 10 years, but they are used because they may infiltrate groundwater or soil and cause contamination. It has been canceled. Although the effects of organophosphorus drugs such as dieldrin are guaranteed for 5 years, they are easily decomposed, and the duration of the effect is actually shorter than 5 years, and toxicity is suspected. On the other hand, arsenous acid and boric acid compounds are used as inorganic termite repellents, but arsenous acid is a highly toxic substance and may cause effects on the human body. There was a flaw. Therefore, powders that are long-lasting and safe are still desired.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, is highly safe, and gradually releases the medicinal component over a long term in a termite survival environment to prevent termite feeding damage. The present invention has been made in order to provide an anti-termite agent which can be manufactured at a lower cost than conventional termite-control agents.

[0004]

The termite control agent of the present invention, which has been made to solve the above-mentioned problems, is composed of borosilicate glass based on boron oxide and silica, and has a particle size of 1 to 150 μm. And the elution rate of B ₂ O ₃ in pure water at 20 ° C. is 10 mg / g / Hr to 5000 mg / g / Hr.

As described above, the termite control agent of the present invention comprises fine particles of borosilicate glass. Borosilicate glass is B ₂
It is a general term for glass mainly composed of O ₃ and SiO ₂ , but in the present invention, B ₂ O ₃ 40 to 80 mol%, SiO ₂ 10 to 40 mol%, alkali oxide 0 to 20 mol%, and alkaline earth. Oxides 0 to 20
Borosilicate glass having a composition of mol% and Al ₂ O ₃ 0 to 10 mol% is preferable. Here B ₂ O ₃ is insufficient elution amount of B ₂ O ₃ as an active ingredient is less than 40 mol%, B ₂ O ₃ and greater than 80 mole%
Is likely to flow out and harden due to moisture. If the amount of SiO ₂ is less than 10 mol%, it tends to flow out, and if it is more than 40 mol%, the amount of B ₂ O ₃ eluted is insufficient. If the amount of alkali oxide is more than 20 mol%, it will be hardened by water and hard to be carried to termite nests. If the alkaline earth oxides and Al ₂ O ₃ are more than this, the elution amount of B ₂ O ₃ will be insufficient and the effect will be reduced.

The termite control agent of the present invention uses the above borosilicate glass as fine particles having a particle size of 1 to 150 μm. Here, if the particle size is smaller than 1 μm, it tends to harden,
If it is larger than μm, it will be difficult for termites to be held in the mouth and carried to the nest, and it will be difficult to wipe out the nest.

The termite control agent of the present invention contains B ₂ O ₃ as an active ingredient, which is gradually eluted from fine particles of borosilicate glass in a termite survival environment. In the present invention, the elution rate of B ₂ O ₃ is 10 mg / g / Hr to 5000 mg / g / Hr. This B ₂ O ₃
The dissolution rate of borosilicate was as follows: borosilicate glass fine particles with a particle size of 1 to 150 μm were immersed in pure water at 20 ° C.
It was expressed as the amount of B ₂ O ₃ eluted (mg). If the elution rate is lower than this, the potency is insufficient, and if it is higher than this, it tends to harden and cannot be carried to the nest. Further, in the present invention, the equilibrium water absorption rate of glass at a temperature of 30 ° C. and a humidity of 90% at which termites are most active is 10%.
% Or less is preferable. Equilibrium moisture absorption rate is 10
If it exceeds%, it tends to harden.

Among the compositions of borosilicate glass, those having a high content ratio of B ₂ O ₃ and alkali oxides include silane coupling agents, solid paraffin, and solid paraffin in order to prevent solidification due to water.
Liquid paraffin, metallic soap, silicone oil or the like is preferably coated on the surface of the fine particles.

Since the borosilicate glass itself has no termite-inducing action, it is preferable to add a pine resin extract component, β-pinene, turpentine oil, abiethylene acid or the like. Furthermore, when the termite control agent of the present invention is applied to wood or the like, it is easily peeled off by simply spraying it. So PVA glue,
It is preferable to mix a small amount of CMC glue, urethane emulsion paint, acrylic emulsion paint, etc. as a binder.

The borosilicate glass of the present invention is used in a large amount of scrap glass (cullet) of soda lime glass, which is widely used as bottle glass, etc., in addition to boric acid components such as B ₂ O ₃ and Na ₂ B ₄ O _7. it can also be prepared by melt mixing the boron sand formation <br/> min. If this method is adopted, not only the cost can be reduced, but also the cullet can be reused, which is preferable from the viewpoint of environmental protection. In particular, even in soda lime glass, a mixture of differently colored glass and a mixture of different kinds of glass compositions are difficult for the glass industry to process because they are difficult to reuse as glass raw materials, but they are used as raw materials of the present invention. If this is done, it can be effectively used.

[0011]

Since the termite control agent of the present invention is a fine powder of borosilicate glass, it is unlikely to flow out with water, and is highly safe for the human body. Furthermore, since B ₂ O ₃ which is an anti-termite component can be gradually eluted over a long period of time, it is possible to prevent feeding damage of termites for several years or longer. When the termites ingesting the termite control agent of the present invention become aware of the deterioration of the physical condition, they return to the nest by homing instinct and then die on their back, but other termites will get the termite control agent attached to the termites by the time they reach there. Eliminate and eat by cleaning instinct. Moreover, since the excrement and carcass of the termite itself are also eaten, the termites that eat them will die again, and it is expected that the entire nest will be killed.

[0012]

EXAMPLES Examples of the present invention will be shown below. [Example 1] 1 g of tissue paper was spread in a petri dish having a diameter of 90 mm and a depth of 15 mm to impregnate 1 mL of water. Nine kinds of chemicals described below were placed in the four corners of this petri dish, and 26 termite ants and 2 termite termites were placed in the petri dish and left in a dark room at 25 ° C to observe the mortality rate over time. In order to prevent death due to drying, 0.5 mL of water was replenished every two days.

The drugs used are as follows. The results are shown in Table 1. Blank borosilicate glass powder (average particle size 15μm), boron elution rate 0.
Less than 1 mg / g / Hr SiO ₂ 80 mol%, B ₂ O ₃ 10 mol%, Na ₂ O 5 mol%, Ca
O 5 mol% termite control agent A (average particle size 15 μm), boron elution rate 67 mg / g /
Hr B ₂ O ₃ 60 mol%, SiO ₂ 20 mol%, Na ₂ O 10 mol%, Ca
O 10 mol% Anti-termite B (average particle size 260 μm), boron elution rate 4 mg / g
/ Hr B ₂ O ₃ 60 mol%, SiO ₂ 20 mol%, Na ₂ O 10 mol%, Ca
O 10 mol% Anti-termite agent C (average particle size 15 μm, waterproof product), boron elution rate 2800 mg / g / Hr B ₂ O ₃ 70 mol%, SiO ₂ 20 mol%, Na ₂ O 10 mol% borosilicate Glass was wet-milled with a ball mill, and 49.9 parts of it were waterproofed by adding 49.9 parts of ether, 0.1 part of ethanol and 0.1 part of γ-glycidoxypropylmethoxysilane. Termite-proof agent D Boron elution rate 6700 mg / g / Hr Termite-proof agent C with the same particle size and composition but without waterproof treatment. Termite control agent E (average particle size 15 μm, treated with attractant), boron elution rate 42 mg / g / Hr Termite control agent A contains β-pinene dissolved in benzene at 4000 ppm
Formulated in addition. Anti-termite F (average particle size 15 μm), boron elution rate 20 mg / g
/ Hr Na ₂ B ₄ O ₇ 2 parts by weight were melted, 1 part by weight of soda lime cullet was gradually mixed and melted, and pulverized. Boric acid (average particle size 60 μm), B ₂ O ₃ elution rate 9300 mg / g / H
r

[0014]

[Table 1]

Example 2 The termite control agent A and boric acid of Example 1 were each diluted with an aqueous paint (acrylic emulsion) 1 /
20% of 100 was mixed, about 10 g / m ^{2 was} applied to a piece of red pine and dried in air. Then, an ant resistance test of the Japan Wood Preservation Association Standard No. 11 was carried out to determine the mortality rate after 3 weeks. The weatherproof operation is
Immersion in water for 30 seconds and leaving at 40 ° C. for 20 hours were repeated 10 times. As a result, the termite control agent A had a mortality rate of 100% regardless of the presence or absence of weathering operation, while boric acid had a mortality rate of 100% without weathering operation and 64% with weathering operation. In addition, the weight loss rate (damage) of Akamatsu pieces is 4% when untreated, the termiticide A is 0.4% with or without weathering operation, and the boric acid is 0.3% without weathering operation.
%, And 1.2% with weatherproof operation.

Example 3 To 1 of the termite control agent A of Example 1, 0.01 of a benzene solution containing 0.001 of β-pinene was blended by a spray dryer method. When 500 g of this was sprayed around the nests of the termites on the roadside tree and observed two months later, it was confirmed that the activity of the nests was significantly reduced.

[0017]

As described above, the termite control agent of the present invention is highly safe because it is composed of fine particles of borosilicate glass, and gradually releases the medicinal component over a long period in the termite survival environment. Thus, the feeding damage of termites can be sufficiently prevented. Moreover, the termite control agent of the present invention has an advantage that it can be manufactured at a lower cost than conventional termite control agents by utilizing soda lime glass waste.

Claims (5)

[Claims] 1. Fine particles of borosilicate glass based on boron oxide and silica, having a particle size of 1 to 150 μm.
The elution rate of B ₂ O ₃ in pure water at 20 ° C is 10 mg / g / Hr ~ 50
An anti-termite agent characterized by being 00 mg / g / Hr. 2. The termite control agent according to claim 1, wherein the surface is coated with a waterproofing agent. 3. The ant control agent according to claim 1, further comprising an ant inducer. 4. The termite control agent according to claim 1, further comprising a binder. 5. A termiticide of claim 1, wherein in that the borosilicate glass by melt mixing components of boric acid or boric sand soda lime cullet.