JPH0717805A - Roof rat and cockroach repellent material - Google Patents

Abstract

PURPOSE:To provide a repellent material keeping long lasting olfactory repellent action for the roof rats and the cockroaches. CONSTITUTION:As an olfactory repellent, 50 parts by weight of peppermint oil, 50 parts by weight of camphor together with 5 parts by weight of BHA as a stabilizer are dissolved with 100 parts by weight of DOP as solvent, and 50g of the above solution is soaked into two pieces of an urethane foam 1 as carrier. A repellent material is made first by placing a baffle board between the piled two pieces of the above urethane foam, and then putting them together into a polyethylene bag 3, having a open hole 4 made on top of the bag.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repellent for rats and cockroaches, and more particularly to a repellent for rats and cockroaches under a double floor of a building or the like.

[0002]

2. Description of the Related Art In recent years, computer cables and the like are congested and wired under the floor of high-tech buildings and the like. These underfloors are air-conditioned and are a good place for mice, cockroaches, etc. For this reason, it is not only unsanitary, but these small animals bite the wiring and cause a short circuit, or small cockroaches are caught in the contacts of the contactor that sends current to the motor of the air blower circuit such as an air conditioner, causing contact failure. Due to the frequent occurrence of damage such as, the development of repellent materials for domestic mice and cockroaches is urgently needed.

Conventionally, creosote oil has been used as a repellent against rodents, cockroaches, termites, etc. that live outdoors in forests and the like, but creosote oil has a strong pungent odor and is used under the floor, especially under the floor of high-tech buildings and the like. Not applicable to use as. Recently, as a repellent against house mice such as Mus musculus, black rat, brown rat, etc. and cockroaches that live indoors, cycloheximide or a taste repellent containing microcapsule of capsaicin, which is a spicy ingredient of pepper, has been used.

[0004] A taste repellent in which the spiciness component of cycloheximide or chili pepper is microencapsulated is used by being kneaded in a resin to coat an electric wire, etc., so that a rodent that does not bite the electric wire does not continue to bite. It is said that the effect is due to taste, and it is limited to the rats that bit the electric wire, and there is no effect to wipe out a large number of the mice from the underfloor such as high-tech buildings. In addition, it is expensive because it is microencapsulated.

[0005]

DISCLOSURE OF THE INVENTION The present inventors have studied the above-mentioned conventional repellents, and as a result, use olfactory repellents as repellents for mice and cockroaches used under the double floor of buildings and the like. I thought about it.

On the other hand, Article 4-3 of the Enforcement Regulations of the Act on Ensuring Hygienic Environment in Buildings of the Ministry of Construction (Cleaning and control of rats, insects, etc.) In addition to cleaning, cleaning and control of mice, insects, etc. must be carried out once every 6 months, on a regular basis, in a unified manner. " It is desirable to let

[0007] Generally, however, those used as olfactory repellents are easily vaporized or sublimated, and the effective airborne concentration can be kept for at most about 3 months. Furthermore, the effective aerial concentration is the aerial concentration at which mice or cockroaches cannot approach due to the olfactory repellent, and it is 1 μg / m ³ or more for the rodents and 0.5 μg / m ³ or more for the cockroaches from the experiments described later. Further, when a large amount of the olfactory repellent is used, the effective airborne concentration can be maintained for more than 3 months, but there is a drawback that the initial effective airborne concentration becomes too high and the odor is strong and not preferable for humans.

[0008] As a result of various studies on the repellents for rats and cockroaches which are used under the double-floor of a building or the like using an olfactory repellent, the present invention can control the release of the olfactory repellent for a long time. It is to provide a repellent material that can sustain the effect.

[0009]

The present invention is non-leakable,
And, in a case having an opening in a part thereof, an open cell type urethane foam (hereinafter simply referred to as a urethane foam) is used as a carrier, and the olfactory repellent is impregnated into the case, and a part of the urethane foam layer is formed. , Olfactory repellent A repellent used for domestic mice and cockroaches in which an impermeable baffle is interposed.

The olfactory repellent used in the present invention is white oil, camphor, etc., and the olfactory repellent is reduced by heating (JIS-K675.
1 Based on the measuring method of "Testing methods for phthalates")
DOP, DHP, DBP, DMP, DE
It is used after being dissolved or dispersed in a solvent such as P or DOA. At that time, a stabilizer such as butylhydroxyanisole (BHA) or a surfactant such as amino alcohol may be used.

The urethane foam used as a carrier in the present invention is preferably of the open-cell type because it needs to be impregnated with an olfactory repellent. In this case, it is important to retain the impregnated olfactory repellent solution, and it is preferable that the number of cells having a mirror is 25 cells / inch or more in terms of capillary phenomenon. Although closed-cell type urethane foam cannot be used, it may have some closed cells, but the impregnation rate of the repellent solution decreases as the proportion of closed cells increases.

The non-leakage case in the present invention is used because the liquid olfactory repellent does not leak,
A bag made of synthetic resin, a box-shaped or cylindrical shape, a glass bottle, or the like can be used, and an opening that can be opened at the time of use is provided. The size of the opening varies depending on the wind speed under the double floor, the atmosphere, the temperature, and other conditions of the building, but is generally about 1 to 25 cm ² , and if smaller than this, vaporization or depending on the wind speed may occur. The sublimation balance may be lost.

That is, the present inventors have made the size of the opening 4 cm ²
And the two 16cm ^2, the results of investigation for six months comparison by weight loss repellents in the same other conditions, so that no significant difference was confirmed size of the opening is 1~25c
m ^2, preferably a 4~16cm ^2. The number of openings may be one, but a plurality of openings may be formed if necessary. Even in this case, the total size of the plurality of openings is preferably 25 cm ² or less.

The baffle intervening in the urethane foam is a polyethylene film, polypropylene film or the like that can prevent vaporization and sublimation of the olfactory repellent. The thickness, size, number and the like of the baffle plates may be appropriately determined in consideration of the amount of urethane foam, the olfactory repellent and the like or the intended use.

Further, the baffle plate can be attached by appropriately forming slits in a single urethane foam and inserting the baffle plate in the slits, or by laminating a plurality of urethane foam layers and sandwiching between them.

[0016]

The present invention is constituted as described above, and the olfactory repellent impregnated in the urethane foam as a carrier in the non-leakable case is vaporized or sublimated from the opening formed in the case. However, since the amount of vaporization or sublimation by the baffle intervening in the urethane foam is controlled to an appropriate amount, the effective air concentration of the olfactory repellent can be maintained for a long period of time.

[0017]

The present invention will be specifically described below with reference to the examples of the present invention. Example 1 As shown in FIG. 1, urethane foam 1 (manufactured by Inoac Corporation, trade name SC; thickness 9 mm, length 100 mm, width
100mm) 2 pieces as a carrier, and 50 parts by weight of lightly-oiled white oil, 50 parts by weight of camphor, BHA5 as a stabilizer.
50 g of a solution prepared by dissolving 100 parts by weight of DOP in a solvent of 100 parts by weight was uniformly impregnated.

A baffle plate 2 (thickness: 35 μm, length: 33 mm, width: 100 mm polypropylene sheet) is inserted approximately in the middle between the two urethane foams 1 stacked, and the polyethylene bag 3 ( Thickness 35μm, width 118mm, length 140m
m), and an opening 4 of 4 cm ² was formed on the upper surface of the bag 3.

Using the repellent material of Example 1, the following experiment was conducted on mice. [Experiment on mouse] Along the four outer walls of the laboratory of 18 x 27 m, the aluminum grating (size: 500 x 250 x 35 mm) and the border (size; Double floor material with a floor height of 100 mm (Nitto Boseki Co., Ltd., product name DD floor A type; size 500 x 500 mm) outside each containing a pair of 500 x 250 x 25 mm)
Was carried out in the laboratory where it was constructed.

From the repellent material, the repellent material of Example 1 was placed under the double floor in the center of a laboratory that was air-conditioned at 25 ± 3 ° C.
Vaporized gas under the double floor is sampled from the notch (85 x 85 mm) at a distance of 1 m, and when the airborne concentration approaches 1 μg / m ³ at this location, the repellent material becomes the center of the cross shape. Place several solid feeds at 1m intervals (the water dispenser is placed in one corner),
Ten mice were left under the double bed and observed for about 6 weeks.

As a result, up to an air concentration of 1 μg / m ³ or more, 5 m squares were obtained from the state of the above-mentioned solid feed placed at 1 m intervals in a cross shape centered around the repellent material placed under the double floor and the place of feces. It was found that the mouse was not close to the mouse. That is, the effective aerial concentration of the olfactory repellent against mice is 1 μg / m ³
From the above, it was found that even if the bait was placed close to it, the house rats could not approach the 5m square.

The reason why the gas sampling is performed from under the double floor 1 m away from the repellent material is that the gas analysis under the double floor 5 m square away from the repellent material causes a large variation and reproducibility is difficult. is there. From the same experiment, it was found that the effective airborne concentration of the olfactory repellent against cockroaches could not approach the 6m square if it was 0.5 μg / m ³ or more.

Example 2 As shown in FIG. 2 (in FIG. 2, the same reference numerals as those in FIG. 1 indicate the same members, the same applies hereinafter), the urethane foam impregnated with the same olfactory repellent solution as in Example 1 was used. 5 (18 mm thick,
The same as Example 1 except that the slit 6 was inserted from the side surface of the length and width are the same as those in Example 1 and the same baffle plate 2 as in Example 1 was inserted into the slit 6 at approximately the center.

Example 3 As shown in FIG. 3, the urethane foam 7 (thickness 6 mm, length and width is the same as in Example 1) impregnated with the same olfactory repellent solution as in Example 1 was placed on the upper side, and the same. The same procedure as in Example 1 was performed except that the treated urethane foam 8 (thickness 12 mm, length and width was the same as in Example 1) was laminated downward, and the same baffle plate 2 as in Example 1 was placed approximately in the middle. .

Example 4 Similar to Example 3, except that urethane foams 7 (thickness: 6 mm) and 8 (thickness: 12 mm) treated in the same manner as in Example 3 were reversely stacked as shown in FIG. .

Example 5 As shown in FIG. 5, three urethane foams 7 (thickness: 6 mm) treated in the same manner as in Example 3 were overlaid, and the example was placed approximately in the center between the upper and middle urethane foams 7. The same procedure as in Example 1 was performed except that the same baffle plate 2 as 1 was sandwiched, and the same baffle plate 2 was sandwiched between both ends of the urethane foam 7 treated in the same manner as described above in the middle and lower stages.

Example 6 As shown in FIG. 6, the positions of the baffle plates 2 of Example 5 are reversed, and the baffle plates 2 are sandwiched between the upper and middle urethane foams 7, respectively, and the middle and lower urethane foams are further sandwiched. The same procedure as in Example 1 was carried out except that it was sandwiched in the substantially central portion between No. 7 and 7.

Example 7 As shown in FIG. 7, three urethane foams 7 (thickness: 6 mm) treated in the same manner as in Example 3 were stacked, and the urethane foam 7 at the one end between the upper and middle polyurethane foams 7 A baffle plate 9 (50 mm in length, thickness, width is the same as in Example 1) similar to that of No. 1 is sandwiched,
Further, the same procedure as in Example 1 was carried out except that the same baffle plate 9 was sandwiched between the other ends of the urethane foam 7 in the middle and lower stages.

Comparative Example A urethane foam was uniformly impregnated with a solution in which the same odor repellent as in Example 1 was dissolved except that the baffle plate of Example 1 was not used.

Next, the repellent materials obtained in Examples 1 to 7 and Comparative Example were respectively tested in the laboratory where the [Experiment on mouse] was conducted.

[Test] The repellent materials obtained in Examples 1 to 7 and Comparative Example were stored under the floor of the next room which was air-conditioned at 25 ± 3 ° C. as in the above experiment, and these were taken out respectively for the experiment. Place it under the floor in the center of the room, leave it for 24 hours, then
The vaporized gas under the double bed was sampled from the notch (85 x 85 mm) at a distance of 1 m, and the concentration in the air was measured by a gas chromatograph. The measurement was performed every month, and every half month after the concentration in the air was close to 1 μg / m ³ . After each measurement, each repellent material was returned to the adjacent room and stored until the next measurement. The results of these tests are shown in Table 1.

[0032]

[Table 1]

As is clear from the results of Table 1, in each of the examples of the present invention, the duration of the olfactory repellant was increased by 1.5 times or more as compared with the comparative example. In particular, in Example 5 and Example 6, the construction rule Article 4-3 of the Ministry of Construction for ensuring a hygienic environment in the building was sufficiently satisfied.

[0034]

INDUSTRIAL APPLICABILITY As described above, the present invention is a repellent material comprising polyurethane as a carrier, impregnated with the olfactory repellent, and further interposing a baffle in the polyurethane, wherein the olfactory repellent is vaporized. Alternatively, the sublimation rate can be controlled, and thus the effective airborne concentration of the olfactory repellent can be maintained for a long period of time.

Therefore, by arranging under a double floor such as high-tech building, small animals such as mice and cockroaches, pests, etc. can be cleaned up, and damage to high-tech equipment can be greatly reduced. In addition, since it can wipe out the mice and cockroaches, it is extremely excellent in hygiene management.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a second embodiment of the present invention.

FIG. 3 is a schematic sectional view of a third embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of Embodiment 4 of the present invention.

FIG. 5 is a schematic cross-sectional view of Example 5 of the present invention.

FIG. 6 is a schematic cross-sectional view of Embodiment 6 of the present invention.

FIG. 7 is a schematic cross-sectional view of Embodiment 7 of the present invention.

[Explanation of symbols]

 1, 5, 7, 8: Urethane foam 2, 9: Baffle plate 3: Polyethylene bag 4: Opening part 6: Slit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Shimizu 323-12 Sakuragi-cho, Wakaba-ku, Chiba-shi, Chiba Prefecture (72) Kosaburo Inoue 1-8-20-107 Higashibayashi, Sagamihara-shi, Kanagawa

Claims (1)

[Claims] 1. A non-leakable case, which has an open part in its case, is made of an open-cell urethane foam, which is impregnated with an olfactory repellent, and the urethane foam is A repellent material for mice and cockroaches, characterized in that an olfactory repellent impermeable baffle is interposed in the part.