JP2858132B2 - Insect repellent for textiles - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insect repellent for textiles such as clothing used in clothes dance and costume cases.

[Conventional technology]

Hitherto, sublimable paradichlorobenzene, naphthalene, camphor and the like have been widely used as insect repellents for textiles such as clothing. However, although paradichlorobenzene has a high insect repellent effect, it tends to be regulated because it has a strong odor and may cause harm to living organisms. Other than paradichlorobenzene, the insect repellent effect is low.

On the other hand, volatile pyrethroid-based liquid insect repellents have been increasingly used because they have high insecticidal effects and do not give off odor to clothing. However, there is a drawback that it is poor in volatility and takes time for the effect to appear.

Therefore, a method has been proposed in which these sublimable and volatile insect repellents are combined to make use of their respective advantages and to compensate for each other's drawbacks.

However, even if the volatile and sublimable insect repellents are combined, all of the conventional ones have some disadvantages depending on the selection of the raw material and the manner of construction.

In other words, the volatile insect repellent itself does not have a strong odor, but depending on how the sublimable insect repellent is selected, the latter strong odor may be transferred to clothes, or conversely, the odor is not so strong, but it is expensive as an insect repellent. In some cases, too much or when one of the volatile or sublimable insect repellents disappears first, even if the other remains, the efficacy as an insect repellent is drastically reduced and it becomes useless.

[Problems to be solved by the invention]

Accordingly, an object of the present invention is to provide an insect repellent which completely eliminates the above-mentioned disadvantages.

Further, the present invention aims to provide a practically excellent insect repellent in which the end of the effect can be confirmed visually and the time for replacement is not missed.

[Means for solving the problem]

In order to achieve the above object, the inventor conducted many experiments on various volatile substances and sublimable substances, and as a result of intensive research on how to construct both raw materials,
The following configuration was adopted.

That is, the present invention comprises a combination of a volatile substance, empensulin, and a sublimable substance, cyclohexanone / oxime, and the weight ratio of the combination of empensin and cyclohexanone / oxime is 1:10.
From 1:30 to 1:30.

Empensulin has a high insecticidal effect and a low odor, so it does not leave scents on clothes, but has low volatility at room temperature and is inferior in initial insect repellency.

Cyclohexanone oxime does not have a strong odor such as paradichlorobenzene, naphthalene or camphor, has a slight chemical odor, but is not an unpleasant odor and does not have a scent to clothes. In addition, the insecticidal activity is weaker than that of camphor, but it has a vapor pressure of about 10 times that of empensrin at around normal temperature, and the repellent effect against fiber pests alone is high.

It has been found that when the above two substances are combined, a high insecticidal effect can be obtained due to the synergistic effect thereof, the effect appears quickly, the odor is weak, and the odor is transferred to the clothes and no scent remains.

Since the weight ratio of empensulin and cyclohexanone oxime constituting the present invention is between 1:10 and 1:30, it is easy to equally adjust the disappearance time of both.

The cyclohexanone oxime as a carrier may contain a mild-temperature fungicide such as a lower ester of para-hydroxybenzoic acid, imidazole, cinamic acid, dehydroacetic acid, benzoic acid, vanillin, etc. Of these, the lower esters of para-hydroxybenzoic acid are preferred.

〔The invention's effect〕

Since the present invention is configured as described above, a high insecticidal effect can be obtained by a synergistic effect of a high insecticidal effect of empensulin and a high vapor pressure of cyclohexanone oxime.

Also, cyclohexanone oxime has a sufficient vapor pressure to repel fiber pests even at room temperature, so that it compensates for the initial insect repellent effect of empensulin and quickly exhibits an insect repellent effect.

In addition, both empensulin and cyclohexanone oxime have a low odor and transfer to clothes, leaving no incense.

In addition, by using expensive emensulin in combination with inexpensive cyclohexanone oxime, the required amount of empensrin due to their synergistic action is much smaller than using only empensrin alone, and it is inexpensive as an insect repellent itself. Can be provided.

Also, by appropriately selecting the weight ratio of the two substances between 1:10 and 1:30, their disappearance times can be made substantially equal. Furthermore, since the end of the efficacy can be surely confirmed by visually observing the disappearance of the solid cyclohexanone oxime,
It is a practically superior thing that does not miss the time to replace it.

In addition, although empensulin has no fungicidal effect at all, it can impart a fungicidal effect to the insect repellent of the present invention by blending an odorless and solid fungicide with cyclohexanone / oxime used as a carrier. .

Furthermore, it can be safely used as an insect repellent without affecting plastics such as styrene and polyethylene, gold and silver threads.

〔Example〕

Next, the insect repellent according to the present invention will be described in more detail with reference to the following examples.

(Experiment 1) At the bottom of one jar,
Piceus Oliv.) Release 10 larvae, impregnate a 3.5 cm square non-woven fabric with empensine at a height of about 10 cm above the larva, place a powdered cyclohexanone oxime on it and seal it tightly. Placed in a room at ~ 25 ° C and left. Three hours after fumigation, the larvae of Agaricus blazei were taken out into a petri dish and observed, and those that actively moved in a natural state were produced. The observation results are shown in Table 1.

In the table below, empensulin is ENP
And cyclohexanone oxime is abbreviated as CHO.

For comparison, Table 1 also shows the observation results in the case of empensin and cyclohexanone / oxime alone.

The above Experiment 1 shows that when empensulin and cyclohexanone oxime are used in combination, the effect of paralyzing the larvae of the beetle larva is dramatically increased as compared with the case where each is used alone.

(Experiment 2) A filter paper of 3.5 cm x 3.5 cm was impregnated with empensulin and powdered cyclohexanone oxime was spread on it.
Put it on the bottom of one jar and above it average weight 8.
Ten larvae of 1 mg of the beetle larva and a basket containing a wool cloth were fixed. Next, seal the bottle, temperature 25 ℃, humidity 65 ℃
After being allowed to stand in a thermo-hygrostat for 9 days, the larvae of Agaricus blazei were transferred to a small petri dish, allowed to stand in a natural state for 1 day, and the number of dead animals was counted to determine the insecticidal rate.

The test was performed three times, and the average value of the test results is shown in Table 2.

For comparison, Table 2 also shows the test results in the case where empensulin and cyclohexanone / oxime were used alone.

According to Experiment 2 described above, the combined use of empensulin and cyclohexanone oxime significantly enhances the insecticidal effect of the larvae of the cynoid beetle larvae compared to the case where each is used alone.

(Experiment 3) A potato dextrose agar medium was placed in a 9 cm diameter petri dish, and the mixture was added to Aspergillus niger.
r) is planted on three parallel lines (hereinafter, referred to as streaked parts), this petri dish is inverted, a fixed amount of the following compounding amount is placed on the opposing lid, and the whole is vinyl chloride. It was wrapped in a film made and left to stand in a thermostat at 28 ° C., and the bacteriostatic action of the vapor of the drug was observed.

 The test results are shown in Table 3.

In the following table, ethyl para-hydroxybenzoate is
Abbreviated as PHBE.

For comparison, Table 3 also shows the test results for cyclohexanone oxime, ethyl para-hydroxybenzoate, and empensulin alone.

According to Experiment 3 above, although empensulin had no antifungal activity at all, cyclohexanone oxime was found to have a bacteriostatic action against fungi. Furthermore, even if mixed with this cyclohexanone oxime, it does not liquefy, has no phenolic odor or pungent odor, and is capable of enhancing its antifungal power by blending with a colorless, room temperature solid antifungal agent / antibacterial agent. .

Next, one mode of use of the insect repellent according to the present invention will be described with reference to the drawings.

A plastic container (1) contains empensulin and cyclohexanone oxime, and has a through hole (2) so that the volatile gas and sublimation gas can flow out of the container.

Since empensulin is liquid at room temperature, it can be added to filter paper (3) in a volume of 0.1%.
Impregnated with 5 g, cyclohexanone oxime,
6.0 g is made into granules (4) and is wrapped in a gas-permeable packing material (5). A plastic window (6) is provided with a viewing window (6) so that the remaining amount can be visually recognized from the outside. I have. Therefore, the disappearance of cyclohexanone oxime can be visually recognized through the packaging material (5), and the insecticide may be replaced at that time. Further, since the filter paper (3) is impregnated with empensulin, there is no danger of clothing contamination due to liquid leakage.

In addition, if either one of empensulin and cyclohexanone oxime disappears first, a sufficient insect repellent effect cannot be obtained only by the remaining component, and a sufficient insect repellent effect can be obtained only by a synergistic effect of these two components. . Therefore, if the sublimation rate is adjusted by adjusting the size of the granules (4) of cyclohexanone / oxime and the gas permeability of the packaging material (5), the disappearing times of both can be made almost equal. Then, since the components of cyclohexanone oxime and empensrin disappear almost simultaneously, the insect repellent effect is maintained until both components are used up.

At this time, if the weight ratio of empensulin to cyclohexanone oxime is set between 1:10 and 1:30, the disappearing time of both can be easily adjusted, and the insect repellent has a sufficient practical insect repellent effect.

Further, for the purpose of imparting fungicidal and antibacterial properties, the cyclohexanone oxime is added to ethyl para-hydroxybenzoate.
0.7g may be blended.

[Brief description of the drawings]

The figure is a perspective view showing one mode of use in which the insect repellent for fibers according to the present invention is accommodated in a plastic container.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-54307 (JP, A) JP-A-59-42302 (JP, A) JP-A-63-72603 (JP, A) JP-A-62 33105 (JP, A) Fully open 1987-126303 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01N 53/00 A01N 25/18 CA (STN) REGISTRY (STN) WPIDS (STN)

Claims (3)

(57) [Claims] 1. The method according to claim 1, wherein empensin and cyclohexanone oxime are combined, and the weight ratio of the combination of emensulin and cyclohexanone oxime is between 1:10 and 1:30. Insect repellent for textiles. 2. The insect repellent for fibers according to claim 1, wherein said cyclohexanone oxime contains an antifungal agent which is a solid at room temperature. 3. The insect repellent for clothing according to claim 2, wherein the room temperature solid fungicide is a lower ester of para-hydroxybenzoic acid.