JP2000297004A - Tick repellent and insecticide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively carry out the extermination of house ticks inhabiting tatami mats in the house, carpets, wall clothes, bedclothes, clothes or the like by the use of a component harmless to men and beasts. SOLUTION: This house tick repellent is composed of pine resin or a mixture of pine resin and a spreader. The pine resin powder exerts strong tick repellent and insecticidal effects, inhibits the invasion of ticks from tick culture medium 4 shown in the figure to trap culture medium 5 in the proportion of about 90% within 24 hours and kills 39% of invaded ticks. On the spreader, a powder obtained by mixing one or more selected from calcium carbonate, calcium hydroxide, titanium oxide, zinc white or diatomaceous earth with a pine resin powder is used as a mixed powder or as a water-dispersed solution in combination with a surfactant or a thickener.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repellent and insecticide for mites, especially house dust mites and tsutsugamushi, and is a harmless component for controlling house dust mites that inhabit tatami, carpets, wall cloths, bedding, clothing, etc. in dwellings. And mite repellent and insecticide for effective and effective.

[0002]

2. Description of the Related Art In addition to ticks and tsutsugamushi, which suck on human blood, mites harmful to humans and animals are stinged indoors by house dust mites and house dust mites. . It is also known that dust mite (Dermatophagoides pteronyssinus) inhabits indoor dust and causes allergic dermatitis and bronchial asthma.

[0003] Conventionally, to eliminate these house dust mites, ME
Organic phosphorus agents such as P (Sumithion, trade name of Sumitomo Chemical Co., Ltd.) and PMP are used, but they lack sustainability and cannot be constantly sprayed indoors although they have low toxicity. House dust mites tend to parasitize where dust tends to accumulate, such as tatami mats and carpets, and many proposals have been made for insecticide treatment of tatami mats. For an old tatami mat, there is a method of inserting a thin pipe provided with a plurality of medicine ejection ports at a predetermined interval from the side of the tatami mat in a laid state and press-fitting a medicine (Japanese Patent Laid-Open No. 7-255345). Also, in the case of newly manufactured tatami mats, a method of spreading a tatami mat by laying Japanese paper, hemp cloth, cotton cloth, etc. impregnated with a tick insecticide on the upper surface or middle of the tatami floor (Japanese Patent Laid-Open No. 8-28006), There are various insect repellent sheets which are laid under, or inserted into, floor materials such as mats, tatami mats, etc.
02).

[0004]

DISCLOSURE OF THE INVENTION The present invention is not a synthetic product such as an organophosphorus agent, but is a natural product that repels mites.
Various studies have been conducted on substances that can be used as insecticides. The result is a completed one.

[0005]

That is, there is provided a mite repellent / pesticide comprising pine tar or a mixture of pine tar and a spreading agent. Pine tarnish is a powdered form of crude rosin that collects pine tar that has been damaged by pine tree trunks and flows out.Here, rubber rosin and pine oil, which is obtained by distilling turpentine oil from crude pine tar (tarpentin), are removed. Powders such as wood rosin from which turpentine oil has been removed are also included, and these are also useful as mite repellents and insecticides. The pine lump mass is conveniently used as a powder or an aqueous suspension.

[0006] When used, it is further mixed with a spreading agent. In the case of a powder, the spreading agent is preferably an inorganic powder such as calcium carbonate, calcium hydroxide, titanium oxide, zinc white, and silicate earth, and the mixing ratio to pine tar is 1: 0.1.
１ ： 1: 50, especially 1: 0.5〜1: 20. In the case of a liquid, a surfactant or a thickener for making an emulsion of pine tar is added to form a paste or emulsified with only these surfactants, or a thickener is used in combination with the surfactant. Liquid with a high viscosity. The surfactant may be any of a cation, a nonion, and an anion, and a nonionic surfactant is particularly preferable. As the thickener, a water-soluble polymer, for example, a polyvinyl alcohol type, a cellulose type or a polyacrylic acid type can be used. In this case, a silicone-based antifoaming agent may be added.

The pine tar can be used as a repellent and insecticidal sheet by dissolving in turpentine oil and impregnating paper or non-woven fabric, in addition to use in powder or emulsion. Also in this case, the above-mentioned inorganic spreading agent may be mixed. Further, it can be mixed with an adhesive and used for wall cloth upholstery, or can be kneaded into a resin of a synthetic resin wall cloth (polyvinyl chloride) or a carpet (polypropylene, etc.) to impart repellency and insect repellency to mites. It is also useful to impregnate the warp yarn for tatami surface weaving.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the mite repellent and insecticidal effects and the mite repellent and insecticide of the present invention will be specifically described. The repellent / insecticidal effect was carried out by a tick inducing test using a large and small double petri dish shown in FIG. 1, and as an embodiment, an example applied to a tatami floor shown in FIG. 2 is shown.

[0009] The following experiment was conducted on the effect of pine tar on mites repelling and killing insects. The test is a repellent effect judgment test (intrusion prevention method)
The test mite is "Dermatophagoides pteronyssinus". As shown in Fig. 1, a plastic petri dish 35 mm in diameter x 10 mm in height
Is placed in the center of a glass Petri dish 2 having a diameter of 90 mm × 20 mm, and this is placed on an adhesive sheet 3. About 10,000 individuals of the number of surviving mites are uniformly introduced into the mite culture medium 4 that has proliferated well between these petri dishes, and pine tar powder is placed in the plastic petri dish 1 in the center.
The induced culture ground 5 containing 0.1 g and 0.05 g of the powdered feed as the inducer was set as a treatment group, and only the powdered feed without pine tar powder was set as a control group.

[0010] The petri dish thus set together with the adhesive sheet is placed in a 27 cm x 13 cm x 9 cm plastic bag closed container for storing food, kept at a humidity of 75 ± 5% using saturated saline, and kept at a temperature of 25 ± 1 ° C. After 24 hours storage in a vessel, observe the number of live mites and the number of dead mites attracted to the inside of the Petri dish 1,
Counted. Table 1 shows the results of the repellent effect obtained from the values of the three test plots and the average value thereof. Judgment is as follows:
And the mortality rate of the induced mites was calculated by Equation 2.

[0011]

(Equation 1)

[0012]

(Equation 2)

[0013]

[Table 1]

As is clear from the results in Table 1, the pine tar powder reaches 90% of the repellent rate, has a great repellent effect on mites, and about 40% of the mites that have entered die 24 hours later. After 48 hours, most were found dead.

Pine tarnish powder is mixed with calcium carbonate powder in a ratio of 1: 4, and the mixture is placed on a tatami floor (900 × 1,800 m).
m, about 1.62 m ² ). As shown in FIG. 2, the spraying place is between a styrofoam plate 6, a tatami floor consisting of wooden boards 7, 7 above and below and a nonwoven fabric 8 covering the tatami floor. It may be sprayed. For such a tatami floor, put rushed tatami mat table 10,
The tatami edge cloth 11 was sewn to finish the tatami mat for a Japanese-style room.

In FIG. 2, the underlaying paper 13 laid under the warp thread 12 and the tatami mat cloth 11 of the tatami mat table 10, and the flat stitch thread 15 and the reverse thread 16 as sewing threads are also mainly made of pine tar. It is preferable to perform a tick repelling and insecticidal treatment. In this case, it is preferable to carry out a treatment for supporting a predetermined amount of pine tar by applying, spraying, or immersing the pine tar powder in an aqueous dispersion of the pine tar powder. For example,
200 g of pine tar powder is dissolved and dispersed in 200 cc of an aqueous solution containing 2% of polyethylene glycol nonyl phenyl ether and 1% of polyvinyl alcohol as a treatment liquid, and about 1.7% of pine tar is adhered to the yarn or cloth. The repellents showed sufficient repellent and insecticidal effects on mites.

[0017]

EFFECTS OF THE INVENTION The mite repellent / pesticide mainly composed of pine tar according to the present invention has an unexpectedly large effect on house dust mites and house dust mites, and it is sufficient to use pine tar simply by powdering or using a spreading agent together. Since it exerts its effect, it is easy to use, has no harm to humans and livestock, can be used with peace of mind, and is useful for maintaining hygiene in living spaces. In particular, application of this drug to various indoor products can be expected to contribute to the recovery of the health of people with asthma.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a petri dish used for a mite repellent / insecticidal test.

FIG. 2 is a cross-sectional view of a tatami mat subjected to a tick-proof treatment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic petri dish 2 Glass petri dish 3 Adhesive sheet 4 Tick culture medium 5 Induction culture ground 6 Styrofoam board 7 Wood board 8 Non-woven fabric 9 Pine scattered layer 10 Tatami table 11 Tatami mat cloth 12 Warp 13 Edge lower paper 15 Flat sewn thread 16

Claims (3)

[Claims] 1. A mite repellent / pesticide comprising pine tar or a mixture of pine tar and a spreading agent. 2. The spreading agent comprises one or a combination of two or more selected from calcium carbonate, calcium hydroxide, titanium oxide, zinc white, and diatomaceous earth, and is a mixture with powdered pine tar. The mite repellent / pesticide according to claim 1. 3. The mite repellent / pesticide according to claim 1, wherein the spreading material comprises a pine tar surfactant or a thickener or a combination thereof, and is a mixture with a liquid pine tar.