JPS59184113A - Cleaning agent for repelling mites in floor mat - Google Patents

Abstract

PURPOSE:To provide the titled cleaning agent by using fine sulfur powder mixed with finely pulverized inorganic powder or organic powder to prevent the recoagulation of the sulfur, as essential component, and adding a diluent and a perfumery to the sulfur powder. CONSTITUTION:The titled cleaning agent contains, as an essential component, fine powder of sulfur mixed with finely pulverized inorganic or organic powder. The particles of sulfur having diameter of 0.1-10mu account for 90% of the whole sulfur. The finely pulverized inorganic powder or organic powder used to prevent the recoagulation of sulfur powder is e.g. starch, clay, diatomaceous earth, magnesium silicate, boric acid, phytic acid zinc salt, etc. The above cleaning agent is further incorporated with a diluent such as sodium sulfate, sodium chloride, potassium pyrophosphate, zeolite, etc. and a perfumery such as thianthol, phenylethyl alcohol, clove oil, lemon oil, etc. The cleaning agent rapidly kills vermin by covering the body of the vermin with fine sulfur powder which tends to adhere to the body surface of vermin.

Description

[Detailed Description of the Invention] The present invention aims to eliminate harmful insects that occur on folds, carpets, etc.
In particular, the purpose is to reduce the number of mites.

This invention relates to a spray agent for cleaning floor coverings, which is characterized by containing finely divided sulfur powder that imparts the property of adhering to the surface of insect bodies, and coating the insect bodies with the sulfur powder, thereby rapidly killing these organisms. It is something. The function of mortality in this case is not yet clear, but it is not necessarily attributable solely to the pharmacological effect of sulfur on the insect body; physical or mechanical effects, such as suffocation due to spiracle obstruction, may also play a major role. It seems that there are. The effect of killing living organisms, which is thought to be due to similar physical functions, is also observed in other organic or inorganic fine powders, but the effect is not particularly pronounced in the case of sulfur.9 Sufficient to support the effectiveness of sulfur as a diluent. In addition, it is known that some fragrances paralyze the nerves of various living things, and when fragrances are added to improve palatability in the practice of the present invention, these fragrances may have the insecticidal effect of sulfur. Although it was acknowledged that it could be helpful.

In this case, the fragrance only plays a supporting role.

This did not constitute the main effect of the present invention. The inventors have conducted detailed studies regarding these phenomena and have completed the present invention.

In recent years, Japan has seen the development of so-called housing complexes and the so-called Western style of housing, and the degree of airtightness of living rooms has increased.
As a result, living rooms are constantly hot and humid, causing mold and mildew.
It has a tendency to encourage the overgrowth of bacteria and various parasitic organisms. House dust mites are especially likely to breed on tatami mats and carpets.

According to a theory, mites such as the mites account for 80% of the causes of childhood asthma, or are the pathogenic organisms of Kawasaki disease. It has become a social problem that cannot be overlooked. In recent years, the damage caused by these mites has attracted much attention due to DDT.
This is partly due to the fact that the use of acaricides such as , BHC, etc. has been prohibited from the viewpoint of safety, and the development of safe acaricides to replace them has been delayed. Therefore, the development of safe acaricides is an urgent social need today, but in order to be used in general households, it is necessary not only to have a reliable acaricidal effect but also to ensure safety and safety. Fast-acting.

There is a need for something that takes into account the requirements of economy and ease of use. The inventor considered these requests and focused on the fact that sulfur, which is extremely safe for the human body, can sometimes exhibit acaricidal properties.

The present invention was completed after conducting a series of studies starting from examining the conditions under which this acaricidal power is exerted. The details are summarized below.

1) Comparative test method for acaricidal power.

Put the alpha seeds into the beaker t1. ．． +a
.

Stored in a humidified box with a room temperature of ~25° and 90% RH, and the mites that had formed in the seeds were replanted in the same manner.9 seeds (1g)
The larvae are cultured at a density of 9 to 100 larvae per larva to obtain test larvae.

Place a wire mesh weighing 40 mesh on the Petri dish in step 9 (1), place an appropriate amount of seed mass on top, tap the wire mesh to move about 100 insects into the Petri dish, immediately add 1 g of specimen, and then close the lid. After applying the specimen, gently shake the petri dish horizontally to spread the specimen evenly, then continue observing using a magnifying glass and record the movement of the insects as well as the number of stationary insects over time. Separate the stationary insect body from the specimen using an appropriate method, transfer it to another petri dish,
If no overgrowth of insect bodies is observed after being left undisturbed for 24 hours in an environment of 90% RH, the first stationary period is considered as the lethal period.

A mixture was prepared by lightly grinding 1 part of the powder with mirabilite cap, 1 part of the precipitated sulfur raw material was mixed with 0.5 part of magnesium metasilicate aluminate as a grinding aid, and the mixture was filtered through an 80 mesh mesh. Alternatively, the sample was ground in a mortar and mixed with 85 parts of Glauber's salt.

Discussion: a) The insecticidal effect varies significantly depending on the sulfur particle size.
This indicates that the effect is not solely due to the pharmacological action of sulfur.

b) The insect body is a round, colorless and translucent mite with a diameter of 06 to 0.4 silk, and it runs quickly when exposed to light. The insects did not show any behavior to avoid the specimen, so it seems that there was no repellent gas around the specimen particles, and the specimen itself did not exhibit repellency.

C) When the insect body comes into contact with the fine powder, i.e. sulfur powder, in the specimen,
The fine powder instantly sticks to the surface of the insect's body as if being sucked in, and this process is repeated until the insect's body is completely covered by the fine powder, making it impossible to drive. However, I have been actively moving my legs for a while.

Eventually, the whole body (movement stopped). Using a suction tube, put the body of the insect on a physiological saline solution, quickly separate the fine powder, scoop out the exposed body of the body with P paper, and store it for 24 hours. In other words, the above-mentioned cessation of movement was a fatal cessation.

d) The difference in the lethal effect of each particle size fraction is not necessarily gradual, and the 0.5-5 μm fraction is specifically effective. Also, fine powder sticks to the insect's body as if it were sucked in, but large particles do not.

It feels like the fine powder is being carried by the airflow towards the inside of the insect. Furthermore, the spiracles of ticks are said to have a diameter of 2 to 3 microns. Based on these findings, it is assumed that the fine powder is carried to the spiracles by the insect's inhaled air and blocks the spiracles, resulting in suffocation of the insect. The reason why the lethal effect is inferior when the particle size is 0.5μ or less can be explained by the fact that particles smaller than the spiracles pass through the spiracles and do not cause blockage.

e) The preferred particle size of sulfur for lethal effect is 0.
It can be seen as 5 to 10 microns.

f) All of the elementary particles of the precipitated sulfur bulk are 2 microns or less, but the elementary particles aggregate to form large layer grains. To reconstitute a fine powder suitable for lethal effect, the mixture mixed with the anti-recombination agent may be lightly pressed.

6) Consideration of the acaricidal effect of a single fine powder chemical: a) Each sample was selected from a brand that was easily available as a raw material for mass production and had a small particle size. None showed a tick effect. In other words, it is thought that certain pharmacological effects also contribute to the acaricidal effect of sulfur powder.

b) Magnesium metasilicate aluminate has a particle size effect similar to that of precipitated sulfur, but even with a5-5μ5-5μ, which was considered optimal for spiracle obstruction, the insecticidal effect is far greater than that of precipitated sulfur. Inferior. This also indicates that precipitated sulfur has certain pharmacological effects.

C) In the sample group in which the so-called insect repellent was adsorbed to 0.5-5% calcium sulfate, the lethal effect due to the particle size would be dominated by calcium sulfate, so if the effect is different from calcium sulfate, The difference is thought to be due to factors other than the particle size derived from the repellent. According to this.

Factors other than particle size contribute to the lethal effect of thianthol.

d) From the above, fine sulfur particles of appropriate particle size are still the main ingredient in killing mites, but magnesium metasilicate aluminate and thiantho I are useful as auxiliary agents.

4) Consideration of the influence of the blended concentration of sulfur powder: a) As a peptizing method, the crushing method is slightly superior, and the sulfur rice particle size distribution of 1 to 6μ is better than that of 1 to 10μ.

b) In either case, the effect is not affected by the concentration of sulfur powder. This shows once again that the effect is caused by the insect body coming into contact with the sulfur powder and is not due to gaseous components. However, if the concentration becomes significantly smaller, the chances of insect bodies encountering sulfur particles will decrease, resulting in a decrease in effectiveness. A trend is observed. Therefore, the blending concentration is preferably 5% or more.

Discussion: a) Although we conducted a much wider range of experiments regarding the number of types of fragrances and test concentrations than those shown in the table above, the acaricidal effect of fragrances is not necessarily the gist of the present invention, so to avoid complications, a representative range was used. I stopped displaying. For this reason, although it cannot be immediately read from the displayed data, the following four phenomena were observed between the fragrance and the mite activity cessation phenomenon.

(1) Many fragrances have a mite-stopping effect, and most of them have a mite-killing effect.

(2) The lethal time was concentration-dependent, indicating that the effect was expressed through gaseous components.

(6) The number of insects killed is approximately directly proportional to the test time.

(4) When the logarithmic value of the fragrance compound concentration is plotted against the 100% lethal time, two straight lines appear, and two representative examples are shown in attached drawing-1. Although we have not yet succeeded in theoretically explaining this relationship, the effective concentration is determined by the fragrance concentration corresponding to the intersection of these two straight lines, and the slowness of the onset of the effect is determined by the slope of the first straight line. can be expressed as

b) Crushed precipitated sulfur alone can give a lethal time of 7 to 8 minutes, so fragrances alone are equivalent to cinnamon oil, thymol, citral, and clove oil within the range studied. Only 6 of the 1 to 1 mixtures were discovered.

Incidentally, citral and clove oil have a synergistic effect. However, in order for these to have the same effect as precipitated sulfur, a blending ratio of 0.1 to 0.596 is required, and the aroma emitted is too strong for practical use. Since the concentration of fragrance in practical use is at most 0.05%, in practice fragrance alone does not contribute to the acaricidal effect.

C) When blended into a preparation containing micronized sulfur 1
In some cases, fragrances may synergistically contribute to the acaricidal effect, and an example of this is shown in the ash amount.

6) After studying the synergistic effects, as shown in the Examples, the formulations that can be used in the present invention are preferably in addition to the main ingredient, micronized sulfur, [at least an auxiliary agent for sulfur micronization and prevention of reaggregation, and a spraying agent. It is used as a diluent to make stools easier, as well as a flavoring agent. In this case, since it is undesirable that the additive Nj added would reduce the acaricidal effect of the finely divided sulfur, a mixing test was conducted.

Consideration.

In the example shown in the table above, there was no effect of offsetting the acaricidal effect between the ingredients, but a phenomenon was observed in which the aromatic wood synergistically enhanced the acaricidal effect of crushed sulfur powder. Kogi alone does not show any miticidal effect.

Examples of the present invention will be described below.

Example 1 A product is prepared by simply mixing 10 parts of precipitated sulfur powder, 88.5 parts of anhydrous sodium sulfate, and 15 parts of aromatic wood made by adsorbing 0.5 parts of lemon flavor to 1 part of ficilif.

The average lethal time of the test mites is 65 minutes. When I examine it under a microscope, I can hardly see any fine powder, and it seems that the fragrant wood is adsorbed to other particles. The adhesion of the sample to the insect body is very small. The sulfur particles are 10-30μ.

Example-2= 10 parts of precipitated sulfur bulk powder and 747975 parts were mixed, 80 parts
A product is prepared by mixing 15 parts of mixed rice, which has been pressed using a Metsushi stainless steel mesh granulator, and 85 parts of anhydrous sodium sulfate.

The time taken to kill the test mites was 8 minutes, and the acaricidal effect was significantly increased. Under a microscope, the sulfur particles were broken down to 1-3 microns, which caused the product to be noticeably lighter in color. The stickiness of the powder part to the insect body is rather large, and the entire insect body is hidden by the deposited powder.

Example-6: 10 parts of precipitated sulfur bulk powder and 747,975 parts were mixed, and 15 parts of mixed powder, which was polished for 10 minutes using an electric mortar, and 85 parts of anhydrous sodium sulfate were mixed to prepare a product.

The lethal time for the test mites was 27 minutes, which was much shorter than in the case of the precipitated sulfur powder treatment, but longer than in the case of Example-2.
The acaricidal effect is poor. The number of sulfur particles in a microscope is 1~
At 10μ, there were many larger particles than in Example-2, and it seems that there are recombination parts due to compression.

) Kam@J-4:
15 parts of mixed rice obtained by mixing 10 parts of II precipitated sulfur logs and 747,975 parts and pressing it through an 80 mesocystine-less steel screen;
A product is prepared by mixing six products: 1.5 parts of aromatic wood made by adsorbing 0.5 parts of lemon flavor to 747,971 parts, and 83.5 parts of dry anhydrous sodium sulfate dried with ventilation at 75°C for 6 hours.

The time taken to kill the test mites was 6 minutes, and the acaricidal effect was significantly increased, indicating a synergistic effect by the aromatic wood.

Example-5: Mix 10 parts of precipitated sulfur and 747,975 parts and mix 15 parts of mixed rice that can be passed through an 80 mesh mesh, and 74 parts of lemon flavor 05 parts.
1.5 parts of aromatic wood adsorbed on 7971 parts, 5096
15 parts of benzalkonium powder prepared by adsorbing 0.5 part of benzalkonium chloride solution to 747,971 parts, 6 parts at 75°C.
A product is prepared by mixing 82 parts of dry anhydrous sodium sulfate (4 parts) that has been air-dried for an hour.

The lethal time for the test mites was 52 minutes, and in this formulation method, benzalkonium chloride does not enhance the miticidal activity, but rather tends to inhibit it.

Example-6: Mix 5 parts of precipitated sulfur and 1 part of twinlin.

6 parts of mixed rice that can pass through an 80 mesh mesh, 0.6 parts of lemon flavor
0.9 parts of fragrant wood made by adsorbing 0.6 parts of Ficilif
96% of dried anhydrous sodium sulfate, dried with ventilation at 75°C for 6 hours.
Mix the three items in one part to make a product.

The lethal time of the test mites is 4 to 8 minutes, with an average of 6 minutes. Even if the amount of fragrance added is reduced, the acaricidal synergistic effect remains.

The formulation of Example 6 is a representative example of the embodiment of the present invention from an economic standpoint.

The various properties are described in detail below.

a) Appearance: pale yellow, highly fluid dry granular mixture;
It has a lemon-like aroma.

b) Flowability Free flowing with a direpose angle of 29-62°.

C) Particle size fraction: 90% of sulfur particles are 1-6μ.

Overall 9096 is 10-60 μ.

d) Hygroscopicity: Critical humidity (room temperature) is around 824RH.

When it comes in contact with water, it absorbs water and waits for 1-2 seconds. It changes into coarse crystals all at once.

#) Liquidity: The pH of the 5% suspension is Z±02.

Cleaning f) Cleaning facilitation: Quartz neutralizes the static electricity on the rug, making it easier to remove dust from the rug surface, thereby promoting the cleaning effect. for example.

Two crystals were placed on a test heather cut into a 40 x 60-sized cut pile carpet made of acrylic fiber that was severely contaminated.
Sprinkle 0g evenly, let stand for 10 minutes, carefully suck it up using a vacuum cleaner, and then rinse with warm water at 50°C.
The sample is immersed in the liquid and carefully rubbed to remove dust, and the washing liquid is suction-filtered using No. 2 P paper. The P paper is air-dried at 60°C overnight, and the dried residue on the P paper is weighed. Separately, a contaminated test piece that is not treated with crystal is vacuum-cleaned, treated in the same manner, and the control residue is weighed.

(Control residue - treatment test heather residue) is the excess area amount that was separated and removed due to the cleaning promotion effect due to crystal treatment, so the excess area amount X + 00 / control) V residue can be used as the cleaning promotion rate. but.

In this example, the cleaning promotion rate is 34.6±7.6%, which can be considered to have a significant cleaning promotion power.

g) Surface dryness: According to statistics, the annual average humidity is 76.2±6% in Japan and 64.7±+2 in the United States, for example.
．． It is +1.596 higher than 996, which means that floor coverings tend to absorb moisture, and this tendency is increasing with the trend toward tighter living rooms. If floor coverings absorb moisture, they not only feel unclean but also encourage the growth of dust mites and mold, so drying the surface of floor coverings is a unique requirement in Japan.

According to sensory evaluation, the moisture content of synthetic rugs is 1.8.
%, and if it drops to 6.0% on a wool rug, it is dry. This seems to be accepted.

In Example 6, anhydrous sodium sulfate as a diluent was further dried and used in order to impart water removal power to the crystal. Sprinkle 20 g of crystal evenly on a 40 to 50 mm test piece that has been stored at 85% RH to absorb moisture. After leaving it for 10 minutes, use a vacuum cleaner to suck up the sample and remove the fibers on the surface of the test piece. The moisture content of the sample was measured before and after the quartz treatment, and as shown below, satisfactory results were obtained.

[Brief explanation of drawings]

FIG. 1 is a logarithmic graph of the correlation between et% number of counterfeits and acaricidal effect. Patent applicant Wakyo Chemical Industry Co., Ltd.

Claims (1)

[Claims] (1) The essential ingredient is finely divided sulfur, which is mixed with finely divided inorganic or organic powder to prevent reagglomeration, and a diluent and flavoring agent are added thereto. A dust mite-killing cleaning agent for floor coverings. (2) Extermination of mites from floor coverings as set forth in claim (1), characterized in that finely divided sulfur in which 90% or more of particle diameters are distributed between 0.5 and 10 microns is used. sexual cleanser. (b) As a fine powder for preventing the re-agglomeration of sulfur, one of starch, clay, diatomaceous earth, silicic anhydride, magnesium silicate, magnesium aluminate metasilicate, boric acid, borax, and zinc phytate. The mite-killing cleaner for floor coverings as set forth in claim (1), characterized in that one or more types are used. (4) Sodium sulfate, sodium and potassium carbonate, sodium hydrogen carbonate, sodium chloride as diluents,
Claim (1) is characterized in that one or more of sodium tripolyphosphate, potassium pyrophosphate, natural or synthetic zeolite, dry aluminum hydroxide gel, and calcium sulfate are used. A dust mite-killing cleaner for floor coverings. (5) Thianthol, citral, phenylethyl alcohol-dl-menthol, thymol, benzyl benzoate as fragrances. A mite-killing cleaner for floor coverings as set forth in claim (1), which is formulated with a fragrance containing a substance selected from bergamot oil, lemon oil, diptyl phthalate, and diethyl phthalate. .