JPS61233603A - Aromatic solid insecticide - Google Patents

Abstract

PURPOSE:To produce the titled insecticidal agent having excellent compression- molded solid form, by impregnating an active volatile liquid component having fragrance in a carrier material composed of calcium silicate having a specific surface area, and mixing the carrier supporting the active component with sublimable insecticidal solid component powder. CONSTITUTION:The objective insecticide can be produced by compression molding a mixture containing a sublimable insecticidal solid component powder such as p-dichlorobenzene as a main component and mixed with a powdery carrier composed of calcium silicate having a specific surface area of >=100m<2>/g by BET process and impregnated with an active volatile liquid component having fragrance. The agent iseffective to the moth-proofing in a closet, a Japanense or Western-style cabinet, a container or case of clothes, etc., toilet, kitchen, etc. EFFECT:It has excellent compression-moldability to form a solid product resistant to collapse, having high toughness without using a binder and leaving little carrier residue after use.

Description

DETAILED DESCRIPTION OF THE INVENTION This product is an aromatic solid product whose main component is a sublimable insect repellent solid component such as ξlanochlorobenzene, naphthalene, camphor, etc., and which also contains a volatile liquid active component having an aromatic property. With respect to insect repellents, in particular having an increased content of the fragrant volatile liquid active ingredient, exhibiting an increased aromaticity and persistence of its volatilization, and also despite the increased content of the liquid active ingredient. The solid state can be completely maintained, and there are no problems such as softening deformation or dripping. Furthermore, the aromatic liquid active ingredient has a volatilization rate that matches the sublimation rate of the sublimable insect repellent solid ingredient, and has a good volatilization rate. 4. Excellent compressibility into a mold-shaped object, can form a molded solid-shaped object with excellent strength without using any binder, and supports the aromatic volatile liquid active ingredient that remains after sublimation of the sublimable insect repellent ingredient. The present invention relates to an aromatic solid insect repellent having many improved effects such as being able to significantly reduce the residual oil content of carrier materials.

More specifically, the present invention is based on a carrier made of calcium silicate which is fully impregnated with an aromatic volatile liquid active ingredient and has a B E 'I' specific surface area of at least about 100n12/2. The present invention relates to a penta-scented solid insect repellent characterized by having a proboscis structure in which a material powder and a sublimable solid insect repellent component powder are mixed, and the proboscis has a compression-molded solid shape.

Conventionally, molded solid products of sublimable insect repellent solid ingredients have been widely used as insect repellents and deodorants, but in order to mask the irritating or unpleasant odors, fragrances, especially volatile liquid active ingredients with aromatic properties, have been used. In addition, attempts were made to control the odor. However, in order to directly incorporate a liquid fragrance into a sublimable insect repellent solid component, there are significant restrictions on the amount to be added. It is difficult to achieve the desired masking effect. If the amount exceeds this range, it will be difficult to maintain the molded solid shape, and problems such as softening, deformation, and even dripping will be difficult to avoid.

As a proposal to avoid such troubles and contain a larger amount of fragrance, Japanese Patent Application Laid-Open No. 53-62833
No. proposal is known. It is stated that in this proposed method of directly blending fragrance into chlorobenzene, the blending amount is limited to about 5%, and that blending in larger amounts may cause softening problems. In this proposal, three micron-sized silica cells were mixed with equal amounts of fragrance, that is, 3 parts of fragrance was absorbed into paper, and 94 parts of ξ-radichlorobenzene powder and 1 part of adhesive were thoroughly mixed and made into tablets. We are proposing a deodorant made with In the proposed aromatic solid agent, only the same weight of fragrance as the carrier material micron size silica cell can be absorbed, and the amount of fragrance in the final product solid agent is only 5% or less. It remains difficult to achieve a fully satisfactory masking effect. In order to further increase the amount of fragrance in the final solid product using this proposed fragrance lNm1 clone size liquid, it is necessary to increase the amount of the fragrance storage micron size/liquid into glassochlorobenzene. Although it is obvious that the increase in the amount increases, it becomes difficult to form tablets, and furthermore, the amount of silica particles becomes too large, making the resulting tablets easily dull. It is presumed that this is due to such troubles, but in this proposal, the above-mentioned blending amount is specified. Furthermore, since the same amount of micron-sized silica kele as the fragrance is used, there is a large amount of carrier material micron-sized silica kele residue remaining after the graduchlorobenzene sublimes, reducing the problem of contamination due to the residue. There are also associated disadvantages.

The inventors of Honshu et al. carried out research in order to provide an aromatic solid insect repellent that can overcome all of the above-mentioned defects and disadvantages.

As a result, a volatile liquid active ingredient having an aromatic property is impregnated and supported, and the BET method specific surface area is at least about too door/r.
An aromatic solid insect repellent having a mixture structure of a carrier material powder made from calcium silicate and a sublimable insect repellent solid component powder, and the mixture structure has a compression molded solid shape,
It has been discovered that the above-mentioned defects and disadvantages can be overcome and an aromatic solid insect repellent can be obtained which exhibits even more excellent and unique properties.

According to the research conducted by the present inventors, in a carrier material powder made of calcium silicate having a BET specific surface area of at least about It is possible to form a powder state in which a large amount of the liquid active ingredient is impregnated and supported at a weight ratio of about 128, and further, the liquid active ingredient impregnated and supported carrier powder and the sublimable insect repellent solid ingredient powder are combined. It has been discovered that the mixture has excellent compression moldability F?H and can be molded into a strong molded solid shape that does not easily crumble without the need for the use of an adhesive.

Furthermore, according to a study by the Ministry of Unexploded UFX, etc., it is significantly lower than 6.
With a reduced amount of calcium silicate, a significantly increased amount of the aromatic volatile liquid active ingredient K can be incorporated into the aromatic solid insect repellent, and a significantly increased amount of the dispersible active ingredient K can be incorporated into the aromatic solid insect repellent. The solid form of the final aromatic solid insect repellent product can be maintained despite containing active ingredients, and the calcium/umum silicate powder impregnated with the liquid active ingredient can volatilize the impregnated liquid active ingredient. It has been discovered that the insect repellent exhibits a performance that is well-balanced with the sublimation rate and maintains the masking effect significantly until the end of consumption of the insect repellent.

Thus, the product of the present invention has an increased content of the aromatic volatile liquid active ingredient, exhibits increased aromaticity and persistence of its volatilization, and also has an increased content of the liquid active ingredient. Despite this, it maintains its solid state and has no problems such as softening and deformation or dripping, and also exhibits a well-balanced volatilization rate of the aromatic liquid active ingredient that matches the sublimation rate of the sublimable insect repellent solid ingredient. The aromatic volatile liquid active ingredient has excellent suitability for compression molding into a molded solid shape, can form a molded solid shape with excellent strength without using a binder, and remains after sublimation of the sublimable insect repellent component. There are many improvements such as the ability to significantly reduce the amount of carrier material residue (r'l
It has been found that an aromatic solid insect repellent can be provided.

Therefore, the purpose of this invention is to provide a unique aromatic solid insect repellent with superior improved properties.

The above objects and many other objects and advantages of the present ia1% will become more apparent from the following description.

Hereinafter, several examples of the products of the present invention will be described in more detail using the accompanying drawings. FIGS. 1 to 6 are plan views and cross-sectional views taken along the line A--A of several examples of the standard Tohe products (however, for ease of viewing, cross-sectional lines are omitted). In the figure, black dots 1 shown in the cross-sectional view indicate calcium silicate 7 impregnated and supported with a volatile liquid active ingredient having aromatic properties and having a BET specific slope surface area of at least about 1oo,,'/r.
In the cross-sectional view, a white area 2 represents a matrix portion consisting of a sublimable insect repellent solid component powder.

Figure 1 shows a snoring device with a circular plan view and a tablet-shaped cross section.
An example of an unexploded product is shown in Figure 2 (an example of an unexploded product with a spherical shape, circular in plan view and circular in cross-section). Several examples of donut-shaped, hollow cylindrical or hollow prismatic-shaped books (tBR) products are shown in which the area for sublimation and volatilization of aromatic 1'14i resistant liquid active ingredients is increased.

These are just a few examples of compression-molded solid shapes of the products of the present invention, and each ridge can have any three-dimensional shape.The size can also be any desired size. If desired, a loop forest-like body for hanging can be compressed together with its legs 7 buried in these molded bodies, with the hanging parts protruding above the surface of the molded bodies, and hung at a desired usage position. It is also possible to add hanging appendages.Alternatively, a single linear body can attach multiple solid bodies as shown in the example in Figure 2. The mold-shaped bodies can be connected in a series in the form of beads, and can be made into a form suitable for use by being spread over a wardrobe, a closet, etc.Furthermore, one piece or several pieces It is also possible to store the product in a net-like material, a bag-like material, etc. In this case, the product of the present invention can be used for the volatilization of the aromatic volatile liquid active ingredient and the sublimable solid insect repellent component and for the total permeation and dissipation of the sublimate (penetration). It can be used by being housed in a container of a desired shape made of a plastic material that allows for migration and escape. Examples of such plastic materials include vinyl chloride resin, ethylene/vinyl acetate, etc. Examples include thread resins, ethylene/alkyl acrylate and/or alkyl methacrylate resins, ethylene/α-olefin resins, and appropriate blends thereof. Among these resins, it is often preferable to use plastics with elastomeric properties τ. These resins are commercially available.Volatilization and sublimation*: Fluorastic materials capable of transmitting and dissipating the active ingredient can be selected as appropriate.

As shown in the cross-sectional views in Figures 1 to 6, the unexploited products carry a volatile liquid active ingredient having aromatic properties and have a BET specific surface area of at least about 100 mm.
The carrier material powder has a mixture structure of a carrier material powder made of calcium silicate of my/y and a sublimable insect repellent solid component powder, and the carrier material powder impregnated and supported with the liquid active ingredient is composed of the insect repellent solid component powder. It is advisable to make the mixture 41 as uniformly dispersed as possible throughout the unexploded product in the lux.

Historically, this product has a solid form obtained by compression molding the above mixture. Compression molding means can be selected as appropriate, for example, tableting method, punching method, 1liI1. A known compression coloring method such as a compression molding method using a mold and a male mold can be appropriately employed. The non-explosive product is a powder in which a volatile liquid active ingredient having an aromatic property is impregnated and supported in a carrier material powder consisting of calcium/umium silicate with a BET specific surface area of at least about 100 ++i'/'. The sublimable insect repellent solid component powder can be easily molded into a desired compression molded solid form using a compression molding means such as the one shown in 1 above.

At this time, it is possible to add an adhesive or a binder to the material for molding, but it is not necessary to do so. The particle size can be selected as appropriate, and for example, the average particle size may be about 100 to about 450 microns.The particle size of the insect repellent solid component powder can also be selected as appropriate.

(3) The amount d of the liquid active ingredient impregnated into the carrier material phase powder can be appropriately selected so that the powder after impregnation and support does not become so wet that it impairs its powder flowability. . Typically, the ratio of unimpregnated carrier material to aromatic volatile liquid active ingredient is less than or equal to about 8 to 1, e.g., about 1:3.
The holding weight for impregnation of about 5 to 50% can be shown at a suitable size.

That is, the micron size/
Compared to liquid carrier, it is possible to maintain a dry powder state even if the same carrier material is impregnated with about 3 to 5 times the amount of electrolyte.

13 Examples of sublimable insect repellent ingredients used in the proposed product and t, -1
;l:,) such as lanochlorobenzene, naphthalene, camphor and any mixture thereof, to name a few. Various natural, synthetic, and prepared fragrance compounds and perfumes can be used as volatile liquid active ingredients used in this ash product. Examples of such zm-like active ingredients include: Examples include natural or blended fragrance ingredients such as floral notes such as soyasmine, rose, lyre, carnation, and gardenia, as well as floral bouquet notes, modern floral bouquet notes, green floral notes, and wood fragrance notes.

Furthermore, in the products presented to the Society, as a carrier material for supporting volatile liquid active ingredients having an aromatic property such as those exemplified above, the BET specific surface area of the carrier material is at least about 100 mm.
i/y calcium silicate is utilized. As the impregnating material, it is possible to use glue or other impregnating materials, but for this item (C), it is essential to use calcium silicate with a B II T method specific surface area of at least about 100 n1' / f, Gives unexpected and disappointing results.As such calcium silicate, S?, 0□about 5
0 to about 90 layers, CaO about 01 to about 30 layers, and A 120 as the remaining other components. , F e2031jz
The calcium silicate contained therein can be conveniently utilized. For example, SiO2 about 50 to about 70%, CaO about 20 to about 30%
of calcium silicate, SiO2 about 85 to about 90%, Ca
An example is calcium silicate, such as about 01 to 1%.

In this way, the surface area of the ET method is at least about 100 ni.
/fl, for example, about 100 to about 500 m2/9, calcium silicate is available from commercial stores, many of which have petal-like crystal shapes, and can be used in the present invention.

In the present iaR product, the amount of the carrier material powder made of calcium silicate impregnated and supported with a volatile liquid active ingredient having aromatic properties can be appropriately selected according to the VC so as to fully exhibit the desired masking effect. Based on the combination of the impregnated supported carrier material powder and the sublimable insect repellent solid component powder = - + weight, the blending amount can be exemplified from about 1 to about 25 weight.

This WThtt product can be suitably used, for example, to prevent insects inside closets, Japanese and Western dressers, clothing and other storage boxes, cases, and similar items, or to prevent insects inside toilets, kitchens, storerooms, etc. I can do it.

Next, an example of the production of a dud song product and a comparative example will be shown.

Manufacture example of the original song product BET method Specific surface area is 1. o o ~t 30n? /y
Commercially available calcium silicate (Fluorite R: Tokuyama Soda (
Co., Ltd. product) 37 and 12 grams of jasmine-based liquid fragrance were uniformly mixed in advance to prepare a powder fragrance. This powder was thoroughly mixed with zochlorobenzene 857 and ', and then tableted in a conventional manner to obtain an aromatic solid insect repellent that did not explode. The obtained product G: The product was hard, and no exudation of liquid fragrance was observed. Furthermore, the pungent odor of the parasochlorobenzene sublimation was completely masked, and the favorable soyasmine aroma (C) persisted at the end of the parasochlorobenzene sublimation.

Because of its relative softness, Zyroid (micron size silica gel manufactured by Fuji Davison) 31i+ and 11= Liquid fragrance 12 as described above? However, the powdered fragrance did not form and the product could not be prepared.

[Brief explanation of the drawing]

The attached FIGS. 1 to 6 are plan views and cross-sectional views taken along the line A--A in the plan views of several examples of this hammered product. However, for ease of viewing, the cross-sectional lines are omitted. 1 other person 17-Figure 1 Figure 2 Figure 4 Figure #5

Claims (1)

[Claims] Impregnated and supported with a volatile liquid active ingredient having aromatic properties
A fragrance comprising a mixture of a carrier material powder made of calcium silicate having an ET specific surface area of at least about 100 m^2/g and a sublimable insect repellent solid component powder, and the mixture has a compression molded solid shape. solid insect repellent.