JPH1059804A - Transportation and storage of agrochemical - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a package of the preparation of an agrochemical volatile at room temperature by packing and charging with jacket material, placing the packages in a specific cardboard container and transporting or storing the containers. SOLUTION: An agrochemical volatile at room temperature is prepared to form a volatility-reduced agrochemical preparation. The preparation is packed or sealed with a jacket material, for example, a corrosion-resistant metal vessel or a plastic vessel, a bag or the like to give an agrochemical preparation package. This package is placed in a cardboard vessel 4 or more mm thick, coated with a plastic film on its inside and transported or stored. In addition, in order to increase the strength of the cardboard vessel, bottom covers can be inserted into the vessel. The agrochemical preparation is safely transported and stored on the distribution routes without leakage of the active ingredients outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for transporting and preserving a formulation which is prepared by formulating a pesticide having volatility at room temperature while suppressing volatility, and which is safe even for general distribution, and a container therefor.

[0002]

BACKGROUND OF THE INVENTION Soil fumigants which are liquid at room temperature, such as chloropicrin, 1,3-dichloropropene, dichlorodiisopropyl ether and methyl isothiocyanate, are to be applied in the liquid state by filling them in the tank of the soil irrigation machine. Used and released into the soil from the tip nozzle of the irrigation machine. In this case, the toxicity, volatilization and tearing properties of the fumigant adversely affect the health of workers.

[0003] In recent years, for the purpose of preventing such chemical damage, attempts have been made to solidify these soil fumigants to facilitate application operations. For example, chloropicrin is mixed with dibenzylidene sorbitol and a gelling preparation in an organic solvent, gelled, and vacuum-packed with a gas-impermeable film (Japanese Patent Application Laid-Open No. 62-192301). Absorbed into porous granules,
A method of coating with a water-soluble polymer has been disclosed (JP-A-01-172302). However, there is no proposal at all regarding the storage form and the transport form of the chlorpicrin preparation prepared and manufactured by such a method.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a method for transporting and preserving pesticide preparations having volatility at room temperature with reduced volatility and safe for general distribution, and a container therefor.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that agrochemical preparations can be packaged and packaged using containers, bags, or other external materials that reduce the gas permeation rate of pesticides. The present inventors have found that it is sufficient to enclose and transport and store it in a specific cardboard container, thus completing the present invention.

That is, the present invention provides (1) a pesticide having a reduced volatility by formulating a pesticide having volatility at room temperature to obtain a pesticide preparation having reduced volatility;
A method for transporting and storing a pesticide, characterized in that a package for agrochemicals is prepared by enclosing the package and the package is stored in a cardboard container having a thickness of 4 mm or more. (2) The inside of the cardboard is covered with a plastic film (1). (3) The transport and storage method according to (2), wherein the plastic film covering the inside of the cardboard is a plastic film having a metal layer, and (4) volatile at room temperature. (1) to (3), wherein the pesticide having (1) is chloropicrin, 1,3-dichloropropene, dichlorodiisopropyl ether, or a combination of two or more of methylisothiocyanate. (5) Having an insole inside the corrugated cardboard (1)-
The transportation and storage method according to any one of (4) and (6).
A package for use in any of (1) to (5), wherein a pesticide having volatility at room temperature is formulated into a pesticide formulation having reduced volatility, and the pesticide formulation is further packaged. (7) A cardboard container having a thickness of 4 mm or more for accommodating the agrochemical preparation package described in (6), which is packaged and sealed with a material.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The exterior material in the present invention means a metal container or a plastic container or bag having corrosion resistance to pesticides, which are active ingredients of a preparation,
Refers to products that can be directly packaged and sealed with pesticide formulations. When a metal container is used as such an exterior material, it has been found that a material having low reactivity with the above-mentioned pesticides, for example, stainless steel, may be used. When a container made of stainless steel is used, an agrochemical formulation that has been formulated and reduced in volatility is put in the container, and the container is packaged and sealed by covering with a lid made of the same material. In this way, a pesticide formulation package in which the pesticide formulation is packaged and enclosed with the outer material is obtained. The lid is
A screw-in type may be used, or a type in which a packing is interposed and fixed may be used. Such a stainless steel container not only has a low permeation rate of the pesticidal active ingredients, but also does not allow air, water vapor, or light in the atmosphere to pass, so that the components in the pesticide formulation may react with these atmospheric components. Even if it is easy to cause such a reaction, it is difficult to cause such a reaction, so that deterioration of the pesticide formulation can be prevented. Furthermore, since such a metal container has physical strength, it is advantageous in that the container can be used without any breakage even in a general distribution process. Note that such a metal container may be used in combination with a container or bag made of a plastic film. That is, the agricultural chemical formulation packaged with the following plastic exterior material may be further placed in such a metal container.

On the other hand, when plastic is used as the exterior material, it is preferable to use a material having corrosion resistance to pesticides as in the case of a metal container. In the case of plastic, the gas permeation rate of the pesticide is 5.00 g / room temperature at room temperature.
It is preferable to use a material having a permeation speed of not more than m ² · hr, preferably a permeation speed of not more than 1.00 g / m ² · hr, more preferably a permeation speed of not more than 0.10 g / m ² · hr. . The gas permeation rate of the pesticide referred to here indicates a value measured at room temperature (20 ° C.) and a relative humidity of 50%. The moisture permeability of the exterior material is also important, and the moisture permeability is 10.0 g / m
² day atm (38 ° C, 90% RH: ASTM
E-96) or less, preferably 1.0 g / m ² · day ·
atm, more preferably 0.1 g / m ² · day · a
tm. By packaging and enclosing a pesticide having reduced volatility by formulating a pesticide having volatility at room temperature by the plastic outer material as described above, a pesticide formulation package can be obtained.

When transporting or storing an agricultural chemical package packaged and sealed with such an exterior material, it is preferable that the package is further accommodated in a container and transported and stored. As such a container, a container which is light in weight, can be manufactured at low cost, and is easily discarded after use is preferable. As a material of the container for transportation and storage satisfying the conditions, there is cardboard. However, if a normal cardboard container is made of paper, if it gets wet with water for some reason, moisture may enter the pesticide package packaged and enclosed with the outer material, resulting in an unexpected accident. Maybe. Further, it is preferable that the strength of the cardboard container is also improved.

The inventors of the present invention have made intensive studies from such a viewpoint. As a result, it is possible to prevent water from being mixed into the pharmaceutical package by coating (lining) the inside of the cardboard container with a plastic film. It has been found that even if the active ingredient of the preparation leaks out of the exterior material forming the package, the leakage of the preparation out of the cardboard container can be suppressed. In addition, the present inventors insert cardboard paper of the same thickness and material as cardboard as an insole inside the cardboard container, and appropriately insert it between the packages contained therein, so that the cardboard container serving as a transport container can be obtained. It has been found that the strength can be further increased.

Hereinafter, the cardboard container for transportation and storage according to the present invention will be specifically described. Transportable cardboard containers as storage containers that can be used in the present invention,
It is a so-called cardboard box that is commonly distributed. However, since the strength of the cardboard container itself is required, if the thickness of the cardboard is too small, the strength cannot be maintained. Therefore, a cardboard having a thickness of 4 mm or more is preferable because the strength is excellent. The upper limit is 30 because it is too thick to handle.
mm.

It is preferable to attach a plastic film to the entire inner surface of such a cardboard container and further cover the plastic film. In this way, it is possible to prevent water from being mixed into the exterior material of the pharmaceutical package, and to prevent the pharmaceutical from flowing out of the cardboard container even if the pharmaceutical should leak from the exterior material.

Examples of the material of the plastic film of the exterior material used for coating having such properties include, for example, polypropylene, polyethylene chlorofluoroethylene, polyethylene tetrafluoroethylene, ethylene vinyl acetate resin, polyethylene vinyl alcohol, and polytetrafluoroethylene. Ethylene hexafluoropropylene, polystyrene, polyethylene, nylon, polyethylene terephthalate, polyamide, polyamide imide, polyarylate, polycarbonate, poly-3-fluoroethylene, polyether ether ketone, polyethylene naphthalate, polyether imide, polyether sulfone, Polyimide, tetrafluoroethylene perfluoroalkyl vinyl ether, polyparabanic acid, polyphenylene sulfide, Sulfone, poly-4-fluorinated ethylene, polyvinyl acetate, polyvinyl chloride, polyvinyl fluoride, polyvinylidene chloride, polyvinylidene fluoride, polybutylene terephthalate, iomer resin, polyacrylonitrile, polyester, polymethyl methacrylate, polyurethane, polybutadiene, Poly-4-
Methylpentene, cellulose acetate, ethylcellulose,
Examples include polyvinyl alcohol, polylactic acid, and ABS. In addition, if necessary, the above-mentioned plastic film is laminated using an adhesive, or a resin coating is used to form a multilayer, or a metal layer is laminated with the above-described plastic film, or a sputtering method or the like. Physical vapor deposition such as electron beam vapor deposition,
It is also possible to use those formed by using a chemical vapor deposition method such as CVD (Chemical Vapor Deposition).

Among them, ethylene vinyl alcohol copolymer (EVOH) and polyvinylidene chloride (PVD)
C), polyacrylonitrile (PAN), nylon and the like are particularly preferable because they have low water vapor transmission rate and low pesticide gas transmission rate. Such a film can be used more effectively by forming a multi-layer such as two layers or three layers with a polyolefin-based film such as polypropylene.

Further, a polymer alloy with a resin having a high gas barrier property against pesticides, or a resin is stretched and oriented,
Improving the gas barrier properties of the film against pesticides is also an effective means. In addition, mica is thinly orientated in a flat plate shape, and a microlayer alloy is used to form a torch path.
It is also possible to use a film (Selar OH Plus: manufactured by DuPont) whose gas barrier property is improved by a hous path).

When a plastic film is used, the water permeation rate and the gas permeation rate of pesticides decrease in proportion to the thickness, but if it is too thick, it becomes harder not only physically, but also higher in cost. Not preferred. Conversely, if it is too thin, not only will the water permeation rate and gas permeation rate increase as described above, but also the physical strength will decrease, and it will not be used as an exterior material. Therefore, the thickness of the film used in the present invention is preferably about 10 to 1000 μm,
About 100 μm is more preferable.

Hereinafter, chlorpicrin will be specifically described as an example of a pesticide volatile at room temperature which can be used in the present invention, but other pesticides can be similarly applied.

The chlorpicrin formulated in the present invention (chlorpicrin preparation) is one in which liquid chlorpicrin is not substantially fluidized. Japanese Patent Application Laid-Open No. 62-19230 discloses such a chlorpicrin preparation.
No. 1, JP-A-59-82303, JP-A-63
Many proposals have already been made, such as JP-A-230602, JP-A-01-172302, and JP-A-6-345605. Specifically, for example, chlorpicrin mixed with a gelling agent to form a gel, powdered or granular solid carrier to be solidified, oil-absorbing polymer absorbed, and further, these A chlorpicrin preparation can be exemplified as a chlorpicrin preparation, which is wrapped with a water-soluble film in each packaging unit, most simply, a bag-like liquid chloropicrin encapsulated in a liquid state in a bag or a container-like water-soluble film enclosed in a container. . Among them, those obtained by mixing and gelling ultrafine silica and chloropicrin, those obtained by absorbing chloropicrin on an oil-absorbing carrier such as starch, and those obtained by covering these with a water-soluble film or enclosing them in a bag of the film. The formulation prepared as described above is environmentally friendly and is excellent in terms of formulation safety. Among them, starch partially decomposed products are particularly excellent. Chlorpicrin is hardly adsorbed on soil particles and has high oil-absorbing ability.When applied to soil, the active ingredient of the preparation is released quickly into the soil.After application, the carrier dissolves in water and is degraded by microorganisms in the soil. Because it is easy. As a water-soluble film for forming a package or the like, polyvinyl alcohol or water-soluble paper is preferably used.

Although there is no critical limitation on the chlorpicrin content in the chlorpicrin formulated in the present invention,
Usually, those having a chlorpicrin content of 5 to 99% by weight are suitably used. Also, there is no problem even if other pesticide components are mixed in the formulated chlorpicrin.

There is no limitation on the shape of the chlorpicrin (chloropicrin preparation) formulated in the present invention, but those wrapped with a water-soluble film are exemplified by rectangles, cylinders, spheres, and the like. A ribbon-shaped or string-shaped piece in which the pieces are connected in a straight line or a plane is preferably used because the application operation can be simplified.

A plurality of individual chlorpicrin preparations produced in this manner are collected or formed into a ribbon and wound on a reel (the flange may be circular or square), or a ribbon. Is folded and packaged and sealed using the above-mentioned exterior material to form a chlorpicrin preparation package. When a plastic film is used as the exterior material, it is preferable that chlorpicrin as an agricultural chemical has the above-mentioned physical properties in terms of the gas transmission rate and the moisture permeability. For example, polyethylene (20 μm) / nylon (30 μm) / polyethylene (20 μm) or polypropylene (20 μm) / E
VOH (40 μm) / polypropylene (40 μm) or polypropylene (40 μm) / PVDC (30 μm)
m) / polyethylene (20 μm) or a plastic film having a three-layer structure such as polypropylene (40 μm) / PAN (20 μm) / polyethylene (20 μm).

Examples in which the above-mentioned plastic film having a three-layer structure of polyethylene (20 μm) / nylon (30 μm) / polyethylene (20 μm) will be described in more detail with reference to examples.

[0023]

EXAMPLE 3.0 g of a chlorpicrin stock solution (manufactured by Mitsui Toatsu Chemicals, purity: 99.5%) was placed in a 4 × 15 cm square bag made of polyvinyl alcohol film KA40 (manufactured by Aicello), heat-sealed, and chlorpicrin was sealed. An agent package (chloropicrin preparation) was obtained. This was designated as formulation A.
The formulation A was connected to 160 bags and wound around a reel having a core diameter of 76 mm and a flange diameter of 330 mm. This was designated as formulation B. A schematic diagram of Formulation B is shown in FIG. Formulation A
Were connected to each other and folded by 15 cm (for three preparations). This was designated as formulation C. A schematic diagram of the preparation C is shown in FIG.

Chlorpicrin stock solution (manufactured by Mitsui Toatsu Chemicals, Inc .:
2.5 g of dextrin (Max 1000, manufactured by Matsutani Chemical Co., Ltd.) was added to 3.0 g of 3.0 g (purity: 99.5%) and kneaded. The mixture was placed in a 4 × 15 cm square bag made of polyvinyl alcohol film KA40 (manufactured by Aicello), and heated. Sealing was performed to obtain a chlorpicrin agent package, which was designated as formulation D.> 160 bags of formulation D were connected and wound around a reel having a core diameter of 76 mm and a flange diameter of 330 mm. Formulation E
And A schematic diagram of the preparation E is shown in FIG. Formulation D with 1
Sixty bags were connected and folded at a length of 15 cm (for three preparations). This was designated as formulation F. A schematic diagram of Formulation F is shown in FIG.

Formulations A and D were each 160, and Formulations B, C, E and F were one by one using the polyethylene (20
μm) / nylon (30 μm) / polyethylene (20 μm)
m) A package (chlorpicrin preparation package) was packaged and sealed together with the reel, using a plastic film having a three-layer structure as an exterior material. In FIG. 3, reference numeral 60 denotes a chlorpicrin preparation package.

Example 1 Ten packages each containing the preparations A to F were packed in a cardboard container 50 of 60 cm × 40 cm × 36 cm and 8 mm in thickness as shown in FIG. 3 and packed. An insole with a thickness of 4 mm was inserted between the packages. After being dropped from a place having a height of 3 m, it was examined whether or not the preparation in each package was broken and the contents leaked. The results are shown in [Table 1]. If any of the preparations leaked, it was indicated by x, and if none of the preparations leaked, it was indicated by o.

Example 2 Ten packages each containing the preparations A to F were packed in a cardboard box having a size of 60 cm × 36 cm × 36 cm and a thickness of 8 mm in the same manner as in Example 1. No insole was inserted between the packages. After being dropped from a place having a height of 3 m, it was examined whether or not the preparation in each package was broken and the contents leaked. The results are shown in [Table 1]. If any of the preparations leaked, it was indicated by x, and if none of the preparations leaked, it was indicated by o.

Comparative Example 1 Ten packages each containing the preparations A to F were packed in a cardboard box having a size of 60 cm × 36 cm × 36 cm and a thickness of 3 mm in the same manner as in Example 1. No insole was inserted between the packages. After being dropped from a place having a height of 3 m, it was examined whether or not the preparation in each package was broken and the contents leaked. The results are shown in [Table 1]. If any of the preparations leaked, it was indicated by x, and if none of the preparations leaked, it was indicated by o.

[0029]

[Table 1]

Example 3 160 preparations A and D were prepared,
The pieces were packed in a cardboard container having a size of 60 cm × 40 cm × 36 cm and a thickness of 8 mm and packed. Note that a film in which a 50-nm-thick polyethylene film and an aluminum layer was formed by sputtering to a thickness of 50 nm was attached to the inner surface of the cardboard container with an adhesive. Chlorpicrin odor coming out through the container was checked. The results are shown in [Table 2]. Those having a chlorpicrin odor were indicated by x, and those having no chlorpicrin odor were indicated by ○.

COMPARATIVE EXAMPLE 2 Formulations A and D were each 160
The pieces were packed in a cardboard container having a size of 60 cm × 40 cm × 36 cm and a thickness of 8 mm, and packed as in Example 3. Note that no film was attached to the cardboard container. Chlorpicrin odor coming out through the container was checked. The results are shown in [Table 2]. Those having a chlorpicrin odor were indicated by x, and those having no chlorpicrin odor were indicated by ○.

[0032]

[Table 2]

[0033]

Industrial Applicability According to the present invention, a method for transporting and preserving a pesticide formulation of a pesticide having volatility at room temperature with reduced volatility and safe for general distribution, and a pesticide formulation package used therefor, A corrugated container can be provided. That is, by storing the pesticide formulation in this way, it was possible to provide a method for transporting and preserving the pesticide formulation that is safe and excellent in storage stability even in the distribution process without leaking the pesticidal active ingredient to the outside. .

[Brief description of the drawings]

FIG. 1. Ribbon-shaped preparation wound on a reel

FIG. 2 shows a ribbon-shaped preparation having a folded structure.

Fig. 3 Packaging method for ribbon-shaped preparations

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Flange 20 Reel 30 Ribbon-shaped preparation 40 Plastic film 50 Corrugated cardboard container 60 Ribbon-shaped preparation (Chlorpicrin preparation package) covered and packaged by covering with an exterior material

Continued on the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location B65D 85/82 B65D 85/82

Claims (7)

[Claims] 1. A pesticide having a volatile property at room temperature is formulated to form a pesticide formulation having reduced volatility, and the pesticide formulation is further packaged and sealed using an exterior material to form a pesticide formulation package. A method for transporting and storing pesticides, wherein the package is accommodated in a cardboard container having a thickness of 4 mm or more. 2. The transportation and storage method according to claim 1, wherein the inside of the cardboard is covered with a plastic film. 3. The transportation and storage method according to claim 2, wherein the plastic film covering the inside of the cardboard is a plastic film having a metal layer. 4. A pesticide which is volatile at room temperature is one of chlorpicrin, 1,3-dichloropropene, dichlorodiisopropyl ether and methyl isothiocyanate.
The method according to any one of claims 1 to 3, wherein the method is a combination of two or more species. 5. The transportation and storage method according to claim 1, further comprising an insole inside the cardboard. 6. A package for use in the method according to any one of claims 1 to 5, wherein a pesticide having volatility at room temperature is formulated into a pesticide formulation having reduced volatility, wherein the pesticide formulation is used. Agrochemical formulation package that is further packaged and enclosed using exterior materials. 7. A cardboard container having a thickness of 4 mm or more for accommodating the agrochemical preparation package according to claim 6.