JPH05904A - Foam-like herbicide formulation and method for applying the same preparation - Google Patents

Abstract

PURPOSE:To obtain a herbicide formulation capable of readily confirming application conditions by sight, by blending a liquid containing a herbicide with a surfactant at a specific amount and capable of readily, simply and properly applying and, simultaneously, applicable as a foam, which is effective and high in safety. CONSTITUTION:A surfactant (a) or the surfactant (a) and one or more kinds of low boiling point solvents (b) are added preferably at ratios of the component (a) of 0.1-20wt.% and the component (b) of 1.0-20wt.% based on total composition to a liquid containing one or more kinds of herbicide from water soluble herbicide such as bialahphos, oil soluble herbicide such as napropamide and slightly soluble herbicide such as simazine, preferably at a ratio of 0.05-20wt.% based on total composition and, as necessary, further containing one or more kinds of stabilizer, spreader, sizing agent, dye, insecticide, germicide, perfume, fertilizer to provide the objective herbicide formulation applicable as a foam by utilizing a pressurizing device such as aerosol, trigger type, jetter, hand pump, electric pump, an excel-system or an environ-system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to foam (foam,
The present invention relates to a herbicidal preparation having so-called fine bubbles and capable of being applied to a fluid emulsion foam liquid state) and a method for applying the herbicidal preparation.

[0002]

2. Description of the Related Art Heretofore, no herbicidal formulation applicable to such a foam has been found. Conventional herbicidal preparations include solid agents such as granules, powders, plates, and sticks, which are used as solids when applied, and water solutions, emulsions, wettable powders, and liquids, which are used as liquids when applied. , Flowable agent, AL
There are liquid agents such as agents (solutions that have already been diluted to usable concentrations), and each has its advantages and disadvantages. Further, an aerosol herbicidal formulation is also being developed, for example, Japanese Patent Laid-Open No.
-101539 discloses a liquid herbicidal composition containing a specific organic compound (herbicide) together with a propellant (propellant) and the like.

[0003]

As described above, conventional herbicidal preparations include solid preparations such as granules, powders, plates and sticks, water solutions, emulsions, wettable powders, liquid preparations, flowable preparations,
There are forms such as a liquid agent such as an AL agent and an aerosol agent, but each of the dosage forms has the following disadvantages and advantages. First of all, solid agents are easy to use because they can be applied as they are, but in small-scale applications such as those used at home, the weighing operation tends to be incomplete and the application rate becomes ambiguous, making it difficult to grasp the appropriate application rate. . Also, because it is a solid agent,
It was difficult to apply evenly, and there was uneven distribution.
On the other hand, liquid agents have the advantage that they can be sprayed evenly on a watering can, but since they are concentrated types, they must be diluted. There is a drawback that the dose tends to be ambiguous and it is difficult to apply it properly.
In addition, it was necessary to wash the used instruments and containers after use. Furthermore, when weeds were treated with a foliar-treated herbicide, most of the drug solution flowed down to the soil, resulting in a large loss of drug.

On the other hand, the aerosol is a convenient dosage form that can be applied as it is and is easy to use, and it is not necessary to wash the instruments and containers used. However, in the case of non-foam specifications, when treated with weeds, most of the chemicals flowed down to the soil, resulting in a large loss of chemicals. Since it was difficult to determine whether or not the treatment had been performed, the presence or absence of application was ambiguous and the proper effect was not obtained. Further, since the sprayed particles are small, there is a large amount of scattering (drift), and there is a risk of damaging useful plants other than weeds and inhaling humans and animals, especially users. Therefore, there has been a demand for a herbicidal formulation that can be applied appropriately to a small-scale application for home use.

Therefore, an object of the present invention is to provide a herbicidal preparation which can be applied in the form of foam and a method for applying the herbicidal preparation, which can easily confirm the application condition by visual observation without the above-mentioned drawbacks of the conventional herbicidal preparations. is there. Another object of the present invention is to provide a herbicidal formulation which can be applied easily, easily and properly, and which can be applied in a foam form having high efficiency and safety, and a method for applying the same, in relation to the above object. is there.

[0006]

According to the present invention, in order to achieve the above object, as a basic constitution, an interface containing 0.1 to 20% by weight of the total composition in a liquid containing a herbicide is used. There is provided a herbicidal preparation characterized in that it contains an active agent and can be applied in the form of foam. That is, the present invention provides a foam type herbicidal formulation, which has the advantages of both solid and liquid agents depending on the hardness (or viscosity) of the foam, and eliminates the drawbacks of so-called spray type aerosol herbicidal formulations. It is something to do. That is, by applying the composition in the form of foam (foam having fine bubbles and having fluidity), the presence or absence of application can be easily confirmed visually.

As the herbicide, for example, any of water-soluble, oil-soluble or sparingly soluble herbicides can be used. Examples of the water-soluble herbicides include bialaphos, glufosinate, glyphosate, 2,4-PA, MCP sodium salt, tetrapion, TCBA sodium salt, triclopyr (triethylammonium = 3,5,6-trichloro-2-pyridyloxyacetate). ), Hexazinone, paraquat, diquat and the like are used. Further, as the oil-soluble herbicides, for example, napropamide, naproanilide, pendimethalin, fluazifop, vernalate, bench ocarb, linuron, ashram, carbutyrate, DCMU, thiazafluron, bensulfuron-methyl, atrazine, metribuzin, dazomet,
Herbicides such as pyrazoxifene and amiprophosmethyl can be used. Further, as the sparingly soluble herbicide, for example, simazine, terbacil and the like can be used.

When the herbicide is further viewed from the spray type, bialaphos, glufosinate, glyphosate, 2,4-P
A, foliar spray type herbicides such as MCP sodium salt and soil spray type herbicides such as tetrapion, napropamide and pendimethalin. Each of the above-mentioned herbicides can be used alone or in combination of two or more, and each solution has a concentration of 0.05 to 20% by weight, preferably 0.1 to 10% by weight of the total composition. Used in. When the concentration of the herbicide is less than 0.05% by weight, the herbicidal effect is not generally sufficient as will be apparent from the examples described later, while
If it exceeds 20% by weight, foam formation is affected, which is not preferable. The surfactants used for forming the foam are roughly classified into cationic surfactants, anionic surfactants, nonionic surfactants and amphoteric surfactants. As a result of examining the composition of the foam with these surfactants, preferred foams were formed. Therefore, various surfactants such as nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and sucrose fatty acid ester surfactants are used as surfactants. it can.

Specifically, sodium polyoxyethylene alkyl sulphate, calcium dodecylbenzene sulphonate, alkaline earth metal salts of alkyl benzene sulphonates, higher fatty acid alkaline earth metal salts, triethanolamine salts of alkyl sulphates, polyoxyethylene alkyl sulphates. Anionic surfactants such as sodium phenyl ether sulfate and sodium alkyl diphenyl ether disulfonate, cationic surfactants such as dodecylamine acetate, alkyl trimethyl ammonium halide, polyoxyethylene higher fatty acid amine salt, polyoxyethylene alkyl Ethers, sorbitan monooleate, sorbitan laurate, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyethylene glycol Fatty acid esters, nonionic surfactants such as polyoxyethylene alkylphenyl ethers, amphoteric surfactants such as alkylpolyaminoethylglycine hydrochloride, lauric acid monosugar esters, oleic acid monosugar esters, Sucrose fatty acid ester-based surfactants such as stearic acid monosugar esters can be used. However, it is not limited to these as long as they can be dispersed and can form a foam. The amount of surfactant is 0.1 to 20% by weight of the total composition, preferably 1 to 10% by weight. When the concentration of the surfactant is less than 0.1% by weight, it is difficult to form a foam as will be apparent from the examples described below, while when it exceeds 20% by weight, it remains in the soil or is cultivated after weeding. It is not preferable because there are problems such as phytotoxicity to useful plants. As a diluent for dissolving or suspending the herbicide and the surfactant, water, alcohols, kerosene,
Glycol ethers such as ethylene glycol, ethyl cellosolve, butyl carbitol, 3-methyl-3-methoxybutanol and the like can be used.

Methods of forming foam include methods that utilize an aerosol and methods that utilize a spray device. In the case of the method using an aerosol, the herbicide solution containing the above-mentioned herbicide, surfactant and diluent is enclosed in an aerosol container equipped with a propellant together with a propellant, and the button of the propellant is pushed. Easy to apply. As the propellant used in this case, water-soluble dimethyl ether, oil-soluble liquefied petroleum gas, liquefied gas such as CFCs,
There are compressed gases such as carbon dioxide, nitrogen, nitrous oxide, and air. However, as long as a foam can be formed, the foam is not limited to these and can be used in combination. When the aerosol content liquid has a high polarity such as water, a gas with a low polarity such as liquefied petroleum gas is used, and when the aerosol content liquid has a low polarity,
By using a gas having a large polarity such as diethyl ether, it is possible to obtain a so-called post-foaming type foam aerosol, which forms a stable foam after the aerosol liquid adheres to an object when the aerosol is jetted. In the case of liquefied petroleum gas, the amount of propellant is up to 50% by weight of the total composition, preferably 5 to 15% by weight. In the case of compressed gas, it is 2% by weight or less, preferably 1 to 2% by weight of the total composition.

On the other hand, a spray device may be used as a method for forming a foam. When using these,
The herbicide solution is contained in a container, and the container is provided with a trigger sprayer,
Equipped with a pressure spray device such as hand pump, electric pump,
It can be applied by utilizing these pressure spraying devices. In the case of using a spraying device, unlike the aerosol, the air and the herbicide liquid can be well mixed by adjusting the injection mechanism, and the foam can be easily obtained. As the pressurized spraying device, a hand pump, an electric pump, a spraying mechanism using compressed gas, a container having a mechanism capable of forming a foam, and the like can be used without limitation as long as the foam can be formed. .

Further, the herbicidal preparation of the present invention can be applied by utilizing each system known as so-called Excel system and Enviro system. The Excel system includes a flexible bag housed in a substantially radially expandable tubular member, and a fluid product is pressure-filled in the bag to expand the tubular member in the radial direction. The fluidizing product is jetted by utilizing the contracting action of the above, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-118163 and Japanese Patent Publication No. 1-252626 (International Publication No. WO82 / 0).
0780), Japanese Examined Patent Publication No. 2-60586 (International Publication No. WO82 / 02034), etc., and for details, refer to these respective publications. In addition, with the enviro system, an inflatable pressurizing bag containing a chemical reagent for generating a gas by a reaction is contained in a container,
The container is divided into a product storage area and a gas generation area in the pressurizing bag, the product storage area is filled with a fluid product, and the reaction is gradually carried out by the reaction of the chemical reagent in the pressurizing bag (for example, gas generation). Divide the area into several compartments and generate gas (for example, by reacting the chemical reagents in each compartment in stages) (for example, carbon dioxide is generated by the reaction between sodium bicarbonate and an aqueous citric acid solution), The pressure of the generated gas is used as an injection propulsion force to inject a fluid product. For example, JP-A-64-848.
Japanese Patent No. 78, Japanese Patent Publication No. 1-111468, Japanese Patent Publication No. 2
It is described in Japanese Patent No. 8780, etc., and these respective publications are referred to for details. The Excell system or Enviro system may be used to spray and apply the herbicide solution of the present invention in the form of foam.

However, since these systems can only spray fluid products and essentially have no effervescent element, when applying the herbicidal formulation of the present invention, normal pentane, normal butane, A low boiling point solvent such as isopentane, freon 113, isoprene, cyclopentane, 2,2-dimethylpropane having a boiling point of room temperature (20 ° C.) or lower is 1.0 to 20% by weight, preferably 5 to 10% by weight of the total composition. It is necessary to add the weight% so that it can be sprayed in the form of foam. If the content of the low boiling point solvent is less than 1.0% by weight, it will be impossible to inject and apply the composition in the form of foam, as will be apparent from Tables 10 to 13 below, while if it exceeds 20% by weight, a good foam cannot be formed. Not preferable. Therefore, when the above-mentioned Excel system and Enviro system are used, 0.1 to 2 of the total composition is added to the liquid containing the herbicide.
It is preferable to use a herbicidal solution containing 0% by weight of a surfactant and 1.0 to 20% by weight of a low boiling point solvent. The addition of the low boiling point solvent is effective for facilitating the formation of foam even in a dosage form other than the Excel system and the Enviro system, and the compounding amount in that case is 1.0% by weight.
It may be the following.

Further, in the herbicidal preparation of the present invention, in order to stabilize the active ingredient, carboxymethyl cellulose, a suspending agent such as ethylene glycol, ethylene glycol, ethyl cellosolve, butyl carbitol, 3-methyl- Anti-freezing agents such as glycol ethers such as 3-methoxybutanol and preservatives such as butyl P-hydroxybenzoate can be added, and chemicals for stabilizing the stock solution can be added, and corrosion of the container is prevented. Therefore, a rust preventive such as amyl alcohol or morpholine may be added. Anionic surfactants such as monoglyceride and naturally occurring saponin are also effective as foaming agents. In addition, fatty acid amides, sulfates of iron group metals, sugars such as sorbit and glucose, polyethylene glycols, animal and vegetable oils such as oleic acid and soybean oil and beef tallow, and kerosene for stabilizing foams and adjusting texture. Can be added. It is preferable to add such a stabilizer because a foam having an appropriate hardness (viscosity) can be easily obtained. Further, according to the present invention, various surfactants, glycol ethers, sugars, casein, lime, paraffin, spreading agents such as plant fibers can be added in order to facilitate adhesion of the herbicide to plants. Also, a dye, a fragrance or the like may be added so that the treated state can be clearly confirmed.

[0015]

[Examples] Examples of the present invention are shown below.
Although it will be described physically, the present invention is limited to the following examples.
Not to mention of course. In addition, each example (each
The chemical names of the compounds described in the table below are as follows:
It is as follows.common name       Chemical name Bialafos: L-2-amino-4-[(hydroxy (me
Chill) phosphinoyl] butyryl-L-
Alanyl-L-alanine sodium salt Glufosinate: ammonium = DL-homoalanine-
4-yl (methyl) phosphinate Glyphosate: iso of N- (phosphonomethyl) glycine
Propylamine salt 2,4-PA sodium salt: 2,4-dichlorophenoxy
Sodium salt of siacetic acid MCP sodium salt: 2-methyl-4-chlorphenoki
Sodium salt of siacetic acid Bench-o-curve: S- (4-chlorobenzyl) -N, N
-Diethylthiocarbamate TCBA: 2,3,6-trichloro sodium benzoate Pendimethalin: N- (1-ethylpropyl) -3,
4-dimethyl-2,6-dinitroaniline Tetrapion: 2,2,3,3-tetrafluoropropion
Sodium onate Triclopyr: triethylammonium = 3,5,6-
Trichloro-2-pyridyloxyacetate Naproanilide: α- (2-naphthoxy) propiona
Nirid Fluazifop: Butyl = (RS) -2- [4- (5-
Trifluoromethyl-2-pyridyloxy) phenoxy
Shi] Propionate Ammonium sulfamate: ammonium sulfamate Napropamide: 2- (α-naphthoxy) -N, N-die
Cylpropionamide Simazine: 2-chloro-4,6-bis (ethylamino)
-S-triazine Linuron: 3- (3,4-dichlorophenyl) -1-
Methoxy-1-methylurea Atrazine: 2-chloro-4-ethylamino-6-iso
Propylamino-S-triazine Carbylate: 3- (3,3-dimethylureido) fur
Phenyl = tert-butyl carbamate Terbacyl: 3-tert-butyl-5-chloro-6-
Methyl uracil Ashram: N'-methoxycarbonylsulfanilua
Midodium Diquat: 1,1'-ethylene-2 ', 2-bipyridy
Umdibromide Paraquat: 1,1'-dimethyl-4,4'-bipyridy
Umdi chloride Hexazinone: 3-cyclohexyl-6-dimethylamido
No-1-methyl-1,3,5-triazine-2,4 (1
H, 3H) -dione Tebutyuron: 1- (5-tert-butyl-1,3,3
4-thiadiazol-2-yl) -1,3-dimethylurine
Elementary Ethidimurone: 1- (5-ethylsulfonyl-1,3,3
4-thiadiazol-2-yl) -1,3-dimethylurine
Elementary Examples 1-175 An example of prescription when using an aerosol container is shown.

According to the compositions shown in Tables 1 to 7, various herbicides, surfactants, propellants, etc. were used. First, the herbicide and the surfactant were mixed to form a homogeneous liquid or suspension, Then other ingredients (low temperature anti-caking agent, stabilizer,
Etc.) to make a homogeneous liquid or suspension. Next, a diluent (water) was added to this to obtain a homogeneous emulsion or suspension, which was pressurized and enclosed together with a propellant in an aerosol can to prepare various foam type herbicidal formulations. Each of the obtained aerosol herbicidal formulations was tested for foam formation state and herbicidal effect. Form state is 1 x 1m
The herbicide was sprayed on the floor surface for 5 seconds (corresponding to about 20 g), and judged by the foam formation retention time. Judgment is: ◎ ... form formation retention time 5 minutes or more (very good) ◯ ... form formation retention time 2 to 5 minutes (good) △ ... form formation retention time 1 to 2 minutes (somewhat bad) x ... form formation retention time It took 0 to 1 minute (defective). Moreover, the herbicidal effect is evaluated by the vegetation cover ratio (the ratio of weeds covering the ground) at the 4th week after spraying the herbicide for 5 seconds (corresponding to about 20g) on the site of 1 × 1m, and the next judgment. According to the standard. ◎… Vegetation cover rate 20% or less (very good) ○… Vegetable cover rate 20-40% (good) △… Vegetable cover rate 40-60% (somewhat bad) ×… Vegetable cover rate 60% or more (bad) Table 1 ~ Also shown in Table-7.

(A) Examples 1 to 25 shown in Table 1 show the results of studies using the herbicide bialaphos.
6 shows the examination of the concentration of the surfactant, and Examples 7 to 25 show the examination of the kind of the surfactant. By using 0.1 to 20% by weight of a surfactant, an aerosol herbicidal preparation excellent in foam state and herbicidal effect can be obtained.
It is understood that any of the cationic, zwitterionic and nonionic surfactants can be used.

(B) Examples 26 to 50 shown in Table 2 are
The examination results using the herbicide glufosinate are shown, and the examination of the concentration of the surfactant is shown in Examples 26 to 31, and the examination of Examples 32 to 31.
50 shows a study of the types of surfactants. Examples 1-2 above
As in the case of 5, the use of 0.1 to 20% by weight of a surfactant makes it possible to obtain an aerosol herbicidal preparation excellent in foam state and herbicidal effect, and it can be seen that various surfactants can be used.

(C) Examples 51 to 125 shown in Table-3, Table-4 and Table-5 show studies on the type and concentration of herbicides. In Table 3, Examples 51 to 60 examine the concentration of the herbicide glyphosate, Examples 61 to 70 examine the concentration of the herbicide glyphosinate, and Examples 71 to 75 examine the concentration of the herbicide 2,4-PA. Indicates. In addition, in Table 4, Examples 76 to 85 show a study on the concentration of the herbicide tetrapion, Examples 86 to 95 show a study on the concentration of the herbicide bialaphos, and Examples 96 to 100 show a study on the concentration of the herbicide MCP. . Further, in Table-5, Examples 101 to 110
The study of the type of herbicide is shown in Examples 111-117, the study of multiple formulations of herbicide is shown in Examples 118-125, and the study of propellant dimethyl ether is shown in Examples 118-125.

As shown in Table 3 and Table 4,
In the cases of Examples 51, 61, 76, 86, 96 and 97, the herbicidal effect is poor, but this is because the amount of the herbicide blended is not sufficient. Generally, the amount of herbicide is 0.0
If it is 5% by weight or more, a sufficient herbicidal effect can be obtained, but M
In the case of herbicides such as CP (sodium salt) having relatively weak potency, it is difficult to obtain a sufficient herbicidal effect with a blending amount of 0.05% by weight. In such a case, the blending amount should be slightly increased. It is preferable.

On the other hand, in the cases of Examples 58, 68, 83 and 93, no foam state was obtained, but this is because the blending amount of the herbicide is larger than the blending amount of the surfactant. In such cases, Examples 60, 70, 85 and 9
As shown in 5, good foam conditions are obtained by increasing the amount of surfactant.

(D) Examples 126 to 150 shown in Table 6
Shows the study results of blending various additives with the herbicide, Examples 126 to 137 show blending studies of various additives, and Examples 138 to 150 show studies of kinds and concentrations of propellants. In Examples 142 and 145, a good foam state was not obtained, but this is because the pressure of the propellant was insufficient.

(E) Examples 151 to 175 shown in Table 7
Shows the results of studies in which a stabilizer was added to the herbicide. In this way, a good foam state can be obtained by incorporating the stabilizer.

Examples 176 to 190 Prescription examples when using a spraying device are shown. According to the composition shown in Table-8, the herbicide and the surfactant are first mixed to form a homogeneous liquid or suspension, and then other ingredients (water-soluble polymer, low temperature stabilizer, etc.) are added to the mixture to homogenize it. Make a liquid or suspension. Next, a diluent is added to this to obtain a homogeneous liquid or suspension, and this is a simple spray container for Kadan (500 ml, equipped with a trigger type sprayer, Yoshino Industry Co., Ltd.).
Manufactured) and tested for foam formation and herbicidal effect in the same manner as in Examples 1-175. The results are also shown in Table-8. Good foam condition and herbicidal effect were also obtained by using the above spraying device.

Examples 191-200 Aerosol herbicidal preparations were prepared in the same manner as in Examples 1-175, using the compositions shown in Table-9. Adhesion was then tested using the foam formulations of Examples 191 to 200 and the non-foam formulations shown in Table-9. As a test method, an aerosol container was attached to an automatic aerosol micro-spraying device (made by Yamada Seiki Seisakusho), fixed at four corners with tacks on a wooden frame of 50 × 50 cm, and separated from the floor surface 50 ×. The aerosol container was sprayed toward the center of the 50 cm test paper from above in the vertical direction at a distance of 20 cm for 1 second. Measure the initial weight of the aerosol container and the weight after spraying,
The theoretical adhesion amount (= injection amount × active ingredient content) is calculated from the difference, while the drug is extracted from the sprayed test paper and quantitative analysis is performed to determine the actual adhesion amount, and the adhesion ratio (= actual The amount of adhesion / theoretical amount of adhesion × 100) was calculated. The results are shown in Table-9. As is evident from the results shown in Table-9, the adhesion of the foam formulation was superior to the non-foam formulation. This is because the formulation that does not become a foam had a loss of adhesion to the test paper due to scattering. Incidentally, Examples 191, 192, 198
In the case of ~ 200, the foam state is poor or slightly bad, but this is because in the case of Examples 191,192, the compounding amount of the surfactant is insufficient, while in the case of Examples 198-200. This is because in the case of (2), post-foaming does not occur due to the combination of the water-soluble stock solution and the water-soluble propellant.

(F) Examples 201 to 220 Aerosol herbicidal preparations were prepared in the same manner as in Examples 1 to 175 with the compositions shown in Table 10 and tested for herbicidal effect and foamability. As a result, Examples 204 to 21
5, 217 to 220, the compounding amount of the propellant could be reduced by increasing the compounding amount of the low boiling point solvent. This can improve the filling efficiency of the aerosol. In addition, generally good foamability and herbicidal effect were obtained.

Examples 221 to 280 Herbicidal preparations were prepared according to the compositions shown in Tables 11 to 13. Then, like the aerosol formulation, Excel system (70Z power assembly [200 ml Excel container] made by Takasago International Co., Ltd.) and Enviro system (Glow pack pouch, Glow pack company [USA]
Was used to test the herbicidal effect and foamability. Examples 221 to 240 and 261 to 267 are the test results when using the Enviro system. In Examples 221-228, the compounding amount of the low boiling point solvent was examined. As a result, the mousse having a poor mousse state was obtained as in Examples 221-223, which is considered to be due to lack of foaming property due to the small amount of the low boiling point solvent.
Therefore, it is considered appropriate that the compounding amount of the low boiling point solvent is 1 to 20%. In Examples 229 to 231, the blending of various low boiling point solvents was examined, and all the low boiling point solvents were found to have good foaming properties and herbicidal effects. Examples 232-234 examined various herbicides and low boiling point solvents. Good foaming properties and herbicidal effects were obtained in all cases. Examples 235-237
Investigated herbicides and various surfactants. Good foaming properties and herbicidal effects were obtained in all cases. Example 238-
240 was investigated by combining various herbicides, various surfactants, and various low boiling point solvents. Good foaming properties and herbicidal effects were obtained in all cases. In Examples 261-267, the compounding amount of the surfactant was examined. Although a mousse having a poor mousse was obtained as in Example 261, it is considered that the foaming property was insufficient because the compounding amount of the surfactant was small. If the amount of the surfactant blended is too large, the foam becomes too hard and the jetting state becomes poor. Therefore, it is considered that 0.1-20% is suitable for the blending amount of the surfactant.

Examples 241-260, 268-280
Is the test result when the Excello system was used. In Examples 241-248, the compounding amount of the low boiling point solvent was examined. As a result, a mousse having a poor mousse state was obtained as in Examples 241-243, which is considered to be due to lack of foaming property due to a small amount of the low boiling point solvent. Therefore, the compounding amount of the low boiling point solvent is 1 to 20%.
Is considered appropriate. In Examples 249 to 251, the blending of various low boiling point solvents was examined, and all the low boiling point solvents were found to have good foaming properties and herbicidal effects. Example 252
~ 254 examined various herbicides and low boiling point solvents. Good foaming properties and herbicidal effects were obtained in all cases. Example 25
For 5-257, the herbicides and various surfactants were examined.
Good foaming properties and herbicidal effects were obtained in all cases. Examples 258 to 260 were examined by combining various herbicides, various surfactants, and various low boiling point solvents. Good foaming properties and herbicidal effects were obtained in all cases. Examples 268-280
Examined the blending amount of the surfactant. As a result, Example 2
Nos. 68 and 275 were found to have a poor mousse state, but it is considered that the foamability was insufficient due to the small amount of the surfactant compounded. If the amount of the surfactant blended is too large, the foam becomes too hard and the jetting state becomes poor. Therefore, the blending amount of the surfactant is 0.1
20% is considered appropriate.

[0029]

As described above, according to the herbicidal preparation of the present invention and its application method, it can be applied in the form of foam, and the hardness of the foam can bring advantages of both solid and liquid agents, The following effects and advantages are obtained. (A) In the case of a foliar treatment type herbicide, the herbicide effectively adheres to plants and the effect of the drug increases. (B) In both cases of the foliar-treating type herbicide and the soil-treating type herbicide, the applied amount can be easily confirmed by visual observation, so that there is no fear of repeated spraying and overuse can be avoided. (C) In the case of a foliar-treated herbicide, the foam gradually descends on the surface of the plant with the lapse of time, so that the drug can be applied to the entire aerial part of the plant. (D) Little scattering (drift) and safe for humans and animals, especially for users. (E) The form disappears over time, so it does not spoil the aesthetics. (F) It can be easily and easily applied by using an aerosol formulation or by using a spraying device. (G) By adding a low boiling point solvent, a herbicidal formulation having particularly stable foaming power in the Enviro system and the Excel system can be prepared. (H) As described in claim 3, a fragrance, an insecticide, a bactericide, a plant growth regulator and the like can be added, and the effects of these agents can be effectively utilized together.

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

[Table 3]

[0033]

[Table 4]

[0034]

[Table 5]

[0035]

[Table 6]

[0036]

[Table 7]

[0037]

[Table 8]

[0038]

[Table 9]

[0039]

[Table 10]

[0040]

[Table 11]

[0041]

[Table 12]

[0042]

[Table 13]

[Procedure amendment]

[Submission date] February 10, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

Specifically, sodium polyoxyethylene alkyl sulphate, calcium dodecylbenzene sulphonate, alkaline earth metal salts of alkyl benzene sulphonates, higher fatty acid alkaline earth metal salts, triethanolamine salts of alkyl sulphates, polyoxyethylene alkyl sulphates. Anionic surfactants such as sodium phenyl ether sulfate and sodium alkyl diphenyl ether disulfonate, cationic surfactants such as dodecylamine acetate, alkyl trimethyl ammonium halide, polyoxyethylene higher fatty acid amine salt, polyoxyethylene alkyl Ethers, sorbitan monooleate, sorbitan laurate, polyethylene glycol fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene Nonionic surfactants such as alkylphenyl ethers, alkyl polyamino ethyl amphoteric surface active agents such as glycine hydrochloride, lauric acid mono sugar esters, oleic acid mono sugar esters,
Sucrose fatty acid ester-based surfactants such as stearic acid monosugar esters can be used. However, it is not limited to these as long as they can be dispersed and can form a foam. The amount of surfactant is 0.1 of the total composition.
-20% by weight, preferably 1-10% by weight. When the concentration of the surfactant is less than 0.1% by weight, it is difficult to form a foam as will be apparent from the examples described below, while when it exceeds 20% by weight, it remains in the soil or is cultivated after weeding. It is not preferable because there are problems such as phytotoxicity to useful plants. As a diluent for dissolving or suspending the herbicide and the surfactant, water, alcohols,
Kerosene, ethylene glycol, ethyl cellosolve, butyl carbitol, glycol ethers such as 3-methyl-3-methoxybutanol and the like can be used.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

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However, since these systems can only spray fluid products and essentially have no effervescent element, when applying the herbicidal formulation of the present invention, normal pentane, normal butane, A low boiling point solvent such as isopentane, freon 113, isoprene, cyclopentane, 2,2-dimethylpropane having a boiling point of room temperature (20 ° C.) or lower is 1.0 to 20% by weight, preferably 5 to 10% by weight of the total composition. It is necessary to add the weight% so that it can be sprayed in the form of foam. If the low boiling point solvent is less than 1.0% by weight, it cannot be sprayed and applied in the form of foam as is apparent from Tables 11 to 13 below, while if it exceeds 20% by weight, a good foam cannot be formed. Not preferable. Therefore, when the above-mentioned Excel system and Enviro system are used, 0.1 to 2 of the total composition is added to the liquid containing the herbicide.
It is preferable to use a herbicidal solution containing 0% by weight of a surfactant and 1.0 to 20% by weight of a low boiling point solvent. The addition of the low boiling point solvent is effective for facilitating the formation of foam even in a dosage form other than the Excel system and the Enviro system, and the compounding amount in that case is 1.0% by weight.
It may be the following.

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Further, in the herbicidal preparation of the present invention, in order to stabilize the active ingredient, carboxymethyl cellulose, a suspending agent such as ethylene glycol, ethylene glycol, ethyl cellosolve, butyl carbitol, 3-methyl- Anti-freezing agents such as glycol ethers such as 3-methoxybutanol and preservatives such as butyl P-hydroxybenzoate can be added, and chemicals for stabilizing the stock solution can be added, and corrosion of the container is prevented. for, it is also possible to add an amino alcohol, rust inhibitors such as morpholine. Anionic surfactants such as monoglyceride and naturally occurring saponin are also effective as foaming agents. In addition, fatty acid amides, sulfates of iron group metals, sugars such as sorbit and glucose, polyethylene glycols, animal and vegetable oils such as oleic acid and soybean oil and beef tallow, and kerosene for stabilizing foams and adjusting texture. Can be added. It is preferable to add such a stabilizer because a foam having an appropriate hardness (viscosity) can be easily obtained. Further, according to the present invention, various surfactants, glycol ethers, sugars, casein, lime, paraffin, spreading agents such as plant fibers can be added in order to facilitate adhesion of the herbicide to plants. Also, a dye, a fragrance or the like may be added so that the treated state can be clearly confirmed.

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[0015]

EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but it goes without saying that the present invention is not limited to the following examples. In addition, the chemical name of the compound described by the general name in each Example (each table) is as follows. Generic name Chemical name Biaraphos: L-2-amino-4-[(hydroxy (methyl) phosphinoyl] butyryl-L-alanyl-L-
Alanine sodium salt glufosinate: ammonium = DL-homoalanine-
4-yl (methyl) phosphinate glyphosate: isopropylamine salt of N- (phosphonomethyl) glycine 2,4-PA sodium salt: sodium salt of 2,4-dichlorophenoxyacetic acid MCP sodium salt: 2-methyl-4- Sodium salt of chlorphenoxyacetic acid Bentocarb: S- (4-chlorobenzyl) -N, N
-Diethylthiocarbamate TCBA: 2,3,6-trichlorosodium benzoate pendimethalin: N- (1-ethylpropyl) -3,
4-Dimethyl-2,6-dinitroaniline tetrapion: 2,2,3,3-tetrafluoropropionate sodium triclopyr: triethylammonium = 3,5,6-
Trichloro-2-pyridyloxyacetato naproanilide: α- (2-naphthoxy) propionanilide fluazifop: butyl = (RS) -2- [4- (5-
Trifluoromethyl-2-pyridyloxy) phenoxy] propionate ammonium sulfamate: ammonium sulfamate Napropamide: 2- (α-naphthoxy) -N, N-diethylpropionamide simazine: 2-chloro-4,6- Bis (ethylamino)
-S-triazine linuron: 3- (3,4-dichlorophenyl) -1-
Methoxy-1-methylurea atrazine: 2-chloro-4-ethylamino-6-isopropylamino-S-triazine carbylate: 3- (3,3-dimethylureido) phenyl = tert-butylcarbamate terbacyl: 3-tert -Butyl-5-chloro-6-
Methyluracil ashram: N'-methoxycarbonylsulfanilamide sodium diquat: 1,1'-ethylene-2 ', 2-bipyridinium dibromide paraquat: 1,1'-dimethyl-4,4'-bipyridy
Li um dichloride hexadiene Non: 3-cyclohexyl-6-dimethylamino-1-methyl-1,3,5-triazine-2,4 (1
H, 3H) -dionetebutyuron: 1- (5-tert-butyl-1,3,3)
4-thiadiazol-2-yl) -1,3-dimethylurea ethidimurone: 1- (5-ethylsulfonyl-1,3,3
4-Thiadiazol-2-yl) -1,3-dimethylurea Examples 1 to 175 Formulation examples in the case of using an aerosol container are shown.

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[Table 1]

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─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location A01N 37/10 8930-4H 37/18 Z 8930-4H 37/22 8930-4H 39/04 A 8930 -4H 43/40 102 8930-4H 43/54 C 8930-4H 43/64 8930-4H 43/68 8930-4H 43/82 101 8930-4H 47/12 A 8930-4H 47/36 101 Z 8930-4H 57/20 A 7106-4H (72) Inventor Yoko Yoko Inoue 256-8 Karasawa, Fujisawa City, Kanagawa Prefecture

Claims (9)

[Claims] 1. A liquid containing a herbicide containing 0.1 to 0.1% of the total composition.
A herbicidal composition comprising a surfactant in an amount of 20% by weight and capable of being applied in the form of foam. 2. As a herbicide, bialaphos, glufosinate, glyphosate, 2,4-PA, MCP sodium salt, tetrapion, TCBA sodium salt, triclopyr (triethylammonium = 3,5,6-trichloro-2-pyridyloxyacetate). , Water-soluble herbicides such as hexadinone, paraquat, diquat, napropamide, naproanilide, pendimethalin, fluazihop, vernalate, benchocarb, linuron, ashram, carbutyrate, DCMU, thiazafluron,
At least one herbicide selected from oil-soluble herbicides such as bensulfuron-methyl, atrazine, metribuzin, dazomet, pyrazoxifene, and amiprophos-methyl, and sparingly-soluble herbicides such as simazine and terbacyl is used in the composition of 0.
The herbicidal preparation according to claim 1, wherein the herbicidal preparation is contained in a proportion of 05 to 20% by weight. 3. In addition to the herbicide component, at least one of a stabilizer, a spreading agent, a paste, a pigment, an insecticide, a bactericide, a fragrance, and a fertilizer is contained. The herbicidal preparation according to. 4. The herbicidal preparation according to claim 1, further comprising at least one low boiling point solvent in a proportion of 1.0 to 20% by weight of the total composition. 5. The herbicidal preparation according to any one of claims 1 to 4, wherein the herbicidal preparation is prepared by encapsulating it together with a propellant in an aerosol container equipped with a spraying device and preparing it in the form of an aerosol. 6. A liquid containing a herbicide containing 0.1 to 0.1% of the total composition.
The herbicide liquid prepared by blending a surfactant in a proportion of 20% by weight is enclosed together with a propellant in an aerosol container equipped with a spraying device, and sprayed and applied in the form of a foam. A method for applying the herbicidal preparation according to any one of items. 7. A liquid containing a herbicide containing 0.1 to 0.1% of the total composition.
A herbicide liquid containing 20% by weight of a surfactant is contained in a container, and the container is equipped with a pressurizing device such as a trigger sprayer, a hand pump, and an electric pump. The method of applying the herbicidal preparation according to any one of claims 1 to 4, wherein the method is applied and applied in the form of foam. 8. A flexible bag is housed in a substantially radially expandable tubular member, and the liquid containing a herbicide in the bag has a surface activity of 0.1 to 20% by weight of the total composition. Herbicide prepared by mixing a herbicide and a low boiling point solvent in a proportion of 1.0 to 20% by weight under pressure to expand the tubular member in the radial direction, and use the contracting action of the tubular part to control herbicides. The method of applying the herbicidal preparation according to claim 4, wherein the agent solution is applied in the form of foam. 9. An inflatable pressurizing bag containing a chemical reagent for generating a gas by a reaction is contained in a container, and the container is divided into a product storage area and a gas generating area in the pressurizing bag. In the product storage area, the liquid containing the herbicide contains 0.1 to 20% by weight of the total composition of the surfactant and 1.0 to
A herbicide prepared by blending a low boiling point solvent in a proportion of 20% by weight was filled, and on the other hand, a gas was gradually generated by the reaction of the chemical reagent in the pressurizing bag, and the pressure of this generated gas was used as a jet propulsion force. The method of applying the herbicidal preparation according to claim 4, wherein the herbicidal solution is spray-applied in the form of a foam.