KR101131038B1 - Herbicidal composition containing glyphosate in the form of a stable aqueous suspension - Google Patents

Abstract

PURPOSE: A stable herbicide composition of aqueous suspension containing glyphosate is provided to improve psychological satisfaction. CONSTITUTION: A stable herbicide composition of aqueous suspension contains glyphosate salt. The composition also contains polyoxyalkylene alkyl ether, polyoxy ethylene sorbitan fatty acid ester; or polyoxyalkylene alkyl amine, alkyl polyglucoside, or surfactant organic or inorganic salt of tetra alkyl ammonium as an effect enhancing agent. The composition further contains dispersion agent, antifoaming agent, thickening agent, antiseptic, anti-freezing agent, or water.

Description

Stable aqueous suspension herbicide composition containing glyphosate {HERBICIDAL COMPOSITION CONTAINING GLYPHOSATE IN THE FORM OF A STABLE AQUEOUS SUSPENSION}

The present invention relates to an aqueous suspension herbicide composition which is physicochemically stable even in a high concentration electrolyte solution such as glyphosate. More particularly, the present invention relates to agricultural herbicide compositions in the form of a physicochemically stable aqueous suspension prepared by mixing glyphosate salt and saflufenacyl as an active herbicide with an effect enhancer.

Glyphosate salts and saflufenacyl among the agricultural herbicide active ingredients are known to have a herbicidal effect throughout broadleaf, flowering and weeds. In particular, glyphosate salts are relatively inexpensive and widely used herbicides, whereas the herbicidal effect is very slowly expressed, which makes it difficult to use as an effective weed control agent. In order to solve this problem, efforts have been made to efficiently control weeds by combining the herbicide active ingredient saflufenacyl with a glyphosate salt (see for example WO 2009/156322).

However, the known techniques produce glyphosate salts and saflufenacyl in the form of single-package formulations, mainly for the purpose of increasing the rainfastness of glyphosate, or glyphosate and saflufenacyl formulations. Reference is made to a tank mix method which is prepared separately and mixed with water at a constant rate immediately before application. However, in the single package formulation of the glyphosate salt and saflufenacyl, a specific example of a method of formulating a single package is not disclosed.

In formulating glyphosate salts and saflufenacyl into herbicide compositions in the form of single-package formulations, there are known problems with physicochemical instability and biological efficacy. That is, the glyphosate salt as the herbicide active ingredient consists of a very high aqueous electrolyte solution. Therefore, saflufenacyl, a herbicide active ingredient in suspended state coexisting in an aqueous phase containing glyphosate salts, is physicochemically very unstable and thus mutual layer separation and particle growth between active ingredients occurs continuously. Making the herbicide compositions in the form of stable single-package formulations containing both glyphosate salts and saflufenacyl is very difficult. In addition, in terms of biological efficacy, the herbicidal composition (in particular, fast-acting) of such a herbicide composition is not sufficient, and commercial approaches are difficult.

Thus, the present inventors intensively studied a stable, single-package formulation in the form of an aqueous suspension in which glyphosate salts and saflufenacyl coexist as herbicide active ingredients, and surprisingly physically when formulated with the addition of an effect enhancer in combination with a specific surfactant. Chemically very stable and excellent herbicidal effect and the medicinal effect is quickly expressed to find that it is possible to manufacture a herbicide composition beneficial to the herbicide work, which is an essential solution in cultivating crops and completed the present invention.

WO 2009/156322 (A METHOD FOR ENHANCING THE RAINFASTNESS OF GLYPHOSATE; December 30, 2009)

It is an object of the present invention to prepare a herbicide composition formulation comprising a glyphosate salt and saflufenacyl as an active ingredient, which is physicochemically stable, has excellent herbicidal effect, and quickly shows its efficacy, and a method for preparing the same. To provide.

In addition, it is an object of the present invention to complete a pre-mixed one pack formulation of a mixture of glyphosate salt and saflufenacyl active ingredient at the same time to increase the efficiency of weeding operations to agricultural workers.

A stable aqueous suspension herbicide composition containing a glyphosate according to the present invention comprises a glyphosate salt and saflufenacyl as active ingredients, and as an effect enhancer, (a) polyoxyalkylene alkyl ether; (b) polyoxyethylene sorbitan fatty acid esters; And (c) at least one surfactant selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium.

Further, according to another aspect of the present invention, the herbicide composition of the present invention, in addition to the herbicidal active ingredient and the effect enhancer, includes a humectant, a dispersant, an antifoaming agent, a thickener, a preservative, an antifreeze and water.

According to another aspect of the present invention, the herbicide composition of the present invention, 20 to 45% by weight of a glyphosate salt; Saflufenacyl 0.4-3% by weight; 1-30% by weight of effect enhancer; 0.01 to 5 wt% humectant; 0.01 to 10% by weight of dispersant; Antifoaming agent 0.01-1% by weight; 0.01 to 7 wt% thickener; 0.01 to 1 wt% preservative; Antifreeze 1-10%; And it consists of 10 to 60% by weight of water.

The effect enhancer, based on 100% by weight of the effect enhancer, (a) 25 to 35% by weight of polyoxyalkylene alkyl ether; (b) 5-15% polyoxyethylene sorbitan fatty acid ester; (c) 50 to 60% by weight of one or more surfactants selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium.

The thickener may include one or more organic polymer thickeners selected from the group consisting of gum derivatives, cellulose derivatives, starches, and water-soluble starch derivatives; And at least one solid fine powder thickener selected from the group consisting of montmorillonite-based mineral fine powder, soft silica, and attapulgite.

According to another aspect of the present invention, there is provided a method for preparing a stable aqueous suspension herbicide composition containing glyphosate,

Mixing saflufenacyl, a herbicide active ingredient, a wetting agent, a dispersing agent, an antifoaming agent, a solid fine powder thickener, and water, followed by wet grinding to grind to an average particle size of 0.1 to 30 µm (step 1);

Preparing an organic thickener by mixing the organic polymer thickener, the preservative, and water, followed by stirring;

After mixing the glyphosate salt with the product of the first step,

(a) polyoxyalkylene alkyl ethers;

(b) polyoxyethylene sorbitan fatty acid esters; And

(c) an effect enhancer comprising at least one surfactant selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium; And mixing water to produce a herbicide composition (step 3).

Hereinafter, a look at the configuration of the present invention in more detail.

In the present invention, the herbicide active ingredient means an active ingredient showing an activity capable of removing unwanted weeds, among which “glyphosate salt” is N- (phosphono, which is “glyphosate” as shown in Chemical Formula 1 below. As various salts of methyl) glycine (N- (phosphonomethyl) glycine: CAS RN 1071-83-6), preferably, isopropyl ammonium salt, potassium salt, ammonium salt, diammonium salt, dimethyl ammonium salt, sesquisodium salt , “Saplufenacyl” is N ′-[2-chloro-4-fluoro-5- (3-methyl-2,6-dioxo-4- (trifluoromethyl) -3 , 6-dihydro-1 (2H) -pyrimidinyl) benzoyl] -N-isopropyl-N-methylsulphamide (N '-[2-chloro-4-fluoro-5- (3-methyl-2, 6-dioxo-4- (trifluoromethyl) -3,6-dihydro-1 (2H) -pyrimidinyl) benzoyl] -N-isopropyl-N-methylsulfamide: CAS RN 372137-35-4).

C ₃ H ₈ NO ₅ P (mw: 169.1)

C ₁₇ H ₁₇ ClF ₄ N ₄ O ₅ S (mw: 500.9)

In the present invention, "effect enhancer" means an effect enhancer in terms of biological and physicochemical aspects. Biological effect enhancement means that when we expect the herbicidal effect using the herbicidal active ingredient, which is the intended purpose of the present invention, by adding the effect enhancer, it is possible to further increase the herbicidal efficiency (weed control%) and speed up the effect expression. In order to enhance the physicochemical effect, other components in the same phase as the high concentration electrolyte solution of glyphosate lose the electrostatic repulsive force and do not settle, separate layers or grow particles, and maintain mutually stable suspension state. It means to make it possible.

In the present invention, as an effect enhancer, (a) a polyoxyalkylene alkylether, and (b) a polyoxyethylene sorbitan fatty acid ester, and (c) a nonionic surfactant. Polyoxyalkylene alkyl amines and alkyl polyglucosides are used in combination with one or more of organic or inorganic salts of tetra alkyl ammonium as cationic surfactants. When the surfactant is used in combination, glyphosate and saflufenacyl, which are the herbicide active ingredients, are very stable in physicochemical properties, and a herbicide composition having an excellent herbicidal effect and an effect of rapidly expressing the drug can be obtained. .

As polyoxyalkylene alkyl ether of the said (a) component, Preferably, polyoxyethylene alkyl ether or polyoxypropylene alkyl ether is used. More specifically, the preferable component is a case where 2-30 mol of ethylene oxide or propylene oxide is imposed on the saturated or unsaturated alcohol which has 8-24 carbon atoms of an alkyl chain.

As polyoxyethylene sorbitan fatty acid ester of the said (b) component, Preferably, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan monostearate, or polyoxy Ethylene sorbitan monolaurate is used.

As polyoxyalkylene alkyl amine of the said (c) component, Preferably, polyoxyethylene alkyl amine or polyoxypropylene alkyl amine is used. More specifically, the preferable component is a case where the alkyl chain has 8 to 24 carbon atoms and imposes 2 to 30 moles of ethylene oxide or propylene oxide.

As the alkyl polyglucoside of the component (c), preferably an alkyl polyglucoside having 8 to 18 carbon atoms and a degree of polymerization of 1.2 to 2.5 is used.

The organic or inorganic salt of tetra alkyl ammonium, which is a cationic surfactant in the component (c), is preferably an alkyl chain consisting of 1 to 20 carbons, hydroxyethyl, In the form of hydroxypropyl, 2-hydroxypolyethoxylate, the salt is -Cl, -Br, -acetate, -CH ₃ OSO ₃ , -C ₂ H ₅ OSO _3, etc. And specific examples thereof include stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium methosulfate and the like.

In the present invention, a humectant and a dispersant may be used to include the herbicide active ingredient saflufenacyl in a water based formulation while simultaneously milling and suspending it to a state of several μm or less. Preferred humectants include sodium disulfosuccinate, low molecular weight naphthalene formaldehyde condensates, and dispersants such as phosphating or sulfated forms of polyoxyethylene tristyryl phenyl ethers, condensation of naphthalene formaldehyde in polymers. Water, acrylic acid polymers, and the like.

Thickeners are organic polymer thickeners, such as gum derivatives such as xanthan gum and arabia gum, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, and the like. Cellulose derivatives, starch or water-soluble starch derivatives, and are solid fine powder thickeners such as montmorillonite-based mineral fine powders such as bentonite, and pyrogenic such as hydrophilic or hydrophobic fumed silica. Silica, attapulgite, and the like. Each of these thickeners may be used alone, but when the combination of 2% by weight or less of organic polymer and 5% by weight or less of thickener on a solid powder is used in combination, the polymer performs crosslinking role between the fine particles, thereby increasing the thickening effect. Especially valid.

Moreover, additives, such as an antifoamer, a preservative, and an antifreeze, which are necessary for aqueous suspension preparation can be further added to the herbicide composition of this invention.

As the antifoaming agent, a silicone antifoaming agent such as Rhodorsil Antifoam 432 may be used, but is not limited thereto. An antifoaming agent generally used in agrochemical compositions may be used.

As the preservative, materials such as Preventol and Proxel may be used, but the material used in the conventional pesticide composition may be used without being limited thereto.

As the antifreeze agent, glycols such as ethylene glycol, propylene glycol, dipropylene glycol, glycerol, urea, and the like may be used, but are not limited thereto, and materials commonly used in agrochemical compositions may be used.

In addition, a colorant may be added as an additive as needed, and the colorant may be titanium dioxide, carbon black, zinc oxide, blue pigment, permanent red FGR, and the like, but is not limited thereto.

The herbicide composition of the present invention is preferably 20 to 45% by weight glyphosate salt, 0.4 to 3% by weight saflufenacyl, 1 to 30% by weight effect enhancer, 0.01 to 5% by weight as a herbicide active ingredient Humectant, 0.01 to 10 wt% dispersant, 0.01 to 1 wt% defoamer, 0.01 to 7 wt% thickener, 0.01 to 1 wt% preservative, 1 to 10 wt% antifreeze and 10 to 60 wt% It contains water.

The effect enhancer, more preferably 10 to 30% by weight, most preferably 15 to 30% by weight, with respect to 100% by weight of the total of the effect enhancer, each component content of (a) polyoxyalkylene alkyl ether 25 to 35% by weight; (b) 5-15% polyoxyethylene sorbitan fatty acid ester; (c) glyphosate, which is an herbicide active ingredient when it is composed of 50 to 60% by weight of one or more surfactants selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium The salts and saflufenacyl are physicochemically stable and their medicaments are expressed rapidly.

The method for preparing a stable aqueous suspension herbicide composition containing the glyphosate of the present invention is first mixed with saflufenacyl, a herbicide active ingredient, a moisturizer, a dispersant, an antifoaming agent, a solid fine powder thickener, and water, followed by a microsphere. It is pulverized by passing through a pearl mill, a dynomill, a sand mill, or the like containing beads, and pulverized so that the average particle diameter of saflufenacyl is 0.1 to 30 µm (step 1).

Then, the organic polymer thickener, preservative, and water are mixed and stirred to prepare an organic thickener (step 2).

The product and glyphosate salt of the first step, (a) polyoxyalkylene alkyl ether; (b) polyoxyethylene sorbitan fatty acid esters; And (c) at least one surfactant selected from the group consisting of polyoxyalkylene alkyl amines, alkyl polyglucosides, and organic or inorganic salts of tetraalkyl ammonium, followed by mixing an antifreeze agent, The organic thickener and water obtained in the two steps are mixed homogeneously to produce a herbicide composition.

The aqueous suspension herbicide composition according to the present invention is physicochemically very stable, in addition to the effect of improving herbicidal efficiency, the speed of expression is rapid, increasing labor efficiency and physically difficult weeding work for agricultural workers, and psychological satisfaction. Can improve.

1 is a flow chart showing a method for producing the herbicide composition of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In the following Examples and Comparative Examples, unless otherwise indicated,% is by weight, and the glyphosate salt used contains glyphosate isopropylamine, which contains 62% by weight of active ingredient, and saflufenacyl is 93. Contains by weight of active ingredient.

< Example  1 to 5 and Comparative example  1 to 10

Preparation of Herbicide Composition

First, in the ratios shown in Tables 1 and 2, saflufenacyl, a herbicide active ingredient, a wetting agent, a dispersant, an antifoaming agent, a solid fine powder thickener, and water (using 5 to 15% of the total amount of water used) are mixed and wet grinding ( Dinomil, KDL-A Type) to maintain an average particle diameter of 1.5 ~ 3㎛ Saflufenacil. As a next step, an organic thickener was prepared using a homogenizer (IKA / T-25 basic) after mixing an organic polymer thickener, a preservative, and water (using 5-10% of the total amount of water used). To the wet milled product, the herbicide active ingredient glyphosate salt, the effect enhancer, the antifoaming agent, the antifreeze agent and the organic thickener were added and the excess water was added to adjust the total composition to 100% by weight, and then sufficiently mixed. The herbicide composition was completed in the form of a pre-mixed one pack formulation in which glyphosate and saflufenacyl were mixed simultaneously.

Example One 2 3 4 5  Saflufenacil 0.8 0.8 0.8 0.8 0.8
Humectants Sodium disulfosuccinate 0.1 0.1 0.1 Naphthalene Formaldehyde Condensate 0.1 0.1
Dispersant Phosphate of polyoxyethylene tristyrylphenyl ether 0.3 0.2 0.1 0.15 0.25  Antifoam Rhodorsil antifoam 432 0.1 0.1 0.1 0.1 0.1

Thickener Attapulgite 2 1.8 Fumed silica 1.8 1.5 2.0 Xanthan gum 0.18 0.3 0.15 0.18 Methylcellulose
(Methyl cellulose) 0.3  Glyphosate-IPA salts 24 24 24 24 24



effect
Enhancer

(a) LA9 ^{1 )} 6 6 TDA9 ^{2 )} 6 6 CE10 ^{3 )} 6
(b) Tw80 ^{4 )} 2 2 2 Tw20 ^{5 )} 2 2


(c) TM15 ^{6 )} 10 LM10 ^{7 )} 10 Stearyl Trimethyl Ammonium Chloride
(Stearyl trimethyl ammonium chloride) 10 Stearyl Trimethyl Ammonium Methosulfate
Stearyl trimethyl ammonium
methosulfate) 10 Lauryl Polyglucoside
(lauryl polyglucoside) 10  antiseptic  Proxel 0.1 0.1 0.1 0.1 0.1  Antifreeze  Propylene glycol 5 5 5 5 5  water Rest Rest Rest Rest Rest  Totals 100 100 100 100 100 1) LA9: Polyoxyethylene lauryl ether (Add 9 moles of ethylene oxide)
2) TDA9: Polyoxyethylene isotridecyl ether (Add 9 moles of ethylene oxide)
3) CE10: Polyoxyethylene cetyl ether (add 10 moles of ethylene oxide)
4) TW80: Poloxyethylene sorbitan monooleate
5) TW20: Poloxyethylene sorbitan monolaurate
6) TM15: Polyoxyethylene tallow amine (add 15 moles of ethylene oxide)
7) LM10: Polyoxyethylene lauryl amine (Add 10 moles of ethylene oxide)

Comparative example One 2 3 4 5 6 7 8 9 10 Saflufenacil 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 Humectants Sodium disulfosuccinate 0.1 0.1 0.1 0.1 0.1 0.1 Naphthalene Formaldehyde Condensate 0.1 0.1 0.1 0.1 Dispersant Phosphate of polyoxyethylenetristyryl phenyl ether 0.3 0.2 0.1 0.3 0.2 0.1 0.15 0.25 Antifoam
Rhodorsil antifoam 432
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1

Thickener Attapulgite
(Attapulgite) 2 1.8 2 1.8 Fumed silica
(Fumed silica) 1.8 1.5 2.0 1.8 1.5 2.0 Xanthan gum 0.18 0.3 0.15 0.18 0.18 0.3 0.15 0.18 Methyl cellulose 0.3 0.3 Glyphosate salt
(Glyphosate-IPA salts) 24 24 24 24 24 24 24 24 24 24




Effect enhancers
(a) LA9 ^{1 )} 18 5 TDA9 ^{2 )} CE10 ^{3 )}
(b) Tw80 ^{4 )} 3 18 Tw20 ^{5 )} 3 13

(c) TM15 ^{6 )} LM10 ^{7 )} 18 Stearyl Trimethyl Ammonium Chloride
(Stearyl trimethyl ammonium chloride)
15 Stearyl Trimethyl Ammonium Methosulfate
(Stearyl trimethyl ammonium methosulfate) Lauryl polyglucoside
15

Etc Polyoxyethylenetristyrylphenyl ether 18 Tributylphenylpolyglycol ether 18 Lauryl ether sulfate 18 antiseptic Proxel 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Antifreeze Propylene glycol
(Propylene glycol) 5 5 5 5 5 5 5 5 5 5 water Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Totals 100 100 100 100 100 100 100 100 100 100 1) LA9: Polyoxyethylene lauryl ether (Add 9 moles of ethylene oxide)
2) TDA9: Polyoxyethylene isotridecyl ether (Add 9 moles of ethylene oxide)
3) CE10: Polyoxyethylene cetyl ether (add 10 moles of ethylene oxide)
4) TW80: Poloxyethylene sorbitan monooleate
5) TW20: Poloxyethylene sorbitan monolaurate
6) TM15: Polyoxyethylene tallow amine (add 15 moles of ethylene oxide)
7) LM10: Polyoxyethylene lauryl amine (Add 10 moles of ethylene oxide)

Hereinafter, the physicochemical stability and biological effects of the herbicide composition of the present invention will be described through specific evaluation tests.

<Evaluation test>

300 ml each of the herbicide compositions of Examples and Comparative Examples were sealed in a plastic pesticide container and stored in a 54 ° C. thermostat for 6 weeks, followed by changes in particle size, storage stability, and suspensibility. And biological activity. This evaluation factor is a fact that everyone in the art recognizes that it is an important evaluation item in the manufacture of pesticide composition exhibiting excellent efficacy.

1.particle size

Particles of the herbicide composition means the particle size of the saplufenacyl, which is a pesticide active ingredient suspended in water, the physical size of the pesticide is secured by maintaining the particle size of the pesticide active at the time of the initial manufacturing and at the same time to express biological sustained efficacy Can be. The particle size was measured using a laser particle size measuring instrument (Mastersizer2000) which can be measured by a laser diffraction method. The results are shown in Table 3.

2. Storage stability

<Physical stability>

The herbicide composition is a form in which glyphosate salt, saflufenacyl, which is a high concentration electrolyte solution, is coexisted in water, and solid sapfenacyl particles lose electrostatic repulsion and are deposited on the bottom of the pesticide container during storage or layered. It is natural that commercial separation is not possible unless severe separation occurs. Storage stability measured the state after storing the herbicide composition for 6 weeks in the 54 ℃ thermostat (regarded as 3 years at room temperature in the pesticide control law) and the results are shown in Table 3.

<Chemical Stability>

The change of the content of the pesticide active ingredient contained in the herbicide composition was measured under severe conditions (storage for 6 weeks in 54 ℃ thermostat). This is because little or no change in the content of the herbicide active ingredient should occur in order to exert its efficacy over time. Samples of each Example and Comparative Example were measured in the pesticide process analysis method (glyphosate salt: spectrophotometry method, saflufenacyl: HPLC method) to measure the initial content and stored for 6 weeks in a 54 ℃ thermostat composition The content of the pesticide active ingredient present in the sample was measured using the same analyzer. The test results are shown in Table 3 below.

3. Suspension ( Suspensibility )

In the method of using the herbicide composition, 500 ml to 1000 ml of the herbicide composition per 10 a of the control object is diluted in 40 to 100 liters of water and sprayed for a predetermined time. Therefore, it is natural that the herbicide composition diluted in water for a certain time should be distributed homogeneously throughout the water without sedimentation at the bottom of the dilution vessel, and this phenomenon is called suspension in the art. In particular, the pesticide composition with excellent suspension can be spread evenly over the entire area to be controlled to expect the desired drug efficacy. The suspension properties of the herbicide compositions of Examples and Comparative Examples were measured and the results are shown in Table 3.

Example Comparative example One 2 3 4 5 One 2 3 4 5 6 7 8 9 10 particle
size
(Μm) ¹⁾ first
At the time of manufacture 2.0 1.9 2.0 2.1 1.8 2.0 2.0 2.1 2.0 1.8 1.0 1.8 2.0 2.1 1.9 54 ℃ 6 weeks
After saving 2.0 1.9 2.0 2.1 1.8 28.0 20.0 29.5 30.2 31.4 27.5 30.7 45.2 48.3 50.0 Save
stability Precipitation ^{2 )} 0 0 0 0 0 5 4 4 5 7 6 6 8 10 10 Delamination ^{3 )} 0 0 0 0 0 30 40 40 35 45 32 37 50 68 70 Chemical
Stability ^{4 )}
(content
Rate of change
%)  Glyphosate Salt
0.5
1.0
0.7
0.4
0.8
0.5
1.1
0.9
0.8
0.8
0.9
1.0
1.1
1.2
1.5 Saflu
Penacil 1.1 1.2 0.9 1.0 0.9 17 20 21 25 1.2 1.2 1.7 5.0 4.2 2.8
Flexibility ^{5 )} first
At the time of manufacture 90 95 92 91 96 67 65 64 57 55 50 48 50 47 43 54 ℃ 6 weeks
After saving 89 93 90 90 94 36 45 37 39 40 21 18 20 19 17

1) Particle size: means average particle size

2) Precipitation (%) = (Weight of Precipitate / Weight of Entire Herbicide Composition) x 100

3) Layer separation (%) = (height of the liquid phase transparently separated / the height of the entire herbicide composition) x 100

4) Chemical stability (%) = (At first production value-54 ° C 6 weeks after storage) / Initial analysis value × 100

5) Suspension test method = level the sample active ingredient (A) g in a beaker 50 ml of water at 20 ° C. is added to the mixture, which is then stirred and dispersed evenly, transferred to a 250 ml stopper measuring cylinder, and water (20 ° C.) is added to make 250 ml. After standing in this way for 15 minutes, inverted strongly 30 times in 1 minute, mix well and leave for 5 minutes. Afterwards, 25ml volumetric pipette (volumetric pipet) is slowly immersed in the liquid so that the end is in the center of the liquid, and 25ml of the sample solution is gently sucked to measure the content of the active ingredient or (B) g or the analysis of the active ingredient is impossible. Weigh the dry matter and calculate the suspension rate by the following formula.

(The closer the water is to 100, the more the herbicide composition diluted in water is distributed homogeneously throughout the water without sedimentation at the bottom of the dilution vessel.)

As confirmed in Table 3, as the effect enhancer, the herbicide compositions of Examples 1 to 5 containing all of the components (a), (b) and (c) are physicochemically even in a high concentration electrolyte solution such as glyphosate salt. It is very stable, making it possible to manufacture a pesticide composition which can maintain a good state for a long time (more than 3 years).

4. Biological Activity Test

In order to carry out a biopharmaceutical investigation test of the herbicide composition according to the present invention, a large number of flowers and weeds, wild ginsengs, wild ginsengs, wild ginsengs, and perilla flowers, which occur in orchards and non-cultivated lands, are divided. The drug was treated as well. Investigations of medicinal effects were conducted after 3 days, 5 days, 10 days, and 40 days after treatment for flower and weeds, and after 4 hours, 1 day, 3 days, and 40 days after broad-leaf weed, respectively. In (No drug expression), it was determined as 100 (drug efficacy was expressed and weed ground complete examination) and is shown in Tables 5 and 6.

Test Herbicide active ingredient
Content (w / w%) Usage per 10a (1,000m ² ) When and
How to use Dose Diluent (water) amount Example 1 Glyphosate Salt ... 24
Saflufenacil .......... 0.8 500 ml 100ℓ





When weed grows enough, we process to weed foliage Example 2 Homology Homology Homology Example 3 Homology Homology Homology Example 4 Homology Homology Homology Example 5 Homology Homology Homology Comparative Example 1 Homology Homology Homology Comparative Example 2 Homology Homology Homology Comparative Example 3 Homology Homology Homology Comparative Example 4 Homology Homology Homology Comparative Example 5 Homology Homology Homology Comparative Example 6 Homology Homology Homology Comparative Example 7 Homology Homology Homology Comparative Example 8 Homology Homology Homology Comparative Example 9 Homology Homology Homology Comparative Example 10 Homology Homology Homology

Blood, the control against the lees
After lapse of treatment 3 days later 5 days later 10 days later 40 days later Example 1 60 100 100 100 Example 2 62 95 100 100 Example 3 57 98 100 100 Example 4 61 100 100 100 Example 5 59 98 100 100 Comparative Example 1 0 35 75 100 Comparative Example 2 0 33 74 100 Comparative Example 3 0 34 76 100 Comparative Example 4 0 34 79 100 Comparative Example 5 0 40 80 100 Comparative Example 6 0 34 78 100 Comparative Example 7 0 35 78 100 Comparative Example 8 0 27 65 92 Comparative Example 9 0 30 60 95 Comparative Example 10 0 28 58 90

The control on the Korean ginseng vine, the king's mince
After lapse of treatment 4 hours later 1 day later 3 days later 40 days later Example 1 50 95 100 100 Example 2 45 95 100 100 Example 3 48 100 100 100 Example 4 50 95 100 100 Example 5 52 95 100 100 Comparative Example 1 0 45 75 100 Comparative Example 2 0 47 80 100 Comparative Example 3 0 49 78 100 Comparative Example 4 0 50 79 100 Comparative Example 5 0 49 80 100 Comparative Example 6 0 46 77 100 Comparative Example 7 0 48 76 100 Comparative Example 8 0 35 64 95 Comparative Example 9 0 37 70 89 Comparative Example 10 0 40 69 90

As shown in Table 5, the herbicide compositions of Examples 1 to 5 in the flowers and weeds, such as blood and barley, were expressed after 3 days of drug spraying and then completely killed after 10 days, whereas the herbicide compositions of Comparative Examples 1 to 10 The drug was slowly expressed after 5 days after drug spraying, and it was not completely tested until 40 days later. In addition, as shown in Table 6, the herbicide composition of Examples 1 to 5 in broad-leaf weeds, such as ginseng vines, royal vines, horseradish flowers, the drug is expressed after 4 hours after spraying the drug was completely killed after 3 days, Comparative Example 1 The herbicide composition of ˜10 was slowly expressed after 40 days of drug efficacy after 1 day of drug spraying and completely died. In the above results, the herbicide compositions of Examples 1 to 5, in which the effect enhancers containing the components (a), (b) and (c) of the present invention were used, the herbicidal efficiency was improved, and the efficacy of the herbicide active ingredient was rapidly increased. It was confirmed that there is an effect to be expressed.

Claims (6)

Herbicide active ingredients include glyphosate salt and saflufenacyl,
As an effect enhancer,
(a) polyoxyalkylene alkyl ethers;
(b) polyoxyethylene sorbitan fatty acid esters; And
(c) a stable aqueous suspension herbicide containing glyphosate comprising at least one surfactant selected from the group consisting of polyoxyalkylene alkyl amines, alkyl polyglucosides, and organic or inorganic salts of tetraalkyl ammonium. Composition. The method of claim 1, wherein the herbicide composition,
A stable aqueous suspension herbicide composition containing glyphosate, further comprising a humectant, a dispersant, an antifoam, a thickener, a preservative, an antifreeze and water. The method of claim 2, wherein the herbicide composition,
20 to 45% by weight of a glyphosate salt;
Saflufenacyl 0.4-3% by weight;
1-30% by weight of effect enhancer;
0.01 to 5 wt% humectant;
0.01 to 10% by weight of dispersant;
Antifoaming agent 0.01-1% by weight;
0.01 to 7 wt% thickener;
0.01 to 1 wt% preservative;
Antifreeze 1-10%; And
A stable aqueous suspension herbicide composition containing glyphosate, comprising 10 to 60% by weight of water. The method according to any one of claims 1 to 3, wherein the effect enhancer is based on 100% by weight of the effect enhancer,
(a) 25 to 35 weight percent of a polyoxyalkylene alkyl ether;
(b) 5-15% polyoxyethylene sorbitan fatty acid ester; And
(c) glyphosate comprising from 50 to 60% by weight of at least one surfactant selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium Stable aqueous suspension herbicide composition. The method according to claim 2 or 3, wherein the thickener,
At least one organopolymer thickener selected from the group consisting of gum derivatives, cellulose derivatives, starch, and water soluble starch derivatives; And
A stable aqueous suspension herbicide composition containing glyphosate comprising montmorillonite-based mineral fine powder, soft silica, and at least one solid fine powder thickener selected from the group consisting of attapulgite. A process for preparing a stable aqueous suspension herbicide composition containing glyphosate,
Pulverizing so that the average particle diameter of saflufenacyl is 0.1-30 μm by mixing it with a humectant, a dispersant, an antifoaming agent, a solid fine powder thickener, and water to saflufenacyl, which is an active herbicide (step 1);
Preparing an organic thickener by mixing the organic polymer thickener, the preservative, and water, followed by stirring;
After mixing the glyphosate salt with the product of the first step,
(a) polyoxyalkylene alkyl ethers; (b) polyoxyethylene sorbitan fatty acid esters; And (c) at least one surfactant selected from the group consisting of organic or inorganic salts of polyoxyalkylene alkyl amines, alkyl polyglucosides, and tetraalkyl ammonium; Mixing the mucus and water to produce a herbicide composition (step 3);
Method for producing a stable aqueous suspension herbicide composition containing glyphosate comprising a.

Images