Dispersible oil suspending agent containing anilofos and penoxsulam and preparation method of dispersible oil suspending agent

Abstract

The invention relates to the technical field of pesticide compounding, in particular to an anilofos and penoxsulam dispersible oil suspending agent and a preparation method thereof. The dispersible oil suspending agent is prepared from the following components in percentage by weight: 23.5% of anilofos technical, 1.5% of penoxsulam technical, 10.0% of calcium dodecyl benzene sulfonate, 6% of fatty alcohol-polyoxyethylene ether, 6% of organic bentonite, 2% of white carbon black and the balance of methyl oleate, the mass fraction of penoxsulam in the penoxsulam technical is greater than or equal to 98.0%, and the mass fraction of calcium dodecyl benzene sulfonate in the penoxsulam technical is greater than or equal to 10.0%. The pH value of the anilofos active compound is 4.0 to 7.0, and the pH value of the penoxsulam active compound is 4.0 to 7.0; the invention provides the efficient, stable and environment-friendly anilofos and penoxsulam dispersible oil suspending agent and the preparation method thereof, the suspending agent has an excellent weeding effect, the pesticide consumption can be remarkably reduced, the negative influence on the environment is reduced, meanwhile, the preparation process is simple, the operation is easy, and the suspending agent is suitable for large-scale production and use.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide compounding, and in particular to a dispersible oil suspension of safflower and penoxsulam and a preparation method thereof. Background Art

[0002] Dispersible oil suspension is a type of pesticide formulation, which is a highly dispersed and stable suspension system with a non-aqueous system (oil-based) as the dispersion medium. Oils generally include vegetable oils and their derivatives or mineral oils, etc., which replace traditional organic solvents and have the characteristics of low toxicity, easy degradation, and environmental friendliness. In addition, oil, as a diluent carrier, has good adhesion and spreading properties, and is easy to adhere to the wax layer on the surface of plants. It can enhance the effect of some highly lipophilic pesticides (such as nicosulfuron herbicide).

[0003] For example: After searching, the existing patent (publication number: CN114946870A) discloses a highly efficient and environmentally friendly penoxsulam and sulfonepyraclostrobin dispersible oil suspension, and its preparation method and application. The penoxsulam and sulfonepyraclostrobin dispersible oil suspension is composed of the following raw materials in weight percentage: penoxsulam 1-15%, sulfonepyraclostrobin 1-15%, composite emulsifier 1-25%, safener 0.05-5%, dispersant 0.1-3%, viscosity regulator 0.05-2%, and the balance is oil. The composite emulsifier is composed of isomeric tridecanol polyoxyethylene ether, calcium dodecylbenzene sulfonate, and nonionic hydroxy polyethylene oxide propylene oxide block copolymer TERMUL5500), the ratio of isomeric tridecanol polyoxyethylene ether, calcium dodecylbenzene sulfonate, and nonionic hydroxy polyethylene oxide propylene oxide block copolymer (TERMUL5500) is 1:1-5:5-10, and the safety agent is 2-methoxy-N-[[4-[[(methylamino)carbonyl]amino]phenyl]sulfonyl]benzamide. The patented preparation has a reasonable component system, good emulsification effect, stable performance, high safety, etc., and can avoid the pollution of the environment by harmful solvents in the emulsifiable concentrate, and has good social and ecological benefits.

[0004] However, the herbicidal effect of the suspension of the above patent needs to be improved. Not only is the preparation process complicated and the production cost high, but the stability is poor and it is not easy to store and use. In addition, there is no registered dispersible oil suspension of the combination of safflower and penoxsulam on the market. Both safflower and penoxsulam are widely used paddy field herbicides, and each of them has unique herbicidal effects and characteristics. However, when used alone, there may be problems such as incomplete herbicidal effect or large dosage.

[0005] In order to further improve the weed control effect and reduce the amount of pesticide used, the present invention compounds safflower and penoxsulam and prepares them into a dispersible oil suspension. The present invention creatively combines safflower and penoxsulam to prepare a dispersible oil suspension, which has the characteristics of broad spectrum, high efficiency, low toxicity, etc., has broad application prospects in paddy field weed control, and provides a safer and more efficient weed control solution for agricultural production. Summary of the invention

[0006] The purpose of the present invention is to solve the defects in the prior art and to propose a dispersible oil suspension of safflower and penoxsulam and a preparation method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A dispersible oil suspension of safflower and penoxsulam consists of the following components in percentage by weight: 23.5% of safflower technical, 1.5% of penoxsulam technical, 10.0% of calcium dodecylbenzene sulfonate, 6% of fatty alcohol polyoxyethylene ether, 6% of organic bentonite and 2% of white carbon black, and the balance is methyl oleate.

[0009] Furthermore, the mass fraction of safov in the safov technical is ≥90.0%, and the structural formula of safov is:

[0010]

[0011] The mass fraction of penoxsulam in the penoxsulam technical is ≥98.0%, and the structural formula of penoxsulam is:

[0012]

[0013] The structural formula of the calcium dodecylbenzene sulfonate is:

[0014]

[0015] The structural formula of the fatty alcohol polyoxyethylene ether is:

[0016]

[0017] The structural formula of the organobentonite is:

[0018]

[0019] The structural formula of the white carbon black is:

[0020] O=Si=O;

[0021] The structural formula of the methyl oleate is:

[0022]

[0023] Furthermore, the pH value of the cypermethrin technical is 4.0-7.0, and the pH value of the penoxsulam technical is 4.0-7.0.

[0024] A method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam, wherein the specific steps of the method for preparing the dispersible oil suspension concentrate of safflower and penoxsulam are as follows:

[0025] Step 1: 261.11 kg of safflower technical (90% safflower content), 15.31 kg of penoxsulam technical (98% penoxsulam content), 100 kg of calcium dodecylbenzenesulfonate, 20 kg of white carbon black and 483.58 kg of methyl oleate are accurately weighed in proportion, and are successively put into a shearing kettle, mixed, stirred and sheared for 10 minutes to evenly disperse the technical, ensure that the liquid is evenly suspended, and obtain a technical without lumps and large particles;

[0026] Step 2: Accurately weigh 60 kg of fatty alcohol polyoxyethylene ether and 60 kg of organic bentonite, put them into a shearing kettle and continue stirring and shearing for 10 minutes to mix the additive and the original drug evenly to obtain a sample;

[0027] Step 3: Turn on the circulating cooling water of the sand mill, then introduce the sample in the shear kettle into the sand mill for sand milling, control the sand milling speed, and finally discharge the sample to obtain a semi-finished product;

[0028] Step 4: Let the semi-finished product stand for more than 24 hours, and after all indicators are tested and qualified, package it to obtain the dispersible oil suspension concentrate of safamidis and penoxsulam.

[0029] Furthermore, the discharge temperature of the sand mill in step three is below 32°C, the inlet temperature of the cooling water of the sand mill is controlled below 15°C, and the outlet temperature is controlled below 20°C to prevent sample agglomeration due to excessively high temperature.

[0030] Furthermore, the filling amount of zirconium beads in the sand mill in step three is maintained at 65-80%.

[0031] Furthermore, the static holding tool for the semi-finished product described in step 4 is a ton barrel.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The weed control effect is significantly improved, and various weeds in rice fields can be effectively controlled;

[0034] (2) The use of pesticides is reduced, which reduces the negative impact of pesticides on the environment and ecology;

[0035] (3) The suspension has good stability and is easy to store and use;

[0036] (4) The preparation process is simple and easy to operate, suitable for large-scale production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0038] Figure 1 The present invention provides a process flow chart for the preparation of a dispersible oil suspension concentrate of safflower and penoxsulam. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Embodiment 1:

[0042] See also Figure 1 The present invention provides a technical solution: a method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam, wherein the specific steps of the method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam are as follows:

[0043] Step 1: accurately weigh safflower technical (90% safflower content), penoxsulam technical (98% penoxsulam content), calcium dodecylbenzene sulfonate, white carbon black and methyl oleate in the ratio of 23.5% safflower technical, 1.5% penoxsulam technical, 10.0% calcium dodecylbenzene sulfonate, 6% fatty alcohol polyoxyethylene ether, 6% organic bentonite and 2% white carbon black, and the balance is methyl oleate, and sequentially put them into a shearing kettle, mix and stir, and shear for 10 minutes to evenly disperse the technical, ensure that the liquid is evenly suspended, and obtain a technical without lumps and large particles;

[0044] Step 2: Accurately weigh 60 kg of fatty alcohol polyoxyethylene ether and 60 kg of organic bentonite, put them into a shearing kettle and continue stirring and shearing for 10 minutes to mix the additive and the original drug evenly to obtain a sample;

[0045] Step 3: Turn on the circulating cooling water of the sand mill, then introduce the sample in the shear kettle into the sand mill for sand milling, control the sand milling speed, and finally discharge the sample to obtain a semi-finished product;

[0046] Step 4: Let the semi-finished product stand for more than 24 hours, and after all indicators are tested and qualified, package it to obtain the dispersible oil suspension concentrate of safamidis and penoxsulam.

[0047] Embodiment 2:

[0048] See also Figure 1 The present invention provides a technical solution: a method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam, wherein the specific steps of the method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam are as follows:

[0049] Step 1: accurately weigh safflower technical (90% safflower content), penoxsulam technical (98% penoxsulam content), calcium dodecylbenzene sulfonate, white carbon black and methyl oleate in the ratio of 24% safflower technical, 2% penoxsulam technical, 10.5% calcium dodecylbenzene sulfonate, 6.5% fatty alcohol polyoxyethylene ether, 6.5% organic bentonite and 2.5% white carbon black, and the balance is methyl oleate, and sequentially put them into a shearing kettle, mix and stir, and shear for 10 minutes to evenly disperse the technical, ensure that the liquid is evenly suspended, and obtain a technical without lumps and large particles;

[0050] Step 2: Accurately weigh 60 kg of fatty alcohol polyoxyethylene ether and 60 kg of organic bentonite, put them into a shearing kettle and continue stirring and shearing for 10 minutes to mix the additive and the original drug evenly to obtain a sample;

[0051] Step 3: Turn on the circulating cooling water of the sand mill, then introduce the sample in the shear kettle into the sand mill for sand milling, control the sand milling speed, and finally discharge the sample to obtain a semi-finished product;

[0052] Step 4: Let the semi-finished product stand for more than 24 hours, and after all indicators are tested and qualified, package it to obtain the dispersible oil suspension concentrate of safamidis and penoxsulam.

[0053] Embodiment 3:

[0054] See also Figure 1 The present invention provides a technical solution: a method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam, wherein the specific steps of the method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam are as follows:

[0055] Step 1: accurately weigh safflower technical (90% safflower content), penoxsulam technical (98% penoxsulam content), calcium dodecylbenzene sulfonate, white carbon black and methyl oleate in the ratio of 24.5% safflower technical, 2.5% penoxsulam technical, 11.0% calcium dodecylbenzene sulfonate, 7% fatty alcohol polyoxyethylene ether, 7% organic bentonite and 3% white carbon black, and the balance is methyl oleate, and sequentially put them into a shearing kettle, mix and stir, and shear for 10 minutes to evenly disperse the technical, ensure that the liquid is evenly suspended, and obtain a technical without lumps and large particles;

[0056] Step 2: Accurately weigh 60 kg of fatty alcohol polyoxyethylene ether and 60 kg of organic bentonite, put them into a shearing kettle and continue stirring and shearing for 10 minutes to mix the additive and the original drug evenly to obtain a sample;

[0057] Step 3: Turn on the circulating cooling water of the sand mill, then introduce the sample in the shear kettle into the sand mill for sand milling, control the sand milling speed, and finally discharge the sample to obtain a semi-finished product;

[0058] Step 4: Let the semi-finished product stand for more than 24 hours, and after all indicators are tested and qualified, package it to obtain the dispersible oil suspension concentrate of safamidis and penoxsulam.

[0059] Comparative Example 1:

[0060] This comparative example is a herbicidal composition prepared from a herbicidal composition containing cyhalofop-butyl disclosed in Chinese Patent No. CN102860320A.

[0061] Two portions of the dispersible oil suspension prepared in Examples 1-3 were respectively extracted, denoted as A1, A2, B1, B2, C1 and C2, and then mixed with two portions of the herbicidal composition of Comparative Example 1, denoted as E1 and E2, and tested for activity against barnyardgrass at room temperature, and the following data were measured:

[0062]

[0063] From the comparison of the above table data, we can see that:

[0064] The dispersible oil suspensions prepared in Examples 1, 2 and 3 have the following advantages over the herbicidal composition prepared in Comparative Example 1:

[0065] (1) The weed control effect is significantly improved, and various weeds in rice fields can be effectively controlled;

[0066] (2) The use of pesticides is reduced, which reduces the negative impact of pesticides on the environment and ecology;

[0067] (3) The suspension has good stability and is easy to store and use;

[0068] (4) The preparation process is simple and easy to operate, suitable for large-scale production and use.

[0069] Therefore, through the preparation and performance testing of the examples, as well as the verification of the field trials, the present invention provides an efficient, stable, and environmentally friendly dispersible oil suspension of safflower and penoxsulam. The suspension has excellent weed control effects, can significantly reduce the amount of pesticides used, and reduce the negative impact on the environment. At the same time, the preparation process is simple, easy to operate, and suitable for large-scale production and use.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dispersible oil suspension concentrate of safflower and penoxsulam, characterized in that: The invention is composed of the following components in percentage by weight: 23.5% of oxafoate technical, 1.5% of penoxsulam technical, 10.0% of calcium dodecylbenzene sulfonate, 6% of fatty alcohol polyoxyethylene ether, 6% of organic bentonite and 2% of white carbon black, and the balance is methyl oleate.

2. The dispersible oil suspension concentrate of safflower and penoxsulam according to claim 1, characterized in that: The mass fraction of safov in the safov technical is ≥90.0%, and the structural formula of safov is: The mass fraction of penoxsulam in the penoxsulam technical is ≥98.0%, and the structural formula of penoxsulam is: The structural formula of the calcium dodecylbenzene sulfonate is: The structural formula of the fatty alcohol polyoxyethylene ether is: The structural formula of the organobentonite is: The structural formula of the white carbon black is: O ＝ Si ＝ O ； The structural formula of the methyl oleate is:

3. The dispersible oil suspension concentrate of safflower and penoxsulam according to claim 1, characterized in that: The pH value of the cypermethrin technical is 4.0-7.0, and the pH value of the penoxsulam technical is 4.0-7.

0.

4. A method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam, characterized in that: The specific steps of the preparation method of the safflower and penoxsulam dispersible oil suspension are as follows: Step 1: 261.11 kg of safflower technical (90% safflower content), 15.31 kg of penoxsulam technical (98% penoxsulam content), 100 kg of calcium dodecylbenzenesulfonate, 20 kg of white carbon black and 483.58 kg of methyl oleate are accurately weighed in proportion, and are successively put into a shearing kettle, mixed, stirred and sheared for 10 minutes to evenly disperse the technical, ensure that the liquid is evenly suspended, and obtain a technical without lumps and large particles; Step 2: Accurately weigh 60 kg of fatty alcohol polyoxyethylene ether and 60 kg of organic bentonite, put them into a shearing kettle and continue stirring and shearing for 10 minutes to mix the additive and the original drug evenly to obtain a sample; Step 3: Turn on the circulating cooling water of the sand mill, then introduce the sample in the shear kettle into the sand mill for sand milling, control the sand milling speed, and finally discharge the sample to obtain a semi-finished product; Step 4: Let the semi-finished product stand for more than 24 hours, and after all indicators are tested and qualified, package it to obtain the dispersible oil suspension concentrate of safamidis and penoxsulam.

5. The method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam according to claim 4, characterized in that: The discharge temperature of the sand mill described in step 3 is below 32°C, the inlet temperature of the cooling water of the sand mill is controlled below 15°C, and the outlet temperature is controlled below 20°C to prevent sample agglomeration due to excessively high temperature.

6. The method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam according to claim 4, characterized in that: The filling amount of zirconium beads in the sand mill in step 3 is maintained at 65-80%.

7. The method for preparing a dispersible oil suspension concentrate of safflower and penoxsulam according to claim 4, characterized in that: The static container for the semi-finished product described in step 4 is a ton barrel.

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