Dispersible oil suspending agent and preparation method thereof

A technology of suspending agent and dispersing oil, which is applied in the field of pesticides, can solve the problems of incomplete and effective control of weeds in paddy fields, residual toxicity of crops in the current season or subsequent crops, and different sensitivity of herbicides, so as to improve the physical and chemical Stability, simple production equipment and methods, and the effect of eliminating dust pollution

Inactive Publication Date: 2017-03-15
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, a single herbicide is limited by the safety selection of crop varieties. At the same time, the herbicide spectrum is not complete when used alone, and the occurrence of weeds in paddy fields cannot be completely and effectively controlled. Moreover, the weed resistance of a single herbicide is also serious.
Some herbicides are sensitive to different varieties of rice, or the field duration is too short, the dosage is too large, or the application is uneven, which may easily cause residual toxicity to the current crop or subsequent crops.

Method used

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  • Dispersible oil suspending agent and preparation method thereof
  • Dispersible oil suspending agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] After adding 480g of methyl oleate into the shear kettle, add 100g of emulsifier alkylphenol polyoxyethylene ether, 20g of wetting agent 2-2-octyl maleate sulfonate, and 20g of dispersant sodium lignosulfonate 30g, organic bentonite 30g, butyl hydroxyanisole 12, silicone defoamer 5g and citric acid 3g, mix and stir, add pretilachlor 260g, propachlor After 40 g of oxadiazone and 20 g of pyrazosulfuron-methyl, shear for 10 to 40 minutes, and then grind with a sand mill until the particle size D90 is less than 5 μm, a light yellow dispersible oil suspension is prepared.

Embodiment 2

[0024] After adding 504g of soybean oil in the shear kettle, add 50g of emulsifier sorbitan monolaurate, 60g of alkylphenol polyoxyethylene ether, and 20g of wetting agent di-sec-octyl maleate sulfonate , dispersant TERSPERSE 2020 dispersant 25g, magnesium aluminum silicate 35g, sodium benzoate 18, organosilicon defoamer 8g and acetic acid 10g, mix and stir, add acrylic acid under stirring at a speed of 1500-10000 rpm in a high-speed shearing machine After 200 g of oxadiazide, 45 g of oxadiazone propargyl, and 25 g of pyrazosulfuron-methyl, cut for 10 to 40 minutes, and grind with a sand mill until the particle size D90 is less than 5 μm, a light yellow dispersible oil suspension is prepared.

Embodiment 3

[0026] After adding rapeseed oil 387g in the shear kettle, add emulsifier alkylphenol polyoxyethylene ether 60g, alkylphenol polyoxyethylene ether sodium sulfate 50g, fatty acid polyoxyethylene ester phosphate 5g, wetting agent cis-butyl Di-sec-octyl enedioic acid sodium sulfonate 45g, dispersant sodium lignin sulfonate 35g, xanthan gum 30g, triphenyl phosphite 45g, silicone defoamer 5g and citric acid 13g, mix and stir at high speed Add 250g of pretilachlor, 50g of propargyl oxadiazone, and 25 grams of pyrazosulfuron-methyl under stirring at the speed of 1500-10000 rpm of the shearing machine, cut for 10-40 minutes, and then grind to the particle size with a sand mill When D90 is less than 5 μm, a dispersible oil suspension is obtained. The technical indexes of pretilachlor, propargyl oxadiazone and pyrazosulfuron-methyl dispersible oil suspension concentrate of the present invention are shown in Table 1.

[0027] Table 1: Technical indicators of pretilachlor, propargyl oxad...

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Abstract

The invention discloses a dispersible oil suspending agent. The dispersible oil suspending agent comprises, by mass, 15-30% of pretilachlor, 3-6% of allylene oxadiazon, 1-3% of pyrazosulfuron-ethyl, 1-8% of dispersing agents, 5-15% of emulsifiers, 0.5-5% of wetting agents, 0.5-5% of thickeners, 0.5-8% of stabilizers, 0.2-2% of defoamers, 0.1-2% of pH regulators and the balance oil-base solvent. The dispersible oil suspending agent has the advantages that the dispersible oil suspending agent has low toxin on human, livestock and beneficial organisms, toxicity of effective components to chemical application persons can be reduced effectively, phytotoxicity of chemicals to target crops can be lowered, prevention effect of herbicide products on weeds and safety of the herbicide products on the crops are improved, and the dispersible oil suspending agent is a low-carbon, environment friendly and safe dosage form.

Description

technical field [0001] The invention belongs to the technical field of pesticides and relates to a herbicide product, in particular to a dispersible oil suspension and a preparation method thereof. Background technique [0002] Pretilachlor, chemical name: 2-chloro-N-(1-methyl-2-methoxyethyl)-N-(2-ethyl-6-methylphenyl)acetamide. It is a special herbicide for paddy fields with high selectivity. It is safe to rice and has a wide spectrum of weed control. It is suitable for controlling barnyardgrass, bald barnyardgrass, daughter, goosegrass, cow felt, Alisma narrow leaves, water amaranth, special-shaped sedge, broken rice sedge, clove Polygonum, bermudagrass and other annual grasses and broad-leaved rice weeds. Is a cell division inhibitor. It is usually used 3-5 days before transplanting. [0003] Oxadiargyl, CAS No.: 39807–15–3; Chemical name: 5-tert-butyl-3-(2,4-dichloro-5-(prop-2-ynyloxy) Phenyl)-1,3,4-oxadiazol-2(3H)-one), is a new type of oxadiazole nitrogen-contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N37/22A01N43/824A01N47/36A01P13/00
CPCA01N25/04A01N37/22A01N43/82A01N47/36A01N2300/00
Inventor 范伟赠陈丰喜
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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