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Mesotrione oil suspension agent composition

A technology of mesotrione and oil suspension, which is applied in biocides, animal repellents, plant growth regulators, etc., and can solve problems affecting normal production and processing, unstable sources of methyl oleate, methyl oleate Solve problems such as unstable ester quality, achieve the effect of ensuring storage stability, good emulsification effect, and good fluidity

Active Publication Date: 2014-01-15
JIANGSU CHANGQING AGROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The methyl oleate currently used in mesotrione oil suspension solvent has an unstable source, and some manufacturers have added some animal fats to it, resulting in unstable quality of methyl oleate. There is a large amount of solids precipitated under the solvent, which leads to a huge increase in the viscosity of the solvent, which affects the normal production and processing. During production and processing in winter, the methyl oleate must be dried in the drying room before feeding, which consumes energy and time.
[0003] At the same time, there are two crystal forms of mesotrione products currently on the market, and they are in the form of large crystals after being stored at 54 degrees for two weeks. Type crystals are in the form of fine crystals. In mesotrione preparations, there is no significant difference in the efficacy of the two crystal forms of the original drug, but there are differences in the stability of the preparations processed with two different crystal forms of the original drug. huge difference
, The original drug in the two crystal forms will eventually transform into the amorphous original drug and decompose when heated, resulting in reduced efficacy or even failure of the product
but The crystallization speed of the original drug in the crystalline form is slow, and the decomposition rate of the heat storage at 54 degrees for two weeks is only 3~4%, while The crystal transformation rate of the original drug of type crystal is usually 20-30% after two weeks of heat storage at 54 degrees, and the high one is even above 50%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Raw materials: 108 kg of mesotrione (95% of the original drug), 150 kg of emulsifier, 10 kg of modified organic bentonite, 5 kg of propyl gallate, 50 kg of deionized water, 2 kg of defoamer, castor 100 kg of sesame oil, 10 kg of barium titanate, and 575 kg of dimethyl carbonate.

[0013] Preparation

[0014] 1) Add half of the castor oil and dimethyl carbonate into the shearing kettle, then add all other raw materials, and shear at high speed for more than 30 minutes to form a uniform mixture;

[0015] 2) Grind the mixture with a sand mill until the particle size D90 of mesotrione is less than 3 μm;

[0016] 3) Then add the remaining castor oil to the ground material, and mix at high speed for about 5 minutes to obtain the finished product.

[0017] The suspension rate detected by GB / T14825 method is 98%.

Embodiment 2

[0019] Raw materials: 108 kg of mesotrione (95% of the original drug), 175 kg of emulsifier, 8 kg of modified organic bentonite, 6 kg of propyl gallate, 40 kg of deionized water, 1 kg of defoamer, castor 120 kg of sesame oil, 10 kg of barium titanate, and 600 kg of dimethyl carbonate.

[0020] Preparation

[0021] 1) Add half of the castor oil and dimethyl carbonate into the shearing kettle, then add all other raw materials, and shear at high speed for more than 30 minutes to form a uniform mixture;

[0022] 2) Grind the mixture with a sand mill until the particle size D90 of mesotrione is less than 3 μm;

[0023] 3) Then add the remaining castor oil to the ground material, and mix at high speed for about 5 minutes to obtain the finished product.

[0024] The suspension rate detected by GB / T14825 method is 97.3%.

Embodiment 3

[0026] Raw materials: 120 kg of mesotrione (95% of the original drug), 150 kg of emulsifier, 10 kg of modified organic bentonite, 3 kg of propyl gallate, 60 kg of deionized water, 2 kg of defoamer, castor 140 kg of sesame oil, 8 kg of barium titanate, and 620 kg of dimethyl carbonate.

[0027] Preparation

[0028] 1) Add half of the castor oil and dimethyl carbonate into the shearing kettle, then add all other raw materials, and shear at high speed for more than 30 minutes to form a uniform mixture;

[0029] 2) Grind the mixture with a sand mill until the particle size D90 of mesotrione is less than 3 μm;

[0030] 3) Then add the remaining castor oil to the ground material, and mix at high speed for about 5 minutes to obtain the finished product.

[0031] The suspension rate detected by GB / T14825 method is 96.9%.

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Abstract

The invention relates to a mesotrione oil suspension agent composition. The composition is characterized in that, the composition comprises, by mass: 8-15% of mesotrione, 10-20% of an emulsifying dispersant, 1-3% of a suspension stabilizer, 1-5% of water, 0.1-0.2% of an organosilicon defoaming agent, and balance of a green and environment-friendly solvent. The green and environment-friendly solvent mainly comprises a mixture of dimethyl carbonate and at least one of jatropha pine nut oil and castor oil. According to the mesotrione oil suspension agent provided by the invention, non-edible plant oil with wide source and the non-toxic green solvent are adopted as suspension carriers, such that the composition is green and environment-friendly, and has a characteristic of high safety to plants. Also, a crystal transition inhibiting agent is added, such that mesotrione original drug crystal transition and decomposition can be effectively inhibited.

Description

technical field [0001] The invention relates to a pesticide preparation, in particular to a mesotrione oil suspension composition. Background technique [0002] The methyl oleate currently used in mesotrione oil suspension solvent has an unstable source, and some manufacturers have added some animal fats to it, resulting in unstable quality of methyl oleate. There is a large amount of solids precipitated under the solvent, which leads to a huge increase in the viscosity of the solvent, which affects the normal production and processing. During production and processing in winter, the methyl oleate must be dried in the drying room before feeding, which consumes energy and time. . [0003] At the same time, there are two crystal forms of mesotrione products currently on the market, and they are in the form of large crystals after being stored at 54 degrees for two weeks. Type crystals are in the form of fine crystals. In mesotrione preparations, there is no significant diff...

Claims

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Application Information

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IPC IPC(8): A01N25/02A01N25/22A01N41/10
Inventor 于国权陈素云马长庆丁华平
Owner JIANGSU CHANGQING AGROCHEMICAL CO LTD
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