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Dispersible oil suspension agent for low-melting-point compound and preparation method thereof

A compound and low melting point technology, applied in botany equipment and methods, biocides, animal repellents, etc., can solve the problems of difficult product particle size distribution, low production efficiency, solid precipitation, etc., and achieve physical stability Good, saving production cost, stable physical and chemical properties

Inactive Publication Date: 2014-09-03
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of farmers, if they are not completely shaken, it is easy to cause phytotoxicity
Secondly, many dispersible oil suspension concentrates on the market are easy to precipitate solids or freeze completely at low temperatures, which brings great troubles to winter production or use in cold northern regions
Third, the active ingredients selected for the current dispersible oil suspension concentrates are usually compounds with higher melting points, which imposes great restrictions on the large number of low-melting point compounds today.
Fourth, the current production of dispersible oil suspensions needs to be ground by a sand mill. Due to the increase in the temperature of the sand mill and the paste, it is difficult to obtain a stable preparation system. Moreover, the price of the sand mill is high, the energy consumption is high, and the production efficiency is low. This has brought great limitations to mass production
Fifth, because the current production method needs to be ground by a sand mill, the particle size distribution of the obtained product is difficult to guarantee. Usually the particle size distribution is wide, and stratification is easy to occur after long-term storage
Sixth, most of the solvents currently used are methyl oleate with a long carbon chain, solids will precipitate or freeze at low temperatures, and the fluidity is poor

Method used

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  • Dispersible oil suspension agent for low-melting-point compound and preparation method thereof
  • Dispersible oil suspension agent for low-melting-point compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: prepare 5% clodinafop-propargyl dispersible oil suspension concentrate

[0019] The mass percent of each component is as follows:

[0020] Clodinafop-propargyl technical (calculated by 100 percent) 5%

[0021] Castor oil polyoxyethylene ether (BY-140) 4%

[0022] Calcium dodecylbenzenesulfonate (Nongru 500#) 6%

[0023] Sodium lignosulfonate (Reax 82p) 1.5%

[0024] High molecular carboxylic acid polymer TERSPERSE 2700 1.5%

[0025] Fumed silica 1%

[0026] Organic bentonite 2%

[0027] Methyl caprylate 20%

[0028] Methylated soybean oil balance

[0029] Preparation:

[0030] Mix clodinafop-propargyl with methyl caprylate and methylated soybean oil, heat it up to 70°C by electric heating, stir while heating, and add emulsifier BY-140 and agricultural Milk 500#, stir evenly. Then add TERSPERSE 2700, Reax 82p, fumed silica, and organic bentonite to it, and stir again to obtain 5% clodinafop-propargyl dispersible oil suspension concentrate.

Embodiment 2

[0031] Embodiment 2: prepare 15% cyhalofop-methyl dispersible oil suspension concentrate

[0032] Cyhalofop-ethyl technical (calculated by 100% discount) 15%

[0033] Castor oil polyoxyethylene ether (BY-140) 7%

[0034] Calcium dodecylbenzenesulfonate (Nongru 500#) 8%

[0035] Sodium lignosulfonate (Reax 82p) 1.5%

[0036] High molecular carboxylic acid polymer (Tersperse 2500) 3.5%

[0037] Organic bentonite 3%

[0038] Methyl caprylate 18%

[0039] Methylated corn oil balance

[0040] Preparation:

[0041] Mix cyhalofop-ethyl with methyl caprylate and methylated corn oil, heat it up to 50°C by electric heating, stir while heating, and add BY-140 and agricultural milk after it is completely melted 500#, stir evenly. Then add Reax 82p, Tersperse 2500 and organic bentonite to it and stir evenly again to obtain 15% cyhalofop-ethyl dispersible oil suspension concentrate.

Embodiment 3

[0042] Embodiment 3: Preparation of 25% fluroxazone dispersible oil suspension concentrate

[0043] Fluoxetalone technical (calculated by 100% discount) 25%

[0044] EO-PO block copolymer (Pluronic F108) 10%

[0045] Fatty alcohol ethoxylate (Emulan AF) 10%

[0046] Naphthalenesulfonate Dispersant (NNO) 3%

[0047] High molecular carboxylic acid polymer TERSPERSE 2700 1%

[0048] Fumed silica 1%

[0049] Magnesium Aluminum Silicate 1.5%

[0050] Methyl caprylate 15%

[0051] Methylated soybean oil balance

[0052]Mix fentrazone with methyl caprylate and methyl soybean oil, heat it up to 50°C by electric heating, stir while heating, and add Pluronic F108 and Emulan AF after it is completely melted, and stir evenly . Then add TERSPERSE 2700, magnesium aluminum silicate, and fumed silica to it and stir evenly again to obtain 25% fluroxazone dispersible oil suspension concentrate.

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Abstract

The invention discloses a dispersible oil suspension agent for a low-melting-point compound and a preparation method thereof. The dispersible oil suspension agent is characterized by being composed of following substances in percentage by mass: 5%-25% of the low-melting-point compound, 10%-20% of an emulsifying agent, 2%-5% of a dispersant, 2%-5% of a thixotropic agent and residual amount of a solvent, wherein the low-melting-point compound is a compound with the smelting point of 25-70 DEG C. The product disclosed by the invention has good stability; a layering and precipitation phenomenon does not occur; solids are not separated out or the product is not frozen at a low temperature and the mobility is good; meanwhile, the energy consumption is low, the production efficiency is high and the physicochemical properties of the product are stable, so that the dispersible oil suspension agent is possibly prepared from a lot of the low-melting-point compounds.

Description

technical field [0001] The invention relates to a low melting point compound dispersible oil suspension and a preparation method thereof. Background technique [0002] Dispersible oil suspension concentrate is a new type of pesticide formulation. Its outstanding feature is that the formulation is environmentally friendly. During use, it will not generate a lot of dust like wettable powder, and will not waste a lot of organic solvents like the production of emulsifiable concentrate. , it can also make those original drugs that are easy to decompose in water have a stable environment system. When the dispersible oil suspension concentrate is mixed with water and sprayed, it will increase the adhesion of the liquid medicine to the target, and has the effect of moisturizing, thus greatly increasing the effect of pest control. [0003] Due to the short development time of dispersible oil suspending agent in our country, there are still many difficult problems in the production p...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/30A01N43/40A01N39/04A01N43/20A01N43/36A01N43/60A01P13/00
Inventor 陈涛陈丰喜范伟赠
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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