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Low-melting-point compound suspension and preparation method thereof

A compound, low melting point technology, applied in the field of pesticides, can solve the problems of high energy consumption, short development history, flocculation, etc., and achieve the effects of simple equipment selection, simple processing technology, and wide application area.

Active Publication Date: 2016-03-30
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the short development history, there are still many problems in the actual production of products, including formulations and processes. Especially for many low-melting point active pharmaceuticals to be made into water suspensions, many new challenges are faced in the screening of additives and production processes. , For example: 1. High energy consumption, poor stability over time, serious problems such as water separation, solidification, and flocculation of the product; 2. Due to the inherent characteristics of low melting point itself, creaming during the sanding process has a serious impact on the normal production of the product ;3. During heat storage, the product will stratify, flocculate, solidify, crystallize, and the suspension rate will decrease; 4. The field activity of the product is poor

Method used

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  • Low-melting-point compound suspension and preparation method thereof
  • Low-melting-point compound suspension and preparation method thereof
  • Low-melting-point compound suspension and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Preparation of pyraclostrobin suspension concentrate

[0022] The content of each component is as follows:

[0023]

[0024]

[0025] Preparation method: first prepare special additives, weigh 8 parts of isooctyl alcohol polyoxyethylene ether, 9 parts of calcium dodecylbenzenesulfonate, 8 parts of diisooctyl sodium sulfosuccinate, 10 parts of secondary octanol and 3 parts of liquid paraffin, placed in a homogenizer, stirred and mixed until uniform, to obtain.

[0026] Add proportionally weighed EthylanNS-500LQ, Dispersogen1494liq, polycarboxylate sodium salt, special additives, ethylene glycol, sodium benzoate, Sag*1522 and water into the stirring tank, stir evenly to obtain the mixed solution A, and then add the mixed solution Add the pyraclostrobin technical substance to A, and stir continuously during the addition process, so that the pyraclostrobin technical substance is completely soaked into the mixture A, and then stir for 30 minutes. Put th...

Embodiment 2

[0027] Embodiment 2: preparation myclobutanil suspension concentrate

[0028] The content of each component is as follows:

[0029]

[0030]

[0031] Preparation method: first prepare special additives, weigh 13 parts of isooctyl alcohol polyoxyethylene ether, 15 parts of calcium dodecylbenzenesulfonate, 14 parts of diisooctyl sodium sulfosuccinate, 12 parts of sec-octanol and 4 parts of liquid paraffin, placed in a homomixer and stirred until uniform, to obtain.

[0032] Add Emulsogen3510, Dispersogen1494liq, EmulsonAGTRN14105, special additives, ethylene glycol, Cathone, magnesium aluminum silicate, Sag*1572 and water weighed in proportion to the stirring tank, stir evenly to obtain mixed solution A, and then add mixed solution A Add the original drug of myclobutanil to the mixture, and stir continuously during the adding process, so that the original drug of myclobutanil is completely soaked into the mixed solution A, and then stir for another 30 minutes. Put the mi...

Embodiment 3

[0033] Embodiment 3: preparation pendimethalin suspension

[0034] The content of each component is as follows:

[0035]

[0036] Preparation method: first prepare special additives, weigh 20 parts of isooctyl alcohol polyoxyethylene ether, 16 parts of calcium dodecylbenzenesulfonate, 18 parts of diisooctyl sodium sulfosuccinate, 15 parts of sec-octanol and 4 parts of liquid paraffin, placed in a homomixer and stirred until uniform, to obtain.

[0037] Add Emulsogen3510, Dispersogen1494liq, EmulsonAGTRN14105, special additives, ethylene glycol, sodium benzoate, FTRTAF1500 and water weighed in proportion to the stirring tank, stir evenly to obtain a mixed solution A, and then add pendimethalin to the mixed solution A During the addition process, stir constantly, so that the pendimethalin original drug is completely soaked into the mixed solution A, and then stir for another 30 minutes. Put the mixed solution obtained above into a horizontal sand mill for sand grinding in s...

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Abstract

The invention discloses a low-melting-point compound suspension. The low-melting-point compound suspension comprises the following components in parts by weight: 5 to 55 parts of a low-melting-point compound, 1 to 7 parts of a moisturizing agent, 2 to 5 parts of a dispersant, 0.5 to 3 parts of a stabilizing agent, 2 to 6 parts of an anti-freezing agent, 0.1 to 0.5 part of a preservation, 1 to 8 parts of a thickening agent, 0.1 to 0.5 part of an anti-foaming agent, 1 to 15 parts of a special auxiliary agent, and the balance of water; the low-melting-point compound is a compound with the melting point between 35 and 70 DEG C; the auxiliary agent comprises the following components in parts by weight: 8 to 40 parts of isooctyl alcohol polyoxyethylene ether, 8 to 30 parts of calcium dodecyl benzene sulfonate, 6 to 20 parts of dioctyl sodium sulfosuccinate, 6 to 18 parts of octanol, and 3 to 5 parts of liquid paraffin. The invention also discloses a preparation method for the suspension. The preparation method comprises the following steps: mixing uniformly, grinding, adding the thickening agent and stirring uniformly. The low-melting-point compound suspension is high in fluidity, obvious in medicinal effect, easy to prepare, and low in production cost.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to a low melting point compound suspending agent and a preparation method thereof. Background technique [0002] Pesticide water suspension concentrate is a new dosage form with a short history of development in pesticide preparations and is being developed and perfected. Many herbicides, fungicides and insecticides can be processed into this dosage form. Because of its wettable powder advantages, it was once called an epoch-making new dosage form. It has developed extremely rapidly at home and abroad, and has partially replaced wettable powder. It is a promising new dosage form. [0003] As a representative of water-based pesticide formulations, pesticide aqueous suspension concentrates reduce the amount of organic solvents, are safe and convenient to use, store and transport, and have good environmental compatibility. Pesticide suspension concentrate is the dispersion of water-insolubl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/22A01N47/24A01N43/653A01N33/18A01N31/14A01N53/06A01N53/08
CPCA01N25/04A01N25/22A01N31/14A01N33/18A01N43/653A01N47/24A01N53/00
Inventor 孟庆宝陈丰喜范伟赠
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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