Azacycle containing pesticide microemulsion and its prepn

A production method and technology of nitrogen heterocycles, applied in the field of new preparations and their new production, and new water-based formulations, can solve the demand and dosage calculation that are difficult to adapt to the sharp increase in nitrogen-containing heterocycle pesticides. The scope of application is lacking in science System, narrow transparent temperature range and other issues, to achieve excellent physical and chemical stability, conducive to popularization, and wide transparent temperature range

Inactive Publication Date: 2007-08-22
周本新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. Complex processes such as strong stirring, heating phase inversion and filtration are required in the production;
[0008] 3. It is mostly suitable for stable liquid technical materials in water, but it is powerless for most solid technical materials containing nitrogen-containing heterocycles, and it is difficult to meet the demand for rapidly increasing varieties of nitrogen-containing heterocycle pesticides;
[0010] 5. The product has a narrow transparent temperature range and is easily affected by many factors, often leading to irreversible phase separation
However, the types of raw materials used in the preparation method, the calculation of dosage, the scope of application, etc. lack scientific and systematic expressions, and need to be further deepened and expanded.

Method used

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  • Azacycle containing pesticide microemulsion and its prepn
  • Azacycle containing pesticide microemulsion and its prepn
  • Azacycle containing pesticide microemulsion and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、50

[0043] Embodiment 1, 50% propiconazole microemulsion preparation method

[0044] In a 2,000 liter reactor, put 100KG of tap water, 32KG of propionic acid, and 37KG of hydrochloric acid. After mixing, slowly add 521KG of 96% propiconazole, continue stirring until transparent, and add Nongru-1601# (or 1602#, Ningru-33#, Ningru-34#) phosphoric acid ester 130KG, AEO-7 20KG, add 160KG of tap water, and mix well to get the product.

[0045] Table 1 different content propiconazole microemulsion main raw material input ratio (%)

Embodiment 225

[0046] Embodiment 2.25% myclobutanazole microemulsion preparation method

[0047] In a 2000-liter reactor, put 215.5KG of tap water, 19.5KG of propionic acid, and 22KG of hydrochloric acid. After mixing, slowly add 261KG of 96% myclobutanil, continue stirring until transparent, add 600# (601#-~606 # and the same series) Phosphate ester 100KG, NP-10 20KG, and then add 362KG of tap water, mix well to get the product.

[0048] Table 2 The main raw material input ratio (%) of different content myclobutanil microemulsions

Embodiment 3

[0049] Embodiment 3.20% (and 40%) difenoconazole microemulsion preparation method

[0050] In a 2000-liter reactor, put 200KG of tap water, 19KG (34KG) of lactic acid, 30KG (49KG) of hydrochloric acid, and slowly add 210KG (421KG) of 95% difenoconazole and 1KG of salicylic acid after mixing, continue Stir until transparent, add TW-80 100KG (120KG), MAP-10 20KG, and then add 420KG (155KG) of tap water, mix well to get the product.

[0051] 2. Preparation method of nicotinoid pesticide microemulsion: suitable for imidacloprid, acetamiprid, thiamethoxam and other nicotinoid (pyridine, pyrimidine) pesticides.

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Abstract

The azacycle containing pesticide microemulsion and its preparation process relates to many sorts of new water emulsion pesticide preparations. The present invention features that some azacycle containing pesticides may be dissolved temporarily in the mixed solution system of inorganic acid with or without organic acid and the solution may be maintained by using surfactant with or without antifreezing thickener, so as to prepare azacycle containing pesticide microemulsion of 2-60 % concentration and containing no harmful solvent. The present invention opens one new way for preparing water emulsion pesticide preparations.

Description

1. Technical field [0001] The invention relates to a nitrogen-containing heterocyclic pesticide microemulsion and a preparation method thereof, and relates to a new water-based formulation, a new preparation and a new preparation method of a large class of pesticides. 2. Background technology [0002] In order to use pesticides safely, economically and effectively, almost all pesticide raw materials need to be made into a variety of processed dosage forms and preparations that are convenient for application and can fully exert their efficacy. Among the more than 80 kinds of pesticide dosage forms in the world, EC still accounts for 26%. Because the emulsifiable oil is dispersed in water, the emulsion droplets are fine, the drug effect is good, and the preparation is simple, and it is suitable for the processing of most liquid and low-melting point pesticides such as organophosphorus and pyrethroids. Therefore, the proportion of emulsifiable oil among nearly 70 dosage forms i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/30A01N43/00
Inventor 周本新
Owner 周本新
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