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Seed coating, and preparation method and application thereof

A tin catalyst and silicon surfactant technology, applied in the field of pesticides, can solve the problems of unstable release of pesticide active ingredients, increased environmental pressure, and poor biodegradability, achieving strong biodegradability, controllable release speed, and reduced impact Effect

Inactive Publication Date: 2017-02-15
JIANGXI TIANREN ECOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patents require the use of aromatic hydrocarbon solvents in the preparation process of microcapsule suspensions, which increases the environmental pressure; and polyurethane is used as the wall material, which has poor biodegradability, and it is easy to cause unstable or non-release of pesticide active ingredients.

Method used

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  • Seed coating, and preparation method and application thereof
  • Seed coating, and preparation method and application thereof

Examples

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preparation example Construction

[0036] The present invention also provides the preparation method of the seed coating agent described in the above technical scheme, comprising the following steps:

[0037] 1) Mixing the liquefied cellulosic polysaccharide, the polyether polyol and 40-60 wt% of the pesticide active ingredient uniformly to obtain the preparatory liquid A;

[0038] 2) Mix the preparatory solution A, triethylenediamine, silicon surfactant and tin catalyst obtained in step 1) evenly to obtain preparatory solution B;

[0039] 3) uniformly mixing the diisocyanate compound with the remaining pesticide active ingredients to obtain a preparatory solution C;

[0040] 4) Mix the preparatory solution B and the preparatory solution C evenly to obtain the seed coating agent.

[0041] In the present invention, the preparatory liquid A is obtained by uniformly mixing polyols and some active ingredients of pesticides. In the present invention, the polyols are preferably liquefied plant fiber polysaccharides...

Embodiment 1

[0048] Mix 1g of liquefied plant fiber polysaccharide with 9g of polyether polyol N-330 to obtain preparatory solution A;

[0049] Mix 10 g of preparatory solution A with 25 g of toluene diisocyanate (TDI), and stir at 50 rpm for 20 min to obtain a seed coating agent.

Embodiment 2

[0051] Mix 1g of liquefied plant fiber polysaccharide and 9g of polyether polyol N-330 evenly to obtain preparatory solution A;

[0052] Mix 10 g of preparatory solution A with 20 g of toluene diisocyanate (TDI), and stir at 100 rpm for 20 min to obtain a seed coating agent.

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Abstract

The invention provides a seed coating, which is prepared from the following raw materials in parts by weight: 5 to 20 parts of polyhydric alcohol substances, 0 to 20 parts of pesticide active ingredients, 0 to 0.5 part of tri ethylene diamine, 0 to 0.5 part of silicon surfactants, 0 to 0.25 part of tin catalysts and 5 to 20 parts of diisocyanate compounds, wherein the polyhydric alcohol substances are liquefied plant fiber polysaccharides and polyether polyol. The seed coating has the advantages that the liquefied fiber polysaccharides are added; the seed coating using the liquefied fiber polysaccharides as the raw materials has high biodegradable performance, so that the operation is fast, simple and convenient; the release speed is controllable, and the like.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a seed coating agent and its preparation method and application. Background technique [0002] The seeds in the dry or wet state are wrapped with a pesticide composition containing a binder to form a protective layer with certain functions and coating strength outside the seeds. This process is called seed coating. Combination substances are called seed coatings. [0003] The use of seed coating agents to coat seeds can promote the standardization, pelletization, and commercialization of improved varieties. After coating with seed coating agents, the quality of seeds can be improved, so that the emergence of seedlings is guaranteed to be complete, complete, and strong, and seeds can be saved at the same time; it can also prevent and control diseases. Insects, rodents and deficiency diseases, the coated seeds are sown into the soil, the seed coating forms a barrier around the ...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N51/00A01N47/02A01N63/04A01N63/00A01P7/04A01P21/00
CPCA01N25/04A01N47/02A01N51/00A01N63/00A01N63/30Y02A50/30
Inventor 曾升华李肖宇吴俊杰石峥梁小文罗双燕罗建辉石仕福王根豪严艺波李英武
Owner JIANGXI TIANREN ECOLOGY
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