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Coating material, coated controlled-release pesticide fertilizer, preparation method and application thereof

A coating material, fertilizer technology, applied in the application, layered/coated fertilizer, nitrogen fertilizer and other directions, can solve the problems of solvent volatilization, pollution of the environment, etc., achieve complete coating, good controlled release performance, and increase added value Effect

Inactive Publication Date: 2019-09-03
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating material provided by the present invention uses plant polyols and specific types of polyisocyanate as the main coating skeleton material, and at the same time optimizes the types and amounts of various components such as film-forming auxiliary agents, and the obtained coating material can be used at a lower Under the temperature (50-60 ℃), in-situ polymerization reaction can be used to form a film, which can not only ensure the manufacture of coated slow and controlled release pesticides without causing the decomposition of pesticides, but also avoid the use of solvent-based coating materials and processes to manufacture slow and controlled pesticides. release pesticides, and solve the problem of solvent volatilization and environmental pollution caused by solvent-based coating materials and processes

Method used

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  • Coating material, coated controlled-release pesticide fertilizer, preparation method and application thereof
  • Coating material, coated controlled-release pesticide fertilizer, preparation method and application thereof
  • Coating material, coated controlled-release pesticide fertilizer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] This example provides an insecticidal single-coated controlled-release medicinal fertilizer, the composition and preparation method of which are as follows.

[0074] Composition of medicinal fertilizer: insecticide: 3.6 parts (each part is calculated as 1kg, the same below) pure, urea: 20 parts, potassium sulfate: 20 parts, magnesium carbonate: 10 parts, 100 mesh bentonite: 41.4 parts, binder: 1wt% sulfuric acid and 1wt% xanthan gum solution, 5 parts.

[0075] The preparation process is as follows.

[0076] (1) Measure and mix urea, potassium sulfate and magnesium carbonate, and then pulverize them on a fertilizer special pulverizer to make them into powder.

[0077](2) Add the pulverized fertilizer, monosultap and 100-mesh swelling into the disc granulator, mix evenly while adding, and then add the binder to granulate. After granulation, dry at 50-60°C, pass through double-layer sieves, make the particle size between 1-6mm, and the strength of the particles is above ...

Embodiment 2

[0084] This embodiment provides a monosultap-coated controlled-release medicinal fertilizer, its composition and preparation method are as follows: 97 parts of 9-0-10-3.6 monosultap, 1 part of coating material A, and 2 parts of coating material B.

[0085] The composition and preparation method of coating material A are as follows: 10 parts of coating material A are composed of 8 parts of vegetable oil polyol castor oil polyol, 1.6 parts of film-forming auxiliary agent peanut oil, 0.3 part of organometallic compound catalyst stannous octoate, and 0.1 part of porogen Composed of magnesium carbonate. Mix vegetable oil polyols, film-forming aids, and organometallic compound catalysts, heat at 50°C, and react for 25 minutes under stirring to obtain vegetable oil coating materials; mix vegetable oil coating materials and porogens, and heat at 50°C Blending and polymerization were carried out to obtain 10 parts of coating material A.

[0086] Coating material B: Trimethylhexamethyl...

Embodiment 3

[0089] This embodiment provides a monosultap-coated controlled-release medicinal fertilizer, whose composition and preparation method are as follows: 97 parts of 9-0-10-3.6 monosultap, 1.67 parts of coating material A, and 1.33 parts of coating material B.

[0090] The composition and preparation method of coating material A are as follows: 10 parts of coating material A are composed of 6.4 parts of vegetable oil polyol castor oil polyol, 1.6 parts of soybean oil polyol, 1.6 parts of film-forming auxiliary agent peanut oil, 0.3 part of organometallic compound catalyst octanoic acid Composed of stannous, 0.1 part porogen magnesium carbonate. Mix vegetable oil polyols, film-forming aids, and organometallic compound catalysts, heat at 50°C, and react for 25 minutes under stirring to obtain vegetable oil coating materials; mix vegetable oil coating materials and porogens, and heat at 50°C Blending and polymerization were carried out to obtain 10 parts of coating material A.

[00...

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Abstract

The invention provides a coating material, a coated controlled-release pesticide fertilizer, a preparation method and application thereof. The coating material mainly consists of a coating material Aand a coating material B; the coating material A is composed of plant polyol, a film-forming assistant, an organic metal compound catalyst and a pore-forming agent; and the coating material B is polyisocyanate. The components selected by the invention are environmental-friendly materials, and the preparation process of the coated pesticide fertilizer is free of solvent volatilization and possibleenvironmental pollution problems. The coating material can form a film through in-situ polymerization reaction at 50-60DEG C, thus ensuring preparation of the coated controlled-release pesticide fertilizer without pesticide decomposition; in addition, through the combination of fertilizer and pesticide, the added value of the coated controlled-release pesticide fertilizer is increased; the pesticide fertilizer can be dried and coated at low temperature after granulation, thus avoiding the reduction or failure of pesticide efficacy caused by decomposition of the effective components of pesticide; and the coated controlled-release pesticide fertilizer provided by the invention has the characteristics of complete coating and good controlled release performance, and the pesticide release ratemakes the application prospects of the controlled-release pesticide fertilizer wider.

Description

technical field [0001] The invention belongs to the technical field of pesticides and controlled-release fertilizers, and in particular relates to a coating material, coated controlled-release medicinal fertilizers and a preparation method and application thereof. Background technique [0002] Pesticides are an indispensable means of production in modern agriculture. It is reported that the amount of pesticides used in the world is positively correlated with grain production. The application of pesticides is an indispensable and important measure to eliminate pests and diseases and ensure agricultural production in our country. Pests and diseases include above-ground and underground pests. Above-ground pests are easy to control by spraying pesticides, but underground pests are relatively difficult to control. Underground pests are the enemies of crops. They eat seeds, sprouts, and rhizomes, causing lack of seedlings or even destroying seeds, resulting in reduced crop yields....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/02C05G3/60
CPCC05G3/00C05C9/00C05G5/30C05G3/60
Inventor 樊小林刘芳江家泉张立丹黄岩
Owner SOUTH CHINA AGRI UNIV
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