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Sustained control release preparation of nano porous active carbon-carrying agricultural antibiotic and preparation method thereof

An agricultural antibiotic and nanoporous technology, applied in botany equipment and methods, chemicals for biological control, biocides, etc., can solve problems such as unsatisfactory control effect, poor stability of agricultural antibiotics, harsh storage conditions, etc., to achieve Improve solubility, increase utilization, and reduce pollution

Active Publication Date: 2011-10-12
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problems of poor stability of agricultural antibiotics in the prior art, harsh storage conditions, and unsatisfactory control effects, the present invention provides a slow and controlled release preparation and preparation method of agricultural antibiotics loaded on nanoporous activated carbon, which can effectively Avoid the degradation of light and microorganisms, greatly improve the utilization rate of agricultural antibiotics

Method used

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  • Sustained control release preparation of nano porous active carbon-carrying agricultural antibiotic and preparation method thereof
  • Sustained control release preparation of nano porous active carbon-carrying agricultural antibiotic and preparation method thereof
  • Sustained control release preparation of nano porous active carbon-carrying agricultural antibiotic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This example is to prepare a preparation containing 50% abamectin loaded on nanoporous activated carbon

[0046] Add 1.0kg of Abamectin original drug into the mixing tank, add 100L of acetone, fully dissolve, add 0.8kg of porous activated carbon [pore size between 100nm-500nm], fully absorb for 24 hours, then transfer to a rotary evaporator. Evaporate acetone at 50°C and 0.02MPa to recrystallize the abamectin solution. After the recrystallization is finished, the abamectin-activated carbon sustained and controlled release granules are obtained. Then add 0.01kg microcrystalline cellulose, 0.01kg sodium alginate, 0.02kg sodium dodecylbenzenesulfonate, 0.01kg sodium polyphosphate, 0.01kg dimethyl sulfoxide, 0.01kg dioctyl sulfosuccinate Sodium salt, 0.13kg urea, after mixing evenly, place in the ball mill and grind for 3h, take out the mixture, you can get nanoporous activated carbon loaded powder containing 50% abamectin. Take out the powder, place it in a tablet press ...

Embodiment 2

[0057] This experiment is to prepare a preparation containing 60% pyrethrins loaded on porous activated carbon

[0058] Add 1.2kg of pyrethrin technical material into the mixing tank, add 100L of acetone, fully dissolve, add 0.6kg of nanoporous activated carbon [pore size between 100nm and 500nm], fully absorb for 24 hours, then transfer to a rotary evaporator. Evaporate acetone at 50°C and 0.02MPa to recrystallize the avermectin solution. After the recrystallization is finished, the pyrethrin-activated carbon sustained and controlled release granules are obtained. Then add 0.01kg microcrystalline cellulose, 0.01kg sodium alginate, 0.02kg sodium dodecylbenzenesulfonate, 0.01kg sodium polyphosphate, 0.01kg dimethyl sulfoxide, 0.01kg dioctylsulfosuccinate Ester sodium salt, 0.13kg urea, mixed evenly, placed in a ball mill and ground for 3 hours, and the mixture was taken out to obtain a nanoporous activated carbon-loaded powder containing 60% pyrethrins. Take out the powder, p...

Embodiment 3

[0060] This example is to prepare a preparation containing 80% Jinggangmycin loaded on porous nanoporous activated carbon

[0061] Dissolve 1.6kg of Jinggangmycin in 5L of water, add 0.3kg of nanoporous activated carbon [pore size between 100nm and 500nm] after fully dissolved, fully absorb for 24 hours, then transfer to a rotary evaporator. Evaporate acetone at 50°C and 0.02MPa to recrystallize the avermectin solution. After recrystallization, Jinggangmycin-activated carbon slow-release granules are obtained. Then add 0.005kg starch, 0.005kg sodium alginate, 0.005kg sodium dodecylbenzenesulfonate, 0.005kg sodium polyphosphate, 0.005kg dimethyl sulfoxide, 0.005kg dioctyl sulfosuccinate sodium salt , 0.07kg of urea, after mixing evenly, place in a ball mill and grind for 3h, take out the mixture, and get nanoporous activated carbon loaded powder containing 80% Jinggangmycin. Take out the powder, place it in a tablet press or granulator, and press it into a sheet or granule ac...

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Abstract

The invention discloses a sustained control release preparation of a nano porous active carbon-carrying agricultural antibiotic and a preparation method thereof. The sustained control release preparation consists of the following components in percentage by weight: 15 to 40 percent of nano porous carbon, 50 to 80 percent of agricultural antibiotic, 0.25 to 1.0 percent of emulsifying agent, 0.5 to1.0 percent of thickening agent, 0.25 to 1.0 percent of dispersing agent, 0.25 to 1.0 percent of quickly penetrating agent and the balance of filler. The preparation method comprises the following steps of: after the agricultural antibiotic is dissolved, absorbing the agricultural antibiotic by using the nano porous active carbon; recrystallizing; adding the components according to the ratio; mixing completely and uniformly; and grinding and crushing the mixture to obtain the sustained control release preparation. The sustained control release preparation can effectively avoid illumination and degradation of microorganisms and can greatly increase the utilization ratio of the agricultural antibiotic.

Description

technical field [0001] The invention relates to the field of pesticide preparation processing, and more particularly relates to a nanoporous activated carbon-loaded slow-controlled release preparation of agricultural antibiotics and a preparation method. Background technique [0002] my country is a large agricultural country. Pesticides are a necessity in agricultural production and are widely used in the prevention and control of crop diseases. They are of great significance for increasing crop yields, maintaining social stability, and promoting economic development. Although chemical pesticides are very lethal to pests, they also kill natural enemies at the same time, destroying the ecological balance, causing rampant regeneration of pests, and making secondary pests become major pests. In addition, due to the long-term and large-scale use of chemical pesticides, the resistance of pests has increased significantly, and the amount of pesticide residues in agricultural prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N25/12A01N25/34A01N25/04A01N63/02A01N53/04A01N43/90A01N43/22A01N43/16A01P3/00
CPCA01N25/04A01N25/12A01N25/34A01N43/90A01N53/00
Inventor 崔海信姜建芳孙长娇
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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