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The preparation method of 10% gram Budweiser granules slow-release pesticide

A technology of carbosulfur granules and slow-release pesticides, applied in the field of pesticides, can solve the problems of easy loss of carbosulfur, pollution, short medicine period, etc.

Active Publication Date: 2016-08-24
HUNAN GOFAR FINE CHEM IND TECH CO LDT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a 10% carbofuran granule that is not easy to lose, has a long drug period and is less harmful to the environment in view of the problems of easy loss, short drug period and serious pollution of carbofuran prepared by traditional preparation methods Preparation method of slow-release pesticide

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  • The preparation method of 10% gram Budweiser granules slow-release pesticide

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preparation example Construction

[0019] A kind of preparation method of 10% carbofuran granule sustained release pesticide, comprises the following steps:

[0020] S110. At 50°C~60°C, mix soft water and film-forming agent for 40 minutes, add dispersant, coloring agent, defoamer, white oil and kaolin in sequence, and stir for 15 minutes, then add carbofuran and Cross-linking agent, stirred for 15 minutes to obtain a mixed solution.

[0021] Wherein, the film-forming agent is a mixture of hydroxymethyl starch and sodium lignosulfonate. Hydroxymethyl starch was purchased from Lanzhou Dali Chemical Technology Co., Ltd., and sodium lignosulfonate was purchased from Hangzhou Zhongguang Chemical Industry Co., Ltd.

[0022] The dispersant is sodium naphthalenesulfonate (D425), which was purchased from Shanghai Wanan Chemical Technology Research Institute.

[0023] The dyeing agent is basic brilliant violet, also known as methyl violet, which was purchased from Kunshan Changxuan Chemical Co., Ltd., Jiangsu Province....

Embodiment 1

[0044] At 50°C, mix 17kg of soft water, 1.5kg of hydroxymethyl starch and 1.5kg of sodium lignosulfonate for 40 minutes, then add 0.075kg of sodium naphthalenesulfonate, 0.1kg of basic brilliant purple, 0.005kg of silicone oil, white oil 0.75kg and 1.5kg of kaolin, stirred at a rate of 2000 rpm for 15 minutes, then added 5 kg of carbofuran original drug, 1.5 kg of polyvinyl alcohol and 4.5 kg of white sugar, and stirred at a rate of 2000 rpm for 15 minutes. to obtain a mixture. The above mixed solution was wet ground to obtain a slurry. drying the river sand to obtain dry river sand. The above-mentioned dried river sand and slurry are mixed, granulated and dried to obtain 10% carbofuran granule sustained-release pesticide.

Embodiment 2

[0046] At 60°C, mix 17kg of soft water, 1.5kg of hydroxymethyl starch and 1.5kg of sodium lignosulfonate for 40 minutes, then add 0.075kg of sodium naphthalenesulfonate, 0.1kg of basic brilliant purple, 0.005kg of silicone oil, white oil 0.75kg and 1.5kg of kaolin, stirred for 15 minutes at a rate of 3000 rpm, then added 5 kg of carbofuran, 1.5 kg of polyvinyl alcohol and 4.5 kg of white sugar in turn, and stirred for 15 minutes at a rate of 3000 rpm. to obtain a mixture. The above mixed solution was wet ground to obtain a slurry. drying the river sand to obtain dry river sand. The above-mentioned dried river sand and slurry are mixed, granulated and dried to obtain 10% carbofuran granule sustained-release pesticide.

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Abstract

The invention provides a preparation method of 10% granular carbofuran controlled-release pesticide. The preparation method comprises the following steps: mixing soft water and a film-forming agent for 40min at 50-60 DEG C, sequentially adding with a dispersing agent, a coloring agent, a defoaming agent, white oil and kaolin, stirring for 15min, then sequentially adding with carbofuran technical and a cross-linking agent, and stirring for 15min to obtain mixed solution; carrying out wet grinding to the mixed solution to obtain paste, dewatering river sands to obtain dried river sands, mixing the dried river sands and the paste, granulating, and drying to obtain the 10% granular carbofuran controlled-release pesticide. According to the 10% granular carbofuran controlled-release pesticide prepared by the method, carbofuran has controllable release rate, cannot run off easily, and has long action time and low environment harm.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a preparation method of 10% carbofuran granule slow-release pesticides. Background technique [0002] According to the release characteristics of active ingredients, the pesticide formulations are divided into two types: free-release conventional type and controlled-release type. Because the effective rate of free-release conventional pesticides is 30% to 50%, and the loss rate reaches 50% to 70%, the waste is serious and the environment is polluted, so the controllable release rate of pesticides has become an important research direction of pesticide formulations. The core of controlled release technology lies in the interaction between polymer materials and pesticide ingredients. This force can make the active ingredients of pesticides release at a certain rate according to the characteristics of diseases and insect pests or the needs of crops, and prolong the drug effect period under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/28A01N47/18A01P7/04A01P5/00
Inventor 祝红福张敦河陈珍陈南方
Owner HUNAN GOFAR FINE CHEM IND TECH CO LDT