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Nimbin micro capsule suspension formulation

A technology of suspension and azadirachtin, which is applied in botany equipment and methods, animal repellants, biocides, etc., can solve the problems of short duration and easy failure, and achieve long duration and good stability , Good insect repellent effect

Inactive Publication Date: 2005-12-21
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These dosage forms all have the disadvantages that the active ingredients are prone to failure under the action of the external environment, and the duration of the effect is short.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] The weight percentage of the suspension formulation is: azadirachtin 1%, capsule wall material 8%, capsule core solvent 20%, filler 25%, emulsifier 0.3%, pH regulator 0.5%, viscosity regulator 2.4%, suspending agent : 5.5%, antifreeze: 0.5%, the rest is water; among which: the content of the original drug of azadirachtin is 80%, the material of the capsule wall is urea-formaldehyde resin, the solvent of the capsule is chloroform, the filler is petroleum ether, and the emulsifier is It is sodium lauryl sulfate, pH adjuster is triethanolamine, sodium hydroxide, hydrochloric acid, dispersant is sodium carboxymethylcellulose and Tween-20, suspending agent is NaCl, and antifreeze is glycerin.

[0011] Using the above-mentioned suspension formulation of azadirachtin microcapsules, the pesticide azadirachtin microcapsules can be prepared by the in-situ polymerization method known to those skilled in the art. Dissolve in 25ml of chloroform, then mix with 30ml of petroleum ether...

example 2

[0013] The weight percentage of the suspension formula is: azadirachtin 0.5%, capsule wall material 40%, capsule core solvent 15%, filler 0%, emulsifier 0.1%, pH regulator 1%, viscosity regulator 0.5%, suspending agent 4%, antifreeze 0.2%, and the rest is water; of which: the content of azadirachtin is 40%, the capsule wall material is melamine formaldehyde resin; the capsule core solvent is toluene; the emulsifier is polyvinyl alcohol; the pH regulator is hydrogen Sodium oxide and hydrochloric acid; viscosity modifier is sodium carboxymethyl cellulose; suspending agent is NaCl; antifreeze is sorbitol.

[0014] Using the above-mentioned suspension formulation of azadirachtin microcapsules, the pesticide azadirachtin microcapsules can be prepared by the in-situ polymerization method known to those skilled in the art. Dissolve in 25ml of toluene, then add the prepolymer aqueous solution prepared by 25g of melamine and 50ml of formaldehyde into the reactor, add 0.5g of polyvinyl ...

example 3

[0016] The weight percentage of the suspension formulation is: azadirachtin 0.03%, capsule wall material 10%, capsule core solvent 15%, filler 18%, emulsifier 0.5%, pH regulator 0.8%, viscosity regulator 5%, suspending agent 12%, antifreeze 0.1%, and the rest is water; of which: the content of azadirachtin is 10%, the capsule wall material is urea-formaldehyde resin, the capsule core solvent is chloroform, the filler is petroleum ether, and the emulsifier is ten Sodium dialkyl sulfate, pH regulator is triethanolamine, sodium hydroxide, hydrochloric acid, suspending agent is NaCl, viscosity regulator is Tween-20, and antifreeze is urea.

[0017] Using the above suspension formulation of azadirachtin microcapsules, the pesticide azadirachtin microcapsules can be prepared by an in-situ polymerization method known to those skilled in the art. Compared with Example 1, the pesticide was replaced with 0.5 g of the original drug of azadirachtin with a content of 10%, 100 ml of sodium ...

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PUM

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Abstract

The present invention relates to a suspension formula of nimbin microcapsule. Said formula includes (by wt%) 0.03%-1% of nimbin, 8%-40% of capsule wall material, 15%-20% of capsule core solvent, 0%-25% of filling agent, 0.1%-0.5% of emulsifying agent, 0.5%-1% of pH regulator, 0.5%-5% of viscosity regulator, 4%-12% of suspension agent, 0.1%-0.5% of antifreezing agent and rest is water, in which the capsule wall material is beetle or terpolycyantoamino-formaldehyde resin, the capsule core solvent is trichloromethane or toluene, the filling agent is petroleum ether, emulsifying agent is sodium lauryl sulfate or polyvinyl alcohol, the suspension agent is NaCl, the viscosity regulator is sodium cellulose glycollate, Tween-20 and acacia gum.

Description

Technical field: [0001] The invention relates to a suspension formulation of azadirachtin microcapsules, belonging to the technical field of pesticide preparations. Background technique: [0002] Traditional pesticide formulations can no longer meet the needs of modern agricultural development, so the research and development of pesticides mainly focus on the research and development of new pesticide formulations. Pesticide microcapsules are a new formulation with higher technical content and more development prospects in the current new formulations of pesticides, which can protect the core drug from environmental influences, improve its stability, control the slow release of drugs, and be harmful to humans and animals. It is less harmful and has strong compounding ability with pesticides. [0003] Azadirachtin is a world-recognized bio-pesticide and is valued by countries all over the world, but the developed formulations are mainly concentrated in emulsifiable concentrat...

Claims

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Application Information

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IPC IPC(8): A01N43/90
Inventor 袁青梅郑保忠王兴杨红卫
Owner YUNNAN UNIV
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