Photoresponsive insect virus insecticide and preparation method thereof

An insect virus and light-responsive technology, applied in the direction of insecticides, botanical equipment and methods, biocides, etc., can solve the problems of easy inactivation of virus polyhedrons, insufficient anti-ultraviolet performance, instability in the field, etc., and achieve extended Good storage time, good photoresponse performance, and improved insecticidal efficiency

Inactive Publication Date: 2020-06-19
ZHONGKAI UNIV OF AGRI & ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the anti-ultraviolet performance of existing insect virus insecticides is insufficient, and there are problems such as instability in the field.
Insect viruses are very sensitive to dryness, sunlight or ultraviolet rays. For example, viral polyhedrons are easily inactivated under ultraviolet light, which affects the popularization and application of insect viruses

Method used

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  • Photoresponsive insect virus insecticide and preparation method thereof
  • Photoresponsive insect virus insecticide and preparation method thereof

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preparation example Construction

[0029] A method for preparing a photoresponsive insecticide for insect viruses, comprising the following steps:

[0030] (1) adding the insect virus dry powder in the dimethylformamide solvent, stirring and mixing evenly to form a mixture;

[0031] (2) Tetraethylthiuram disulfide, ethylene glycol, triethanolamine, hexamethylene diisocyanate, and dibutyltin dilaurate are added to the mixture for reaction; the specific addition step can be the step (2) of the embodiment -(4);

[0032] (3) After reacting for 12 to 24 hours, the obtained product was immersed in acetonitrile for more than 24 hours to obtain a transparent gel-like object.

Embodiment 1

[0034] A method for preparing a photoresponsive insecticide for insect viruses, comprising the following steps:

[0035] (1) Add 0.1 g of Spodoptera litura polyhedrosis virus dry powder into 2.2 mL of dimethylformamide solvent, stir and mix evenly to form mixture A;

[0036] (2) Add 591 mg of tetraethylthiuram disulfide and 524 mg of ethylene glycol into mixture A, stir and mix evenly to obtain mixture B;

[0037] (3) Add 149 mg of triethanolamine and 1.01 g of hexamethylene diisocyanate to mixture B, stir and mix evenly to obtain mixture C;

[0038] (4) Add 5 mg of dibutyltin dilaurate dropwise to mixture C, and stir to react. After 24 hours of stirring and reacting, the obtained product is immersed in 20 mL of acetonitrile solution containing 5% methanol for 48 hours to obtain transparent straw color coagulation gelatinous object.

Embodiment 2

[0040] A method for preparing a photoresponsive insecticide for insect viruses, comprising the following steps:

[0041] (1) Add 0.1 g of Spodoptera litura polyhedrosis virus dry powder into 2.2 mL of dimethylformamide solvent, stir and mix evenly to form mixture A;

[0042] (2) Add 197 mg of tetraethylthiuram disulfide and 757 mg of ethylene glycol into mixture A, stir and mix evenly to obtain mixture B;

[0043] (3) Add 149 mg of triethanolamine and 1.01 g of hexamethylene diisocyanate to mixture B, stir and mix evenly to obtain mixture C;

[0044] (4) Add 5 mg of dibutyltin dilaurate dropwise to mixture C, and stir to react. After 24 hours of stirring and reacting, the product obtained after the reaction is immersed in 20 mL of acetonitrile solution containing 5% methanol for 48 hours to obtain a transparent rice straw colored gel-like object.

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Abstract

The invention relates to the technical field of biopesticides, in particular to a photoresponsive insect virus insecticide and a preparation method thereof. The preparation method of the insect virusinsecticide comprises the following steps: (1) adding dry insect virus powder into dimethylformamide, and carrying out uniform stirring and mixing to form a mixture; (2) adding tetraethylthiuram disulfide, ethylene glycol, triethanolamine, hexamethylene diisocyanate and dibutyltin dilaurate into the mixture; and (3) after a reaction for 12-24 hours, immersing the obtained product into acetonitrilefor 24 hours or more to obtain a transparent gelatinous object. The insect virus insecticide is safe to use, friendly to environment and good in photoresponse performance, insect viruses can be effectively prevented from being killed by ultraviolet rays, the preservation time of the insect virus insecticide is prolonged, and the insecticidal efficiency of the insecticide is improved.

Description

technical field [0001] The invention relates to the technical field of biological pesticides, in particular to a photoresponsive insect virus insecticide and a preparation method thereof. Background technique [0002] The country is currently committed to developing a healthy China, advocating green development, developing, producing and applying biological pesticides, protecting the ecological environment and promoting sustainable agricultural development, which will become a new trend in my country's industrial development. Although chemical pesticides still occupy a dominant position in the pesticide industry, biological pesticides have the advantages of low toxicity to humans and animals, good environmental compatibility, and relatively low resistance to pests and diseases, so they are more in line with the requirements of modern society for agricultural production and pesticides. [0003] Insect viruses, as biopesticides, have been continuously researched and promoted i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/10A01N63/40A01P7/04
CPCA01N25/10A01N63/00
Inventor 蒲侠罗萌郑常格赖创荣
Owner ZHONGKAI UNIV OF AGRI & ENG
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