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Pyrethrin hot fogging agent and preparation method and application thereof

A technology for pyrethrins and thermal mist, which is applied in the field of thermal mist of natural pyrethrin biopesticides and its preparation, which can solve the problems of low use efficiency, environmental pollution, and few types, and achieve low cost, economical use of medicines, and high work efficiency Effect

Inactive Publication Date: 2012-06-27
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problems that there are few kinds of control preparations for fruit fly pests (especially Bactrocera dorsalis) in current production practice, existing pesticides pollute the environment and use efficiency is low, the primary purpose of the present invention is (especially Bactrocera dorsalis) biological characteristics, with adults as the control object, to provide a high-efficiency, low-toxicity, convenient and environmentally friendly pyrethrin thermal spray

Method used

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  • Pyrethrin hot fogging agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of pyrethrin thermal mist agent comprises the following steps:

[0049] Take 5 kg of active ingredients (being pyrethrin I and pyrethrin II; the same below) with a mass content of 25% pyrethrins (prepared according to the method disclosed in Chinese patent CN 1185204C; the same below), 10 kg of castor oil polyoxyethylene ether, Mix 1kg of butanoic ether, 1kg of bis(2,2,6,6-tetramethyl-4-piperidine) sebacate, 5kg of ethylene glycol, 3kg of p-dichlorobenzene and 75kg of solvent naphtha 150# (S150) Add it into the preparation kettle, stir and prepare for 1 hour until uniform, filter through a carbon steel pipeline filter press or a ceramic press filter, and send it to a storage tank for finished product packaging to obtain pyrethrin hot spray.

[0050] The pyrethrin hot mist obtained in this embodiment is a homogeneous oily liquid without visible sediment and suspended matter; the moisture content is 0.10-0.15%, and the acidity (in terms of H 2 SO ...

Embodiment 2

[0052] The preparation method of pyrethrin thermal mist agent comprises the following steps:

[0053]Get active ingredient mass content and be 70% natural pyrethrin former drug 2kg, alkyl alcohol polyoxyethylene ether 5kg, butanobuterol 0.5kg, bis(2,2,6,6-tetramethyl-4-piperidine) 0.5kg of sebacate, 2kg of ethylene glycol, 3kg of p-dichlorobenzene and 200# (S200) 87kg of solvent oil are mixed and added to the preparation kettle, stirred for 1 hour until uniform, and passed through a carbon steel pipeline filter or ceramic Press the filter to filter, send it to the storage tank for finished product packaging, and obtain pyrethrin thermal spray.

[0054] The pyrethrin hot mist obtained in this embodiment is a homogeneous oily liquid without visible sediment and suspended matter; the moisture content is 0.15-0.18%, and the acidity (in terms of H 2 SO 4 Gauge) 0.09-0.15%, viscosity 7.50-8.00×10 -3 Pa·s, flash point 95.00-100.00°C, thermal storage (14 days at 54±2°C) and cold st...

Embodiment 3

[0056] The preparation method of pyrethrin thermal mist agent comprises the following steps:

[0057] Get active ingredient mass content and be 50% natural pyrethrin former medicine 0.5kg, alkyl alcohol polyoxyethylene ether 5kg, sorbate 5kg, synergistic ether 0.1kg, 95% abamectin 0.1kg, double (2, 0.5kg of 2,6,6-tetramethyl-4-piperidine) sebacate, 1kg of ethylene glycol, 3kg of p-dichlorobenzene and 84.8kg of first-line oil (Maoming Maolong Chemical Co., Ltd.) are mixed and added to the preparation kettle , stir and modulate for 1 hour until uniform, filter through a carbon steel pipeline filter press or a ceramic filter press, and send it into a storage tank for finished product packaging to obtain pyrethrin hot spray.

[0058] The pyrethrin hot fog agent obtained in this embodiment is a homogeneous oily liquid without visible sediment and suspended matter; the moisture content is 0.09-0.13%, and the acidity (in terms of H 2 SO 4 meter) 0.12-0.15%, viscosity 8.15-8.45×10 ...

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Abstract

The invention discloses a pyrethrin hot fogging agent and a preparation method and application thereof. The pyrethrin hot fogging agent consists of the following components in percentage by mass: 0.5 to 5.0 percent of raw pyrethrin, 5.0 to 10.0 percent of surfactant, 0.2 to 1.0 percent of synergist, 0.5 to 1.0 percent of stabilizing agent, 1.0 to 5.0 percent of anti-freezing agent, 3.0 percent of anti-shifting agent and the balance of solvent. The hot fogging agent can be volatilized to form micro drops of which diameter is several microns, and the micro drops can be diffused and suspended in the air for a long term, effectively contacted with organisms, voluntarily diffused and permeated to crowns of fruit trees and uniformly settled on each part of a host, so the settling effect is good and the prevention and control efficiency is high; the hot fogging agent has strong adhesive force to the surface of plants and rainwater washing resistance, and has long persistence; compared with conventional ground spraying, the hot fogging agent has the advantage of high work efficiency in use; compared with ultralow-capacity spraying of an airplane, the hot fogging agent has the advantage of low prevention and control cost; and the hot fogging agent is not required to be blended with water during spraying, and is particularly suitable for preventing and controlling trypetids in fruit trees at the places of traffic inconvenience and difficult water sources and on the hilly land.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, and in particular relates to a thermal mist of natural pyrethrin biopesticides used for the control of fruit fly pests, a preparation method and application thereof. Background technique [0002] Bactrocera dorsalis Hendel, belonging to the genus Drosophila in the family Tephritidae of the order Diptera, is an important pest that harms the fruits of various fruit trees. At present, the insect is mainly distributed in the vast areas of southern my country, and it is the quarantine object of plants in my country. Bactrocera dorsalis is an omnivorous pest with a wide range of hosts. It can harm more than 250 kinds of fruits and vegetables in more than 40 families such as citrus, guava, carambola, mango, banana, eggplant, pepper, and melon. Fruits such as rose apples, rose apples, and pomelo are the most serious damage. According to investigations, it is found that in the orchards near the urb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/18A01N65/12A01P7/04
CPCY02A50/30
Inventor 曾鑫年田梦陈凯哥赵金鹏
Owner SOUTH CHINA AGRI UNIV
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