High-efficient cyhalothrin microcapsule suspending agent and preparation method thereof

A technology of high-efficiency cyhalothrin and microcapsule suspension agent, which is applied in the fields of botanical equipment and methods, insecticides, acaricides, etc., can solve problems such as short duration, achieve long duration and save man-hours , exposure toxicity and odor reduction effects

CN102845455AInactive Publication Date: 2013-01-02GUANGDONG ZHONGXUN AGRI TECH
3 Cites 11 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-01-02
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a high-efficient cyhalothrin microcapsule suspending agent and a preparation method thereof; the suspending agent comprises the following components by weight: 1%-10% of high-efficient cyhalothrin, 3%-20% of a capsule core solvent, 5%-30% of a capsule wall material, 3%-10% of an emulsifier, 1%-5% of a dispersant, 0.1%-10% of a pH adjusting agent, and the balance of deionized water. The invention also discloses the preparation method of the high-efficient cyhalothrin microcapsule suspending agent. The product of the invention is low in cost, stable in performance, good in insecticidal effect, long in persistent period, low in toxicity, friendly to environment, and safe for people and livestock, and can meet the requirements of insect pollution-free control.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an agricultural insecticide and a preparation method thereof, in particular to a high-efficacy-cyhalothrin microcapsule suspension and a preparation method thereof. Background technique

[0002] Chemical control is an important means of preventing and controlling agricultural and forestry diseases and insect pests. Chemical pesticides play a very important role in increasing agricultural production and income. However, the use of pesticides, while ensuring food safety production, also brings a series of environmental and Social Issues. Not only due to the chemical pesticide itself, but also to a large extent due to the unreasonable processing and application methods of pesticide formulations. According to reports, the utilization rate of conventional pesticides is only 20% to 30%, and the loss rate through various channels is as high as 50% to 60%. This is not only a waste of economy, but also causes extensive environmental po...

Examples

Embodiment 1

[0027] Example 1: 2% lambda-cyhalothrin microcapsule suspension.

[0028] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:2.5, adjust the pH value to 8 with sodium hydroxide, stir at a low speed at a temperature of 60°C, and keep warm for 0.5 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0029] Dissolve 2% lambda-cyhalothrin completely in 5% xylene at room temperature, add 10% urea-formaldehyde resin prepolymer aqueous solution while stirring, and shear at 2000 rpm for 10 minutes to obtain a stable O / W lotion. Reduce the rotation speed to 1000 rpm, add dilute hydrochloric acid in 5 batches within 1 hour to adjust the pH value to 2.0, polycondensation reaction o...

Embodiment 2

[0030] Example 2: 5% lambda-cyhalothrin microcapsule suspension.

[0031] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 9 with sodium hydroxide, stir at a low speed at a temperature of 80°C, and keep warm for 4 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0032] Dissolve 5% lambda-cyhalothrin completely in 12% xylene at room temperature, add 25% urea-formaldehyde resin prepolymer aqueous solution while stirring, and shear at 1500 rpm for 20 minutes to obtain a stable O / W lotion. Reduce the rotation speed to 800 rpm, add dilute hydrochloric acid in 5 batches within 1 hour to adjust the pH value to 2.0, polycondensation reaction occu...