Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of acetochlor microcapsule sustained-release agent and preparation method thereof

A technology of acetochlor and microcapsules, which is applied in the field of acetochlor microcapsule sustained-release agents and its preparation, can solve the problems of complex preparation methods, short duration of action, and increased pesticide enrichment, and achieve simplified process flow, The effect of less drug residue and good control effect

Inactive Publication Date: 2015-09-23
SOUTHWEST UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are mainly two deficiencies in the existing acetochlor formulations: the one is that the effective utilization rate is low, it is easy to degrade and lose in nature, and the duration is short; Phytotoxicity, increase the enrichment of pesticides in the environment, and intensify the impact of pesticides on agricultural products and the environment
Although acetochlor microcapsule suspension has been registered before, the preparation method is complicated, the drug stability is poor, and the control effect is unstable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: 5% Acetochlor Microcapsule Sustained Release

[0020] Acetochlor 5 kg, styrene 1 kg, alkylphenol and ethylene oxide condensate 1 kg, butyl methacrylate 4 kg, diacetone acrylamide 10 kg, sodium bicarbonate 0.1 kg, potassium persulfate 0.01 kg , ethylene glycol 0 kg, and water to 100 kg.

[0021] (1) Stir the emulsifier and sodium bicarbonate with water to form a solution, and raise the temperature of the emulsifier (alkylphenol and ethylene oxide condensate) aqueous solution to 50°C;

[0022] (2) Dissolve acetochlor in styrene, then add the oil phase monomer (butyl methacrylate), stir and mix thoroughly;

[0023] (3) Add the mixed solution obtained in step (2) to the emulsifier aqueous solution obtained in step (1), then add the aqueous sodium bicarbonate solution obtained in step (1), and heat up to 70°C while stirring (rotating at 500 r / min), keeping Keep the temperature constant, add the initiator (potassium persulfate) and diacetone acrylamide at one t...

Embodiment 2

[0024] Example 2: 10% Acetochlor Microcapsule Sustained Release

[0025] Acetochlor 10 kg, styrene 15 kg, castor oil polyoxyethylene ether 1 kg, nonylphenol polyoxyethylene ether 1 kg, condensate of sorbitol fatty acid ester and ethylene oxide 2 kg, butyl methacrylate 12 kg of ester, 20 kg of diacetone acrylamide, 10 kg of sodium bicarbonate, 0.1 kg of potassium persulfate, 0.03 kg of benzoyl peroxide, 0.4 kg of propylene glycol, and 100 kg of water.

[0026] (1) Stir the emulsifier and sodium bicarbonate with water to form a solution, and the emulsifier (condensate of castor oil polyoxyethylene ether, nonylphenol polyoxyethylene ether, sorbitol fatty acid ester and ethylene oxide) The temperature of the aqueous solution is raised to 50°C;

[0027] (2) Dissolve acetochlor in styrene, then add the oil phase monomer (butyl methacrylate), stir and mix thoroughly;

[0028] (3) Add the mixed liquid obtained in step (2) to the emulsifier aqueous solution obtained in step (1), th...

Embodiment 3

[0029] Example 3: 20% Acetochlor Microcapsule Sustained Release

[0030] Acetochlor 20 kg, styrene 8 kg, octanylphenol polyvinyl chloride ether 12 kg, sodium dodecylbenzene sulfonate 18 kg, butyl methacrylate 6 kg, diacetone acrylamide 6 kg, bicarbonate Sodium 0.2 kg, benzoyl peroxide 0.4 kg, propylene glycol 0.5 kg, ammonium sulfate 0.1 kg, urea 0.1 kg, and water supplemented to 100 kg.

[0031] (1) Stir the emulsifier and sodium bicarbonate with water to form a solution, and raise the temperature of the emulsifier (octylphenol polyvinyl chloride ether, sodium dodecylbenzenesulfonate) aqueous solution to 50°C;

[0032] (2) Dissolve acetochlor in styrene, then add the oil phase monomer (butyl methacrylate), stir and mix thoroughly;

[0033] (3) Add the mixed solution obtained in step (2) to the emulsifier aqueous solution obtained in step (1), then add the aqueous sodium bicarbonate solution obtained in step (1), and heat up to 70°C while stirring (rotating at 550 r / min), k...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an acetochlor microcapsule controlled release formulation and a preparation method thereof. The controlled release formulation is mainly formed by coating acetochlor by an interfacial polymerization method, and comprises the following compositions in percentage by mass: 1%-50% of acetochlor, 1%-30% of emulsifier, 1%-30% of styrene, 1%-30% of butyl methacrylate, 0.1%-20% of diacetone acrylamide, 0.1%-10% of sodium bicarbonate, 0.01%-5% of initiator, 0-5% of antifreezing agent, and the balance being water. The controlled release formulation is stable in properties, high in loading rate, less in drug residues, good in controlled release property, and high in control efficiency. The half life period of the acetochlor microcapsule controlled release formulation is 2.50-5.17 times that of common formulation type acetochlor emulsifiable concentrate, and the control effect of the controlled release formulation is obviously higher than that of an equal amount of emulsifiable concentrate after 40-60 days.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to herbicides, in particular to an acetochlor microcapsule slow-release agent and a preparation method thereof. Background technique [0002] Acetochlor is stable in nature, not easy to volatilize and photolyze. It is one of the most important herbicides in the world and one of the most widely used selective pre-emergent herbicides in my country. It mainly inhibits cell growth by hindering protein synthesis. Stop the growth of weed shoots and young roots, and then make the weeds die. However, due to the degradation of acetochlor by microorganisms in the soil, its persistence period is relatively short, which leads to the abuse of acetochlor, causes environmental pollution, and affects the market application prospect of acetochlor. Therefore, develop a kind of slow-release agent that wraps acetochlor with macromolecule or natural material, make its active ingredient release under...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/28A01N37/26A01P13/00
Inventor 钱坤郭艳珍何林
Owner SOUTHWEST UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com