Microcapsule suspension containing pendimethalin and clomazone and preparation method thereof

A microcapsule suspending agent, clomazone technology, which is applied in the fields of botanical equipment and methods, herbicides, algicides, biocides, etc. and other problems, to achieve the effect of simple process, easy control and low price

Inactive Publication Date: 2012-09-19
上海沪联生物药业(夏邑)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since many pesticides are difficult to add into microcapsule suspensions, there are very few types of pesticides in microcapsule suspensions.
[0012] Insecticide varieties containing a single active ingredient often have different degrees of defects in the control of agricultural pests: continuous use is easy to produce resistance, the insecticidal spectrum is not wide enough, causing greater pollution to the environment, and cannot provide comprehensive protection for crops Wait

Method used

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  • Microcapsule suspension containing pendimethalin and clomazone and preparation method thereof
  • Microcapsule suspension containing pendimethalin and clomazone and preparation method thereof
  • Microcapsule suspension containing pendimethalin and clomazone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: 5.5% pendimethalin clomazone microcapsule suspension

[0029] Synthesis of urea-formaldehyde resin prepolymer: Add urea, formaldehyde and deionized water into a three-necked flask equipped with a thermometer and a stirring device, the molar ratio of urea to formaldehyde is 1:2.0, adjust the pH to 8.5 with triethanolamine, and raise the temperature to 70 ℃, stirring at low speed for 1 hour to obtain a clear and transparent aqueous solution of urea-formaldehyde resin prepolymer;

[0030] Preparation of microcapsule suspension: Dissolve 5 g of pendimethalin and 0.5 g of clomazone in 4.0 g of xylene at room temperature, add 5 g of the above-mentioned urea-formaldehyde resin prepolymer aqueous solution and 0.5 g of polyvinyl alcohol while stirring , stirring and reacting at a high speed of 1500 rpm for 1 hour, after the oil-in-water emulsion is formed, reduce the speed to 800 rpm, add hydrochloric acid solution in 5 batches within 60 minutes to adjust the pH va...

Embodiment 2

[0031] Embodiment 2: 11% pendimethalin clomazone microcapsule suspension

[0032] Synthesis of urea-formaldehyde resin prepolymer: Add urea, formaldehyde and deionized water into a three-necked flask equipped with a thermometer and a stirring device, the molar ratio of urea to formaldehyde is 1:2.0, adjust the pH to 8.5 with triethanolamine, and raise the temperature to 70 ℃, stirring at low speed for 1 hour to obtain a clear and transparent aqueous solution of urea-formaldehyde resin prepolymer;

[0033] Preparation of microcapsule suspensions: Dissolve 10 g of pendimethalin and 1 g of clomazone in 7 g of xylene at room temperature, add 10 g of the above-mentioned urea-formaldehyde resin prepolymer aqueous solution and 0.5 g of gelatin while stirring, and spin at 1500 rpm / min high-speed stirring reaction for 1h, after the oil-in-water emulsion is formed, reduce the speed to 800 rpm, add hydrochloric acid solution in 5 batches within 60 minutes to adjust the pH value of the s...

Embodiment 3

[0034] Embodiment 3: 18% pendimethalin clomazone microcapsule suspension

[0035] Synthesis of urea-formaldehyde resin prepolymer: Add urea, formaldehyde and deionized water into a three-necked flask equipped with a thermometer and a stirring device, the molar ratio of urea to formaldehyde is 1:2.0, adjust the pH to 8.5 with triethanolamine, and raise the temperature to 70 ℃, stirring at low speed for 1 hour to obtain a clear and transparent aqueous solution of urea-formaldehyde resin prepolymer;

[0036] Preparation of microcapsule suspension: 16g of pendimethalin and 2g of clomazone were dissolved in 10g of xylene at normal temperature, and 13g of the above-mentioned urea-formaldehyde resin prepolymer aqueous solution and 0.5g of polyvinyl alcohol were added while stirring. 1500 rpm high-speed stirring reaction for 1 hour, after the oil-in-water emulsion is formed, reduce the speed to 800 rpm, add hydrochloric acid solution in 5 batches within 60 minutes to adjust the pH val...

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Abstract

The invention provides a microcapsule suspension containing pendimethalin and clomazone. The microcapsule suspension containing pendimethalin and clomazone comprises pendimethalin, clomazone, a capsule core solvent, a capsule wall material, a dispersing agent, a protective agent, a waterborne monomer and water, wherein the microcapsule suspension containing pendimethalin and clomazone is obtained by complexing binitro toluidine and oxazolone herbicides according to a certain ratio through a chemical process; the microcapsule suspension containing pendimethalin and clomazone is a novel disposable paddy field soil treatment pesticide, which can be absorbed by roots and seedlings of plants, can stop the generation of chlorophyll of a sensitive plant and the accumulation of plastid pigment, generates albinism on the plants, inhibits hill reaction in weed photosynthesis, causes chlorosis at pointed ends and edges of weed leaves; and finally, the whole weed plants are withered and die; and a pesticide composite provided by the invention has a very good control effect on grassy weeds, Cyperaceae weeds and broad leaf weeds of crops.

Description

technical field [0001] The invention relates to a microcapsule suspension pesticide composition containing pendimethalin and clomazone and a preparation method, belonging to the technical field of compound pesticides. Background technique [0002] Pendimethalin molecular formula: C 13 h 19 N 3 o 4 , Chinese name: N-(1-ethylpropyl)-2,6-dinitro-3,4-dimethylaniline. [0003] [0004] Features: It mainly inhibits the division of meristem cells, and does not affect the germination of weed seeds, but works after the young shoots, stems and roots absorb the medicine during the germination process of weed seeds. Hypocotyl is the absorption part of dicotyledonous plants, and young shoots are the absorption part of monocotyledonous plants. The symptoms of damage are that young shoots and secondary roots are inhibited. Pendimethalin is a selective pre-emergence and post-emergence dryland soil treatment herbicide. Weeds absorb the chemical through the germinating shoots, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80A01N33/18A01N25/04A01N25/28A01P13/02
Inventor 司贤良
Owner 上海沪联生物药业(夏邑)股份有限公司
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