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A technology of microcapsule suspending agent and pendimethalin, which is applied in the field of pesticides, can solve the problems of groundwater residual pollution, herbicide damage to crops, poor herbicidal effect, etc. Effect
Active Publication Date: 2013-02-06
河南金田地农化有限责任公司
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Pendimethalin is a selective systemic herbicide with poor conductivity
Leaching has brought many problems to the use of herbicides: 1. Herbicides are leached downwards, resulting in poor weeding effect and easily causing residual groundwater pollution; 2. Through leaching, herbicides enter the soil layer of crop roots and cause Potentially selective herbicides damage crops; 3. Reverse leaching causes herbicides to move to the soil surface and be lost through volatilization
Due to thei
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[0039] Example 1:
[0040] 0.1% pendimethalin microcapsule suspension
[0041] Formula: 0.1kg of pendimethalin, 0.1kg of hydrochloric acid, 1kg of xylene, 1kg of nonylphenol polyoxyethylene ether of agricultural milk, 0.1kg of urea-formaldehyde resin, and make up to 100kg with water.
[0042]Preparation process: In a reaction vessel with heat preservation and stirring, dissolve the active ingredient in a co-solvent, then add the co-agent, solvent and capsule wall material and stir evenly at high speed, then add the initiator, change to normal stirring, and gradually heat up to 60°C, then ordinary stirring at 60°C for 6 hours under heat preservation conditions to obtain pendimethalin-containing microcapsule suspensions; the process parameters are: the high-speed stirring speed is controlled at 1000-1500 rpm, and the ordinary stirring speed is controlled at 60~150 rpm.
[0043] According to the same preparation process as in Example 1, the following examples were prepared.
Example Embodiment
[0044] Example 2:
[0045] 1% pendimethalin microcapsule suspension
[0046] Formula: pendimethalin 1kg, toluene 2kg, ethylenediamine 0.5kg, castor oil polyoxyethylene ether 2.5kg, polyisocyanate 1kg, water to make up to 100kg.
Example Embodiment
[0047] Example 3:
[0048] 6% pendimethalin microcapsule suspension
[0049] Formula: pendimethalin 6kg, methanol 5kg, triethylamine 0.5kg, polysorbate-80 5kg, acacia gum 2.5kg, water to make up to 100kg.
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Abstract
The invention discloses a micro-capsule suspending agent containing pendimethalin. The micro-capsule suspending agent is prepared by taking pendimethalin or a compound of the pendimethalin and an active component II as an active ingredient, and complementing to 100% by using a capsule wall material, an initiator, a promoter, a cosolvent and a solvent, wherein the active component II can be any one of alachlor, metolachlor, acetochlor, pretilachlor, propisochlor or butachlor or the like. The micro-capsule suspending agent can be used for prevention and treatment of annual and perennial weeds in sugarcane or corn fields, and has the advantages of long lasting period, high working efficiency, synergies, safety, environmental protection and the like.
Description
technical field [0001] The invention relates to the technical field of pesticides, in particular to a pendimethalin-containing microcapsule suspension. Background technique [0002] Pendimethalin (pendimethalin), also known as Shitianbu, Bicaotong, Pendimethalin, Shacaotong, Caicaotong, was first developed by the American Cyanoamide Company in 1972 (P), and the chemical name of the active ingredient is N- 1-(Ethylpropyl)2,6-dinitro-3,4-dimethylaniline. Pendimethalin is a selective systemic herbicide with poor conductivity. Pendimethalin does not affect the germination of weed seeds, but acts after the young shoots, stems and roots absorb the agent during the germination process of weed seeds. The absorption part of dicotyledons is the hypocotyl, and the monocotyledonous plants are young shoots. The symptoms of damage are that the young shoots and secondary roots are inhibited. The reason is that the protein synthesis of these plants is inhibited. Control effect. Suitable...
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