Microcapsule aqueous suspension of phytocide clomazone and method of producing the same

Abstract

The invention discloses a microcapsul water suspension agent of herbicide clomazone and preparation method thereof. The slow-release microcapsule water suspension agent uses the clomazone as core material by complex coacervation method and uses the sodium cellulose glycolate, gelatin and arabic gum as wall material with particle diameter of 0.1-10micron. The capsule wall material is non-poisonous and biological degradable. The microcapsule water suspension agent has features of high stabilization, slow-release of effective component, deviation prevention, super efficiency, low toxicity, economy, safety. The microcapsule can be widely used for preventing and controlling the broad leaved weed and gramineous weed in crops field such as soya, cassava, corn, rape, sugar cane and tobacco.

Description

technical field [0001] The invention relates to a herbicide microcapsule and a preparation method thereof, in particular to a herbicide clomazone with clomazone as the core material, carboxymethyl cellulose sodium, acacia gum and gelatin as the wall materials A microcapsule aqueous suspension of oxazone and a preparation method thereof. Background technique [0002] Clomazone, trade name clomazone, chemical name 2-(2-chlorophenyl)methyl-4,4-dimethyl-3-isoxazolone, belongs to isoxazoline Ketone herbicides can control barnyardgrass, foxtail, crabgrass, solanum nigrum, cypress, water spiny needles, blueberry, willow-leaved Polygonum, Annual gramineous and broad-leaved weeds such as cocklebur, quinoa, wild watermelon seedlings, and wolfberry have a strong inhibitory effect on perennial thorns, thistles, thorns, and lettuce. The existing formulations of herbicides with clomazone as an active ingredient are mainly emulsifiable concentrate preparations, which have the following d...

AI Technical Summary

Problems solved by technology

[0003] ① Contains a large amount of organic solvents, such as toluene, xylene, etc., the discharge of which not only causes waste of resources, but also seriously pollutes the ecological environment;

[0004] ② Clomazone has a relatively high vapor pressure, is volatile, and has a low utilization rate, resulting in a large amount of pesticides and high costs;

[0005] ③It is easy to drift and harm adjacent sensitive crops. The drift of clomazone mist or steam can cause phytotoxicity to sensitive plants. In order to avoid the harm of drift, the conditions for mechanical application on the ground are harsh: low pressure and large water spray volume must be used , choose the wind hour to spray in the morning and evening, but also pay attention to the wind direction and speed, and avoid sensitive crops such as fruit trees and vegetables; let alone spraying with an airplane

However, the preparation process of the invention patent application is relatively complicated, the reaction time is long, and the wall material of the microcapsule product is not easy to degrade

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