Nicosulfuron soluble granule and preparation method thereof

A nicosulfuron-methyl and soluble technology is applied in the field of nicosulfuron-methyl soluble granules and the preparation thereof, which can solve the problems of reducing the exertion of drug efficacy, low content of active ingredients, affecting disintegration and suspension rate, etc. Packaging and transportation costs and storage space, improving the content of active ingredients, and facilitating the effect of drug efficacy

CN102726430AActive Publication Date: 2012-10-17QINGDAO HANSEN BIOLOGIC SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-10-17

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Abstract

The invention relates to a nicosulfuron soluble granule and a preparation method of the nicosulfuron soluble granule. The nicosulfuron soluble granule is prepared from the following components in percentage by weight: 1%-70% of nicosulfuron, 0.5%-30% of alkali compound, and the balance of agricultural preparation auxiliary elements. The preparation method for the nicosulfuron soluble granule comprises the steps of preparing the raw materials; uniformly mixing ethanol with penetrating agent for later use; crushing and mixing the raw materials; squeezing, pelleting, drying and sieving the raw materials. Due to the nicosulfuron soluble granule, the difficulty that a soluble granule is difficult to prepare as the nicosulfuron is difficult to solve in water is overcome. Compared with a dispersible oil suspension, the content of active ingredients is increased; the dosage in a unit area is reduced; a large quantity of packaging materials, transportation cost and storage space can be saved, no organic solvent is used; and the production cost is greatly lowered. Moreover, the prepared soluble granule has good water solubility, and is beneficial to bringing pesticide effects into play.
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Description

technical field

[0001] The invention belongs to the technical field of agricultural herbicides, and in particular relates to a nicosulfuron-methyl soluble granule and a preparation method thereof. Background technique

[0002] Nicosulfuron (nicosulfuron), also known as Yu Nongle; its chemical name is 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylaminosulfonyl)-N,N-dimethyl Niacinamide. Nicosulfuron is a systemic herbicide, which can be absorbed by the stems, leaves and roots of weeds, and then conducts in the plants, causing growth stagnation, chlorosis of stems and leaves, and gradual death of sensitive plants. Generally, they die within 20-25 days. But it takes longer for some perennial weeds in lower temperatures. The efficacy of pesticide application is good before the 4-leaf stage after budding, and the efficacy of pesticide application decreases when the seedlings are large. The drug has pre-emergence herbicidal activity, but the activity is lower than that of post-emergen...

Examples

Embodiment 1

[0040] Components and weight: 31.6kg of nicosulfuron technical substance with a purity of 95%, 5kg of alkaline compound sodium carbonate, wetting and dispersing agent calcium lignosulfonate and sodium lauryl sulfate, 5kg and 1.5kg respectively, Penetrant fatty alcohol polyoxyethylene ether 10kg, filler sodium sulfate 46.9kg.

[0041] Absolute ethanol: 5kg.

Embodiment 2

[0043] Components and weight: 42.1kg of nicosulfuron technical substance with a purity of 95%, basic compound sodium carbonate and sodium bicarbonate, 5kg and 2kg respectively, wetting and dispersing agent methylnaphthalenesulfonic acid formaldehyde condensate sulfate and Sodium dodecylbenzene sulfonate, 8kg and 2kg respectively, penetrant dioctyl sulfosuccinate sodium salt 8kg, filler urea 34.9kg.

[0044] Absolute ethanol: 6kg.

Embodiment 3

[0046] Components and weight: 52.7kg of nicosulfuron technical substance with a purity of 95%, basic compound sodium bicarbonate and sodium hydroxide, 8kg and 2kg respectively, wetting and dispersing agent sodium methylene naphthalenesulfonate dibutyl The naphthalene sulfonic acid formaldehyde condensate and the pull-off powder are 6kg and 1.5kg respectively, the penetrant laurocaprazine is 3kg, and the filler sodium chloride is 26.8kg.

[0047] Absolute ethanol: 10kg.