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Weeding corrosion inhibition granule and preparation method thereof

A technology of slow-release granules and granules, applied in herbicides and algaecides, botanical equipment and methods, biocides, etc. The effect of avoiding repeated application, short process route and preventing product waste

Inactive Publication Date: 2019-03-29
安徽工大化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, herbicides are generally diluted with water to become a liquid when used, and then sprayed into the farmland by spraying. This method has the following disadvantages: 1. During the spraying process, a large part of the liquid small molecules will volatilize into the air , will cause great pollution to the environment; 2. The volatilization of small liquid molecules will also cause waste of liquid medicine; 3. It is easy to be absorbed into the body by the operator, causing physical harm; 4. The efficacy of the medicine is short, and it takes a short time after weeds are removed New weeds will grow inside, so repeated application is required

Method used

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  • Weeding corrosion inhibition granule and preparation method thereof
  • Weeding corrosion inhibition granule and preparation method thereof
  • Weeding corrosion inhibition granule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The process of preparing furansulcotrione is as follows:

[0051] Take 20ml of methanol into a three-neck bottle, then weigh 3g of 2-chloro-3-methyl-4-methanesulfonylbenzoic acid and add it, then put it into the rotor, add 10ml of methanol, install a reflux device and a thermometer, and The mouth is coated with vacuum ester, so that the whole reaction is carried out in a sealed environment. Move the device to a magnetic stirrer and start stirring, then slowly add 1.35 g of thionyl chloride dropwise in batches. After the addition, heat up and control the temperature at 60°C. After stirring for 3 hours, the reaction is complete, and the solution turns into an oily clear liquid. Stop stirring and stop heating. Take a 350ml beaker and add tap water, the amount added is half of the capacity of the beaker, after the reaction solution is naturally cooled, pour the reaction solution into the beaker, the reaction solution quickly crystallizes into a white solid, then suck the s...

Embodiment 2-5

[0056] To prepare herbicidal sustained-release granules:

[0057] (1) Raw materials are prepared according to the proportioning in Table 1; furansulcotrione is prepared in the manner of Example 1;

[0058] (2) Add 4000 g of bentonite powder with a particle size of 4000 g of water to prepare a suspension reaction system, mix furansultrione, cyprosulfuron-methyl and penoxsulam evenly and add to the reaction system, stir evenly, and then Add fatty alcohol polyoxyethylene ether sodium sulfate to it, and react the reaction system at 0.5-0.8 atmospheric pressure for 40 minutes to obtain a slurry; fatty alcohol polyoxyethylene ether sodium sulfate is a surfactant foaming agent, non-toxic, Easy to degrade, it can be used as both surfactant and foaming agent;

[0059] (3) Extrude the above slurry into a cake with a cake press machine, dry it in vacuum, and then pulverize and granulate it, with a particle size of 0.5-2 mm.

[0060] Table 1 embodiment 2-5 raw material ratio

[0061] ...

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Abstract

The invention provides a weeding corrosion inhibition granule and a preparation method thereof, and belongs to the technical field of a herbicide. The raw materials of the weeding corrosion inhibitiongranule comprise a phase A and a phase B, wherein the phase A comprises modified bentonite porous granules; the phase B comprises furan sulcotrione, cyclosulfamuron and penoxsulam; the phase B is uniformly distributed on the surface and in the holes of the phase A. The self-made furan sulcotrione is used; the purity is higher; the medicine effect is better. In addition, the phase B is introducedin the bentonite porous modification process; active ingredients of the phase B are enabled to be uniformly distributed in the phase A; the adhesion force is increased, so that the slow release performance is improved.

Description

technical field [0001] The invention relates to the technical field of herbicide preparation, in particular to a herbicide and corrosion inhibitor granule and a preparation method thereof. Background technique [0002] In recent years, the country implements preferential policies for subsidizing early rice planting, which makes the domestic early rice planting area increase year by year. At the same time, due to the vigorous promotion of the crop rotation model, the proportion of the direct-seeding rice cultivation area has continued to expand, but the problem of weed damage caused by it is also more prominent. Weeding is often caused by untimely weeding or inadequate technology. At the same time, long-term use of single or Similar herbicide varieties increase the resistance of weeds, which in turn leads to the decline of rice quality, yield loss, and even grain failure. As a new type of high-efficiency herbicide, furasulcotrione has become a research and development hotspo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/08A01N47/36A01N43/90A01N25/08A01N25/12A01P13/00C07D307/12
CPCA01N25/08A01N25/12A01N43/08A01N43/90A01N47/36C07D307/12
Inventor 宋丰发许立信万超董永平
Owner 安徽工大化工科技有限公司
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