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a herbicide

A herbicide and cosolvent technology, applied in the field of pesticides, can solve the problems of environmental pollution, short residual period, long residual period, etc., and achieve the effects of good degradation effect, good control effect, and less dosage use.

Active Publication Date: 2016-11-23
嫩江绿芳化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, herbicide residues in the soil affect the persistence of herbicides and the safety of the environment
From the aspect of weed control, herbicides should have a certain residual period. If the residual period is too short, the weeding effect will not be good, but if the residual period is too long, it will cause phytotoxicity to the recommended crops.
However, from an environmental point of view, the shorter the residual period of herbicides, the better. Herbicides are too stable, not easy to degrade, and have a large amount of residues in the environment, which will cause environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Octylphenol polyoxyethylene ether sulfonate

[0019] Mix 10 mol of octylphenol polyoxyethylene ether (OP-4) and 10 mol of pyridine into the reaction vessel, add 15 mol of thionyl chloride dropwise in a constant temperature water bath, stir and react at 80°C for 2 hours, and synthesize chlorooctyl Base phenol polyoxyethylene ether, get the obtained 7.5mol chlorooctylphenol polyoxyethylene ether and join in water, the mass ratio of chlorooctylphenol polyoxyethylene ether and water is 1:1.5, then add 5mol sulfonating agent Sodium sulfite (Na 2 SO 3 ), placed in a high-pressure reactor, and reacted at 150°C for 8 hours under vigorous stirring to obtain a light yellow viscous substance. The crude product was dissolved in a mixture of isopropanol and water with a volume ratio of 2:1, and then extracted with petroleum ether , to remove unreacted raw materials and other oil-soluble impurities, separate the lower layer, distill under reduced pressure, and dry in vacu...

Embodiment 2

[0020] Example 2 Herbicide 1

[0021] Wheatgrass fluoromethyl 35 g, quinclorac 40 g and bensulfuron-methyl 8g, surfactant 16g prepared in Example 1, sodium dibutylnaphthalene sulfonate 260g, cosolvent ethanol 160g, polyethylene glycol 40g And put 30 g of butanobuterol into the reaction kettle, stir evenly and completely dissolve, slowly add 800 g of water, continue mixing and stirring for 2 hours, and obtain the herbicide.

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PUM

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Abstract

The invention provides a weed killer. The weed killer comprises effective active components, a surface active agent, nekal, cosolvent ethyl alcohol, water, polyethylene glycol and piperonyl butoxide. The effective active components comprise flamprop-methyl, quinclorac and bensulfuron methyl. The surface active agent is octylphenol polyoxyethylene ether sulfonate. The weed killer is quite good in weed removing effect, safe and efficient. The pesticide degradation effect is good, and the quantity of residuals is small.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to herbicides. Background technique [0002] With the rapid development of science and technology, chemical weeding, as a modern and practical technology, plays a huge role in weed control. Although the development of chemical weeding technology is not long, but the development speed is relatively fast. With the development of China's agricultural modernization and the gradual transfer of agricultural labor force, cultivation methods tend to be large-scale and intensive, and the demand for pesticides has increased significantly. Among them, the growth rate of herbicides in recent years is much higher than the development level of insecticides and fungicides, accounting for about 1 / 3 of the proportion of pesticide production. [0003] At present, there are many kinds of herbicides, which can be divided into stem and leaf treatment agents and soil sealing treatment agents accordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/36A01N25/30A01P13/00A01N43/42A01N37/22
Inventor 秦赤杨春香
Owner 嫩江绿芳化工有限公司