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Thiodiazole copper compound, and its preparation method, preparation and application

A compound, organic copper technology, applied in the direction of copper organic compounds, botanical equipment and methods, biocides, etc., can solve the problems of sensitive plant phytotoxicity, crop phytotoxicity, rust tick value-added, etc., to achieve easy industrial production, The effect of high efficiency and low cost of bacteria

Inactive Publication Date: 2015-05-13
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is characterized by an advantageous protective fungicide with low cost, but its disadvantages are: first, it is easy to cause phytotoxicity, and its use is prohibited or restricted during the flowering and young fruit stages; second, its miscibility is poor, and most of the inorganic copper preparations are Alkaline pesticides cannot be mixed with most pesticides, and it is inconvenient to use; third, it is easy to cause the value-added of mites and rust ticks, which increases the cost of control in disguise; fourth, the treatment effect is not strong, and it is not easy to use on rice use
[0008] Although copper fungicides have many advantages, excessive copper ions can easily cause phytotoxicity to crops
Studies have shown that copper ions can kill pathogenic bacteria at 10mg / L, and cause phytotoxicity to sensitive plants when the concentration reaches 30mg / L
At present, there is no relevant report on the novel thiazole-type organocopper compound and its preparation method, and there is no relevant report on the use of the novel thiazole-type organocopper compound in the prevention and control of agricultural plant diseases.

Method used

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  • Thiodiazole copper compound, and its preparation method, preparation and application
  • Thiodiazole copper compound, and its preparation method, preparation and application
  • Thiodiazole copper compound, and its preparation method, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]6.6g of 2-mercaptobenzothiazole with 99% purity, 5.4g of 2-amino-5-mercapto-1,3,4-thiadiazole with 98% purity and 260ml of 75% ethanol aqueous solution once Put it into a 500ml reaction bottle, heat and dissolve it at a temperature of 74°C to obtain solution A; add 2.5g of copper sulfate pentahydrate with a purity of 99% and 25ml of distilled water into a 500ml reaction bottle, heat, and dissolve at a temperature of 42°C Stir to make it fully dissolve, after the copper sulfate is completely dissolved in water, under the action of stirring, add solution A dropwise (0.02-0.04ml per drop) into the aqueous solution of copper sulfate, dropwise within 28min Complete, then control the temperature at 70°C, stir the reaction for 1 hour, let it stand for precipitation for 4.5 hours after the reaction, and remove the upper layer solution after the layers are fully separated. Dry in a constant temperature drying oven at 105°C to obtain a yellow-brown powder which is copper-2-mercapt...

Embodiment 2

[0035] The preparation method of copper-2-mercaptobenzothiazole-2-amino-5-mercapto-1,3,4-thiadiazole is the same as that in Example 1.

[0036] Take the following materials in percentage by weight: copper-2-mercaptobenzothiazole-2-amino-5-mercapto-1,3,4-thiadiazole 20.0% prepared in this example, octylphenol polyoxygen Vinyl ether 1.0%, dibutyl naphthalene sulfonate sodium formaldehyde condensate 4.5%, white carbon black 74.5%, according to the above ratio, the materials are fully mixed, ground and passed through a 320 mesh sieve to obtain 20% thiazole organocopper compound wettable powder.

[0037] The tested strain is rice bacterial blight, provided by the Pesticide Research Institute of Northwest Agriculture and Forestry University. The prepared 20% thiazole organocopper compound wettable powder was determined by routine antibacterial test according to conventional methods. Ling wettable powder (excipients and their contents are the same as the 20% thiazole organocopper co...

Embodiment 3

[0039] 4.5g of 2-mercaptobenzothiazole with a purity of 99%, 5.6g of 2-amino-5-mercapto-1,3,4-thiadiazole with a purity of 98%, and 180ml of a 95% mass fraction of an aqueous methanol solution once Add 2.5g of copper sulfate pentahydrate with a purity of 99% and 25ml of distilled water into a 500ml reaction flask, heat and dissolve at a temperature of 30°C Stir to make it fully dissolved. After the copper sulfate is completely dissolved in water, under the action of stirring, add solution A dropwise (0.02-0.04ml per drop) into the aqueous solution of copper sulfate, dropwise within 25min. Complete, then control the temperature at 65°C, stir the reaction for 1 hour, let it stand for precipitation for 4 hours after the reaction, remove the upper layer solution after the layers are fully separated, and wash the yellowish-brown precipitate in the lower layer with absolute ethanol (or ethanol) and water in turn, and then in constant temperature Dry it in a drying oven at 110°C to o...

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PUM

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Abstract

The invention belongs to the field of organic copper agricultural bactericides, which discloses a thiodiazole copper compound, and its preparation method, preparation and application in control of agricultural plant diseases. 2-Mercaptobenzothiazole, 2-amino-5-mercapto-1,3,4-thiadiazole and cupric salt are added into an organic solvent for reaction, and separation, washing and drying are carried out in sequence after reaction completes to obtain a novel thiodiazole copper compound. The production line has cheap and easily-accessible raw material, and simple process. The compound has stable properties and broad spectrum, can be processed into wettable powder, dry suspension and aqueous suspension, etc., and has significant control effects on various crop diseases and environment safety.

Description

technical field [0001] The invention belongs to the technical field of pesticide chemical industry, and in particular relates to a thiazole organic copper compound, a preparation method, a preparation and an application in preventing and controlling agricultural plant diseases. Background technique [0002] The molecular formula of 2-mercaptobenzothiazole is C 7 h 5 NS 2 , molecular weight 167.24, light yellow powder, soluble in alkaline solutions such as propanol, ethanol, chloroform, ammonia, sodium hydroxide and sodium carbonate, slightly soluble in benzene, insoluble in water and gasoline. It is mainly used as a rubber vulcanizing agent (accelerator M) and also as a pesticide fungicide, commonly known as hydrogen sulfide agent or M agent, but its activity is low and has not been widely used. 2-Mercaptobenzothiazole is also industrially used as a corrosion inhibitor for metal copper. In order to explore the corrosion inhibition mechanism of 2-mercaptobenzothiazole, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F1/08A01N55/02A01P1/00A01P3/00
Inventor 王永华张慧晓刘蒙蒙周伟王高学段金友
Owner NORTHWEST A & F UNIV
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