CN105660669A

CN105660669A - Anti-decomposition nicosulfuron suspending agent and preparation method thereof

Info

Publication number: CN105660669A
Application number: CN201610118159.2A
Authority: CN
Inventors: 陈军; 邹勇; 谢石发; 张玉坤; 彭述明; 王敏; 吴吉龙
Original assignee: Hu'nan Agricultural University Heartale Agrochemicals Co Ltd
Current assignee: Hu'nan Agricultural University Heartale Agrochemicals Co Ltd
Priority date: 2016-03-02
Filing date: 2016-03-02
Publication date: 2016-06-15

Abstract

The invention discloses an anti-decomposition nicosulfuron suspending agent. The anti-decomposition nicosulfuron suspending agent consists of the following components in percentage by weight: 1 to 20 percent of nicosulfuron, 1 to 10 percent of an emulsifier, 1 to 5 percent of a wetting agent, 1 to 5 percent of a dispersant, 1 to 10 percent of a stabilizing agent, 0.1 to 0.2 percent of xanthan gum, 0.8 to 2 percent of magnesium aluminum silicate, 1 to 6 percent of urea, 1 to 5 percent of white carbon black, 0.1 to 1 percent of an antifoaming agent, and the balance of water. The invention further discloses a preparation method for the anti-decomposition nicosulfuron suspending agent. The new anti-decomposition nicosulfuron suspending agent provided by the invention is high in dispersing performance, stable in performance, and convenient to transport and store, and is the development trend of the preparation formulation of current pesticide preparations; the use of an organic solvent and an auxiliary agent is avoided; the pollution to environment is greatly reduced; the pesticide processing cost is reduced.

Description

The nicosulfuron suspension agent of a kind of anti-decomposition and its preparation method

Technical field

The invention belongs to pesticide field, it is specifically related to nicosulfuron suspension agent and the preparation technology of a kind of anti-decomposition.

Background technology

Nicosulfuron is interior absorption weedicide, can be weeds stem leaf and root absorption, conduct in plant materials subsequently, cause sensitive plant cessation of growth cessation, stem leaf chlorisis, withered gradually, generally death in 20-25 days, but when temperature is lower, some perennial weeds is needed the longer time. Dispenser good drug efficacy before 4 leaf phases after bud, dispenser drug effect decline when seedling is big. This medical instrument has weeding activity before bud, but activity is relatively low after bud. Annual and perennial gramineous weeds, part broadleaf weeds can be prevented and kill off. Test shows, the susceptibility strong weeds of perception are had grass, Herba Setariae Viridis, wild avena sativa, Amaranthus retroflexus; The medium weeds of susceptibility have Ben Shi knotweed, rule grass, purslane, Sheathed Monochoria, Siberian cocklebur and piemarker, nutgrass flatsedge; The poor weeds of susceptibility mainly contain lamb's-quarters, black nightshade, Tradescantia albiflora, summer cypress and weasel lobe flower.

Usual nicosulfuron is processed into and dispersibles oil-suspending agent, wettable powder, the formulation products such as water dispersible granules, main based on 4% nicosulfuron oil-suspending agent on the market, this formulation effective constituent is low, and containing a large amount of organic solvents, make formulation cost higher, although wettable powder, water dispersible granules capacitive granula can solve the problem, but not catching up with in processing units, cause productivity underground low, the preparation of production does not reach the performance requiring finally to cause drug effect in use procedure.

Summary of the invention

In order to solve the problems of the technologies described above, it is good that the present invention provides a kind of dispersing property, stable performance, the nicosulfuron suspension agent of a kind of anti-decomposition efficiently convenient for production and preparation technology.

Technical scheme: the nicosulfuron suspension agent of a kind of anti-decomposition and its preparation method, it is made up of the component of following weight percent: nicosulfuron 1%-20%, emulsifying agent 1%-10%, wetting agent 1%-5%, dispersion agent 1%-5%, stablizer 1%-10%, xanthan gum 0.1%-0.2%, magnesium aluminum silicate 0.8%-2%, urea 1%-6%, white carbon black 1%-5%, defoamer 0.1%-1%, surplus is water.

Described emulsifying agent is the mixing of one or more in alkylphenol polyoxyethylene, styryl phenol polyethenoxy ether, alkaryl phenol polyethenoxy ether phosphate, castor oil polyoxyethylene ether, alkylbenzene sulfonate, disecoctylmaleate sodium sulfonate, polyhydric alcohol fatty acid ester and ethylene oxide adduct, Viscotrol C, sorbitan fatty vinegar Soxylat A 25-7.

Described wetting agent is the mixing of one or more in sodium lauryl sulphate, the pungent ester sodium salt of sulfosuccinic, dialkyl succinylsuccinate sulfonate, fatty alcohol-polyoxyethylene ether, sodium alkyl benzene sulfonate, sulfonated alkyl naphathalene.

Described dispersion agent be alkylphenol polyoxyethylene formaldehyde condensation products, sulfonated lignin, polycarboxylate, naphthalenesulfonate formaldehyde condensation compound, to the mixing of one or more in methoxyl group fatty acyl amido Phenylsulfonic acid.

Described stablizer is acid binding agent, polyvinylpyrrolidone, citric acid, the mixing of one or more in Kathon CG KF88.

Described water is deionized water.

The preparation method of the nicosulfuron suspension agent of described a kind of anti-decomposition:

1. xanthan gum is bubbled open for subsequent use by the content deionized water of 2%.

2. magnesium aluminum silicate is bubbled open for subsequent use according to the content deionized water of 10%.

3. accurately taking emulsifying agent, dispersion agent, wetting agent, stablizer, urea adds after appropriate deionized water dissolving in suction still, then with appropriate water by clean for bucket rinse.

4. taking and accurately take white carbon black, stablizer, defoamer adds in still.

5. accurately take the former medicine of nicosulfuron to add in still.

6. taking appropriate water in still, adjust ph is 3-4.

7. stirring tank is uniformly mixed 30 minutes, it is necessary to stir.

8. after crossing colloidal mill, at least grinding eight times, detection particle diameter, defective returns to sand milling.

9. the qualified thickening material soaked in advance that adds shears 40 minutes.

10. leaving standstill, disappear bubble, and it is qualified to detect.

The nicosulfuron suspension agent dispersing property that the present invention obtains is good, and stable performance, avoids the use of organic solvent and auxiliary agent, greatly reduces the pollution to environment, and pesticide processing cost is reduced, convenient transport and storage.

Embodiment

In order to understand the essence of the present invention better; below in conjunction with embodiment, the content of the present invention is described in further detail; content mentioned in embodiment is limitation of the invention not; the following stated is only for explaining the present invention; for not deviateing the present invention's spirit and principle amendment, replacement or the improvement made, all belong to the scope of protection of present invention.

Embodiment one: 10% nicosulfuron suspension agent

According to the technical scheme of the present invention, nicosulfuron 10%, add emulsifying agent alkylbenzene sulfonate and disecoctylmaleate sodium sulfonate 4%, add wetting agent sulfosuccinate dioctyl ester sodium salt 1% again, permeate agent ester sodium sulfonate 2%, urea 5%, defoamer 0.3%, white carbon black 2%, adds deionized water, acid binding agent 5%, citric acid 1%, polyvinylpyrrolidone 2%, stirs after even sand milling makes particle diameter reach criterion of acceptability, shear and add the magnesium aluminum silicate xanthan gum soaked in advance, obtained 10% nicosulfuron suspension agent.

Embodiment two: 15% nicosulfuron suspension agent

According to the technical scheme of the present invention, nicosulfuron 15%, add emulsifying agent alkylbenzene sulfonate and disecoctylmaleate sodium sulfonate 4%, add wetting agent sulfosuccinate dioctyl ester sodium salt 1% again, permeate agent ester sodium sulfonate 2%, urea 5%, defoamer 0.3%, white carbon black 2%, adds deionized water, acid binding agent 5%, citric acid 1%, polyvinylpyrrolidone 2%, stirs after even sand milling makes particle diameter reach criterion of acceptability, shear and add the magnesium aluminum silicate xanthan gum soaked in advance, obtained 15% nicosulfuron suspension agent.

Embodiment three: 20% nicosulfuron suspension agent

According to the technical scheme of the present invention, nicosulfuron 20%, add emulsifying agent alkylbenzene sulfonate and disecoctylmaleate sodium sulfonate 4%, add wetting agent sulfosuccinate dioctyl ester sodium salt 1% again, permeate agent ester sodium sulfonate 2%, urea 5%, defoamer 0.3%, white carbon black 2%, adds deionized water, acid binding agent 5%, citric acid 1%, polyvinylpyrrolidone 2%, stirs after even sand milling makes particle diameter reach criterion of acceptability, shear and add the magnesium aluminum silicate xanthan gum soaked in advance, obtained 20% nicosulfuron suspension agent.

Embodiment four: resolution ratio measuring

It it is below the rate of decomposition synopsis of the various embodiments described above nicosulfuron suspension agent

Condition of storage	Embodiment one rate of decomposition	Embodiment two rate of decomposition	Embodiment three rate of decomposition
				Normal temperature 25 DEG C (15 days)	0.4%	0.2%	0.5%
Heat storage 53 DEG C (15 days)	2.8%	3.3%	3.2%
				Normal temperature (1 month)	0.8%	1.5%	1.2%
Normal temperature (3 months)	1.6%	1.8%	1.5%
				Normal temperature (6 months)	2.4%	2.8%	2.5%
Normal temperature (1 year)	4.2%	4.1%	4.2%
				Normal temperature (2 years)	6.8%	7.3%	6.5%

Result shows: nicosulfuron suspension agent of the present invention has good stability.

Claims

1. the nicosulfuron suspension agent of an anti-decomposition, it is characterized in that: be made up of the component of following weight percent: nicosulfuron 1%-20%, emulsifying agent 1%-10%, wetting agent 1%-5%, dispersion agent 1%-5%, stablizer 1%-10%, xanthan gum 0.1%-0.2%, magnesium aluminum silicate 0.8%-2%, urea 1%-6%, white carbon black 1%-5%, defoamer 0.1%-1%, surplus is water;

Described emulsifying agent is the mixing of one or more in alkylphenol polyoxyethylene, styryl phenol polyethenoxy ether, alkaryl phenol polyethenoxy ether phosphate, castor oil polyoxyethylene ether, alkylbenzene sulfonate, disecoctylmaleate sodium sulfonate, polyhydric alcohol fatty acid ester and ethylene oxide adduct, Viscotrol C, sorbitan fatty vinegar Soxylat A 25-7;

Described wetting agent is the mixing of one or more in sodium lauryl sulphate, the pungent ester sodium salt of sulfosuccinic, dialkyl succinylsuccinate sulfonate, fatty alcohol-polyoxyethylene ether, sodium alkyl benzene sulfonate, sulfonated alkyl naphathalene;

Described dispersion agent be alkylphenol polyoxyethylene formaldehyde condensation products, sulfonated lignin, polycarboxylate, naphthalenesulfonate formaldehyde condensation compound, to the mixing of one or more in methoxyl group fatty acyl amido Phenylsulfonic acid;

Described stablizer is acid binding agent, polyvinylpyrrolidone, citric acid, the mixing of one or more in Kathon CG KF88;

Described water is deionized water.

2. the preparation method of the nicosulfuron suspension agent of a kind of anti-decomposition according to claim 1, it is characterised in that:

1. xanthan gum is bubbled open for subsequent use by the content deionized water of 2%;

2. magnesium aluminum silicate is bubbled open for subsequent use according to the content deionized water of 10%;

3. accurately taking emulsifying agent, dispersion agent, wetting agent, stablizer, urea adds after appropriate deionized water dissolving in suction still, then with appropriate water by clean for bucket rinse;

4. taking and accurately take white carbon black, stablizer, defoamer adds in still;

5. accurately taking the former medicine of nicosulfuron adds in still;

6. taking appropriate water in still, adjust ph is 3-4;

7. stirring tank is uniformly mixed 30 minutes, it is necessary to stir;

8. after crossing colloidal mill, at least grinding eight times, detection particle diameter, defective returns to sand milling;

9. the qualified thickening material soaked in advance that adds shears 40 minutes;

10. leaving standstill, disappear bubble, and it is qualified to detect.