CN103070173A - Paraquat cream and its preparation technology - Google Patents
Paraquat cream and its preparation technology Download PDFInfo
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- CN103070173A CN103070173A CN2012105455625A CN201210545562A CN103070173A CN 103070173 A CN103070173 A CN 103070173A CN 2012105455625 A CN2012105455625 A CN 2012105455625A CN 201210545562 A CN201210545562 A CN 201210545562A CN 103070173 A CN103070173 A CN 103070173A
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Abstract
The invention belongs to the organic pesticide field, and discloses a paraquat cream and its preparation technology. The paraquat cream comprises the following substances, by mass, 10 parts of paraquat, 0.02-10 parts of a dispersant, 0.02-10 parts of a thickening agent, 0.002-10 parts of a stabilizing agent, 0.002-10 parts of a chelating agent, and 0.002-10 parts of an anti-freezing agent. The preparation technology comprises the following steps: uniformly mixing the dispersant, the thickening agent, the stabilizing agent, a pH adjusting agent and water, adding a paraquat mother liquor, stirring for emulsification, discharging, and cooling to obtain the paraquat cream. The paraquat cream has the advantages of high flash point, difficult combustion and explosion, safe production and use, environmental protection, low cost, strong market competitiveness, easy packaging, and excellent weeding effect.
Description
Technical field
The invention belongs to the organic agricultural chemicals applied technical field, relate to the formulations of pesticide that contain paraquat, specifically a kind of paraquat paste and preparation technology thereof.
Background technology
21st century, the use of agricultural chemicals is still one of human Main Means of struggling with disease pest and weed in agricultural production.Paraquat is a kind of quick steriland herbicide, has action of contace poison and certain systemic action.Can be absorbed by the green plant tissue rapidly, make it withered.To the not effect of non-chlorenchyma.Mainly be used in weeding on the crops such as orchard, mulberry field, corn, cotton, soybean, sugarcane.Because paraquat has efficiently, the low price advantage, is widely used at home at present.But the paraquat strong toxicity threatens very large to people, animal.In case poison, do not have specific antidote, domestic every year, the people because of paraquat poisoning death had people more than 5000.In recent years, annual National People's Congress's meeting all can have vast medical worker to propose to ban use of paraquat, and this class cry was more and more higher especially in nearest 2 years.According to media report, tens " paraquat " poisoning patients of the now every annual meeting reception of a lot of hospitals, the big doctor of order of toxicity feels more helpless, patient or dead immediately, or at the Organ Failure such as first quarter moon internal cause cardiopulmonary kidney and death.According to relevant medical literature record, its oral ingestion lethality is up to 95%-100%, and its toxicity is big startling.
Paraquat chemical name: 1,1-dimethyl-4,4-bipyridine cation salt
Structural formula:
Except causing the strong repercussion of social field as the suicide instrument, the personal safety problem that because of natural causes such as winds the paraquat molecular diffusion is caused in the dispenser process also is the key factor that paraquat may be disabled.Since to mucocutaneous have stimulate and corrosiveness, paraquat is larger to Human Health Risk, reduce it to human toxicity or the no longer direct method that human health is threatened so the paraquat taboo is whether can find with the key of can't help, and this method can be practical.
The most basic approach is exactly by the innovation research and development to product forms, develops the preparation of glue, paste or solid.Can reduce on the one hand people uses it as the suicide instrument and uses; Solve on the other hand the personal safety problem that in the dispenser process, because of natural causes such as winds the paraquat molecular diffusion is caused, certainly also with low cost.The present invention studies a kind of novel form of invention, i.e. a kind of paraquat paste and preparation technology thereof just to the problem of mankind's harm in order to solve paraquat.
Summary of the invention
Purpose of the present invention provides a kind of preparation method of paraquat paste.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of paraquat paste comprises that following quality is than material:
Preferably, its composition comprises the material of following weight portion:
Preferred, its composition comprises the material of following weight portion:
Complement to 100 parts with pH adjusting agent and water, the pH value is 5～7.
Dispersant is selected from calcium lignosulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, Fluhyzon formaldehyde compound sulfonate, neopelex, calcium dodecyl benzene sulfonate, lauryl sodium sulfate, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products, alkylphenol-polyethenoxy base ether polyoxyethylene nonylphenol ether, alkylaryl polyoxyethylene polyoxypropylene ether, polyoxyethylene polyoxypropylene base ether block copolymers, Nekal BX or fatty alcohol polyoxy ethyl ether, poly-second carboxylic esters sodium salt, KY501, KY555, KY601, among the KY602 one or more (the KY Series Dispersant is the triumphant first Science and Technology Ltd. in Jiangsu product, is the metal carboxylate polymer).
Thickener is selected from one or more (SY series thickener is the triumphant first Science and Technology Ltd. in Jiangsu product, is polyglycerol ester class) among sodium carboxymethylcellulose, aluminium-magnesium silicate, CMC, hydroxyethylcellulose, methylcellulose or polyvinyl alcohol, xanthans XG, enuatrol, potassium oleate, odium stearate, calcium stearate, triethanolamine oleate, ethanolamine oleate, oleic acid ethylenediamine, SY101, SY102, SY103, SY202, SY305, the SY405.
Stabilizing agent is selected from one or more in catechol, butyl glycidyl ether, phenyl glycidyl ether, cresyl glycidyl ether, polyethylene glycol diglycidyl ether, chloropropylene oxide, sodium sorbate, Sodium Benzoate, epoxidised soybean oil, linseed oil, quinhydrones, anthraquinone, eugenol, citric acid, hydroxy benzoate or the nipasol.
Antifreezing agent is selected from one or more in ethylene glycol, glycerine, propane diols, polyethylene glycol, sorbierite or the urea.
PH adjusting agent is selected from one or more in triethylamine, sodium hydroxide, ammoniacal liquor, acetic acid, citric acid or the phosphoric acid.Chelating agent is disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate or EDTAP dipotassium ethylene diamine tetraacetate.
The consumption of pH adjusting agent is that to make the pH value of suspending agent be 5～7.
The preparation method of paraquat paste may further comprise the steps:
(1) dispersant, thickener, stabilizing agent, PH conditioning agent, deionized water are mixed by proportioning, pH is adjusted to 5～7, is heated to 75～85 ℃, stirring and emulsifying 20～40min; Preferred mixing speed is 500～1000rpm;
(2) agricultural chemicals paraquat mother liquor is joined in the product of step (1) emulsification, dispersed with stirring is even;
(3) antifreezing agent and chelating agent are joined in step (2) product by proportioning, stir, discharging, cooling livering make paraquat paste product.
Main points of the present invention are: select suitable dispersant and thickener, between being controlled at 1%～10% respectively, adding proportion for best, is heated to 75～85 ℃ (being preferably 80 ℃) mechanical agitation emulsification, mixing speed is controlled at 500～1000rpm, and the time, 0.5h was advisable; And then the paraquat mother liquor joined in the good product of emulsification mix; The chelating agent of selecting is edetate, EDTA2Na especially, and suitable adding proportion is 1%～3%; Join at last in the system, stir, discharging cooling livering so just can the good agricultural chemicals paraquat paste of processability.
The invention has the advantages that:
1. production technology is simple, and preparation easily is conducive to suitability for industrialized production.
2. the pesticide supplying effect with the paraquat paste of the present invention preparation is good, is conducive to reduce the usage amount of agricultural chemicals.
3. the paraquat paste great advantage of the present invention's preparation is used safety exactly, can prevent that people and animals from wrongly taking, and is environment friendly and pollution-free to environment and people and animals.
Product of the present invention has advantages of that flash-point is high, nonflammable explosive, production and application safety, and environmentally friendly, product cost is low, and the market competitiveness is strong, easily packs, and herbicidal effect is good, and indices all meets the paste relevant criterion.The present invention will play certain impetus to the development of China's formulations of pesticide, and the application of its invention also can bring good economic benefit to enterprise.
Embodiment
The KY Series Dispersant is the triumphant first Science and Technology Ltd. in Jiangsu product, is the metal carboxylate polymer.SY series thickener is the triumphant first Science and Technology Ltd. in Jiangsu product, is polyglycerol ester class.PH adjusting agent is selected from one or more in triethylamine, sodium hydroxide, ammoniacal liquor, acetic acid, citric acid or the phosphoric acid.
Embodiment 1 10% paraquat paste
Each constituent content (by weight) is dispersant KY5015%, thickener SY1012%, and stabilizing agent phenyl glycidyl ether 5%, PH conditioning agent and deionized water join in the reactor, and system PH=6 is heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add 10% paraquat, stir; Add at last antifreezing agent propane diols 2%, chelating agent disodium ethylene diamine tetraacetate 2% adds deionized water to l00%.Stir, discharging cooling livering makes a kind of paraquat paste, pH=6.
1) viscosimetric analysis of the paraquat paste of preparation
The mensuration instrument of viscosity is the NDJ-1 of Shanghai Hengping Instrument ﹠ Meter Plant type rotary viscosimeter.
Temperature: 25 ℃;
Rotor: No. 3 rotors, rotating speed: 12 rev/mins;
The viscosity that records the paraquat paste that this prescription makes is 11000mPa.s,
2) dispersiveness of the paraquat paste of preparation is measured
Experimental instrument: 100ml tool plug graduated cylinder
Temperature: 25 ℃
Method of testing: in 100ml tool plug graduated cylinder, inject the running water of 100ml, in graduated cylinder, clamp-on 1 paraquat paste, turn upside down 10 times, only put 24h, observe dispersed.
Record the favorable dispersibility of the paraquat paste that this prescription makes, tool plug graduated cylinder bottom is without precipitation.Disintegrative＜12 time, the spray medicine is after two weeks, to the preventive effect of barnyard grass〉98%.
Embodiment 2 20% paraquat paste
Each constituent content (by weight) is dispersant KY5555g, thickener SY1022g, and stabilizing agent cresyl glycidyl ether 5g, pH adjusting agent and deionized water join respectively in the reactor, and system pH=6 is heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add the paraquat of 20g, stir; Add at last antifreeze glycol 2g, chelating agent disodium ethylene diamine tetraacetate 2g adds deionized water to l00g.Stir, discharging cooling livering makes a kind of paraquat paste.
The pH=6 of the paraquat paste that this prescription makes, viscosity is 10000mPa.s, favorable dispersibility, without precipitation, without cotton-shaped, medicine is sprayed after two weeks, to the preventive effect of barnyard grass in disintegrative＜15 time〉98.7%.
Embodiment 3 25% paraquat paste
Each constituent content (by weight) is dispersant KY6015g, thickener SY1032g, and stabilizing agent phenyl glycidyl ether 5g, pH adjusting agent and deionized water join respectively in the reactor, and system pH=6 is heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add the paraquat of 25g, stir; Add at last antifreezing agent propane diols 2g, chelating agent disodium ethylene diamine tetraacetate 2g adds deionized water to l00g.Stir, discharging cooling livering makes a kind of paraquat paste.
The pH=6 of the paraquat paste that this prescription makes, viscosity is 11600mPa.s, pH=6, favorable dispersibility, without precipitation, without cotton-shaped, medicine is sprayed after two weeks, to the preventive effect of barnyard grass in disintegrative＜10 time〉98.5%.
Embodiment 4 30% paraquat paste
Each constituent content (by weight) is dispersant KY6025g, thickener SY2022g, and stabilizing agent catechol 5g, pH adjusting agent and deionized water join respectively in the reactor, and system pH=6 is heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add the paraquat of 30g, stir; Add at last antifreezing agent propane diols 2g, chelating agent disodium ethylene diamine tetraacetate 2g adds deionized water to l00g.Stir, discharging cooling livering makes a kind of paraquat paste.
The pH=6 of the paraquat paste that this prescription makes, viscosity is 10500mPa.s, pH=6, favorable dispersibility, without precipitation, without cotton-shaped, medicine is sprayed after two weeks, to the preventive effect of barnyard grass in disintegrative＜12 time〉97.6%.
Embodiment 5 35% paraquat paste
Each constituent content (by weight) is dispersant neopelex 5g, thickener SY3052g, stabilizing agent cresyl glycidyl ether 5g, pH adjusting agent and deionized water join respectively in the reactor, system pH=6 is heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add the paraquat of 35g, stir; Add at last antifreezing agent propane diols 2g, chelating agent disodium ethylene diamine tetraacetate 2g adds deionized water to l00g.Stir, discharging cooling livering makes a kind of paraquat paste.
The pH=6 of the paraquat paste that this prescription makes, viscosity is 12500mPa.s, favorable dispersibility, without precipitation, without cotton-shaped, medicine is sprayed after two weeks, to the preventive effect of barnyard grass in disintegrative＜15 time〉98.0%.
Embodiment 6 40% paraquat paste
Each constituent content (by weight) is dispersant alkylaryl polyoxyethylene ether phosphate 5g, thickener SY4052g, stabilizing agent polyethylene glycol diglycidyl ether 5g, pH adjusting agent and deionized water join respectively in the reactor, system pH=6, be heated to 80 ℃, mechanical agitation emulsification 0.5h; Then add the paraquat of 40g, stir; Add at last antifreezing agent propane diols 2g, chelating agent disodium ethylene diamine tetraacetate 2g adds deionized water to l00g.Stir, discharging cooling livering makes a kind of paraquat paste.
The pH=6 of the paraquat paste that this prescription makes, viscosity is 12000mPa.s, favorable dispersibility, without precipitation, without cotton-shaped, medicine is sprayed after two weeks, to the preventive effect of barnyard grass in disintegrative＜12 time〉99.0%.
Claims (8)
1. a paraquat paste is characterized in that, comprises that following quality is than material:
2. the described paraquat paste of claim 1 is characterized in that, comprises the material of following weight portion:
3. the described paraquat paste of claim 1 is characterized in that, comprises the material of following weight portion:
Complement to 100 parts with pH adjusting agent and water, the pH value is 5～7.
4. each described paraquat paste of claim 1～3, it is characterized in that, dispersant is selected from the metal carboxylate polymer, calcium lignosulfonate, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, Fluhyzon formaldehyde compound sulfonate, neopelex, calcium dodecyl benzene sulfonate, lauryl sodium sulfate, alkyl polyoxyethylene ether sulfonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products, alkylphenol-polyethenoxy base ether polyoxyethylene nonylphenol ether, alkylaryl polyoxyethylene polyoxypropylene ether, polyoxyethylene polyoxypropylene base ether block copolymers, Nekal BX or fatty alcohol polyoxy ethyl ether, poly-second carboxylic esters sodium salt or carboxylate polymer.
5. each described paraquat paste of claim 1～3, it is characterized in that, thickener is selected from one or more in sodium carboxymethylcellulose, aluminium-magnesium silicate, CMC, hydroxyethylcellulose, methylcellulose or polyvinyl alcohol, xanthans XG, enuatrol, potassium oleate, odium stearate, calcium stearate, triethanolamine oleate, ethanolamine oleate, oleic acid ethylenediamine or the polyglycerol ester class.
6. each described paraquat paste of claim 1～3, it is characterized in that, stabilizing agent is selected from one or more in catechol, butyl glycidyl ether, phenyl glycidyl ether, cresyl glycidyl ether, polyethylene glycol diglycidyl ether, chloropropylene oxide, sodium sorbate, Sodium Benzoate, epoxidised soybean oil, linseed oil, quinhydrones, anthraquinone, eugenol, citric acid, hydroxy benzoate or the nipasol.
7. each described paraquat paste of claim 1～3 is characterized in that, pH adjusting agent is selected from one or more in triethylamine, sodium hydroxide, ammoniacal liquor, acetic acid, citric acid or the phosphoric acid; Chelating agent is disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate or EDTAP dipotassium ethylene diamine tetraacetate; Antifreezing agent is selected from one or more in ethylene glycol, glycerine, propane diols, polyethylene glycol, sorbierite or the urea.
8. the preparation method of each described paraquat paste of claim 1～7 is characterized in that, may further comprise the steps:
(1) dispersant, thickener, stabilizing agent, PH conditioning agent, deionized water are mixed by proportioning, pH is adjusted to 5～7, is heated to 75～85 ℃, stirring and emulsifying 20～40min; Preferred mixing speed is 500～1000rpm;
(2) agricultural chemicals paraquat mother liquor is joined in the product of step (1) emulsification, dispersed with stirring is even;
(3) antifreezing agent and chelating agent are joined in step (2) product by proportioning, stir, discharging, cooling livering make paraquat paste product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105455625A CN103070173A (en) | 2012-12-14 | 2012-12-14 | Paraquat cream and its preparation technology |
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| CN2012105455625A CN103070173A (en) | 2012-12-14 | 2012-12-14 | Paraquat cream and its preparation technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430940A (en) * | 2013-08-28 | 2013-12-11 | 江苏凯元科技有限公司 | High-viscosity Avermectins thickener and preparation method thereof |
| CN103478126A (en) * | 2013-09-30 | 2014-01-01 | 南京威尔生物化学有限公司 | Efficient special auxiliary for paraquat preparation |
| CN104273130A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for producing herbicides |
| CN105944279A (en) * | 2016-05-23 | 2016-09-21 | 中国热带农业科学院环境与植物保护研究所 | Paraquat quick detoxifying liquid and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102293204A (en) * | 2011-09-26 | 2011-12-28 | 中化化工科学技术研究总院 | Paraquat water-soluble gel and preparation method thereof |
| CN102657153A (en) * | 2011-12-30 | 2012-09-12 | 广西田园生化股份有限公司 | Paraquat paste agent and preparation method thereof |
-
2012
- 2012-12-14 CN CN2012105455625A patent/CN103070173A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102293204A (en) * | 2011-09-26 | 2011-12-28 | 中化化工科学技术研究总院 | Paraquat water-soluble gel and preparation method thereof |
| CN102657153A (en) * | 2011-12-30 | 2012-09-12 | 广西田园生化股份有限公司 | Paraquat paste agent and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430940A (en) * | 2013-08-28 | 2013-12-11 | 江苏凯元科技有限公司 | High-viscosity Avermectins thickener and preparation method thereof |
| CN103478126A (en) * | 2013-09-30 | 2014-01-01 | 南京威尔生物化学有限公司 | Efficient special auxiliary for paraquat preparation |
| CN104273130A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Process for producing herbicides |
| CN105944279A (en) * | 2016-05-23 | 2016-09-21 | 中国热带农业科学院环境与植物保护研究所 | Paraquat quick detoxifying liquid and method |
| CN105944279B (en) * | 2016-05-23 | 2018-12-18 | 中国热带农业科学院环境与植物保护研究所 | A kind of paraquat rapid detoxification liquid and method |
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Application publication date: 20130501 |