CN100486437C - Avermectin microcapsule suspending agent - Google Patents
Avermectin microcapsule suspending agent Download PDFInfo
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- CN100486437C CN100486437C CNB031582907A CN03158290A CN100486437C CN 100486437 C CN100486437 C CN 100486437C CN B031582907 A CNB031582907 A CN B031582907A CN 03158290 A CN03158290 A CN 03158290A CN 100486437 C CN100486437 C CN 100486437C
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- avermectin
- suspending agent
- microcapsule suspending
- emulsifier
- avermectin microcapsule
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Abstract
A suspension of abamectin microsoftgels for preventing and eliminating the pests of vegetable, fruit tree, rice, cotton and tobacco is perpared through preparing the microsoftgels composed of abamectin as core and semi-penetrable surficial film, and using assistant to disperse the microsoftgels in water.
Description
One, technical field
The present invention relates to a kind of pesticidal preparations, exactly is a kind of biological pesticide avermectin micro-capsule suspension.
Two, background technology
Avermectin (Abamectin) is a kind of biopesticide, the biologically active of have desinsection, killing mite, be the nuisanceless green agricultural chemicals that use is recommended by the Ministry of Agriculture, can prevent and treat the various pests, particularly resistant insect of various crop such as vegetables, fruit tree, paddy rice, cotton, tobacco.The Avermectin preparation of country's registration at present mostly is conventional dosage forms such as missible oil, wetting powder.
Micro-capsule suspension (microcapsule suspensions) has another name called the capsule with diuresis promoting function suspending agent, is clear and definite one of pesticides new formulation of regulation development in China's Tenth Five-Year Plan Period agricultural chemicals industrial policy.This formulation is that active component (capsule-core) is wrapped to form the even homogeneous suspension liquid that disperses also stably to be suspended in the water of microcapsules by cyst wall, and generally between 1～20 μ m, capsule-core slowly discharges under the control of cyst wall capsule grain diameter, prevents and treats requirement to satisfy.
Through Anhui Province's Office for Scientific and Technical Information update search, the domestic disclosed 8% cypermethrin microcapsule formulations that Jiangsu red sun group company development is arranged processes by oil-soluble and water miscible cyst material and cypermethrin with interfacial polymerization; 50% malathion micro-capsule suspension of the big development of Zhejiang worker replaces synthesized polymer material with natural polymer algin-gelatin; The bacillus thuringiensis,Bt microcapsule formulations that the inferior woods of 25% parathion microcapsule formulations and Chinese forest-science academy that also has Liaoning Province's silkworm and mulberry to be developed is in addition developed.
Three, summary of the invention
The present invention also adopts interface polycondensation that the material of following component and content (percentage by weight) is processed into the avermectin microcapsule suspending agent.
Avermectin 0.3～2%
Toluene di-isocyanate(TDI) (TDI) 0.3～0.4%
Three methanol-based aminomethanes (TWX) 0.05～0.15%
Organic solvent 1～3%
Surfactant 1～2%
Emulsifier 2～4%
Xanthans 0.25～0.35%
Antifreeze, preservative 4～6%
Water surplus (promptly complementing to 100%).
Described organic solvent is arene such as benzene, toluene etc.
Described surfactant can use agricultural emulsifier, as farming breast 0201,0203 etc.
Described emulsifier is an agricultural emulsifier.
The interfacial polycondensation preparation method adds two kinds of monomer TDI and TWX in the organic solvent that is dissolved with Avermectin to stir, and then this organic facies is added in the water that contains surfactant in the reaction 2.5～3.5 hours down of 45～55 ℃ of temperature condition.Adding other auxiliary agent emulsifier, xanthans, antifreezing agent and preservative at last stirs and just obtains the avermectin microcapsule suspending agent.
The present invention wraps up the formation microencapsulation with the capsule-core Avermectin with the semipermeability cyst membrane of polyurethane-type, and stably disperses, is suspended in the water, and outward appearance is a milky homogeneous suspension liquid body.Liquid chromatography analysis active constituent content 0.3～2%, sampling, analytical method by regulations such as GB GB/T1605, GB14825, GB/T1601, GB16150 are measured, suspensibility (%) 〉=85, pH=5～7,75 μ m testing sieve screen analysises (%) 〉=98, low temperature and heat-storage stability are qualified.
This product 1.8% avermectin microcapsule suspending agent is as follows through agriculture chemical examination institution, Anhui Province and Dingyuan County, Anhui Province plant protection unit field test results:
1.8% avermectin microcapsule suspending agent has higher preventive effect to cotton bollworm, and than conventional missible oil kind is arranged the longer lasting period.60ml/667M
2Preventive effect is more than 90%, 40ml/667M
2Preventive effect is more than 85%, catches up with and surpasses triazophos emulsifiable solution and abamectin emulsifiable concentrate, and cotton growth is had no adverse effect.
1.8% avermectin microcapsule suspending agent control cabbage caterpillar effect significantly, instant effect, lasting period be long.With 15,20,25ml/667M
2Three dosage dispensers after one day preventive effect be respectively that preventive effect is respectively 87.1%, 91.0% and 96.8% after 86.7%, 91.6% and 94.6%, seven day, be higher than control group 4.5% r.
Four, embodiment
With processing 1000g avermectin microcapsule suspending agent is example, and non-limiting examples is described below:
1, gets former powder of 3.4g Avermectin (90% time together) and 0.5g monomer TWX and be dissolved in the 10g toluene, add another monomer of 3g TDI stirring then and obtained organic facies in 10～20 minutes.Getting 10g farming breast 0201 is dissolved in the 910.6g distilled water and obtains water.Above-mentioned organic facies is under agitation added 45 ℃ of aqueous phase intensifications, reaction 3 hours, and adding 10g emulsifier op-10,2.5g xanthans and 20g antifreezing agent (ethylene glycol) and 20g preservative sodium benzoate stir and promptly get 1000g 0.3% avermectin microcapsule suspending agent in reactant liquor at last.
2, get the former powder of 12g Avermectin, 1gTWX, 20g toluene, 3.5g TDI, 20g farming breast 0203,860.5g distilled water, 30g emulsifier op-10,3g xanthans, 20g ethylene glycol, 30g Sodium Benzoate, operation obtains 1000g 1% avermectin microcapsule suspending agent with embodiment 1.
3, get the former powder 1.5g of 23g Avermectin TWX, 30g toluene, 4g TDI, 15g farming breast 0201,838g distilled water, 40g emulsifier op-10,3.5g xanthans, 30g ethylene glycol, 20g Sodium Benzoate, operation obtains 1000g 2% avermectin microcapsule suspending agent with embodiment 1.
4, get the former powder of 20g Avermectin, 1g TWX, 20g toluene, 3.6g TDI, 10g farming breast 0201,862.4g distilled water, 30g emulsifier op-10,3g xanthans, 25g ethylene glycol, 25g Sodium Benzoate, operation obtains 1000g 1.8% avermectin microcapsule suspending agent with embodiment 1.
Claims (1)
1, a kind of avermectin microcapsule suspending agent is the micro-capsule suspension that each component by following weight percentage processes through interfacial polycondensation:
Avermectin 0.3～2%
Toluene di-isocyanate(TDI) 0.3～0.4%
Three methanol-based aminomethanes 0.05～0.15%
Organic solvent 1～3%
Farming breast 0201 or 0,203 1～2%
Emulsifier op-10 2～4%
Xanthans 0.25～0.35%
Antifreeze, preservative 4～6%
Water surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031582907A CN100486437C (en) | 2003-09-23 | 2003-09-23 | Avermectin microcapsule suspending agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031582907A CN100486437C (en) | 2003-09-23 | 2003-09-23 | Avermectin microcapsule suspending agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1600101A CN1600101A (en) | 2005-03-30 |
| CN100486437C true CN100486437C (en) | 2009-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB031582907A Expired - Fee Related CN100486437C (en) | 2003-09-23 | 2003-09-23 | Avermectin microcapsule suspending agent |
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| CN (1) | CN100486437C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11382330B2 (en) | 2017-12-25 | 2022-07-12 | Dow Global Technologies Llc | Micro-encapsulation of an insecticide |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100566567C (en) * | 2006-05-19 | 2009-12-09 | 东北农业大学 | The preparation of nimoctin, moxidectin aqueous emulsion, microemulsion, suspending agent |
| CN102106345A (en) * | 2009-12-28 | 2011-06-29 | 联合国南通农药剂型开发中心 | Avermectin microcapsule suspending agent and preparation method thereof |
| CN102067863A (en) * | 2011-01-06 | 2011-05-25 | 北京燕化永乐农药有限公司 | Pesticide composition for preventing underground insects in peanut field |
| CN102027904A (en) * | 2011-01-06 | 2011-04-27 | 北京燕化永乐农药有限公司 | Spinosad microcapsule suspending agent |
| CN102630686A (en) * | 2012-04-11 | 2012-08-15 | 苏州佳辉化工有限公司 | Microcapsule suspension concentrate containing triallate and preparation method thereof |
| CN107568218A (en) * | 2017-08-08 | 2018-01-12 | 河北兴柏农业科技有限公司 | A kind of Avermectin B2 micro-capsule suspension and preparation method thereof |
| CN113016815A (en) * | 2021-02-23 | 2021-06-25 | 沈阳化工大学 | Abamectin B2 microcapsule suspending agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851227A (en) * | 1986-07-31 | 1989-07-25 | Ben-Gurion University Of The Negev Research & Development Authority | Insecticidal composition comprising diazinon and process for the preparation thereof |
| CN1063017A (en) * | 1992-02-17 | 1992-07-29 | 南京林业大学 | Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva |
| CN1418126A (en) * | 2000-03-17 | 2003-05-14 | 拜尔公司 | Microcapsule suspensions |
-
2003
- 2003-09-23 CN CNB031582907A patent/CN100486437C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851227A (en) * | 1986-07-31 | 1989-07-25 | Ben-Gurion University Of The Negev Research & Development Authority | Insecticidal composition comprising diazinon and process for the preparation thereof |
| CN1063017A (en) * | 1992-02-17 | 1992-07-29 | 南京林业大学 | Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva |
| CN1418126A (en) * | 2000-03-17 | 2003-05-14 | 拜尔公司 | Microcapsule suspensions |
Non-Patent Citations (2)
| Title |
|---|
| 制备脲醛树脂阿维菌素微胶囊的研究. 付仁春，周菁，袁青梅，郑保忠.云南化工，第30卷第4期. 2003 * |
| 微胶囊技术在农药剂型中的应用. 高德霖.现代化工，第20卷第2期. 2000 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11382330B2 (en) | 2017-12-25 | 2022-07-12 | Dow Global Technologies Llc | Micro-encapsulation of an insecticide |
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| Publication number | Publication date |
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| CN1600101A (en) | 2005-03-30 |
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Granted publication date: 20090513 Termination date: 20130923 |