CN102524285A - Thiacloprid microcapsule suspending agent - Google Patents
Thiacloprid microcapsule suspending agent Download PDFInfo
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- CN102524285A CN102524285A CN2010106122061A CN201010612206A CN102524285A CN 102524285 A CN102524285 A CN 102524285A CN 2010106122061 A CN2010106122061 A CN 2010106122061A CN 201010612206 A CN201010612206 A CN 201010612206A CN 102524285 A CN102524285 A CN 102524285A
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- thiophene worm
- worm quinoline
- agent
- thiacloprid
- micro
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Abstract
The invention relates to a thiacloprid microcapsule suspending agent. A method for preparing the thiacloprid microcapsule suspending agent comprises the following steps of: processing thiacloprid microcapsules by taking urea-formaldehyde resin as capsule skin, thiacloprid as a capsule core material, cyclohexanone and methanol as organic solvents, ammonium chloride as an acidic catalyst and an emulsifying agent 0201B as an efficient surfactant, wherein the encapsulating rate of the thiacloprid microcapsules is over 97 percent, and the grain diameters are between 50 and 100 micrometers; adding aids such as a dispersing agent, a wetting agent, the emulsifying agent, an antifreezing agent, a thickening agent, a defoaming agent and the like, shearing by a high-shear emulsifying agent, and sanding by a sand mill to obtain the microcapsule suspending agent. The thiacloprid microcapsule suspending agent has high insecticidal quick-acting performance (which has a special effect on coleoptera pests such as long-horned beetles and the like), is wide in insecticidal spectra and safe to human, livestock, natural enemies of the pests and other beneficial organisms and avoids the pollution of a large quantity of organic solvents to the environment, and the lasting period is about 50 days; and the thiacloprid microcapsule suspending agent has a simple preparation process, is low in cost and is suitable to be popularized and applied on a large area.
Description
One, invention and created name
Thiophene worm quinoline micro-capsule suspension is to be the capsule skin with the pollopas; Thiophene worm quinoline is a core materials, and cyclohexanone and methyl alcohol are organic solvent, and ammonium chloride is acidic catalyst; Emulsifier 0201B is an efficient surfactant; Processing thiophene worm quinoline microcapsule formulations, the thiophene worm quinoline microcapsule formulations envelop rate that obtains be more than 97%, particle diameter 50-100um; And then add auxiliary agents such as dispersant, wetting agent, emulsifier, antifreeze, thickener, antifoaming agent, and shear through the high-shear emulsifying agent, obtain micro-capsule suspension behind the sand mill sand milling.The innovation of present technique is thiophene worm quinoline is processed into stable suspending agent, and is used for the control of pine nematode.
Two, background technology
Pine nematode is the dangerous forest disease and pest of in the world tool, and host plant infects pine wood nematode can be dead after 40 days after being ill.Therefore, be called as pine tree " cancer ".Again because of its spread speed is exceedingly fast, and in case infection is difficult to control, so claim pine tree " AIDS " again.Its harm that causes is destructive.The control of this disease has become global problem, causes the great attention of countries in the world.Many countries classify this disease as the import and export quarantine object.
China's area of woods reaches 1.75 hundred million hectares.According to forest department's statistics, the whole nation has more than 500,000,000 mu of pine forest to meet with the erosion of pine wood nematode, and the direct economic loss that causes every year reaches 2,500,000,000 yuan, and indirect loss reaches 25,000,000,000 yuan.Zhejiang Province is that the most serious province takes place national pine nematode, area takes place the half the of the gross area takes place the whole nation nearly.By in October, 2002; The lesion has related to the whole province 18 counties (city, district); 8.0 hundred million yuan of direct economic losses have been invaded holy place of Buddhism Mount Putuo and well-known scenic area, the West Lake at present, and national scenic spot such as Thousand-Island Lake, the Tian Mu Shan Mountain, Xi Kou, Wild Goose and Reed Marsh Mountains are constituted a serious threat.In pine nematode emphasis generating region, the part forest land deteriorates to the deserted mountain because of pine nematode endangers continuously.
At present, this disease is not effectively controlled, and with regard to the whole nation, no matter this disease is that local area or entire scope all are the gesture that expansion spreads, and is still constantly spreading to whole middle and southern large tracts of land pine forest new epidemic place.Last year, epidemic situation fed through to the ground such as Xingzi County of underfooting, Mount Lushan, Jiangxi; Situation is very severe; Is world's natural culture legacy of main view to China with pinaceae plant, constitutes a serious threat like the ecological safety in famous mountains, the world such as Mount Huang, Zhangjiajie, Mount Lushan, has caused the great attention of country.
Pine tree is industrial or agricultural with material, the masses main source with material.Because the frequent generation of forest disease and pest, the pine tree that catches an illness can not be used, and the influence foreign exchange earning is seriously restricting the performance of forest resources function.It is thus clear that pine nematode has not only destroyed the forest resources and ecotope, and hindered the sound development of national economy with society.
The control of pine wood nematode is a global problem.Because pine wood nematode survives in the trunk; Medicine is difficult to directly act on polypide; The method of generally acknowledging in the world at present is the vector insect to pine wood nematode---Monochamus alternatus Hope carries out prevention and control, and (Monochamus alternatus Hope can be propagated pine wood nematode very effectively; Average 15000 of every longicorn portability pine wood nematode), to cut off the route of transmission of pine wood nematode.But worldwide also do not produce a kind of economy, effective ideal product of environmental protection again so far.China mainly is to adopt chemical agent to the method for preventing and treating of pine wood nematode, sprays chemical pesticide because of large tracts of land and causes the enhancing of disease worm pesticide resistance, contaminated environment, destruction ecology, killed natural enemies to form vicious circle.Human to the consideration of sustainable development and to the care of its own existence environment, much more more and more in insect is administered, require to take with the biological control is the integrated management principle of leading.World developed country comprises that some developing countries are all in the development that steps up forestry PCO Study on Technology and biopesticide.
Thiophene worm quinoline is novel chloro nicotine compound, acts on the nicotinic acid acetylcholinergic receptor of insect, have stronger tag, stomach toxicity and systemic action, be one of efficient medicament of control pierce-suck type and pests with chewing mouthparts.The former medicine of thiophene worm quinoline was developed cooperatively by Japanese Bayer farmingization company and Bayer farmingization company the nineties in last century.Japan once was the most serious country of pine nematode harm, and in recent years, Japan promotes the use of thiophene worm quinoline control Monochamus alternatus Hope, and control efficiency is very good, makes pine nematode obtain effective control in Japan, the withered loss rate of pine tree dropped to ten thousand/.
Gloomy anti-master station of country will have promoted mainly thiophene worm quinoline preparation aspect the control pine nematode since the end of the year 2008, mainly there are following characteristics in former medicine of thiophene worm quinoline and preparation:
(1) desinsection is quick-acting, and the power of knocking down is strong: thiophene worm quinoline desinsection is quick-acting, and the power of knocking down is strong.Thiophene worm quinoline acts on the neural caudacoria that engages of insect, through combine the neural normal conduction of interference insect with the nicotinic acid acetylcholinergic receptor; Cause the obstruction of neural channel, cause a large amount of accumulation of acetylcholine, thereby make the insect exaltation; The whole body spasm, paralysis and dead.The Monochamus alternatus Hope and other the multiple longicorns that are difficult to prevent and treat for general insecticide; Has killing effect fast; Can make coleopteron such as longicorn in 10min, lose ability to act, can effectively cut off the main communication media of pine wood nematode, suppress the generation of pine nematode.Test shows that thiophene worm quinoline is fairly obvious to the effect of tagging of Monochamus alternatus Hope, and 2 hours longicorns begin mortality after the dispenser, and the control efficiency after 24 hours can reach more than 90%.
(2) insecticidal spectrum is wide
Thiophene worm quinoline insecticidal spectrum is very wide, and a lot of insects of coleoptera, Lepidoptera, Semiptera, Homoptera and orthoptera are all had good control efficiency, can be widely used in multiple forestry and agricultural insect management.In the control Monochamus alternatus Hope; To simultaneous other longicorns, Chinese chestnut beta pruning resemble, hylobitelus xiaoi zhang, flatheaded borer, colorado potato beetle, black cutworm, white line dart moth of turnip, peanut grub, chafer, bright strong different stinkbug, poplar caterpillar, fall webworm, Yang Xiaozhou moth, Closteraanastomosis L., tent caterpillar, dendrolimus punctatus, Parocneria orienta Chao, oriental moth,, bag moth, two spotted spider mite, bamboo locust, grassland caterpillar, grassland grasshopper, aphid, tea geometrid, tea lesser leafhopper etc.; Also can play preventive and therapeutic effect simultaneously; Need not dispenser separately; Can receive " medicine is prevented many worms " double effect of controlling, reduce and repeated to prevent and treat cost.
(3) no cross resistance
Organic phosphates, carbamates act on the acetylcholinesterase of insect, and pyrethroid acts on neural axon, influence the sodium-ion channel in the insect nerve cell.Because action site is different with the mechanism of action, thiophene worm quinoline and common insecticides do not have cross resistance, thereby can be used for resistance management, are widely used in those have produced the forestry pest of resistance to organic phosphates, carbamates, cinerins control.
(4) half life period weak point, safety and environmental protection
Thiophene worm quinoline low toxicity, environmental protection, very little to external environment influence, have the following advantages:
1. to people, animal safety.Thiophene worm quinoline has very high insecticidal activity to Monochamus alternatus Hope, but its toxicity is extremely low, and people and animals are had very high safety, and medicament is destitute of smell or excitant, to dispenser operating personnel and applying area resident safety.
2. environmentally safe.Because the steam of its active ingredient forces down, thiophene worm quinoline can contaminated air.Because the half life period is short, after getting into soil and water body, the residual matter of thiophene worm quinoline also can decompose fast, and very little to the influence that environment causes.
3. to aquatile safety.Thiophene worm quinoline is also very low to fish and other hydrobiological toxicity, generally to aquatile not influence basically.
4. to natural enemies security.Thiophene worm quinoline is very little, particularly very safe to honeybee and birds to the natural enemy influence, also can use trees and flowering phase of crop.
Thiophene worm quinoline micro-capsule suspension characteristics:
(1) microcapsules controlled-release technology, the lasting period is long: the control slow release method is the state-of-the-art in the world at present formulations of pesticide, also is the developing direction that following international agricultural chemicals uses; We with thiophene worm quinoline as control medicament, then with its microencapsulation, thiophene worm quinoline microcapsule formulation; Though on usability, have solid features; But microcapsules inside or liquid can make microcapsules rupture under given conditions, cause core to discharge.We select suitable capsule casing material, and the hierarchical structure of the thickness through regulating softgel shell, hardness, softgel shell and the size of capsule are controlled the rate of release of core material.The application of microcapsules slow release method has prolonged lasting period of thiophene worm quinoline preparation greatly, the control that makes longicorn in its long emergence period, can obtain continuing, thus reduced spraying times and dosage, practiced thrift the control cost.The data of the woodland test of pesticide effectiveness show that the lasting period of thiophene worm quinoline micro-capsule suspension can reach more than 60 days.
(2) safety, environmental protection: our capsule casing material that adopts is natural degradable in process of production, and is nontoxic to external environment condition, though used a small amount of organic solvent; But because the rate of wrapping can reach more than 92%; Free fraction is few, and therefore, this part is very limited to the environmental influence of outside.
(3) resistance of rainwater washing against: the fineness of thiophene worm quinoline micro-capsule suspension can reach about 10um, and adhesiveness is good on blade and branch, and resistance of rainwater washing against has been saved dosage, indirect reduction drug cost.
(4) cost performance is high: because the control of thiophene worm quinoline micro-capsule suspension spectrum is very wide, a dispenser can solve the harm of various pests, has saved the cost and the time of repeated drug taking greatly, compares with agricultural chemicals generic on the market, and cost performance is more outstanding.
Show that through large-area experiment and demonstration result thiophene worm quinoline micro-capsule suspension is remarkable to the control efficiency of Monochamus alternatus Hope adult, can be used for the control of large-area pine nematode.
Three, innovation and creation purpose
Agricultural chemicals is to the actual harm of environment, and is not only relevant with former medicine, also relevant with the formulation of agricultural chemicals.Maximum to the harm of environment in the present employed formulations of pesticide with missible oil; And micro-capsule suspension has only used a spot of organic solvent in process of production; The overwhelming majority is a water, and a dispenser can be held effect about 50 days, reduction spraying times; Alleviated environmental pressure, so micro-capsule suspension is one of formulation of the environmental protection of agricultural chemicals.
At present; The control of pine nematode does not have special effect agent; And general medicament can not effectively to solve the longicorn emergence period long, extremely irregular problem of sprouting wings, the problem of succeeding in developing this two aspect of good solution of thiophene worm quinoline micro-capsule suspension; Therefore, this product has wide prospect aspect the preventing and treating of pine nematode.
Four, technical scheme and invention effect, advantage
Proposition of the present invention is to fill up the control blind spot that domestic and international existing insecticide can not effectively be prevented and treated the communication media Monochamus alternatus Hope of pine wood nematode, prepares simultaneously a kind ofly can reach broad spectrum activity, safety, efficient, special effect agent that the lasting period is long.
Technical scheme of the present invention is: thiophene worm quinoline micro-capsule suspension is to be the capsule skin with the pollopas; Thiophene worm quinoline is a core materials, and cyclohexanone and methyl alcohol are organic solvent, and ammonium chloride is acidic catalyst; Emulsifier 0201B is an efficient surfactant; Processing thiophene worm quinoline microcapsule formulations, the thiophene worm quinoline microcapsule formulations envelop rate that obtains be more than 97%, particle diameter 50-100um; And then add auxiliary agents such as dispersant, wetting agent, emulsifier, antifreeze, thickener, antifoaming agent, and shear through the high-shear emulsifying agent, obtain micro-capsule suspension behind the sand mill sand milling.
The basic mechanical design feature of this invention:
1, the lasting period is long: the control lasting period at woodland can reach more than 50 days.
2, insecticidal spectrum is wide: various longicorns and other coleopteran pests all there are good effect, and double other Lepidoptera, Semiptera, the orthoptera pest controlled.
3, desinsection is quick-acting: thiophene worm quinoline takes effect in 10 minutes to insects such as longicorns.
4, stable performance: be fit to the commerciality storage, and keep its performance more than 2 years.
5, can be used alternatingly with other medicament.
6, the killing rate to longicorn reaches more than 90%.
7, to predation and parasite, people, animal safety.
8, all noresidues in waters, soil, air, environmentally safe does not have poisoning to crop, to fish, honeybee and other aquatic animal safety.
9, this medicament can be used for the aircraft ultra low volume spraying, also can be used for the conventional spraying of engine-driven atomiser.
Description of drawings: accompanying drawing is thiophene worm quinoline micro-capsule suspension research and development process charts.
Claims (6)
1. to be to adopt third generation anabasine insecticide thiophene worm quinoline be primary raw material to thiophene worm quinoline micro-capsule suspension principal character, and thiophene worm quinoline has characteristics such as desinsection is quick-acting, insecticidal spectrum wide, safety and environmental protection.Thiophene worm quinoline is not only nontoxic to vertebrates such as people, animal, and very friendly to environment, and contaminated air, water source do not kill and wound beneficial organisms such as honeybee, birds, fish, shrimp yet.It is very strong that thiophene worm quinoline is knocked down power to coleopteran pest, and the pine wood nematode communication media Monochamus alternatus Hope adult that particularly is difficult to prevent and treat for a lot of insecticides has very desirable killing effect.
2. thiophene worm quinoline micro-capsule suspension according to claim 1; Its characteristic is the capsule skin with the Lauxite, between the about 0.50-0.63 of the mol ratio of urea and formaldehyde, is capsule heartwood material with thiophene worm quinoline; Solvent then is DMF and methyl alcohol, and efficient surfactant is emulsifier T-60.
3. thiophene worm quinoline micro-capsule suspension according to claim 1; It is characterized in that earlier synthetic thiophene worm quinoline microcapsules in the production process; Be processed into suspending agent then, be processed in the process of suspending agent and will add dispersant, emulsifier, antifreeze, thickener, antifoaming agent.
4. thiophene worm quinoline micro-capsule suspension according to claim 1, the content that it is characterized in that " thiophene worm quinoline " is 2-6% (weight ratio).
5. thiophene worm quinoline micro-capsule suspension according to claim 1 is characterized in that outward appearance is a milky milk shape liquid;
6. thiophene worm quinoline micro-capsule suspension according to claim 5 it is characterized in that discontinuous phase is thiophene worm quinoline microcapsules, and continuous phase is water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106122061A CN102524285A (en) | 2010-12-20 | 2010-12-20 | Thiacloprid microcapsule suspending agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106122061A CN102524285A (en) | 2010-12-20 | 2010-12-20 | Thiacloprid microcapsule suspending agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103125322A (en) * | 2013-03-20 | 2013-06-05 | 遵义市林业科学研究所 | Pesticide application method for handling monochamus alternatus in bursaphelench xylophilus diseased wood |
| CN105104395A (en) * | 2015-09-08 | 2015-12-02 | 利民化工股份有限公司 | 90% mancozeb microcapsule and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743960A (en) * | 2010-02-01 | 2010-06-23 | 吴学民 | Thiacloprid microcapsule powder agent, suspending agent and preparation method and application thereof |
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2010
- 2010-12-20 CN CN2010106122061A patent/CN102524285A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743960A (en) * | 2010-02-01 | 2010-06-23 | 吴学民 | Thiacloprid microcapsule powder agent, suspending agent and preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103125322A (en) * | 2013-03-20 | 2013-06-05 | 遵义市林业科学研究所 | Pesticide application method for handling monochamus alternatus in bursaphelench xylophilus diseased wood |
| CN105104395A (en) * | 2015-09-08 | 2015-12-02 | 利民化工股份有限公司 | 90% mancozeb microcapsule and preparation method thereof |
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Application publication date: 20120704 |