CN101856019A - Novel grain storage pest slow-release pesticide and preparation method thereof - Google Patents
Novel grain storage pest slow-release pesticide and preparation method thereof Download PDFInfo
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- CN101856019A CN101856019A CN201010195420A CN201010195420A CN101856019A CN 101856019 A CN101856019 A CN 101856019A CN 201010195420 A CN201010195420 A CN 201010195420A CN 201010195420 A CN201010195420 A CN 201010195420A CN 101856019 A CN101856019 A CN 101856019A
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- microencapsulation
- grain storage
- methyl
- release pesticide
- aqueous suspension
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Abstract
The invention relates to a grain protective agent. The grain protective agent consists of 0.2 to 7.5 percent of microcapsule water suspending agent and 92.5 to 99.8 percent of microparticle carrier, wherein the microcapsule water suspending agent comprises 0.1 to 3.8 percent of active ingredients, such as deltamethrin or permethrin and chlorpyrifos-methyl or pirimiphos-methyl, 0.12 to 0.43 percent of microcapsule wall material, such as isocyanate-polymethyl-polyphenyl and hexamine, 0.05 to 0.32 percent of dispersing agent, and the balance of water.
Description
Technical field the invention belongs to the application of microencapsulation agricultural chemicals in the foodstuff preservation field, belongs to a kind of chemical control slow-release pesticide.
The method of background technology microencapsulation is a lot, for example has, and interfacial polymerization, situ aggregation method, coacervation, phase separation method, liquid drying method, dissolving disperse cooling method.The present invention adopts and is easy to control wall thickness, is easy to industrialized interfacial polymerization.Microencapsulation technology is to adopt macromolecular material that pharmaceutical pack is wrapped, and forms microcapsules, and medicine is by macromolecular material intermolecular gap infiltration, discharge lentamente, act on the dispenser object target around.This technology both can alleviate medicine directly to the harm and the environmental pollution of human body; the efficacy of a drug be can also concentrate, drug effect and attenuating expense prolonged; since this technology is come out; be widely used in fields such as medicine, health, chemical industry and control of agricultural pest, but relative just seldom as the application of grain protectant aspect.With pesticide micro capsuleization, many advantages are arranged: one, can cover the penetrating odor of agricultural chemicals and make the about application safety of farming, its two, can control the rate of release of agricultural chemicals, make lasting medicine.
Summary of the invention the present invention relates to the novel grain storage pest slow-release pesticide of microencapsulation, it contains the mixture as the insecticidal active ingredient decis of capsule core material or permethrin and chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus, as cyst material glycerine, poly-methyl polyphenylene isocyanates, hexa, toluene 2, the 4-vulcabond, preferred poly-methyl polyphenylene isocyanates, hexa, dispersant such as sodium lignin sulfonate, polyvinyl alcohol, preferred sodium lignin sulfonate.
Specifically, the present invention relates to the novel grain storage pest slow-release pesticide of microencapsulation, it is made up of the microcapsules aqueous suspension agent of 0.2-7.5% and the microgranular shape carrier of 92.5-99.8%, wherein the microcapsules aqueous suspension agent contains active ingredient decis or permethrin and chlorpyrifos-methyl or the methylpyrimidine sulphur phosphorus of 0.1-3.8%, poly-methyl polyphenylene isocyanates of the cyst material of 0.12-0.43% and hexa, the dispersant of 0.05-0.32%, surplus are water.The microcapsules aqueous suspension agent contains active ingredient decis or the permethrin of 0.3-18%, 9.7-45% chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus, wherein the amount ratio of decis or permethrin and chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus is 0.3-18%: 9.7-45%, poly-methyl polyphenylene isocyanates of the cyst material of 1.5-18% and hexa (1: 1-2.5) and the sodium lignin sulfonate of 1-5%, surplus is a water, and wherein said microcapsule formulations particle diameter is the 10-100 micron.
The invention still further relates to the preparation method of the grain protecting agent of microencapsulation.
Specifically; the grain protecting agent of microencapsulation of the present invention is prepared as follows: earlier the dispersant sodium lignin sulfonate is added in the entry; be mixed with the aqueous solution of concentration 3%; under suitable heating condition; decis or permethrin and chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus are added in the ratio of 0.3-18%: 9.7-45% and stir; allow water-fast former medicine be scattered in the aqueous solution with particulate form; under water temperature 50-100 ℃ condition; the poly-methyl polyphenylene isocyanates of cyst material and the hexa that add 1.5-18% respectively; high-speed stirred was carried out polymerisation 20-40 minute; slow down subsequently and stirred 30-60 minute; forming the microcapsules aqueous suspension agent joins in filler diatomite or the talcum powder; stir and blend together pulvis; the pulvis of microencapsulation; the decis or the permethrin that wherein contain 0.02-0.8%, 0.08-3% chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus.
Microcapsule formulations of the present invention can be used to prevent and treat various insects, and the insect of the offense of damage to corn trees and vegetable products that runs in storing of grain particularly is as rice weevil, corn weevil, lesser grain borer, the red flat angle robber of rust, red flour beetle etc.
The present invention makes more specific description with following example: but these examples are intended to explanation and unrestricted the present invention.
Example of formulations 1
In stirred reactor, add 25.2 kg of water, be heated to 70 ℃, add 1.5 kilograms of sodium lignin sulfonates then, stir, make the sodium lignin sulfonate dissolving.In another container, add the mixture of 38.5 kilograms of methylpyrimidine sulphur phosphorus crude oil (content 90%) and 0.58 kilogram of former powder of decis (content 98%), stir.And then join in the above-mentioned stirred reactor, stirring, it is microgranular that mixture is in a liquid state.When water temperature rises to 50 ℃, add 2.5 kilograms of poly-methyl polyphenylene isocyanates and 5.5 kilograms of hexas respectively, and when stirring 25 minutes, carry out polymerisation with 5000 revolutions per seconds speed.Stop heating, stir speed (S.S.) reduces to 2000 revolutions per seconds, stirs 40 minutes again, makes the microcapsules aqueous suspension agent.
10 kilograms of above-mentioned microcapsules aqueous suspension agents are mixed with 126.4 kilograms of diatomite, make the pulvis of 3.5% microencapsulation.
Example of formulations 2
Repeat example of formulations 1, but replace 38.5 kilograms of methylpyrimidine sulphur phosphorus crude oil (content 90%) with 38.5 kilograms of chlorpyrifos-methyl crude oil (content 90%), the microcapsules water slurry that obtains has similar character.
10 kilograms of above-mentioned microcapsules aqueous suspension agents are mixed with 109.3 kilograms of diatomite, make the pulvis of 4% microencapsulation.
Example of formulations 3
Repeat example of formulations 1, but replace 0.58 kilogram of former powder of decis (content 98%) with 17.9 kilograms of permethrin crude oil (content 90%), the microcapsules water slurry that obtains has similar character, and viscosity is lower.
10 kilograms of microcapsules aqueous suspension agents are mixed with 136.63 kilograms of talcum powder, make the pulvis of 3.8% microencapsulation.
Application Example 1
180 pulvis of restraining the microencapsulation that agent embodiment 1 make are fully mixed with 500 kilograms of paddy, 1 year certainly, do not find any worm alive.
Application Example 2
250 pulvis of restraining the microencapsulation that agent embodiment 3 make are fully mixed with 500 kilograms of paddy, throw in then that rice weevil, corn weevil, red flour beetle, the red flat angle of rust are stolen, each 250 of lesser grain borers, inspection after 1 year, the insect lethality is 100%.
Claims (5)
1. the present invention relates to the novel grain storage pest slow-release pesticide of microencapsulation, it is characterized in that, it is made up of the microcapsules aqueous suspension agent of 0.2-7.5% and the microgranular shape carrier of 92.5-99.8%, wherein the microcapsules aqueous suspension agent contains active ingredient decis or permethrin and chlorpyrifos-methyl or the methylpyrimidine sulphur phosphorus of 0.1-3.8%, poly-methyl polyphenylene isocyanates of the cyst material of 0.12-0.43% and hexa, the dispersant of 0.05-0.32%, surplus are water.
2. according to the novel grain storage pest slow-release pesticide of the microencapsulation of claim 1, wherein the decis of microcapsules aqueous suspension agent or permethrin and chlorpyrifos-methyl or methylpyrimidine sulphur phosphorus amount ratio are 0.3-18%: 9.7-45%.
3. according to the novel grain storage pest slow-release pesticide of the microencapsulation of claim 1, wherein poly-methyl polyphenylene isocyanates of the cyst material of microcapsules aqueous suspension agent and hexa amount ratio are 1: 1-2.5.
4. according to the novel grain storage pest slow-release pesticide of the microencapsulation of claim 1, wherein the dispersant of microcapsules aqueous suspension agent is a sodium lignin sulfonate.
5. according to the novel grain storage pest slow-release pesticide of the microencapsulation of claim 1, wherein microgranular shape carrier is diatomite or talcum powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010195420A CN101856019A (en) | 2010-06-04 | 2010-06-04 | Novel grain storage pest slow-release pesticide and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010195420A CN101856019A (en) | 2010-06-04 | 2010-06-04 | Novel grain storage pest slow-release pesticide and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN101856019A true CN101856019A (en) | 2010-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201010195420A Pending CN101856019A (en) | 2010-06-04 | 2010-06-04 | Novel grain storage pest slow-release pesticide and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657160A (en) * | 2012-05-10 | 2012-09-12 | 湖南化工研究院 | Insecticide pirimiphos-methyl microcapsule suspension and preparation method |
| CN105028465A (en) * | 2015-08-18 | 2015-11-11 | 湖南海利化工股份有限公司 | Composition for killing sanitary insect pests |
| CN105980511A (en) * | 2014-02-14 | 2016-09-28 | 日立化成株式会社 | Screen frame configuration and screen device |
| CN109820002A (en) * | 2019-03-21 | 2019-05-31 | 广西师范大学 | It is a kind of for controlling the insecticide composition of grain storage pest population |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997018705A2 (en) * | 1995-11-17 | 1997-05-29 | Schering-Plough Animal Health Corporation | Dry formulations of pesticides for controlling ectoparasites on animals |
| CN1173145A (en) * | 1995-01-19 | 1998-02-11 | 唐艾兰科公司 | Microencapsulation process and product |
| CN1251259A (en) * | 1998-10-15 | 2000-04-26 | 广东省粮食科学研究所 | Grain protecting agent |
| CN1957710A (en) * | 2006-10-27 | 2007-05-09 | 陕西上格之路生物科学有限公司 | Composition of insecticide containing chlorpyrifos |
| CN101427687A (en) * | 2007-11-08 | 2009-05-13 | 联合国南通农药剂型开发中心 | High-content chlorpyrifos microcapsule suspension agent and production method |
-
2010
- 2010-06-04 CN CN201010195420A patent/CN101856019A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173145A (en) * | 1995-01-19 | 1998-02-11 | 唐艾兰科公司 | Microencapsulation process and product |
| WO1997018705A2 (en) * | 1995-11-17 | 1997-05-29 | Schering-Plough Animal Health Corporation | Dry formulations of pesticides for controlling ectoparasites on animals |
| CN1251259A (en) * | 1998-10-15 | 2000-04-26 | 广东省粮食科学研究所 | Grain protecting agent |
| CN1957710A (en) * | 2006-10-27 | 2007-05-09 | 陕西上格之路生物科学有限公司 | Composition of insecticide containing chlorpyrifos |
| CN101427687A (en) * | 2007-11-08 | 2009-05-13 | 联合国南通农药剂型开发中心 | High-content chlorpyrifos microcapsule suspension agent and production method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657160A (en) * | 2012-05-10 | 2012-09-12 | 湖南化工研究院 | Insecticide pirimiphos-methyl microcapsule suspension and preparation method |
| CN105980511A (en) * | 2014-02-14 | 2016-09-28 | 日立化成株式会社 | Screen frame configuration and screen device |
| CN105028465A (en) * | 2015-08-18 | 2015-11-11 | 湖南海利化工股份有限公司 | Composition for killing sanitary insect pests |
| CN109820002A (en) * | 2019-03-21 | 2019-05-31 | 广西师范大学 | It is a kind of for controlling the insecticide composition of grain storage pest population |
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Application publication date: 20101013 |