CN1141023C - Grain protecting agent - Google Patents
Grain protecting agent Download PDFInfo
- Publication number
- CN1141023C CN1141023C CNB98120399XA CN98120399A CN1141023C CN 1141023 C CN1141023 C CN 1141023C CN B98120399X A CNB98120399X A CN B98120399XA CN 98120399 A CN98120399 A CN 98120399A CN 1141023 C CN1141023 C CN 1141023C
- Authority
- CN
- China
- Prior art keywords
- agent
- aqueous suspension
- protecting agent
- grain
- malathion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Manufacturing Of Micro-Capsules (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to a grain protecting agent which is composed of 1.3 to 17.5% of microcapsule water suspending agent and 83.5 to 98.7% of microparticle support, wherein the microcapsule water suspending agent contains 0.7 to 3.5% of effective component which is deltamethrin or permethrin and malathion or fenitrothion, 0.16 to 0.66% of cyst wall material which is polymethyl polyphenyl isocyanate and hexamethylene tetramine, 0.03 to 0.21% of dispersing agent, and water as the rest.
Description
The present invention relates to grain protecting agent, its preparation method and the application of microencapsulation.
With pesticide micro capsuleization, many advantages are arranged: one, can cover the penetrating odor of agricultural chemicals and make the agricultural chemicals application safety, its two, can control the rate of release of agricultural chemicals, make lasting medicine.
The method of microencapsulation is a lot, and interfacial polymerization, situ aggregation method, coacervation, phase separation method, liquid drying method, dissolving dispersion method are for example arranged.The present invention adopts and is easy to control wall thickness, is easy to industrialized interfacial polymerization.
The present invention relates to the grain protecting agent of microencapsulation; it contains the mixture as the decis of the insecticidal active ingredient of capsule core material or permethrin and malathion or sumithion; glycerine, hexa, poly-methyl polyphenylene isocyanates (PAPI), Toluene-2,4-diisocyanate as cyst material; 4-vulcabond (TDI); preferred poly-methyl polyphenylene isocyanates, hexa; dispersant such as calcium lignosulfonate, polyvinyl alcohol, preferred calcium lignosulfonate.
Specifically; the present invention relates to a kind of grain protecting agent; it is made up of the microcapsules aqueous suspension agent of 1.3-17.5% and the microgranular shape carrier of 83.5-98.7%; wherein the microcapsules aqueous suspension agent contains active ingredient decis or permethrin and malathion or the sumithion of 0.7-3.5%; poly-methyl polyphenylene isocyanates of the cyst material of 0.16-0.66% and hexa; the dispersant of 0.03-0.21%, surplus are water.The decis or the permethrin that contain 0.2-22% in the microcapsules aqueous suspension agent, the malathion of 15%-60% or sumithion, wherein the amount ratio of decis or permethrin and malathion or sumithion is 0.2-22%: 15-60%, poly-methyl polyphenylene isocyanates of 2.5-15% cyst material and hexa (1: 1-2.5) and the 1-3% calcium lignosulfonate, surplus is a water, and wherein the particle diameter of microcapsules 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 calcium lignosulfonate is added in the entry, be mixed with the aqueous solution that concentration is 1-3%, under the condition of suitably heating, 0.2-22% pressed in decis or permethrin and malathion or sumithion; The ratio of 15-60% adds and stirs, allow water-fast former medicine be scattered in the aqueous solution with particulate form, be under 60-100 ℃ the condition in water temperature, the poly-methyl polyphenylene isocyanates and the hexa that add 2.5-10% respectively, high-speed stirred was carried out polymerisation 20-40 minute, slowed down subsequently and stirred 30-60 minute, and the microcapsules aqueous suspension of formation 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 0.01-0.8%, the malathion of 0.5-3% or sumithion.
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, gelechiid etc.
The present invention makes more specific description with the following example; But these embodiment are intended to explanation and unrestricted the present invention.
Example of formulations 1
In stirred reactor, add 18.4 kg of water, be heated to 80 ℃, add 1.5 kilograms of calcium lignosulfonates then, stir, make the calcium lignosulfonate dissolving.In another container, add the mixture of 41.3 kilograms of sumithion crude oil (content 95%) and 0.82 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 about 50 ℃, add 3.5 kilograms of polymethyl benzene polyphenylene isocyanates and 4.5 kilograms of hexas respectively, and stirred 2 hours with 5000 revolutions per seconds speed, carry out polymerisation.Stop heating, stir speed (S.S.) reduces to 2000 revolutions per seconds, stirs 20 fens kinds again, makes the microcapsules aqueous suspension agent.
10 kilograms of above-mentioned microcapsules aqueous suspension agents are mixed with 123.3 kilograms of diatomite, make the pulvis of 3% microencapsulation.
Example of formulations 2
Repeat example of formulations 1, but replace 41.3 kilograms of sumithions (content 95%) with 41.3 kilograms of malathion crude oils (content 95%), the microcapsule suspensions that obtains has similar character, and viscosity is lower.
10 kilograms of the microcapsule suspensions that make are mixed with 90 kilograms of diatomite, obtain the pulvis of 4.0% microencapsulation.
Example of formulations 3
Repeat example of formulations 1, but replace 0.82 decis (content 98%) with 20.8 kilograms of permethrin crude oil (content 90%), the microcapsule suspensions that obtains has similar character, and viscosity is lower.
10 kilograms of the microcapsule suspensions that make are mixed with 183.2 kilograms of talcum powder, obtain the pulvis of 1.5% microencapsulation.
Application Example 1
The microencapsulation pulvis that makes with 150 restraint agent embodiment 1 fully mixes with 375 kilograms of paddy, and any worm alive is not found in keeping 1 year.
Application Example 2
The microencapsulation pulvis that makes with 200 restraint agent embodiment 3 fully mixes with 500 kilograms of paddy, throws in then and tries respectively 150 of worm rice weevil, corn weevil, red flour beetle, rusty grain beetle, lesser grain borers, checks after 1 year that the insect lethality is 100%.
Claims (5)
1. a grain protecting agent is characterized in that, it is made up of the microcapsules aqueous suspension of 1.3-17.5% and the microgranular shape carrier of 83.5-98.7%, and wherein the microcapsules aqueous suspension agent contains based on total weight of formulation
0.7-6.0%Active ingredient decis or permethrin and malathion or sumithion, the amount ratio of the two is 1-25.4: 50.4, poly-methyl polyphenylene isocyanates of the cyst material of 0.16-0.66% and hexa, the amount ratio of the two is 1: 1-1.29.
2. according to the grain protecting agent of claim 1, wherein, dispersant is a calcium lignosulfonate.
3. according to the grain protecting agent of claim 2, wherein, the particle diameter of described microcapsule formulations is the 10-100 micron.
4. microcapsules aqueous suspension agent, it contains active ingredient decis or permethrin and malathion or the sumithion of 15-65%, the amount ratio of the two is 1-25.4: 50.4, poly-methyl polyphenylene isocyanates of the cyst material of 2.5-15% and hexa, the amount ratio of the two is 1: 1.29.
5. according to the microcapsules aqueous suspension agent of claim 4, wherein, dispersant is a calcium lignosulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB98120399XA CN1141023C (en) | 1998-10-15 | 1998-10-15 | Grain protecting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB98120399XA CN1141023C (en) | 1998-10-15 | 1998-10-15 | Grain protecting agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1251259A CN1251259A (en) | 2000-04-26 |
| CN1141023C true CN1141023C (en) | 2004-03-10 |
Family
ID=5226722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB98120399XA Expired - Fee Related CN1141023C (en) | 1998-10-15 | 1998-10-15 | Grain protecting agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1141023C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856019A (en) * | 2010-06-04 | 2010-10-13 | 广东省粮食科学研究所 | Novel grain storage pest slow-release pesticide and preparation method thereof |
| CN102578095A (en) * | 2012-01-19 | 2012-07-18 | 华南理工大学 | Sucrose ester microcapsule pesticide and preparation method thereof |
| WO2015122460A1 (en) * | 2014-02-14 | 2015-08-20 | 日立化成株式会社 | Sugar alcohol microcapsule, slurry, and resin molded article |
-
1998
- 1998-10-15 CN CNB98120399XA patent/CN1141023C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1251259A (en) | 2000-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2046283C (en) | Single-package agricultural formulations combining immediate and time-delayed delivery | |
| PL134710B1 (en) | Method of encapsulating substances being immiscible with water | |
| AU2011265046B2 (en) | Microencapsulated oils for controlling pesticide spray drift | |
| US4244836A (en) | Process for manufacturing microcapsules of polyvinyl alcohol with liquid water-insoluble content | |
| EP0772434B1 (en) | Method of preparing natural-oil-containing emulsions and microcapsules and its uses | |
| JP2003526687A (en) | Microcapsule suspension | |
| KR100420287B1 (en) | Process for producing dry water dispersible compositions of microencapsulated pesticides and composition produced therefrom | |
| EP1623756A1 (en) | Microcapsule suspension liquid and process for production thereof | |
| KR100474644B1 (en) | Novel water-in-oil microencapsulation process and microcapsules produced thereby | |
| EP0379379B1 (en) | Particulate materials, their production and use | |
| CN103651550A (en) | Microcapsule suspending agent prepared from carbosulfan, chlorpyrifos and abamectin by compounding | |
| CN101305721B (en) | Fipronil microcapsule suspension hygienic insecticide and its preparation method | |
| CN1141023C (en) | Grain protecting agent | |
| CN101453896B (en) | Microcapsule | |
| CN101856019A (en) | Novel grain storage pest slow-release pesticide and preparation method thereof | |
| CN105076191A (en) | Efficient cyfluthrin microcapsule suspending agent and preparation method thereof | |
| NZ210780A (en) | Encapsulating water - immiscible material in polyurea capsules | |
| CN103430959A (en) | Microcapsule-suspending agent of composite chlorpyrifos and imidacloprid and preparation method thereof | |
| CN1104839C (en) | Coating for killing tardigrade | |
| CN1271929C (en) | Nimbinic microcapsule and preparation thereof | |
| CN105076202A (en) | Microcapsule suspension containing fosthiazate and beta-cyfluthrin | |
| CN110278947A (en) | A kind of novel agrochemical formulations and preparation method thereof | |
| KR20000028283A (en) | Microcapsule insecticide using biodegradable polymeric material | |
| CN110250174A (en) | A kind of oil-containing dry suspending agent dosage form and processing technology | |
| CN106577739A (en) | Contact-breaking type microcapsule and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |