CN1063017A - Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva - Google Patents
Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva Download PDFInfo
- Publication number
- CN1063017A CN1063017A CN 92107292 CN92107292A CN1063017A CN 1063017 A CN1063017 A CN 1063017A CN 92107292 CN92107292 CN 92107292 CN 92107292 A CN92107292 A CN 92107292A CN 1063017 A CN1063017 A CN 1063017A
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- China
- Prior art keywords
- sumithion
- crude oil
- glycerine
- tdi
- agricultural chemicals
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Abstract
A kind of is prescription and the method that raw material is made sumithion microencapsulation of pesticide preparation with sumithion agricultural chemicals crude oil, it is characterized in that a certain amount of sumithion crude oil and the miscible back of a certain amount of toluene di-isocyanate(TDI) are added in the polyvinyl alcohol water solution that is stirring, add quantitative glycerine after making sumithion agricultural chemicals crude oil form particulate, continue to stir, toluene di-isocyanate(TDI) and glycerine are fully acted on, can form variable concentrations, be capsule-core with sumithion agricultural chemicals crude oil, toluene di-isocyanate(TDI) and glycerine polyester are the sumithion microcapsules aqueous suspension Pesticidal products of capsule skin.
Description
The invention belongs to the pesticidal preparations technology in the agricultural chemicals manufacturing.
Effective release of active substance makes liquid pesticidal become solid pharmaceutical preparation in the control with controlled release microcapsule agricultural chemicals controlled agricultural chemicals, reduces toxicity of pesticide, covers the agricultural chemicals smell, prolongs drug effect, reduces the loss.External commercial pesticide micro capsule preparation variety has methyl, ethyl parathion, permethrin, diazinon (Pennwalt company); Juvenile hormone covers king-king (Zoecon company); The synergy pyrethrins, chlormequat (3M company); Dyfonate (Stauffer Chemical Co); Warfarin (WARF Inst) etc.Its preparation manufacture method requires to have nothing in common with each other according to the chemical property of main ingredient composition and to the degraded of encapsulate.
CN 85102011: " carrying out the high concentration encapsulation process with interface polycondensation " discloses a kind of method that constitutes small-sized or microencapsulation as films such as polyamide, polysulfonamide, polyester, Merlon or polyurethane that adopts;
CN 1045524: " coating material that is used for the control drug release of durative action preparation " then discloses the microcapsules coating material that constitutes with two kinds of copolymers, and they are respectively:
1. mol ratio is the copolymer of 1: 2: 0.1 ethyl acrylate, methyl methacrylate and chlorination trimethylammonium EMA;
2. mol ratio is methacrylic acid and the ester and the methacrylic acid copolymer of 1: 1 or 2: 1;
CN 1043442: " method for preparing a kind of new microcapsules " also discloses the preparation method of a kind of dye microcapsule and antigen microcapsules;
China Henan Province Anyang Forest Chemicals Factory then with interfacial polymerization, be that raw material is produced 25% ethyl parathion microcapsule product with poly-methyl polyphenylene isocyanates (PAPI) and sodium lignin sulfonate etc.
The goal of the invention of this method is that the method low with a kind of cost, that material source is wide, manufacturing process is easy is produced sumithion slow-release microcapsule Pesticidal products.
The material of producing the sumithion microencapsulation of pesticide with this method is toluene di-isocyanate(TDI) (TDI), polyalcohol glycerine (glycerine), sumithion agricultural chemicals crude oil and polyvinyl alcohol water solution.Its manufacture method is as follows:
A certain amount of sumithion crude oil and the miscible back of a certain amount of toluene di-isocyanate(TDI) are added in the polyvinyl alcohol water solution that is stirring, make sumithion agricultural chemicals crude oil form particulate (particle size is determined by mixing speed).Add quantitative glycerine after stirring certain hour, continue to stir, toluene di-isocyanate(TDI) and glycerine are fully acted on, and can form with sumithion agricultural chemicals crude oil is that capsule-core, toluene di-isocyanate(TDI) and glycerine polyester are the sumithion microcapsules aqueous suspension Pesticidal products of capsule skin.
The proportioning of concrete various compositions and technological parameter will be introduced in conjunction with following each embodiment.
The manufacture method of embodiment 1:10% sumithion microcapsules aqueous suspension:
1. 400 part of 0.5% polyvinyl alcohol water solution added in the reaction vessel of non-iron, copper, aluminum (container places water bath with thermostatic control), at normal temperatures with 50 rev/mins speed with agitator stir about 2 minutes;
2. with 60 parts of 88% sumithion crude oil, add TDI7 part, add at normal temperatures after stirring in the above-mentioned reaction vessel, regulate agitator speed to 450 rev/min, stirred 5～6 minutes, and made sumithion crude oil reach required particle size (particle size can be used microscopic examination);
3. get 14 parts of glycerine, thread adds in the container in the above-mentioned stirring, adds the speed that continues with 450 rev/mins the back and stirs 20 minutes, liquid in container is warming up to 30～40 ℃ simultaneously, reduces agitator speed to 200 rev/min, continues to stir 30～40 minutes;
4. regulate the container inner liquid medicine to subacidity (pH6～7), the microcapsules particle diameter be about the 10% sumithion microencapsulation of pesticide preparation of 25～30 μ m.
The manufacture method of embodiment 2:20% sumithion microcapsules aqueous suspension:
1. 180 part of 0.5% polyvinyl alcohol water solution added in the reaction vessel of non-iron, copper, aluminum (container places water bath with thermostatic control), at normal temperatures with 50 rev/mins speed with agitator stir about 2 minutes;
2. with 60 parts of 88% sumithion crude oil, add TDI7 part, add at normal temperatures after stirring in the above-mentioned reaction vessel, regulate agitator speed to 450 rev/min, stirred 5～6 minutes, and made sumithion crude oil reach required particle size (particle size can be used microscopic examination);
3. get 6 parts of glycerine, thread adds in the container in the above-mentioned stirring, adds the speed that continues with 450 rev/mins the back and stirs 20 minutes, liquid in container is warming up to 30～40 ℃ simultaneously, reduces agitator speed to 200 rev/min, continues to stir 30～40 minutes;
4. regulate the container inner liquid medicine to subacidity (pH6～7), the microcapsules particle diameter be about the 20% sumithion microencapsulation of pesticide preparation of 25～30 μ m.
The manufacture method of embodiment 3:30% sumithion microcapsules aqueous suspension:
1. 400 part of 0.5% polyvinyl alcohol water solution added in the reaction vessel of non-iron, copper, aluminum (container places water bath with thermostatic control), at normal temperatures with 50 rev/mins speed with agitator stir about 2 minutes;
2. with 60 parts of 88% sumithion crude oil, add TDI7 part, add at normal temperatures after stirring in the above-mentioned reaction vessel, regulate agitator speed to 450 rev/min, stirred 5～6 minutes, and made sumithion crude oil reach required particle size (particle size can be used microscopic examination);
3. get 14 parts of glycerine, thread adds in the container in the above-mentioned stirring, adds the speed that continues with 450 rev/mins the back and stirs 20 minutes, liquid in container is warming up to 30～40 ℃ simultaneously, reduces agitator speed to 200 rev/min, continues to stir 30～40 minutes;
4. regulate the container inner liquid medicine and to subacidity (pH6～7), leave standstill, treat to inhale gently after the sumithion microcapsules sink and remove 310 parts of supernatant liquids (moisture), the microcapsules particle diameter be about the 30% sumithion microencapsulation of pesticide preparation of 25～30 μ m.
In the various embodiments described above, same mixing speed, time and fluid temperature have been adopted.If change mixing speed, time and fluid temperature, will change the particle diameter and the uniformity of microcapsules.
Adopt made as follows of this method through storing the main physicochemical character of sumithion microcapsules soup in 1 year:
The light brown aqueous suspension of outward appearance (leave standstill time-division two-layer)
Capsule shape is slightly spherical in shape
During 27(35 ℃ of average particulate diameter (μ m))
Lethal dose of 50 LD
50(mg/kg) 3459
Wall thickness (μ m) 50～100
Store 2 all resolution ratios (%) 0.88～2.80 for 54 ± 2 ℃
Suspensibility (%) 72
Claims (2)
1, a kind of is the prescription that raw material is made sulfur-phosphorous microcapsule used for killing snout mouth's larva with sumithion agricultural chemicals crude oil, it is characterized in that with toluene di-isocyanate(TDI) (TDI), polyalcohol glycerine (glycerine), sumithion agricultural chemicals crude oil and polyvinyl alcohol water solution be raw material.
2, a kind of is the method that raw material is made sumithion microcapsules aqueous suspension with sumithion agricultural chemicals crude oil, it is characterized in that a certain amount of sumithion crude oil and the miscible back of a certain amount of toluene di-isocyanate(TDI) are added in the polyvinyl alcohol water solution that is stirring, add quantitative glycerine after making sumithion agricultural chemicals crude oil form particulate, continue to stir, making toluene di-isocyanate(TDI) and glycerine fully act on back formation is that capsule-core, toluene di-isocyanate(TDI) and glycerine polyester are the sumithion microcapsules aqueous suspension product of capsule skin with sumithion agricultural chemicals crude oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107292 CN1063017A (en) | 1992-02-17 | 1992-02-17 | Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92107292 CN1063017A (en) | 1992-02-17 | 1992-02-17 | Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1063017A true CN1063017A (en) | 1992-07-29 |
Family
ID=4942787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92107292 Pending CN1063017A (en) | 1992-02-17 | 1992-02-17 | Preparation method of sulfur-phosphorous microcapsule used for killing snout mouth's larva |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063017A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104839C (en) * | 1998-10-15 | 2003-04-09 | 广东省粮食科学研究所 | Coating for killing tardigrade |
| CN100486437C (en) * | 2003-09-23 | 2009-05-13 | 安徽康达化工有限责任公司 | Avermectin microcapsule suspending agent |
| CN103314960A (en) * | 2005-03-28 | 2013-09-25 | 住友化学株式会社 | Agricultural-chemical composition |
| CN104273122A (en) * | 2013-07-03 | 2015-01-14 | 上海追光科技有限公司 | Preparation method of long-acting polyurethane pesticide microcapsule |
| CN104430314A (en) * | 2014-12-16 | 2015-03-25 | 常熟市联创化学有限公司 | Rapidly degradable pesticide |
| CN105660690A (en) * | 2016-01-06 | 2016-06-15 | 中农立华生物科技股份有限公司 | Fosthiazate microcapsule suspending agent and preparation method thereof |
| CN111202061A (en) * | 2020-03-10 | 2020-05-29 | 宋浩 | Water-based self-emulsifying organic sulfur-phosphorus pesticide microcapsule and preparation method thereof |
-
1992
- 1992-02-17 CN CN 92107292 patent/CN1063017A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104839C (en) * | 1998-10-15 | 2003-04-09 | 广东省粮食科学研究所 | Coating for killing tardigrade |
| CN100486437C (en) * | 2003-09-23 | 2009-05-13 | 安徽康达化工有限责任公司 | Avermectin microcapsule suspending agent |
| CN103314960A (en) * | 2005-03-28 | 2013-09-25 | 住友化学株式会社 | Agricultural-chemical composition |
| CN104273122A (en) * | 2013-07-03 | 2015-01-14 | 上海追光科技有限公司 | Preparation method of long-acting polyurethane pesticide microcapsule |
| CN104273122B (en) * | 2013-07-03 | 2016-08-10 | 上海追光科技有限公司 | The preparation method of long-acting polyurethane pesticide micro capsule |
| CN104430314A (en) * | 2014-12-16 | 2015-03-25 | 常熟市联创化学有限公司 | Rapidly degradable pesticide |
| CN105660690A (en) * | 2016-01-06 | 2016-06-15 | 中农立华生物科技股份有限公司 | Fosthiazate microcapsule suspending agent and preparation method thereof |
| CN111202061A (en) * | 2020-03-10 | 2020-05-29 | 宋浩 | Water-based self-emulsifying organic sulfur-phosphorus pesticide microcapsule and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |