CN1256022C - Preparation method of water soluble compound natural insecticide - Google Patents
Preparation method of water soluble compound natural insecticide Download PDFInfo
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- CN1256022C CN1256022C CN 200410040319 CN200410040319A CN1256022C CN 1256022 C CN1256022 C CN 1256022C CN 200410040319 CN200410040319 CN 200410040319 CN 200410040319 A CN200410040319 A CN 200410040319A CN 1256022 C CN1256022 C CN 1256022C
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- insecticide
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Abstract
The present invention provides a preparation method of a compounding natural insecticide with water solubility. In the method, natural pyrethrin and nimbin are dissolved in an organic solvent at normal temperature to prepare the composition of the natural pyrethrin; cyclodextrin is added in the composition of the natural pyrethrin and nimbin, and the natural insecticide with the water solubility is prepared by evenly stirring and drying the cyclodextrin and the composition of the natural pyrethrin. The preparation method of the present invention has the advantages of simplicity, no toxicity and no environmental pollution.
Description
Technical field:
The present invention is relevant with method for producing insecticide, and is special relevant with the preparation method of water-soluble compound natural insecticide.
Background technology:
Natural pyrethrin and nimbin are generally acknowledged as excellent insecticide, are widely used in agricultural and health field.But natural pyrethrin and nimbin as the natural activity thing have easy photodissociation, hydrolysis, and be easily oxidized, the responsive and non-water-soluble shortcoming to the pH value.These shortcomings are that the processing and the use of natural pyrethrin and nimbin product brings negative effect.Being used as the natural pyrethrin or the nimbin of insecticide, is a class emulsion or a wetting powder.In natural pyrethrin that comes from plant or nimbin, allocate the emulsifier or the resulting goods of organic/inorganic carrier that obtain with various chemical methodes into, its toxicity and safety meeting change because of the adding of these non-plant source components.The affinity of plant resource effective ingredient and environment can be subjected to the influence of the especially poisonous auxiliary agent of auxiliary agent.
Natural pyrethrin is well-known to the quick-acting of insect, and desinsection is fast, and the residence time is short, and unique worm spectrum is arranged; And nimbin mainly shows as food refusal to the effect of insect, and speed of action is slower, but the residence time is short longer, and unique worm spectrum is also arranged.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide that a kind of preparation method is simple, the preparation method of avirulence, water-soluble compound natural insecticide free from environmental pollution.
The objective of the invention is to realize like this:
The preparation method of water-soluble compound natural insecticide of the present invention, this method is at normal temperatures natural pyrethrin and nimbin to be dissolved in the organic solvent, make the composition of natural pyrethrin-nimbin, in the combination of natural pyrethrin-nimbin, add cyclodextrine, stir, dry, make the inclusion compound of water-soluble natural pyrethrins-nimbin, promptly make the water-soluble natural insecticide, organic solvent is a methyl alcohol, ethanol, a kind of in the isopropyl alcohol also can adopt other polar organic solvent, and this inclusion compound can be half-dried thing or powder, soluble in water, also can further dilute.
In the above-mentioned method by weight, natural pyrethrin: nimbin: organic solvent: cyclodextrine=0.001～100: 0.001～100: 800～3000: 2000～5000.
Above-mentioned method adopts vacuum drying, is beneficial to the recovery solvent.
The composite water-soluble natural insecticide of the present invention is to connect water-soluble natural pyrethrins-nimbin inclusion compound that natural pyrethrin-the nimbin composition obtains by the cyclodextrine bag; its preparation method is simple: 1; the bag termination process is carried out at normal temperatures; need not to provide the protection of inert gas; 2; do not need in cyclodextrine, to add especially water; product need not dewater; 3; in the composition of natural pyrethrin-nimbin, directly add cyclodextrine; obtain containing the half-dried thing or the powder of composition, this half-dried thing or powder are soluble in water, and can further dilute.The water-soluble natural insecticide avirulence of the present invention's preparation, free from environmental pollution.Aspect agricultural chemical insecticide, in water-soluble natural insecticide inclusion compound of the present invention, add the chelating agent of water soluble filler and antagonism hard water, be easy to produce a kind of water solube powder; If on the basis of water-soluble pulvis, add excipients, disintegrant,, can obtain the water-soluble tablets of natural pyrethrin-nimbin again by compressing tablet.
Embodiment:
Embodiment 1:
The preparation method of the embodiment of the invention 1 water-soluble compound natural insecticide is: getting 100g purity is 50% natural pyrethrin, get 17.857g purity 42% nimbin and be dissolved in 1000g～2000g isopropyl alcohol, generating natural pyrethrin-nimbin solution is the composition of natural pyrethrin-nimbin.In the composition of this natural pyrethrin-nimbin, add cyclodextrine 2382.143g, stir, below 30 ℃, vacuum drying makes bag and meets mixture 2500g, and it is 2% that this thing contains natural pyrethrin, contain nimbin and be 0.3%, soluble in water, and can further dilute.
Embodiment 2:
The preparation method of the embodiment of the invention 2 water-soluble compound natural insecticides is: get the 100g50% natural pyrethrin, get the 119.05g42% nimbin and be dissolved in 1000g～2000g isopropyl alcohol, generating natural pyrethrin-nimbin solution is the composition of natural pyrethrin-nimbin.In the composition of this natural pyrethrin-nimbin, add cyclodextrine 2000g, stir, make bag of the present invention and connect mixture.Add water soluble filler 2700.95g again, sodium ethylene diamine tetracetate 30g, sucrose fatty ester 50g further stirs, below 30 ℃, vacuum drying makes bag and meets mixture 5000g, and this thing contains natural pyrethrin 1%, contain nimbin 1%, soluble in water, and can further dilute.
Get above-mentioned bag and meet mixture 20g, be dissolved in the 8000g water, just making natural pyrethrin and the concentration that concentration is 25ppm is 25ppm nimbin insecticide.
Claims (3)
1, the preparation method of water-soluble compound natural insecticide, it is characterized in that this method is at normal temperatures natural pyrethrin and nimbin to be dissolved in the organic solvent, make the composition of natural pyrethrin-nimbin, in the composition of natural pyrethrin-nimbin, add cyclodextrine, stir, drying promptly makes the water-soluble natural insecticide, and organic solvent is a kind of in methyl alcohol, ethanol, the isopropyl alcohol.
2, the preparation method of water-soluble compound natural insecticide as claimed in claim 1 is characterized in that by weight natural pyrethrin: nimbin: organic solvent: cyclodextrine=0.001～100: 0.001～100: 800～3000: 2000～5000.
3, the preparation method of water-soluble compound natural insecticide as claimed in claim 1 or 2 is characterized in that adopting vacuum drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040319 CN1256022C (en) | 2004-07-28 | 2004-07-28 | Preparation method of water soluble compound natural insecticide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410040319 CN1256022C (en) | 2004-07-28 | 2004-07-28 | Preparation method of water soluble compound natural insecticide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1596650A CN1596650A (en) | 2005-03-23 |
| CN1256022C true CN1256022C (en) | 2006-05-17 |
Family
ID=34664600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410040319 Expired - Fee Related CN1256022C (en) | 2004-07-28 | 2004-07-28 | Preparation method of water soluble compound natural insecticide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1256022C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102084868B (en) * | 2011-03-15 | 2014-01-08 | 浙江农林大学 | Azadirachtin and cyfluthrin composite for preventive treatment on potato beetles |
| CN104488978A (en) * | 2014-11-17 | 2015-04-08 | 红云红河烟草(集团)有限责任公司 | Special-purpose repellant for tobacco insect and application method thereof |
| CN108432826A (en) * | 2018-04-19 | 2018-08-24 | 成都欧甘拓展有限公司 | It kills, the preparation and preparation method thereof of repellent aphid |
| CN112189675A (en) * | 2020-08-04 | 2021-01-08 | 北京宇悦生物科技有限公司 | Pesticide nano drug-loading system and preparation method thereof |
| CN111903694A (en) * | 2020-08-04 | 2020-11-10 | 北京宇悦生物科技有限公司 | Pesticide nano carrier system for preventing and controlling pine cone pests and preparation method thereof |
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2004
- 2004-07-28 CN CN 200410040319 patent/CN1256022C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1596650A (en) | 2005-03-23 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU LVJIN HI-TECH CO.LTD. Free format text: FORMER OWNER: WU CHENGKUI Effective date: 20071026 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071026 Address after: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 A innovation center, 3 floor Patentee after: Chengdu Green Gold High-tech Co., Ltd. Address before: 610041 Sichuan province Chengdu City Road No. 5, Chengdu Gaopeng business park Chengdu gold green biotechnology limited liability company Patentee before: Wu Chengkui |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060517 Termination date: 20120728 |