CN101341875B - Water-based natural pyrethrin sanitary insecticide and preparation method thereof - Google Patents
Water-based natural pyrethrin sanitary insecticide and preparation method thereof Download PDFInfo
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- CN101341875B CN101341875B CN200810124541XA CN200810124541A CN101341875B CN 101341875 B CN101341875 B CN 101341875B CN 200810124541X A CN200810124541X A CN 200810124541XA CN 200810124541 A CN200810124541 A CN 200810124541A CN 101341875 B CN101341875 B CN 101341875B
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Abstract
The invention discloses water-based natural pyrethrin hygienic insecticide and a preparation method thereof; the water-based natural pyrethrin hygienic insecticide comprises the following components: 0.1 percent to 0.4 percent of natural pyrethrin active component, 2 percent to 4 percent of built polyether emulsifier, trace stabilizer and osmotic agent, and 100 percent of deionized water. The water-based natural pyrethrin hygienic insecticide has quite strong penetrating power, takes effect quickly after being applied, and has equal desinsection effect to that of A-level standard pyrethroid aqua as tested. The appearance of the liquid medicine is clear and transparent aqueous solution which is not layered and deposited after being stored for more than two years; the aqua quality is stable and the desinsection effect is not reduced. The hygienic insecticide does not contain flammable and explosive organic solvent, latent solvent and other substances which harm the health of people and pollute the environment, and is insecticide which has very low toxicity and no public harm. The insecticide of the invention has wide scope of application, can kill mosquitoes, flies, cockroaches, louse, bedbugs and other hygiene pests and even prevent chewing type and piercing- sucking type pests in crops.
Description
Technical field
The present invention relates to a kind of pyrethrin preparation, specifically a kind of water-based natural pyrethrin sanitary insecticide and preparation method thereof.
Background technology
Dalmatian chrysanthemum is a composite family Chrysanthemum herbaceos perennial, be a kind of long natural pesticide plant that uses, therefrom extract pyrethrin (trade name: natural pyrethrin) mainly contain the plain I of pyrethrin I, pyrethrin II, cineraria, the plain II of cineraria, six kinds of active insecticidal components such as the plain I of jasmine chrysanthemum, the plain II of jasmine chrysanthemum.Have the effect of paralysis insect nervous centralis, be the killing insects by touching agent, the insecticidal activity height, insect is difficult for developing immunity to drugs, and also is broad spectrum pesticide simultaneously.Natural pyrethrum sees that at occurring in nature light slowly resolves into water and carbonic acid gas and residual low, and people and animals are waited the homoiothermy animal safety, is internationally recognized safest environmental-pollution insecticide, is one of safe plants insecticide of recommending of FAO (Food and Agriculture Organization of the United Nation).Natural pyrethrum is water insoluble, only is dissolved in organic solvent.
Now developed multiple pyrethrin desinsection formulation, in pyrethrin water emulsion preparation, add organic solvent, cosolvent, a large amount of emulsifier, the adding of these compounds, human health and environment are caused new harm, weakened the environment-friendly advantage of botanical pesticide, its application in high-end insecticide market and hygienic insecticide field has been restricted, simultaneously, inflammable and explosive unsafe factor and the cost of having increased of organic solvent wasted resource and polluted environment.
At application number is 200510048714.0, and name is called in the patent of aqueous emulsion of natural pyrethrum and preparation method thereof, has introduced water and milk formulation of a kind of natural pyrethrum and preparation method thereof.The used emulsifier of this invention is Tween 80 and nonionic emulsifier, total amount 10.25%～32%, and beta cyclodextrin 1%～20%, cosolvent 10%, therefore, the content of water is 22.6%～87.95% in the said preparation.
At application number is 200510048737.1, and name is called in the patent of aqueous emulsion of natural pyrethrum and preparation method thereof, has introduced water and milk formulation of another kind of natural pyrethrum and preparation method thereof.The prescription of the described aqueous emulsion of this patent consists of: natural pyrethrum 1%, and benzene sulfonic acid sodium salt 10%～95%, synergist 1%～30%, water 0%～95%, when emulsifier was 95%, the product of producing can not be an aqueous emulsion, but a kind of thickness body.Secondly, this patent P-TOLUENE SULFO ACID 99 sodium lists 8 kinds of materials as emulsifier, and wherein lauryl sodium sulfate and alkyl phosphate salt do not belong to the benzene sulfonic acid sodium salt salt, and dodecyl sodium sulfonate calcium neither benzene sulfonic acid sodium salt, and calcium salt can not be directly water-soluble.In addition, the content of water is 0%～95% in this patent prescription, and when the content of water was 0%, product can not be an aqueous emulsion.
More than two to apply for a patent all be aqueous emulsion, discrete particles is a thermodynamic instability phase dispersed system greater than 100nm, easily muddy and precipitation, and contain a large amount of organic solvents, cosolvent has had a strong impact on the use of medicine.In the prior art, aqueous emulsion of natural pyrethrum contains harmful substances such as inflammable and explosive organic solvent, cosolvent, and poor stability has caused harmful effect to human health and environment.
Summary of the invention
In order to overcome problems of the prior art, the purpose of this invention is to provide a kind of inflammable and explosive organic solvent, cosolvent etc. of not containing and endanger water-based natural pyrethrin sanitary insecticide of health of people and contaminated environment material and preparation method thereof.Water-based natural pyrethrin sanitary insecticide of the present invention is the extremely low environmental-pollution insecticide of toxicity.
The objective of the invention is to be achieved through the following technical solutions:
A kind of water-based natural pyrethrin sanitary insecticide, it is characterized in that: it is made up of natural pyrethrum active component, composite polyether-type emulsifier, stabilizing agent, bleeding agent and water, its mass percent is: the natural pyrethrum active component is 0.1%～0.4%, composite polyether-type emulsifier is 2%～4%, stabilizing agent is 0.1%～0.5%, bleeding agent is 0.1%～0.5%, water 94.6%～97.7%.
Among the present invention, described natural pyrethrum contains 50% active component.Described stabilizing agent is an antioxidant, suppresses and delay the oxidative degradation of active component, as antioxidant 2,6-di-t-butyl-4-methylphenol (246) or 2,5-di-tert-butyl hydroquinone etc.
The present invention selects for use bleeding agent nontoxic and that penetration is strong to participate in system emulsification, makes medicine quick penetration insect surface produce stronger lethality, as bleeding agents such as azones.Described emulsifier is composite by non-ionic surface active agent, can be alkylphenol polyoxyethylene and alkylbenzenesulfonate.
Water-based natural pyrethrin sanitary insecticide of the present invention is prepared by following method:
1) gets natural pyrethrosin primary medicine 0.2%～0.4%, stabilizing agent 0.1%～0.5%, mixing;
2) get emulsifier 2%～4%, stir evenly in the adding step 1);
3) water of getting capacity makes the pyrethrin active component content reach 0.2%～0.4%, is heated to 30 ℃～50 ℃;
4) with step 2) be heated to 30 ℃～50 ℃ after, pour in the step 3) while stirring, normal pressure insulation in reactor, fully stir until the aqueous solution that obtains clear, add bleeding agent 0.1%～0.5%, stir evenly, leave standstill, filter, obtain active component and be 0.1%～0.4% water-based natural pyrethrin sanitary insecticide.
The present invention is under the condition that does not contain inflammable and explosive organic solvent, cosolvent, select suitable small amounts of emulsifiers (only account for prescription 2%～4%) for use, directly act on emulsification with medicine, emulsifier forms nonpoisonous and tasteless micellar solution with lower concentration and medicine, former medicine is dispersed in (content of water is more than 90% in the system) in the big water gaging with less nanometer particle, make a kind of dispersion of transparent and stable, obtain the biologically active height, can give full play to the aqua type insecticide of drug effect.And traditional handicraft is with the agricultural chemicals earlier dissolving of organic solvents such as a large amount of emulsifier and cosolvent with indissoluble, most cosolvents cyclohexanone, dimethylbenzene, and toxicity is big, taste is big, infringement liver and hemopoietic system.
Water-based natural pyrethrin sanitary insecticide of the present invention, its outward appearance is the aqueous solution of clear, former medicine is dispersed in the water with minimum nanometer particle, play synergy with bleeding agent, strengthen the penetration power of soup, bring into play the biologically active of former medicine to greatest extent, reduced dosage, improved insecticide efficiency, rapid-action after the aqua type insecticide dispenser of making, the insecticidal effect pyrethroid aqua with the A grade standard after tested is suitable.The stable performance of water aqua type insecticide was placed more than 2 years, the outward appearance no change, and no layering does not have precipitation, and insecticidal effect does not descend.For keeping the natural pyrethrum environment-friendly advantage, the present invention does not contain harmful substances such as inflammable and explosive organic solvent, cosolvent, select for use non-toxic emulsifying agent and consumption to be controlled at reasonable range, avoided secondary pollution, its harmful effect to human health and environment is minimized.Simultaneously, also improved the safety of insecticide production, accumulating and use.
But water-based natural pyrethrin sanitary insecticide provided by the invention is sanitary insect pests such as kill mosquitoes, fly, cockroach, louse, bedbug not only, can also kill on vegetables, fruit, flowers, tealeaves, the traditional Chinese medicine as chewing type, pierce-suck type crop pests such as aphid, cabbage caterpillar, Liriomyza, potato class beetle, moths.Kill parasites such as on one's body lice of animal, flea, mite.
Embodiment
Embodiment 1:
A kind of water-based natural pyrethrin sanitary insecticide, it is by natural pyrethrum active component, alkylphenol polyoxyethylene and alkylbenzenesulfonate (composite polyether-type emulsifier), antioxidant 2,6-di-t-butyl-4-methylphenol (stabilizing agent), azone (bleeding agent) and water are formed, its mass percent is: the natural pyrethrum active component is 0.3%, composite polyether-type emulsifier is 3%, stabilizing agent is 0.1%, and bleeding agent is 0.2%, water 96.4%.
The preparation method of above-mentioned water-based natural pyrethrin sanitary insecticide is as follows:
1) takes by weighing the natural pyrethrosin primary medicine 0.6% that contains 50% active component, micro-stabilizing agent mixing;
2) take by weighing 3% emulsifier, add 1) in stir evenly;
3) water that takes by weighing capacity makes the pyrethrosin primary medicine activity reach 0.3%, is heated to 30 ℃～50 ℃;
4) with 2) be heated to 30 ℃～50 ℃ after, pour 3 while stirring into) in, normal pressure insulated and stirred in reactor, about 3000 rev/mins of rotating speed fully stirs until the aqueous solution that obtains clear, adds the microdialysis agent, stir evenly, leave standstill, filter, obtain the water-based natural pyrethrin sanitary insecticide of active component 0.3%.
Embodiment 2:
A kind of water-based natural pyrethrin sanitary insecticide, it is by natural pyrethrum active component, alkylphenol polyoxyethylene and alkylbenzenesulfonate (composite polyether-type emulsifier), antioxidant 2,6-di-t-butyl-4-methylphenol (stabilizing agent), azone (bleeding agent) and water are formed, its mass percent is: the natural pyrethrum active component is 0.4%, composite polyether-type emulsifier is 4%, stabilizing agent is 0.1%, and bleeding agent is 0.2%, water 95.3%.
The preparation method of above-mentioned water-based natural pyrethrin sanitary insecticide is as follows:
1) takes by weighing 50% natural pyrethrosin primary medicine 0.8%, micro-stabilizing agent mixing;
2) take by weighing 4% emulsifier, add 1) in stir evenly;
3) water to the pyrethrin content that takes by weighing capacity is 0.4%, is heated to 30 ℃～50 ℃;
4) with 2) be heated to 30 ℃～50 ℃ after, pour 3 while stirring into) in, normal pressure insulated and stirred in reactor, about 3000 rev/mins of rotating speed fully stirs until the aqueous solution that obtains clear, adds the microdialysis agent, stir evenly, leave standstill, filter, obtain the water-based natural pyrethrin sanitary insecticide of active component 0.4%.
Claims (1)
1. water-based natural pyrethrin sanitary insecticide, it is characterized in that: it is made up of natural pyrethrum active component, composite polyether-type emulsifier, stabilizing agent, bleeding agent and water, its mass percent is: the natural pyrethrum active component is 0.1%～0.4%, composite polyether-type emulsifier is 2%～4%, stabilizing agent is 0.1%～0.3%, bleeding agent is 0.1%～0.3%, water 95%～97.7%; Described stabilizing agent is 2,6 di tert butyl 4 methyl phenol or 2, the 5-di-tert-butyl hydroquinone; Described bleeding agent is an azone; Described emulsifier is composite by non-ionic surface active agent; Emulsifier is alkylphenol polyoxyethylene and alkylbenzenesulfonate; Former medicine is dispersed in the water with nanometer particle.
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| CN101341875B true CN101341875B (en) | 2011-06-08 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102232379B (en) * | 2010-05-06 | 2014-03-26 | 福建省金鹿日化股份有限公司 | Water-based electrothermal liquid mosquito-repellent incense and preparation method thereof |
| CN101836770B (en) * | 2010-06-02 | 2012-09-05 | 许小丽 | Nanometer element fabric workout clothes capable of powerfully killing acarid |
| CN101965847A (en) * | 2010-09-27 | 2011-02-09 | 红河森菊生物有限责任公司 | Solid preparation for controlling underground insects and preparation method thereof |
| CN102754660B (en) * | 2011-04-28 | 2014-03-05 | 上海生农生化制品有限公司 | Preparation and application of water-based hygienic insecticide |
| CN104126577A (en) * | 2014-07-18 | 2014-11-05 | 蔡荣昌 | Scented water-based household insecticide |
| CN104126572A (en) * | 2014-07-18 | 2014-11-05 | 蔡荣昌 | Household scented water-based insecticide |
| CN104798771B (en) * | 2015-05-14 | 2017-06-20 | 许春晖 | A kind of water base mosquito liquid with Cardanol derivative as solvent |
| CN106614773A (en) * | 2016-12-21 | 2017-05-10 | 嘉兴他她健康科技有限公司 | Mite inducing and killing agent |
| CN109090130A (en) * | 2017-06-21 | 2018-12-28 | 季剑 | The preparation of slow-release natural pyrethrum mosquito repellent pulvis |
| CN107136057A (en) * | 2017-06-30 | 2017-09-08 | 扬州大学 | A kind of highly effective and safe pyrethrin nanometer aqueous emulsion and preparation method thereof |
| CN108575980A (en) * | 2018-02-11 | 2018-09-28 | 中国人民解放军62040部队 | A kind of excitation blattaria spray |
| CN114145315A (en) * | 2021-12-29 | 2022-03-08 | 成都绿金生物科技有限责任公司 | Pyrethrum extract emulsion in water and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991015953A1 (en) * | 1990-04-18 | 1991-10-31 | The Procter & Gamble Company | Anti-lice treatment compositions |
| CN1985598A (en) * | 2005-12-22 | 2007-06-27 | 云南玉溪亚临界植物化工有限责任公司 | Natural pyrethrin water emulsion and its preparation |
| CN101049105A (en) * | 2007-05-22 | 2007-10-10 | 红河森菊生物有限责任公司 | Insecticide of water micellar emulsion of natural pyrethrum element and preparation method |
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2008
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991015953A1 (en) * | 1990-04-18 | 1991-10-31 | The Procter & Gamble Company | Anti-lice treatment compositions |
| CN1985598A (en) * | 2005-12-22 | 2007-06-27 | 云南玉溪亚临界植物化工有限责任公司 | Natural pyrethrin water emulsion and its preparation |
| CN101049105A (en) * | 2007-05-22 | 2007-10-10 | 红河森菊生物有限责任公司 | Insecticide of water micellar emulsion of natural pyrethrum element and preparation method |
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Address after: No. 58 Dong Fang Road Jianye Wanda brocade District of Nanjing City, Jiangsu province 210000 Building 2 Room 601 Patentee after: Yan Bing Address before: 210036 Sunshine Plaza, Gulou District, Jiangsu 4-1002, Nanjing Patentee before: Yan Bing |
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Effective date of registration: 20170726 Address after: 519040 Guangdong province Zhuhai jinhai'an Avenue Sanzao town Jinwan District East industry city building two floor Patentee after: Qiu Guirong Address before: No. 58 Dong Fang Road Jianye Wanda brocade District of Nanjing City, Jiangsu province 210000 Building 2 Room 601 Patentee before: Yan Bing |
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