CN100574618C - Insecticide of water micellar emulsion of natural pyrethrum element and preparation method - Google Patents

Insecticide of water micellar emulsion of natural pyrethrum element and preparation method Download PDF

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Publication number
CN100574618C
CN100574618C CN200710065895A CN200710065895A CN100574618C CN 100574618 C CN100574618 C CN 100574618C CN 200710065895 A CN200710065895 A CN 200710065895A CN 200710065895 A CN200710065895 A CN 200710065895A CN 100574618 C CN100574618 C CN 100574618C
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water
pyrethrum
insecticide
beaker
natural
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CN101049105A (en
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罗怀仲
马红令
王登举
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Xishuangbanna Sen Sen Industrial Co., Ltd.
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HONGHE SENJU BOISES CO Ltd
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Abstract

The present invention is water micellar emulsion of natural pyrethrum element and preparation method.Water micellar emulsion of natural pyrethrum element adopts natural assistant, chemical assistant and water formulated, and outward appearance is faint yellow transparent single-phase liquid.Natural pyrethrum is a kind of broad spectrum pesticide that extracts from pyrethrum flowers, easily decomposes in illumination and air, and is big to agriculture harmful insect virulence, and to warm blooded animal safety, environmentally safe, noresidue.The preparation success of water micellar emulsion of natural pyrethrum element, it is aerial stable to have improved pyrethrin greatly, and has realized the nanorize of emulsion droplet, has improved the control efficiency of medicament and the availability of soup.Water micellar emulsion of natural pyrethrum element is to imported cabbageworm, aphid, and most of agriculture vegetable-crop pest-insects such as daikon leaf beetle have good control efficiency, is a kind of desirable insecticide of producing pollution-free food, pollution-free food, organic food.

Description

Insecticide of water micellar emulsion of natural pyrethrum element and preparation method
Technical field
The present invention relates to insecticide, specifically insecticide of water micellar emulsion of natural pyrethrum element and preparation method.
Background technology
Natural pyrethrum is with a long history as utilizing of insecticide, can be used for domestic hygiene insect and agricultural insect management.Natural pyrethrum is a kind of insecticide that extracts from pyrethrum flowers, easily decomposes in illumination and air, and is big to agriculture harmful insect virulence, and to warm blooded animal safety, environmentally safe, noresidue.In agricultural insect management, natural pyrethrum is many to be occurred with formulations such as pulvis, finish, wetting powder and missible oil.And pyrethrin finish and missible oil chemical organic solvent and the plant resource solvents of adopting more, not only contaminated environment, and waste resource.And, making the Water-borne modification of natural pyrethrum formulation with water preparing natural pyrethrin microemulsion, the nanorize of emulsion droplet not only can economize on resources, and Environmental Safety, minimizing production cost, improves insecticidal effect.Be that base preparing natural pyrethrin microemulsion yet there are no report at present with water.
Summary of the invention
The purpose of this invention is to provide good, the easy degraded of a kind of drug effect, environmentally friendly, be the insecticide of water micellar emulsion of natural pyrethrum element and the preparation method of base to warm blooded animal safety, with water.
Insecticide of water micellar emulsion of natural pyrethrum element of the present invention is prepared with following raw material:
Used natural pyrethrum is the pyrethrin refined oil, preparing per 100 gram microemulsion pyrethrum cellulose contents is the 0.5-6 gram, synergist is the synthetic synergist of plant resource synergist or chemical industry, addition is pyrethrin content 1-5 times, the plant resource synergist is sesamin and citrene, sesamin (Asarinin, [sesamin] C 20H 18O 6) citrene, the synthetic synergist of chemical industry has piperonyl butoxide (PBO, 3,4--methylene-dioxy--6--n-pro-pyl benzyl normal-butyl tirethylene glycol ether, C 19H 30O 5) and synergy phosphorus (SV, O, O-diethyl-O-phenyl thiophosphate, C 10H 15O 3PS); Antioxidant is plant resource antioxidant or chemical industry synthetized oxidation preventive agent, the plant resource antioxidant is a rosemary,, and addition is 2% of a pyrethrum cellulose content, and the chemical industry synthetized oxidation preventive agent is an antioxidant BHT (chemistry by name 2, the 6--di-tert-butyl-4-methy phenol, C 15H 24O), addition is 40% of a pyrethrum cellulose content; Emulsifier is alkyl benzene calcium sulfonate, styryl phenol APEO, phenethyl phenol polyethenoxy polyethenoxy ether compounded surfactant, and addition is the 10-16% of 100 grams; The infiltration spreading agent is silicone based, and as organosilicon 810c, 818 etc., adding people's amount is the 2-10% of 100 grams; Solvent is a distilled water, fills up 100%; Cosurfactant is an absolute ethyl alcohol, and addition is the 4-5% of 100 grams.
The preparation method:
1. take by weighing the pyrethrin essential oil according to quantity and place beaker;
2. synergist is poured in the beaker, fully mixing and stirring;
3. again antioxidant is poured in the beaker, fully mixing and stirring;
4. again bleeding agent is poured in the beaker, fully mixing and stirring;
5. add emulsifier again, fully mixing and stirring;
6, add distilled water again, high-speed stirred is even;
7, add again the absolute ethyl alcohol high-speed stirred reach transparent, get final product water micellar emulsion of natural pyrethrum element.
Above institute all prepares under 30-35 ℃ in steps.When in preparing tank, preparing, follow above step equally, under continuous stirring condition, add each batching one by one.
The present invention's configuration such as the raw materials that adopt natural pyrethrum, synergist, antioxidant, infiltration spreading agent, emulsifier, absolute ethyl alcohol and distilled water water micellar emulsion of natural pyrethrum element of filling a prescription, make with the immiscible pyrethrin of water under the effect of surfactant and cosurfactant, form isotropism, Thermodynamically stable, appearance transparent or translucent, single-phase mobile dispersion.Preparing natural pyrethrin microemulsion has following advantage:
1, makes the Water-borne modification of natural pyrethrum formulation, thereby economize on resources, reduce production costs.
2, water micellar emulsion of natural pyrethrum element is thermodynamically stable system, makes the oxidation Decomposition of pyrethrin controlled, and in 54 ± 2 ℃ of heat two weeks of storage, the pyrethrin resolution ratio is below 3%.
3, the particle of water micellar emulsion of natural pyrethrum element water dilution back micro emulsion makes emulsion droplet reach nanoscale between 10-100nm, is easily absorbed by insect to enter polypide by epidermis, improves the pest control effect; In addition, when forming small particle, its infiltration expansion also increases substantially, thereby has improved the availability of soup.
This natural pyrethrum is a kind of broad spectrum pesticide that extracts from pyrethrum flowers, easily decomposes in illumination and air, and is big to agriculture harmful insect virulence, and to warm blooded animal safety, environmentally safe, noresidue.The preparation success of water micellar emulsion of natural pyrethrum element, it is aerial stable to have improved pyrethrin greatly, and has realized the nanorize of emulsion droplet, has improved the control efficiency of medicament and the availability of soup.Water micellar emulsion of natural pyrethrum element is to imported cabbageworm, aphid, and most of agriculture vegetable-crop pest-insects such as daikon leaf beetle have good control efficiency, is a kind of desirable insecticide of producing pollution-free food, pollution-free food, organic food.
Below be the test situation of 1.5% insecticide of water micellar emulsion of natural pyrethrum element:
1, stability test: prepare 1.5% water micellar emulsion of natural pyrethrum element 50ml, it is airtight to be distributed into two bottles of 25ml, prepare 1.5% natural pyrethrum finish (solvent deodorized kerosine) again and do contrast, stored for two weeks in 50 ± 2 ℃, analyze Dalmatian chrysanthemum content with gas chromatograph before the heat storage, the heat storage was analyzed once in back 7 days, analyzed once in 14 days, calculated the pyrethrin resolution ratio.Computing formula is:
Pyrethrum microemulsion heat storage stability test (table 1)
The heat storage has only 1.53% from the resolution ratio of 1.5% water micellar emulsion of natural pyrethrum element pyrethrin after two weeks, and the resolution ratio comparison is according to reducing greatly, and the formation of visible pyrethrin micro emulsion is stablized the very big effect of having played to pyrethrin.
2, field medicine effect test: for the examination insect is cabbage caterpillar, and 1.5% natural pyrethrum micro emulsion divides 500 times and 1000 times of concentration gradient water dilutions, and each 1 experimental plot of each concentration gradient is established 1 blank sub-district in addition, the spray clear water.Insect population investigation divide before the spray medicine and the spray medicine one day after, three days, seven days borer population alive.Trial crops is that lotus flower is white.Survey data and computing formula are:
1.5% water micellar emulsion of natural pyrethrum element imported cabbageworm (larva) test of pesticide effectiveness (table 2)
Above result of the test shows that 1.5% water micellar emulsion of natural pyrethrum element is converted the water dilution for 500 times, 1000 times the control imported cabbageworm is had fabulous control efficiency, and control efficiency but is converted water dilution control for well with 1000 times all about 95%.Both good control efficiency can be reached, the consumption of medicament can be reduced again.
Embodiment:
Embodiment 1:
Preparation 100 grams 1.5% water micellar emulsion of natural pyrethrum element:
1. take by weighing 3 gram pyrethrin essential oils (pyrethrin content is 50%) and place beaker;
2. take by weighing 10 gram piperonyl butoxides and pour in the beaker, stir;
3. take by weighing 0.6 gram antioxidant BHT and pour in the beaker, stir;
4, take by weighing 2 gram organosilicons 818 and put in the beaker, stir;
5. take by weighing 14 gram composite emulsifiers [Tianjin people's ripple biochemistry Science and Technology Ltd. produces, No. 2, commodity (China) agricultural university by name] and put in the beaker, stir;
6. take by weighing 65 gram distilled water and slowly add in the beaker, stir while adding;
7, take by weighing 5 gram absolute ethyl alcohols again and slowly add in the beaker, stir while adding;
Embodiment 2:
Preparation 100 grams 3% water micellar emulsion of natural pyrethrum element:
1. take by weighing 6 gram pyrethrin essential oils (pyrethrin content is 50%) and place beaker;
2. take by weighing 6 gram sesame oil and pour in the beaker, stir;
3. take by weighing the 0.15 gram smart cream of rosemary, (rosemary, content is 40%) and pour in the beaker, stir;
4, take by weighing 2 gram organosilicon 810c and put in the beaker, stir;
5. take by weighing 16 gram composite emulsifiers (the same) and put in the beaker, stir;
6. take by weighing 64.85 gram distilled water and slowly add in the beaker, stir while adding;
7, take by weighing 5 gram absolute ethyl alcohols again and slowly add in the beaker, stir while adding;
Embodiment 3:
Preparation 100 grams 6% water micellar emulsion of natural pyrethrum element:
1. take by weighing 12 gram pyrethrin essential oils (pyrethrin content is 50%) and place beaker;
2. take by weighing 24 gram piperonyl butoxides and pour in the beaker, stir;
3. take by weighing 4.8 gram antioxidant BHTs and pour in the beaker, stir;
4, take by weighing 4 gram organosilicons 818 and put in the beaker, stir;
5. take by weighing 16 gram composite emulsifiers (the same) and put in the beaker, stir;
6. take by weighing 34.2 gram distilled water and slowly add in the beaker, stir while adding;
7, take by weighing 5 gram absolute ethyl alcohols again and slowly add in the beaker, stir while adding;
Embodiment 4:
Preparation 100 grams 6% natural pyrethrum micro emulsion:
1. take by weighing 12 gram pyrethrin essential oils (pyrethrin content is 50%) and place beaker;
2. take by weighing 24 gram sesame oil and pour in the beaker, stir;
3. take by weighing the 0.15 gram smart cream of rosemary, (rosemary, content is 40%) and pour in the beaker, stir;
4, take by weighing 4 gram organosilicon 810c and put in the beaker, stir;
5. take by weighing 16 gram composite emulsifiers (the same) and put in the beaker, stir;
6. take by weighing 38.85 gram distilled water and slowly add in the beaker, stir while adding;
7, take by weighing 5 gram absolute ethyl alcohols again and slowly add in the beaker, stir while adding;
Embodiment 1, embodiment 2,4 of embodiment 3, embodiment all prepare under 30~35 ℃ in steps.Above step is followed in preparation equally in preparing tank, under continuous stirring condition, adds each batching one by one every 20 minutes.Transparent or semitransparent to micro emulsion.

Claims (2)

1. insecticide of water micellar emulsion of natural pyrethrum element, it is characterized in that making with following materials of weight proportions: the pyrethrum cellulose content is the 0.5-6% of insecticide total amount, the 1-5 that the synthetic synergist piperonyl butoxide of plant resource synergist sesamin or chemical industry is a pyrethrin content doubly, bleeding agent organosilicon 810c or 818 is the 2-10% of insecticide total amount, emulsifier is the 10-16% of insecticide total amount, plant resource stabilizing agent rosemary, is 2% of a pyrethrum cellulose content, perhaps chemical industry synthesizing stable agent 2, the 6-di-tert-butyl-4-methy phenol is 40% of a pyrethrum cellulose content, the cosurfactant absolute ethyl alcohol is the 4-5% of insecticide total amount, water complements to 100%, and wherein emulsifier is the emulsifier of No. 2, the commodity agricultural university by name that produces of Tianjin people's ripple biochemistry Science and Technology Ltd..
2. the preparation method of insecticide of water micellar emulsion of natural pyrethrum element according to claim 1 is characterized in that carrying out according to the following steps:
1. take by weighing the pyrethrin essential oil according to quantity and place beaker;
2. synergist is poured in the beaker, fully mixing and stirring;
3. again antioxidant is poured in the beaker, fully mixing and stirring;
4. again bleeding agent is poured in the beaker, fully mixing and stirring;
5. add emulsifier again, fully mixing and stirring;
6, add distilled water again, high-speed stirred is even;
7, adding the absolute ethyl alcohol high-speed stirred again reaches and transparently can make water micellar emulsion of natural pyrethrum element.
Above institute all prepares under 30-35 ℃ in steps.Above step is followed in preparation equally in preparing tank, under continuous stirring condition, adds each batching one by one.
CN200710065895A 2007-05-22 2007-05-22 Insecticide of water micellar emulsion of natural pyrethrum element and preparation method Expired - Fee Related CN100574618C (en)

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CN101341875B (en) * 2008-08-25 2011-06-08 严兵 Water-based natural pyrethrin sanitary insecticide and preparation method thereof
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
CN101971866B (en) * 2010-10-20 2013-11-13 华南理工大学 Chlorantraniliprole and natural pyrethrin compound insecticidal microemulsion and preparation method thereof
CN107950547B (en) * 2017-11-21 2020-12-04 河南科技大学 Composition for preventing and treating crop powdery mildew and application thereof
CN107821463A (en) * 2017-12-05 2018-03-23 徐州农丰生物化工有限公司 A kind of pyrethrum element pesticide and preparation method thereof
CN108770842A (en) * 2018-05-31 2018-11-09 湖北归然生物科技有限公司 The preparation method of high efficiency high stable 2% pyrethrin and matrine compound microemulsion
CN111357744A (en) * 2020-03-30 2020-07-03 云南南宝生物科技有限责任公司 Natural pyrethrum extract composition and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN101961033A (en) * 2010-10-20 2011-02-02 华南理工大学 Flubendiamide and natural pyrethrum compounded insect-killing microemulsion and preparation method thereof
CN101961033B (en) * 2010-10-20 2013-06-12 华南理工大学 Flubendiamide and natural pyrethrum compounded insect-killing microemulsion and preparation method thereof

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