CN105284859A - Preparation method of thiacloprid insecticide compound - Google Patents

Abstract

The invention discloses a preparation method of a thiacloprid insecticide compound. The method is characterized by comprising the following steps: (1) uniformly mixing the raw materials of 1-50% of thiacloprid, 6-80% of chlorfenapyr, 2-12% of lignin, 1-6% of wetting agent, 2-6% of disintegrating agent, 1-5% of tea oil, 1-5% of chlorothalonil and the balance of carrier besides the tea oil to obtain a mixture; (2) performing superfine grinding on the mixture through a jet mill to obtain mother powder; (3) weighing a certain amount of the mother powder subjected to the superfine grinding and placing in a rotary fluidized bed; (4) opening the rotary fluidized bed and adding a water solution added with the tea oil slowly for pelleting; (5) drying after the pelleting is finished; (6) screening dried granules and analyzing and inspecting to obtain water dispersible granules. The thiacloprid insecticide compound is suitable for controlling piercing-sucking mouthpart insects of paddy rice, vegetables, fruit trees, flowers and lawns. The compounding of two effective components has an obvious synergism action and improves a preventing and treating effect; the usage of a pesticide is reduced and the promotion and application of the compound have higher economic and social benefits.

Description

A kind of preparation method of thiacloprid disinsection compound thing

Technical field:

The present invention relates to the preparation method of thiacloprid disinsection compound thing, specifically a kind of preparation method containing the synergy thiacloprid disinsection compound thing of thiacloprid and capillary, for preventing and treating the suckings pest such as paddy rice, vegetables, fruit tree, flowers, lawn.

Background technology:

Thiacloprid be a kind of newly have efficient broad spectrum pesticide to sucking pest, different according to crop, insect and method of application, its consumption is 50.4 ~ 100.8ga.i./hm2.Field trial shows, thiacloprid has excellent control efficiency to the important pests on tea tree, pomaceous fruits fruit, cotton, vegetables and potato.Except to aphid, aleyrodid, thrips effectively except, it to various beetle (as colorado potato beetle, apple weevil, Lissorhoptrus oryzophilus Kuschel) and lepidoptera pest as the leaf miner on apple tree and codling moth are also effective, and all applicable to corresponding all crops.

Thiacloprid acts on nicotinic acetylcholine receptors.It and common insecticides do not have cross resistance as pyrethroid, organic phosphates and carbamates, thus can be used for resistance management.Thiacloprid has interior absorption and has Acute exposure toxicity and stomach poison function.The soil half life period of thiacloprid is short, to birds, fish and multiple beneficial arthropods safety.It is very safe to honeybee, can use equally at flowering phase of crop.Due to thiacloprid low toxicity, efficiently, liked by numerous users.

Capillary is new pyrrole class Insecticidal and acaricidal agent.To various pests, mite, there is stomach toxicity and action of contace poison, to crop safety, be applicable to control brassicaceous vegetable diamond-back moth, beet armyworm, tea tree tea lesser leafhopper, looper, mite, citrus red mites etc., have the advantages such as preventive effect is high, the lasting period is longer, dosage is low.

In recent years, the sucking pest on crops is caused harm seriously, and the medicine such as peasant's Long-Time Service Imidacloprid, Biphenthrin, chlopyrifos produces serious resistance, occurs strengthening dosage, control efficiency difference problem, and environmental pollution is also tending towards serious.

The mixture of different pesticide species is the common methods of preventing and treating agriculture resistant insect.Screened by formulation of pesticide, filter out rational formula, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay the generation of pest resistance to insecticide, extending the service life of medicament, is the important means of integrated pest management.The present inventor a large amount of indoor virulences screening and field medicine effect test basis on, discovery thiacloprid and capillary mixture to suckings pest such as aphids, there is synergistic function.

Water dispersible granular can disperse rapidly in water in disintegration, being formed can for the suspension of spraying or solution, its major advantage is without dust or there is few dust to produce when producing and use, to use and producer's safety, and have the advantage of aqueous emulsion and wetting powder concurrently, thus become fashion trend formulation that is the most potential on international market and development prospect.

Summary of the invention:

The object of the invention is to overcome the shortcoming existed in prior art, there is provided using method simple, use the object of the invention is thiacloprids different for the mechanism of action and capillary are carried out mixture, make full use of the synergistic effect that both mixtures produce, there is provided a kind of agricultural chemicals thiacloprid disinsection compound thing of efficient, low toxicity, low cost, for preventing and treating the suckings pest such as paddy rice, vegetables, fruit tree, flowers, lawn.

Technical scheme of the present invention: a kind of preparation method containing the synergy thiacloprid disinsection compound thing of thiacloprid and capillary, with thiacloprid and capillary for active ingredient, in composition, the weight percentage of thiacloprid is 1 ~ 50%, the weight percentage of capillary is 5% ~ 80%.

Thiacloprid disinsection compound thing of the present invention adds suitable auxiliary agent and makes water dispersible granules.

Described auxiliary agent is: lignin 2% ~ 12%, wetting agent 1% ~ 6%, disintegrant 2% ~ 6%, adhesive 1% ~ 5%, tpn 1% ~ 5%, surplus are carrier.

Wherein, lignin is selected from one or more in alkylbenzenesulfonate, two naphthyl sulphonic acids salt, acrylic acid polymers sodium salt, ethoxylated dodecyl alcohol; Wetting agent is selected from lauryl sodium sulfate, pulls open powder, one or more in wetting and penetrating agent F, spaonin powder; Disintegrant be selected from bentonite, ammonium sulfate, aluminium chloride, citric acid, succinic acid, carbonic hydroammonium one or more; Carrier be selected from kaolin, diatomite, white carbon one or more.

Its preparation method carries out as follows.

(1) thiacloprid 1 ~ 50%, capillary 6% ~ 80%, lignin 2% ~ 12%, wetting agent 1% ~ 6%, disintegrant 2% ~ 6%, tea oil 1% ~ 5%, tpn 1% ~ 5%, surplus are carrier; Except tea oil, other raw material mixes and obtains mixture.

(2) mixture is carried out obtaining female powder after ultramicro grinding through airslide disintegrating mill.

(3) the female powder obtained after ultramicro grinding is taken certain amount and put into revolving fluid bed.

(4) aqueous solution that revolving of unlatching fluid bed also slowly adds tea oil toward it carries out granulation.

(5) dry after granulation completes.

(6) shot-like particle of oven dry carried out sieve, namely obtain water dispersible granules after analytical control.

Beneficial effect of the present invention is.

(1) thiacloprid disinsection compound thing of the present invention can effectively prevent and treat the suckings pest such as resistance aphid, thrips, rice fulgorid and Bemisia tabaci, remarkably productive, to crop safety; (2) thiacloprid disinsection compound thing dust of the present invention is few, to the producer, user and Environmental security; (3) do not contain organic solvent in the present invention, environmental pollution is little, is convenient to accumulating and use; (4) preventive effect of the present invention is compared single dose and is had obvious synergistic effect, reduces dosage, alleviates pest resistance to insecticide and produces.

Embodiment:

Be described in further detail content of the present invention below in conjunction with embodiment, content mentioned in embodiment is not limitation of the invention, and material prescription is selected to suit measures to local conditions and on result without substantial impact.In these embodiments, unless otherwise indicated, all percentage is all weight percentage.

Embodiment 1:30% thiacloprid acarid nitrile water dispersion granula.

Take the former medicine 10% of thiacloprid, capillary 20%, spaonin powder 1%, sodium lignin sulfonate 5%, ammonium sulfate 5%, precipitated calcium carbonate 5%, above raw material is mixed, after stirring, obtains female powder through airslide disintegrating mill, by female powder with 2% polyvinylpyrrolidone mix, mend to 100% with kaolin, then granulation, oven dry, screening obtain 30% thiacloprid acarid nitrile water dispersion granula again.Through checking active constituent content to be thiacloprid 10%, capillary 20%, suspension Shuai≤75% Shui Fen≤2.5%, pH is 7.2, particle size range (225 ~ 800um)≤98%, Fen San≤85%, moistening Shi Jian≤90s, (sieve)≤98 by 75um, ()≤12ml after 1min, it is qualified to accelerate heat storage stability for persistent foamability in wet screening test.

30% thiacloprid acarid nitrile water dispersion granula of this embodiment is used for preventing and treating tea tree tea lesser leafhopper.In Sheng nymph beginning, dispenser phase, usage amount 60 grams of (active ingredient)/hectares, are watered even spraying, and after medicine, 3 days preventive effects are 99.8%; Contrast medicament 48% thiacloprid suspending agent usage amount 80 grams of (active ingredient)/hectares, 10% capillary suspending agent usage amount, 90 grams of (active ingredient)/hectares, adopt same method dispenser, after medicine, 3 days preventive effects are respectively 76.8% and 85.2%.

Embodiment 2:50% thiacloprid acarid nitrile water dispersion granula.

Take thiacloprid 20%, capillary 30%, pull open powder 3%, carboxymethyl cellulose 5%, carbonic hydroammonium 12%, white carbon 25%; Above raw material is mixed, after stirring, obtains female powder through airslide disintegrating mill, by female powder with 3% polyvinylpyrrolidone mix, then with soluble starch mend to 100%, then granulation, oven dry, screening obtain 50% thiacloprid acarid nitrile water dispersion granula.Through checking active constituent content to be thiacloprid 20%, capillary 30%, suspension Shuai≤75% Shui Fen≤2.5%, pH is 7.2, particle size range (225 ~ 800um)≤98%, Fen San≤85%, moistening Shi Jian≤90s, (sieve)≤98 by 75um, ()≤12ml after 1min, it is qualified to accelerate heat storage stability for persistent foamability in wet screening test.

50% thiacloprid acarid nitrile water dispersion granula of this embodiment is used for water prevention rice fulgorid.In the phase dispenser of rice fulgorid nymph beginning Sheng, usage amount 50 grams of (active ingredient)/hectares, are watered even spraying, and after medicine, 3 days preventive effects are 97.3%; Contrast medicament 48% thiacloprid suspending agent usage amount 80 grams of (active ingredient)/hectares, 10% capillary suspending agent usage amount, 90 grams of (active ingredient)/hectares, adopt same method dispenser, after medicine, 3 days preventive effects are respectively 67.1% and 86.8%.

Claims (1)

1. a preparation method for thiacloprid disinsection compound thing, is characterized in that, comprises the steps:

(1) thiacloprid 1 ~ 50%, capillary 6% ~ 80%, lignin 2% ~ 12%, wetting agent 1% ~ 6%, disintegrant 2% ~ 6%, tea oil 1% ~ 5%, tpn 1% ~ 5%, surplus are carrier; Except tea oil, other raw material mixes and obtains mixture;

(2) mixture is carried out obtaining female powder after ultramicro grinding through airslide disintegrating mill;

(3) the female powder obtained after ultramicro grinding is taken certain amount and put into revolving fluid bed;

(4) aqueous solution that revolving of unlatching fluid bed also slowly adds tea oil toward it carries out granulation;

(5) dry after granulation completes;

(6) shot-like particle of oven dry carried out sieve, namely obtain water dispersible granules after analytical control.