CN101379994B

CN101379994B - Pesticides of water dispersion granule containing buprofezin

Info

Publication number: CN101379994B
Application number: CN2008101462233A
Authority: CN
Inventors: 张少武
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-06
Filing date: 2008-08-06
Publication date: 2011-08-10
Anticipated expiration: 2028-08-06
Also published as: CN101379994A

Abstract

The invention relates to a pesticide of water dispersible granules containing Buprofezin, and belongs to the pesticide of the field of plant protection. The pesticide has the active ingredient of Buprofezin with the mass percent of 10-80%, and the optimal ratio is 20-50% according to the experimental formulation screening. Except for the active ingredient, the pesticide also comprises 25-80% of filler, 25-80% of carrier, 1-10% of humectant, 5-15% of dispersant, 0-10% of disintegrant, 0.1-3% of adhesive and 0-5% of stabilizing agent. Compared with missible oil and wettable powder, the pesticide is safer, more effective and environment-friendly, and has lower cost.

Description

The insecticide that contains the water dispersion granule of Buprofezin

Technical field:

The invention belongs to technical field of pesticide, relate to a kind of insecticide that contains the water dispersion granule of Buprofezin, be used to prevent and treat the insects such as plant hopper, leafhopper, aleyrodid and coccid of Semiptera insect.

Background technology:

Buprofezin is mainly in the majority with wetting powder and missible oil at present, and fineness is thin especially but wetting powder is main, has a large amount of dust in process of production and occurs, and the people is worked the mischief easily, and environment is also easily polluted.Missible oil is the formulation of present usage amount maximum, its primary solvent is from dimethylbenzene, toluene etc., because the rise in price of oil in recent years, also brought no small impact for the production of missible oil, cause the increasing of cost, directly cause the increasing of peasant's drug cost, moreover owing to exist a large amount of dimethylbenzene in production, transportation and storage process, also to bring many inconvenience in the missible oil.Wetting powder and missible oil because the shortcoming of himself has brought the peasant in use, cause the generation of poisoning and residual increase respectively easily, and is also of common occurrence about the report of this type of thing.

Relative water dispersion granule, be that wetting powder or suspending agent are a granulated into water dispersion granule again, the key technology of processing is to prevent that powder from becoming coarse dust at granulation process medium silt flocculation again, do not accompany powder in the product, good fluidity, easy to use, environmental pollution is little, to the person poultry safety.

At wetting powder, missible oil since its technology with select the different of auxiliary agent for use, greatly reduce pollution, and, improved drug effect crop and person poultry safety to environment, be easy to transportation simultaneously and store.

Summary of the invention:

Buprofezin has another name called buprofezin, except that process for preparation of benzoylurea compounds has identical character mechanism, has distinctive insecticidal properties:

1, insect being had very strong selectivity, plant hopper, leafhopper, aleyrodid and the coccid of Semiptera insect had outstanding insecticidal effect, to natural enemies security, is more satisfactory in a present integrated pest control pesticide species.

2, insect is had the very strong stomach toxicity and the mechanism of tagging, crop is had certain permeability, except root system, can be absorbed, simultaneously ovum is had the double effect of controlling by each position of paddy rice.The drug effect performance is slow, generally occurs the peak period of desinsection later at 3 to 4 days, thereby has prolonged the lasting period of drug effect indirectly.

The object of the present invention is to provide a kind of Buprofezin water dispersion granule little, that stability is high, the lasting period is long that pollutes.

Main component of the present invention is a Buprofezin, also comprise wetting agent, dispersant, disintegrant, adhesive, stabilizing agent, filler and carrier in the composition, its percentage by weight is as follows: Buprofezin 10%～80%, filler 20%～80%, wetting agent 1%～10%, dispersant 5%～15%, disintegrant 0%～10%, adhesive 0.1%～3%, stabilizing agent 0%～5%.

Wetting agent of the present invention, dispersant are any among Glycerin, mixed triester with caprylic acid capric acid, Crodaret, F68, PEG600, Tween80, Span20, the Span80 etc.

Described disintegrant is selected from one or more in bentonite, ammonium sulfate, the aluminium chloride.

Described adhesive is selected from one or more in polyethylene glycol, polyvinyl alcohol, the polyvinylpyrrolidone.

Described stabilizing agent is selected from one or more in sodium hydrogen phosphate, succinic acid, the borax.

Filler of the present invention is any in glucose, lactose, sucrose or the soluble starch.

Described carrier is selected from one or more in kaolin, diatomite, the white carbon.

The preparation method of the Buprofezin water dispersion granule that the present invention proposes, concrete steps are as follows:

A kind of is that ratio takes by weighing Buprofezin, wetting agent, dispersant, disintegrant and filler according to required weight, with water is medium, and porphyrize in sand mill is made suspending agent, carry out granulation then, its method has spray drying granulation, thermopnore drying-granulating, freeze drying granulation; Another kind is that ratio takes by weighing Buprofezin, wetting agent, dispersant, disintegrant and filler one and reinstates comminution by gas stream or ultra-fine grinding according to required weight, make wetting powder, carry out granulation then, its method has rotary table granulation, extruder grain, mixed at high speed granulation, thermopnore granulation and compression granulation etc.

The temperature of drying described in the present invention is 55 ℃～80 ℃.

Specific embodiment:

Embodiment 1:

Take by weighing the former medicine 10g of Buprofezin, phenethyl phenol polyethenoxy ether formaldehyde 5g, sodium lignin sulfonate 15g, precipitated calcium carbonate 15g, sodium hydrogen phosphate 5g, kaolin 48g presses conventional method with it and mixes, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, female powder and 2g polyvinylpyrrolidone are mixed, replenish with soluble starch, granulation then, oven dry obtain 10% Buprofezin water dispersion granule through sieve.Through the check effective ingredient is that content is 10%, and moisture≤2.5%, pH are 7.1, and 75 μ m sieve is passed through in screening, suspensibility 〉=65%, and lasting row (the 1min)≤10ml that bubbles, wettability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.The dosage that is used to prevent and treat the paddy rice aleyrodid in force is 700～875mg/kg, and control efficiency is 79.56%～83.23%.

Embodiment 2:

Take by weighing the former medicine 20g of Buprofezin, phenethyl phenol polyethenoxy ether formaldehyde 5g, sodium lignin sulfonate 10g, bentonite 5g, sodium hydrogen phosphate 5g, white carbon 53g presses conventional method with it and mixes, after stirring, obtain female powder through the airslide disintegrating mill pulverizing, female powder and 2g polyvinylpyrrolidone are mixed, replenish with soluble starch, granulation then, oven dry obtain 20% Buprofezin water dispersion granule through sieve.Through the check effective ingredient is that content is 20%, and moisture≤2.5%, PH are 7.1, and 75 μ m sieve is passed through in screening, suspensibility 〉=65%, and lasting row (the 1min)≤10ml that bubbles, wettability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.The dosage that is used to prevent and treat the paddy rice aleyrodid in force is 700～875mg/kg, and control efficiency is 89.56%～93.23%.

Embodiment 3:

Take by weighing the former medicine 50g of Buprofezin, ethoxylated dodecyl alcohol 8g, sodium lignin sulfonate 8g, ammonium sulfate 8g, succinic acid 2g, diatomite 21g, after it is mixed, pulverize through airslide disintegrating mill and to obtain female powder, the polyethylene glycol of female powder and 3g is mixed, granulation then, dry and obtain 50% Buprofezin water dispersion granule through sieve.Through the check effective ingredient is that content is 50%, and moisture≤2.5%, PH are 7.3, and 75 μ m sieve is passed through in screening, suspensibility 〉=65%, and lasting row (the 1min)≤10ml that bubbles, wettability≤1min, dust≤3.0%, the acceleration heat storage stability is qualified.The dosage that is used to prevent and treat the paddy rice aleyrodid in force is 700～875mg/kg, and the effect of control is 93.45%～96.67%.

Claims

1. insecticide that contains the water dispersion granule of Buprofezin, it is characterized in that: insecticide contains the former medicine 20g of Buprofezin, phenethyl phenol polyethenoxy ether formaldehyde 5g, sodium lignin sulfonate 10g, bentonite 5g, sodium hydrogen phosphate 5g, white carbon 53g, it is pressed conventional method mixes, after stirring, obtain female powder, female powder and 2g polyvinylpyrrolidone are mixed through the airslide disintegrating mill pulverizing, replenish with soluble starch, granulation then, oven dry obtain 20% Buprofezin water dispersion granule through sieve again.