CN101803597A - 40-percent benazolin and effective haloxyfop water dispersible granule - Google Patents

Abstract

The invention discloses a 40-percent benazolin and effective haloxyfop water dispersible granule, which is an environment-friendly weedicide with quick-response and persistence. A preparation method of the 40 percent benazolin and effective haloxyfop water dispersible granule comprises the following steps of: firstly absorbing the effective haloxyfop by using white carbon black as a carrier; adding a benazolin original medicine and various auxiliary agents; pulverizing the mixture by an air-current pulverizer, moistening the powder with the water evenly stirring, pelletizing in a pelletizer and drying to obtain a product. The preparation process has the advantages of no need of special apparatuses, convenient and simple operation, low preparation process, stable efficiency prevention, wide insecticidal spectrum, little environment pollution and the like.

Description

40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule

Technical field

The present invention relates to technical field of pesticide, particularly relate to a kind of weed killer herbicide 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule.

Background technology

Water dispersible granules is the novel form by Switzerland vapour Ba-Jia Ji company succeeded in developing in the eighties in 20th century.International agricultural chemicals federation of association (GIFAP) is defined as it: the granule that use disintegration and dispersion back in water.Water dispersible granules mainly is made up of pesticide active ingredient, carrier, wetting agent, dispersant, disintegrant, binding agent and stabilizing agent etc., and disintegration rapidly, dispersion after the entry form the higher suspension dispersion.

In a sense, water dispersible granules is the fine finishining on wetting powder or aqueous suspension agent basis.Because it has compared high-definition characteristic with conventional dosage forms, therefore quite favored.

(1) water dispersible granules has adaptability widely.It at first is adaptation to pesticide species, nearly all wetting powder and aqueous suspension agent product can convert this kind formulation to, low for some fusing points, pulverize difficulty, be not easy to make wetting powder and relatively poor and can't make the pesticide species of aqueous suspension agent at water stability, water dispersible granules then has unique use value; Secondly, be adaptation to formulation content, this formulation has overcome the restraining factors of conventional dosage forms to formulation content, can be processed into the water-dispersible granules kind of many high-loads.

(2) water dispersible granules has good matching to the super-high-efficient agricultural chemicals.Along with the continuous progress of people to the reactive compound triage techniques, emerge a collection of pesticide new variety with superpower activity, because mostly strand is long, active function groups is bigger for they, they are made missible oil become difficult all the more, therefore must walk the new road of solid pesticide processing, the drug effect of sufficiently and reasonably bringing into play these kinds needs formulation and the process technology that adapts with it, and this needs of water dispersible granules positive adaptation.

Present many super-high-efficient agricultural chemicals, every mu of consumption (active ingredient) have only several grams even to surpass a gram, few consumption like this, if again but they are processed into low concentration wet-milling or aqueous suspension agent product, very uneconomical.

(3) the water-dispersible grain agent producing process has diversity.That adopts at present usually has extruder grain, the granulation of sulfuration bed, disk granulation, a mist projection granulating etc., and process choice is fully according to the physical and chemical performance of process agricultural chemicals, the machining process route of definite the best.

(4) water dispersible granules is environmentally friendly.The pollution of current chemical pesticide has become a serious social concern, in biopesticide today of substituting chemical pesticide fully also, how to reduce the pollution of chemical pesticide to environment to greatest extent, becomes very urgent.

Water dispersible granules has the not available unique advantage of conventional dosage forms: do not have dust from flying, reduced the pollution to environment, to operator's safety, and can make that the toxic articles kind is low to be poisoned; Compare with suspending agent with wetting powder, the active constituent content height, the product relative density is big, and volume is little, is convenient to packing, stores and transportation; Bin stability and physical and chemical stability are better, and particularly to unsettled agricultural chemicals in water, it is better than suspending agent to make this formulation; The disintegration rate of particle is fast, and particle one touches water can be immediately by moistening, and disintegration rapidly in the process that sinks under the water; Particle after the disintegration, is dispersed into minimum particulate very soon in water, disintegration is sieved through 325 order wet methods after stirring, and residue is not more than 0.3% on the sieve; Suspension stability is better, and the soup for preparing did not use up the same day, can suspend again through stirring in second day, does not influence drug effect; The particle that is dispersed in the liquid only needs to stir a little, and tiny particulate can be dispersed in the liquid well, has sprayed still up to soup to keep uniformity.

Benazolin, English general benazolin-ethyl by name, trade name has Gao Teke, ethyl ester etc.Plant absorbs by blade after the dispenser, and transporting is to the whole plants body, and the mode of action is similar with Vi par, and just the drug effect performance slowly, sensitive plant is subjected to growth retardation behind the medicine, and the blade deadlock is green, thicken warp, new leave distortion, internode shortens, and is last dead, similar to the hormone herbicide symptom.In the drug resistance plant corpus, be degraded into the non-activity material, to crop safeties such as rape, wheat class, clovers.It is a kind of post-emergence herbicide of preventing and kill off rape field broad leaved weed and other dry crop field broad leaved weed, weeds such as main control chickweed, year chickweed, clearvers, Stellaria alsine Grim., its feature is that not only multiple broad leaved weed is had higher preventive effect, what is more important has higher safety to working as stubble and succession crop, be an outstanding herbicide used in rape field, but this medicament is invalid to grassy weed.The efficient haloxyfop-methyl spirit, English general haloxyfop-R-methyl by name, trade name has smart cover grass energy, the spirit of high-effective microorganism fluorine pyrrole second grass, haloxyfop-r-methyl etc., cauline leaf can be absorbed by the leaf of grass family class grass after handling very soon, conduct to whole plant, suppress the plant meristematic tissue and kill dogstail.The medicament that sprinkling falls into soil is easily absorbed by root, also can play and kill grass effect, average 55 days of half life period in soil.Compare with cover grass energy, haloxyfop-r-methyl is structurally with the ethoxyethyl in the methyl substituted cover grass energy; And owing to the a-carbon of propionic acid in the cover grass energy structure is asymmetric carbon atom, so have R and two kinds of optical isomers of S, wherein the S body does not have activity of weeding, and haloxyfop-r-methyl is highly finished product (R body) of having removed non-active portion (S body).It is active higher than cover grass energy under the Isodose, and efficacy stability is subjected to adverse environment condition influence such as low temperature, rainwater few.Rainfall in one hour is very little to the drug effect influence behind the medicine.Divide evil, the annual and perennial standing grain herbaceous weed at heading initial stage to arriving behind the seedling, good preventive effect is arranged, invalid to broadleaved herb and nutgrass flatsedge.

Benazolin and efficient haloxyfop-methyl spirit are used with, make composite dose, not only have to enlarge and kill grass spectrum, disposable effect of preventing and kill off rape field weed, synergy, delaying drug resistance, but also can remedy the deficiency of two single agent, become the outstanding weed killer herbicide that an existing quick-acting has lasting effect again.

By in October, 2009, domesticly registered 2 benazolin efficient haloxyfop-methyl missible oils altogether, its content is 20%, though composite dose of product of this two benazolin efficient haloxyfop-methyls spirits has above-mentioned advantage, but aspect formulation, there is wretched insufficiency, the missible oil formulation exists in a large number with an organic solvent, waste industrial chemicals, serious environment pollution, inflammable and explosive, produce, transport uneasy congruent shortcoming, and the active constituent content of product is lower, only is 20%.

Up to the present, do not see the research report of relevant 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule both at home and abroad as yet.

Summary of the invention

The objective of the invention is to overcome the deficiency of existing product, the weed killer herbicide that provides a kind of environmentally friendly, existing quick-acting to have lasting effect again: benazolin and efficient haloxyfop-methyl spirit complex preparation---40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule.

The component and the quality percentage composition thereof of 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule are as follows:

Benazolin 32%

Efficient haloxyfop-methyl spirit 8%

Wetting agent K12 2%

Dispersant sodium lignin sulfonate 10%

Disintegrant ammonium sulfate 5%

Carrier white carbon 8%

Carrier kaolin complements to 100%

K12 is a lauryl sodium sulfate, is agricultural chemicals usual auxiliaries, wetting agent.

The production technology of the present invention's 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule is as follows:

Earlier with the spirit of carrier white carbon absorption efficient haloxyfop-methyl; add the former medicine of benazolin and each auxiliary agent then; pulverize by airslide disintegrating mill; pulverize the water-wet of back adding quality of material 18%; stir then; in comminutor, granulate, granulate to be placed in 54 ± 1 ℃ of baking ovens and dried by the fire 3 hours, promptly obtain 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule product.

Description of drawings

Fig. 1 is the technological process of production schematic diagram of 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule

Advantage of the present invention is: (1) formulation advanced person, water dispersible granules is environmentally friendly green formulation, produce 1 ton of 20% benazolin haloxyfop-r-methyl missible oil and need 0.7 ton of the organic solvent such as toluene, dimethylbenzene, need not organic solvent and produce 40% benazolin effective haloxyfop water dispersible granule, greatly reduced to the harmful organic solvent of environment dispensing. (2) save cost, 40% benazolin effective haloxyfop water dispersible granule is compared with 20% benazolin haloxyfop-r-methyl missible oil, can save about 7000 yuan/tons of costs, on the other hand on packaging material, be not subjected to the restriction of organic solvent, the material range of choice is wide, thereby, can reduce part packing cost expense. (3) preventive effect is stable, and the herbicide spectrum enlarges, and successful is better than single dose, can disposable Controlling Weeds in Rape Fields field weed (concrete data are seen embodiment). (4) preparation technology does not need special installation, and is easy and simple to handle, is easy to promote.

Embodiment

Prepare 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule by said components, content and technology and carry out following experiment:

40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule is prevented and kill off the field efficacy experiment of rape field weed, the result shows: 800 times of liquid of 40% benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule are handled has preventive effect preferably to rape field annual weed, the preventive effect of 15-30d maintains between the 85.62%-89.58% behind the medicine, and preventive effect is remarkable.Medicament is in application, and smell significantly less than contrast missible oil, has reduced the pollution to environment.

Claims (1)

1. benazolin efficient haloxyfop-methyl Lingshui Spring dispersible granule is characterized in that the component of this water dispersible granules and quality percentage composition thereof are as follows:

Benazolin 32%

Efficient haloxyfop-methyl spirit 8%

Wetting agent K12 2%

Dispersant sodium lignin sulfonate 10%

Disintegrant ammonium sulfate 5%

Carrier white carbon 8%

Carrier kaolin complements to 100%

K12 is a lauryl sodium sulfate.

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