CN106035323B - A kind of sustained releasing pesticide granule and preparation method thereof - Google Patents

A kind of sustained releasing pesticide granule and preparation method thereof Download PDF

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Publication number
CN106035323B
CN106035323B CN201610353235.8A CN201610353235A CN106035323B CN 106035323 B CN106035323 B CN 106035323B CN 201610353235 A CN201610353235 A CN 201610353235A CN 106035323 B CN106035323 B CN 106035323B
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layer
effective component
crosslinking agent
pesticide
material
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CN201610353235.8A
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CN106035323A (en
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苑立志
覃欢
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广西南宁农事帮农业科技服务有限公司
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Abstract

The present invention discloses a kind of sustained releasing pesticide granule and preparation method thereof, including the first layer effective component layer, second layer effective component layer and third layer effective component layer being arranged from the inside to the outside, the present invention is by using different crosslinking agents in different effective component layers, and it is equipped with the appropriate proportioning of each layer, promote or adjust the release of pesticide activity component, achievees the effect that quick-acting, middle effect and the long-acting prevention and treatment having both, kills pest and disease damage.

Description

A kind of sustained releasing pesticide granule and preparation method thereof

Technical field

The present invention relates to technical field of pesticide, especially a kind of sustained releasing pesticide granule and preparation method thereof.

Background technique

The raw medicine of pesticide generally cannot be used directly, it is necessary to which processing is configured to various types of preparations, could use.At present Maximum using earliest, dosage is pulvis, and since it can directly spread fertilizer over the fields or mix native use, work efficiency is high, does not have to water, particularly suitable for The mountain area of drought and water shortage or upper level and forest land use, but the disadvantage of pulvis is easy drift pollution environment, and pesticide is effective Utilization rate is low, and general only 20% pulvis is deposited on target organism, and in addition blade face adhesion is poor, is easily blown off or by rain Water washes away, and the drug effect phase is shorter.Therefore since the 1970s, the production and use of pulvis are on a declining curve.It takes And instead of be granule and various suspending agents.These dosage forms maintain the advantage that pulvis is easy to use, work efficiency is high, and overcome The low disadvantage of the easy drift pollution environment of pulvis, effective rate of utilization.

The preparation process of granule be selection have adsorption capacity, the satisfactory carrier granular of particle size range, as sand, Medical stone etc., be then dissolved in water or the pesticide application of organic solvent on the carrier particles, water or solvent volatilization Granula product.Granular pesticide can reduce times for spraying, mitigate peasant's labor intensity, improve the utilization of pesticidal active substance Rate, but the preparation method of traditional granular pesticide uses solvent, is easy to produce solvent contamination, and not degradable, it is also possible to meeting Cause soil hardening, and pesticide granules only wrap up one or two layers, drug effect duration also falls short of in the soil.

Authorization Notice No. is that the patent of invention of 102696586 B of CN discloses a kind of slow control property pesticide grain of tool and non-slow control The mixing granules agent of property pesticide grain.Pesticidal active substance is uniformly mixed with filler material, surfactant;The pesticide activity object Matter, filler material and surfactant in percentage by weight, pesticidal active substance be 1% ~ 20%, surfactant be 0.1% ~ 10%, surplus is clay, and the mixing granules agent of the pesticide grain had not only retained the original quick-acting of pesticide effective active, but also can improve the agriculture The physical and chemical stability of medicine effective active;But the mixing granules agent of the pesticide grain uses surfactant, may make to soil At solvent contamination, in addition, with package different-thickness clothing film and partially, coating is not sustained and quick-acting controls to reach between different layers System requires its technique harsher.

Summary of the invention

The present invention provides a kind of sustained releasing pesticide granule and preparation method thereof, this method can reduce the usage amount of pesticide, The pollution to environment is reduced, the number that peasant discharges pesticide is reduced.

To achieve the above object, the technical solution of the present invention is as follows:

A kind of sustained releasing pesticide granule, including be arranged from the inside to the outside first layer effective component layer, second layer effective component Layer and third layer effective component layer, in which:

The weight ratio of each component in first layer effective component layer are as follows: pesticide activity component A: crosslinking agent B: auxiliary material C=1:1 ~ 2:2~35;

The weight ratio of each component in second layer effective component layer are as follows: pesticide activity component D: crosslinking agent E: auxiliary material F=1: 1~3:2~50;

The weight ratio of each component in third layer effective component layer are as follows: pesticide activity component G: binder H: crosslinking agent I: auxiliary Expect J=1:3 ~ 6:0.35 ~ 0.75:2 ~ 50;

Wherein, pesticide activity component A and pesticide activity component D are same or different, pesticide activity component D and pesticide activity Ingredient G is identical or different;Auxiliary material C and auxiliary material F are same or different, and auxiliary material F and auxiliary material J are identical or different;Crosslinking agent B uses water Soluble macromolecular polymer, crosslinking agent E use cellulose or cellulosate.

Technical solution more preferably, first layer effective component layer are mainly made of following components by weight ratio: Pesticide activity component A: crosslinking agent B: auxiliary material C=1:1.2 ~ 1.5:10 ~ 15;

Second layer effective component layer is mainly made of following components by weight ratio: pesticide activity component D: crosslinking agent E: auxiliary material F=1:1.2 ~ 2:25 ~ 30;

The weight ratio of each component in third layer effective component layer are as follows: pesticide activity component G: binder H: crosslinking agent I: auxiliary Expect J=1:4:0.6:30 ~ 45.

Preferably, the weight ratio of the first layer effective component layer, second layer effective component layer, third layer effective component layer Example are as follows: first layer effective component layer second layer effective component layer: third layer effective component layer=1:0.8 ~ 10:0.8 ~ 10.

It is best that the crosslinking agent B, which uses polyvinylpyrrolidone,.

Preferably, the crosslinking agent E can be selected a kind of in sodium carboxymethylcellulose, hydroxyethyl cellulose and methylcellulose Or it is several.Wherein, the crosslinking agent E is best with sodium carboxymethylcellulose.

Preferably, in third layer effective component layer, the crosslinking agent I be borax, the binder H be dextrin, dextrin and The weight ratio of borax is 1:0.15.

Preferably, matcoveredn is also wrapped up outside the third layer effective component layer, the weight ratio of each component in protective layer Are as follows: binder K: crosslinking agent L: pigment: auxiliary material M=4:0.6:0.025:95.4;Wherein, the binder K is identical as binder H Or it is different, crosslinking agent L and crosslinking agent I are identical or different, and auxiliary material M and auxiliary material J are identical or different.

Above-described auxiliary material C, auxiliary material F, auxiliary material J and auxiliary material M, using the customary adjuvant for preparing pesticide, such as clay, hard charcoal Black, zeolite, kaolin, calcium carbonate, montmorillonite, clay etc..

Above-described binder K can use one of dextrin, polyamide;Crosslinking agent L can use boron One of sand, acrylic resin, epoxy resin.

Above-described pesticide activity component A, pesticide activity component D, pesticide activity component G, preferably include imidacloprid, thiophene Worm amine, Diacloden, thiacloprid, lythidathion, Nitenpyram, cartap, dimehypo, Cupric sulfate, spiral shell mite ethyl ester, etoxazole, fluorine worm One of nitrile, streptomysin, cyfloxylate, avermectin and hymexazol are a variety of.

The preparation method of above-described sustained releasing pesticide granule, comprising the following steps:

(1) preparation of first layer effective component layer: pesticide activity component A is uniformly mixed with crosslinking agent B, and auxiliary material is added Mixing A material is made in C;

(2) preparation of second layer effective component layer: pesticide activity component D is uniformly mixed with crosslinking agent E, and auxiliary material is added Mixing B material is made in F;

(3) preparation of third layer effective component layer: pesticide activity component G, binder H and crosslinking agent I are uniformly mixed, Auxiliary material J is added, mixing C material is made;

(4) mixing A material is put into granulation disc, opens granulation disc, water spray starts to be granulated, and heats after having particle appearance, temperature It is 70 ~ 90 DEG C, after mixing A material is completely formed particle and solidifies, mixing B material is added, adjusts heating temperature, temperature is 80 ~ 100 DEG C, after mixing B material is fully cured, mixing C material is continuously added, C material to be mixed is fully cured, obtains among sustained releasing pesticide granule Product, granulation terminate, and stop heating, and the moisture content of particle is kept to control in the range of 8 ~ 15% in granulation process;

(5) product among sustained releasing pesticide granule are dried to moisture content lower than 1.5%;

(6) it sieves, Control granularity is 2.0 ~ 5.0mm, obtains sustained releasing pesticide granule, weight after granularity rejected product is crushed It is new to be granulated.

Further, in the step (4), mixing C material is being added, after C material to be mixed is fully cured, then is spraying into one layer of guarantor Sheath mixture, keeping heating temperature is 80 ~ 100 DEG C, after layer mixture to be protected is fully cured, is obtained in sustained releasing pesticide granule Between product;The protective layer mixture is made of binder K, crosslinking agent L, pigment and auxiliary material M.

In procedure described above (4), first layer effective component can be sprayed in carrier granular, can also be directly prepared into solid Body particle.

The invention has the benefit that (1) is of the invention by using different crosslinking agents in different effective component layers, and It is equipped with the appropriate proportioning of each layer, to promote or adjust the release of pesticide activity component, reaches quick-acting, middle effect and long-acting has both Killing pest and disease damage effect;(2) present invention uses suitable water-soluble cross-linker, and additional addition is not necessarily in entire granulation process Organic solvent, surfactant are pre-dissolved, and only need to control suitable moisture content can be realized the solidification of crosslinking agent, to make Entire prilling is swift to operate, and critical control point is few, and quality stability is high, and does not add organic solvent, surfactant Soil will not be polluted, avoid soil and generate hardened phenomenon generation;(3) sustained-release pesticides particle of the invention is used Agent only need to be once administered, and granular pesticide can prevent and treat the acquisition time that demand extends pesticide by pest and disease damage, reach anti-in advance Worm, diseases prevention purpose, while reducing times for spraying, reduce labor cost;Pesticide use amount is reduced, is reduced to ring The pollution in border;(4) present invention can by imidacloprid, clothianidin, Diacloden, thiacloprid, lythidathion, dinotefuran, Nitenpyram, kill snout moth's larva Granule is made in the pesticide activity components such as pellet, dimehypo, Cupric sulfate, thiocyclam and hymexazol, has a wide range of application, and has extensive Market prospects.

Specific embodiment

The present invention provides a kind of sustained releasing pesticide granule, including be arranged from the inside to the outside first layer effective component layer, Two layers of effective component layer and third layer effective component layer, in which: the weight ratio of each component in first layer effective component layer are as follows: agriculture Medicine active components A: crosslinking agent B: auxiliary material C=1:1 ~ 2:2 ~ 35;The weight ratio of each component in second layer effective component layer are as follows: agriculture Medicine active constituent D: crosslinking agent E: auxiliary material F=1:1 ~ 3:2 ~ 50;The weight ratio of each component in third layer effective component layer are as follows: Pesticide activity component G: binder H: crosslinking agent I: auxiliary material J=1:3 ~ 6:0.35 ~ 0.75:2 ~ 50;Wherein, pesticide activity component A Same or different with pesticide activity component D, pesticide activity component D and pesticide activity component G are identical or different;Auxiliary material C with it is auxiliary Expect that F is same or different, auxiliary material F and auxiliary material J are identical or different;Crosslinking agent B uses water soluble polymer, crosslinking agent E Using cellulose or cellulosate.

Wherein, crosslinking agent B is preferably polyvinylpyrrolidone, and crosslinking agent B is preferably sodium carboxymethylcellulose, hydroxyl second It is base cellulose, gelatin, one or more of in xanthan gum.

The more preferred proportion of each component is in above-mentioned three-decker, and first layer effective component layer is mainly pressed by following components Weight is made: pesticide activity component A: crosslinking agent B: auxiliary material C=1:1.2 ~ 1.5:10 ~ 15;Second layer effective component layer master It to be made by weight ratio of following components: pesticide activity component D: crosslinking agent E: auxiliary material F=1:1.2 ~ 2:25 ~ 30;Third The weight ratio of each component in layer effective component layer are as follows: pesticide activity component G: binder H: crosslinking agent I: auxiliary material J=1:4: 0.6:30~45。

The present invention provides the optimum ratios of above-mentioned three-decker: first layer effective component layer, second layer effective component layer, The weight ratio of third layer effective component layer are as follows: first layer effective component layer second layer effective component layer: third layer effective component Layer=1:0.8 ~ 10:0.8 ~ 10.

In third layer effective component layer, the crosslinking agent I is preferably borax, and the binder H is preferably dextrin, dextrin Weight ratio with borax is 1:0.15.

Preferably to protect pesticide activity component not fall off during packaging and transport, in third layer effective component layer Matcoveredn is also wrapped up outside, the weight ratio of each component in protective layer are as follows: binder K: crosslinking agent L: pigment: auxiliary material M=4: 0.6:0.025:95.4;Wherein, binder K and binder H are identical or different, and crosslinking agent L and crosslinking agent I are identical or different, auxiliary Expect that M and auxiliary material J is identical or different.

Auxiliary material C, auxiliary material F, auxiliary material J and auxiliary material M of the present invention, using the customary adjuvant for preparing pesticide, such as clay, white Carbon black, zeolite, kaolin, precipitated calcium carbonate, montmorillonite, flyash, clay etc..

Binder K of the present invention can use one of dextrin, polyamide;Crosslinking agent L can be used One of borax, acrylic resin, epoxy resin.

Pesticide activity component A of the present invention, pesticide activity component D, pesticide activity component G, preferably include imidacloprid, Clothianidin, Diacloden, thiacloprid, lythidathion, Nitenpyram, cartap, dimehypo, Cupric sulfate, spiral shell mite ethyl ester, etoxazole, fluorine One of worm nitrile, streptomysin, cyfloxylate, avermectin and hymexazol are a variety of.

The specific embodiment of more specifically sustained releasing pesticide granule and preparation method thereof presented below, but guarantor of the invention Shield range is not limited to following embodiment.

Embodiment 1

First layer effective component layer: clothianidin 4kg, polyvinylpyrrolidone 4.8kg, kaolin and clay 126.4kg;The Two layers of effective component layer: Cupric sulfate 8kg, sodium carboxymethylcellulose 12kg, kaolin and clay 400kg;Third layer effective component Layer: Cupric sulfate 8kg, dextrin 32kg, borax 4.8kg, kaolin and clay 400kg.

Preparation method the following steps are included:

(1) preparation of first layer effective component layer: by the clothianidin and polyvinylpyrrolidone in first layer effective component It is uniformly mixed, kaolin and clay is added, mixing A material is made;

(2) preparation of second layer effective component layer: by the Cupric sulfate and sodium carboxymethylcellulose in second layer effective component It is uniformly mixed, kaolin and clay is added, mixing B material is made;

(3) preparation of third layer effective component layer: Cupric sulfate, dextrin and the borax in third layer effective component are stirred mixed It closes uniformly, kaolin and clay is added, mixing C material is made;

(4) mixing A material is put into granulation disc, opens granulation disc, water spray starts to be granulated, and heats after having particle appearance, temperature It is 70 ~ 90 DEG C, after mixing A material is completely formed particle and solidifies, mixing B material is added, adjusts heating temperature, temperature is 80 ~ 100 DEG C, after mixing B material is fully cured, mixing C material is continuously added, C material to be mixed is fully cured, obtains among sustained releasing pesticide granule Product, granulation terminate, and stop heating, and the moisture content of particle is kept to control in the range of 8 ~ 15% in granulation process;

(5) product among sustained releasing pesticide granule are dried to moisture content lower than 1.5%;

(6) it sieves, Control granularity is 2.0 ~ 5.0mm, obtains sustained releasing pesticide granule, weight after granularity rejected product is crushed It is new to be granulated.

Above-mentioned controlled release granular pesticide, medicine after 80 day preventive effect effect good to the control efficiency of aphid, leafhopper, plant hopper It is 93.5%, 110 days control efficiency are 91.8% after medicine, and to crops such as rice without phytotoxicity, in addition it is to sugarcane moth borer, rice two Changing snout moth's larva, yellow rice borer, rice leaf roller, rice thrips also has certain control efficiency, and soil occurs without hardened phenomenon during use.

Embodiment 2

First layer effective component layer: Diacloden 8kg, polyvinylpyrrolidone 12kg, kaolin and clay 176.1kg;The Two layers of effective component layer: Diacloden 2kg, cyfloxylate 6kg, sodium carboxymethylcellulose 12kg, kaolin and clay 280kg; Third layer effective component layer: cyfloxylate 9kg, dextrin 36kg, borax 5.4kg, kaolin, clay and gypsum 450kg;Protection Layer: borax 21g, dextrin 140g, pigment 1g, kaolin, clay and gypsum 3.3kg.

Preparation method the following steps are included:

(1) preparation of first layer effective component layer: by the Diacloden and polyvinylpyrrolidone in first layer effective component It is uniformly mixed, kaolin and clay is added, mixing A material is made;

(2) preparation of second layer effective component layer: by Diacloden, cyfloxylate and the carboxylic first in second layer effective component Base sodium cellulosate is uniformly mixed, and kaolin and clay is added, and mixing B material is made;

(3) preparation of third layer effective component layer: by Diacloden, cyfloxylate, the dextrin in third layer effective component It is uniformly mixed with borax, kaolin and clay is added, mixing C material is made;

(4) mixing A material is put into granulation disc, opens granulation disc, water spray starts to be granulated, and heats after having particle appearance, temperature It is 70 ~ 90 DEG C, after mixing A material is completely formed particle and solidifies, mixing B material is added, adjusts heating temperature, temperature is 80 ~ 100 DEG C, after mixing B material is fully cured, mixing C material is continuously added, C material to be mixed is fully cured, protective layer mixture is sprayed into, Kept for 80 ~ 100 DEG C of temperature, layer mixture to be protected is fully cured, and obtains product among sustained releasing pesticide granule, and granulation terminates, and stops Heating keeps the moisture content of particle to control in the range of 8 ~ 15% in granulation process;

(5) product among sustained releasing pesticide granule are dried to moisture content lower than 1.5%;

(6) it sieves, Control granularity is 2.0 ~ 5.0mm, obtains sustained releasing pesticide granule, weight after granularity rejected product is crushed It is new to be granulated.

Above-mentioned controlled release granular pesticide, it is good to the control efficiency of aphid, coleoptera, Semiptera, Homoptera and Lepidoptera, 80 days control efficiency to coleoptera, Semiptera, Homoptera and Lepidoptera are 93.0% after medicine.Prevention and treatment to aphid in 120 days after medicine Effect is 91.5%, to rice class, beet, rape, potato, cotton, Kidney bean, fruit tree, peanut, sunflower, Soybean and Other Crops without medicine Evil, in addition it also has preferable control efficiency to plant hopper, leafhopper, aleyrodid, and soil occurs without hardened phenomenon during use.

Embodiment 3

First layer effective component layer: Cupric sulfate 3kg, avermectin 33kg, polyvinylpyrrolidone 54kg, kaolin and viscous Native 180kg;Second layer effective component layer: Cupric sulfate 3kg, avermectin 33kg, hydroxyethyl cellulose 66kg, kaolin and clay 180kg;Third layer effective component layer: Cupric sulfate 4kg, avermectin 34kg, dextrin 114kg, borax 17.1kg, kaolin glue Soil and precipitated calcium carbonate 290.9kg.

Preparation method the following steps are included:

(1) preparation of first layer effective component layer: by Cupric sulfate, avermectin and the polyethylene in first layer effective component Pyrrolidones is uniformly mixed, and kaolin and clay is added, and mixing A material is made;

(2) preparation of second layer effective component layer: by Cupric sulfate, avermectin and the ethoxy in second layer effective component Cellulose is uniformly mixed, and kaolin and clay is added, and mixing B material is made;

(3) preparation of third layer effective component layer: by third layer effective component Cupric sulfate, avermectin, dextrin and Borax is uniformly mixed, and kaolin and clay is added, and mixing C material is made;

(4) mixing A material is put into granulation disc, opens granulation disc, water spray starts to be granulated, and heats, has after having particle appearance Grain heats after occurring, and temperature is 70 ~ 90 DEG C, and after mixing A material is completely formed particle and solidifies, mixing B material, adjustment heating temperature is added Degree, temperature are 80 ~ 100 DEG C, after mixing B material is fully cured, continuously add mixing C material, C material to be mixed is fully cured, must be sustained Product among granular pesticide, granulation terminate, and stop heating, and the moisture content of particle is kept to control 8 ~ 15% in granulation process In the range of;

(5) product among sustained releasing pesticide granule are dried to moisture content lower than 1.5%;

(6) it sieves, Control granularity is 2.0 ~ 5.0mm, obtains sustained releasing pesticide granule, weight after granularity rejected product is crushed It is new to be granulated.

Above-mentioned controlled release granular pesticide, good to the control efficiency of the snout moth's larva of rice, 80 days preventive effect effects are after medicine 94.5%, 100 days control efficiency are 89.9% after medicine, to crops such as sugarcane, rice without phytotoxicity, in addition its to rice-stem borer, Yellow rice borer, rice leaf roller, rice thrips, plant hopper, leafhopper also have certain control efficiency, and soil is sent out without hardened phenomenon during use It is raw.

Claims (9)

1. a kind of sustained releasing pesticide granule, including first layer effective component layer, the second layer effective component layer being arranged from the inside to the outside With third layer effective component layer, it is characterised in that:
The weight ratio of each component in first layer effective component layer are as follows: pesticide activity component A: crosslinking agent B: auxiliary material C=1:1 ~ 2:2 ~ 35;
The weight ratio of each component in second layer effective component layer are as follows: pesticide activity component D: crosslinking agent E: auxiliary material F=1:1 ~ 3: 2~50;
The weight ratio of each component in third layer effective component layer are as follows: pesticide activity component G: binder H: crosslinking agent I: auxiliary material J= 1:3~6:0.35~0.75:2~50;
Wherein, pesticide activity component A and pesticide activity component D are same or different, pesticide activity component D and pesticide activity component G is identical or different;Auxiliary material C and auxiliary material F are same or different, and auxiliary material F and auxiliary material J are identical or different;Crosslinking agent B is using water-soluble High molecular polymer, crosslinking agent E use cellulose or cellulosate;
The preparation method of sustained releasing pesticide granule, it is characterised in that the following steps are included:
(1) preparation of first layer effective component layer: pesticide activity component A is uniformly mixed with crosslinking agent B, and auxiliary material C, system is added A material must be mixed;
(2) preparation of second layer effective component layer: pesticide activity component D is uniformly mixed with crosslinking agent E, and auxiliary material F, system is added B material must be mixed;
(3) preparation of third layer effective component layer: pesticide activity component G, binder H and crosslinking agent I are uniformly mixed, and are added Mixing C material is made in auxiliary material J;
(4) it is granulated: putting into mixing A material in granulation disc, open granulation disc, spray water and start to be granulated, heated after having particle appearance, temperature Degree is 70 ~ 90 DEG C, and after mixing A material is completely formed particle and solidifies, mixing B material is added, adjusts heating temperature, temperature is 80 ~ 100 DEG C, after mixing B material is fully cured, mixing C material is continuously added, C material to be mixed is fully cured, obtains among sustained releasing pesticide granule Product, granulation terminate, and stop heating, and the moisture content of particle is kept to control in the range of 8 ~ 15% in above-mentioned granulation process;
(5) product among sustained releasing pesticide granule are dried to moisture content lower than 1.5%;
(6) it sieves, Control granularity is 2.0 ~ 5.0mm, obtains sustained releasing pesticide granule, granularity rejected product is made again after being crushed Grain.
2. sustained releasing pesticide granule according to claim 1, it is characterised in that:
First layer effective component layer is mainly made of following components by weight ratio: pesticide activity component A: crosslinking agent B: auxiliary material C=1:1.2~1.5:10~15;
Second layer effective component layer is mainly made of following components by weight ratio: pesticide activity component D: crosslinking agent E: auxiliary Expect F=1:1.2 ~ 2:25 ~ 30;
The weight ratio of each component in third layer effective component layer are as follows: pesticide activity component G: binder H: crosslinking agent I: auxiliary material J= 1:4: 0.6:30~45。
3. sustained releasing pesticide granule according to claim 1 or 2, it is characterised in that:
The first layer effective component layer, second layer effective component layer, third layer effective component layer weight ratio are as follows: first layer Effective component layer second layer effective component layer: third layer effective component layer=1:0.8 ~ 10:0.8 ~ 10.
4. sustained releasing pesticide granule according to claim 1 or 2, it is characterised in that:
The crosslinking agent B is polyvinylpyrrolidone.
5. sustained releasing pesticide granule according to claim 1 or 2, it is characterised in that:
The crosslinking agent E is one or more of in sodium carboxymethylcellulose, hydroxyethyl cellulose and methylcellulose.
6. sustained releasing pesticide granule according to claim 5, it is characterised in that:
The crosslinking agent E is sodium carboxymethylcellulose.
7. sustained releasing pesticide granule according to claim 1 or 2, it is characterised in that:
Matcoveredn is also wrapped up outside the third layer effective component layer, the weight ratio of each component in protective layer are as follows: binder K: Crosslinking agent L: pigment: auxiliary material M=4:0.6:0.025:95.4;Wherein, the binder K and binder H are identical or different, crosslinking Agent L and crosslinking agent I are identical or different, and auxiliary material M and auxiliary material J are identical or different.
8. sustained releasing pesticide granule according to claim 1 or 2, it is characterised in that:
In third layer effective component layer, the crosslinking agent I is borax, and the binder H is dextrin, the weight ratio of dextrin and borax For 1:0.15.
9. the preparation method of sustained releasing pesticide granule according to claim 1, it is characterised in that:
In the step (4), mixing C material is being added, after C material to be mixed is fully cured, then is spraying into protective layer mixture, protects Holding heating temperature is 80 ~ 100 DEG C, after layer mixture to be protected is fully cured, and obtains product among sustained releasing pesticide granule;The protection Layer mixture is made of binder K, crosslinking agent L, pigment and auxiliary material M.
CN201610353235.8A 2016-05-25 2016-05-25 A kind of sustained releasing pesticide granule and preparation method thereof CN106035323B (en)

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2643222B2 (en) * 1988-02-03 1997-08-20 エーザイ株式会社 Multilayer granules
CN101027978A (en) * 2007-03-27 2007-09-05 中国科学院等离子体物理研究所 Floating microcapsule carrier under friendly environment and its production
CN102696587B (en) * 2012-06-15 2014-03-26 河南好年景生物发展有限公司 Compound controlled-release granular pesticide preparation and preparation method thereof
CN102696586B (en) * 2012-06-15 2014-03-12 河南好年景生物发展有限公司 Mixed granular preparation with slow/controlled-release pesticide granules and non-slow/controlled-release pesticide granules
CN104365595A (en) * 2014-11-27 2015-02-25 江南大学 Pesticide microcapsules produced by layer-by-layer self-assembly

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