A kind of quinclorac solid preparation and preparation method thereof

A technology of quinclorac and solid preparations, applied in the field of pesticides, can solve the problems of herbicide dosage and application operation restrictions, failure to achieve pest and weed control effects, poor weed control effects, etc., to achieve the goal of preventing and controlling rice fields Barnyard grass has good medicinal effect, is not easy to local phytotoxicity, and dissolves quickly

Active Publication Date: 2020-08-14
DALIAN RENBANG CHEM
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mixed use of different pesticide varieties is a common method to prevent and control agricultural diseases, insect pests and weeds. However, the properties and efficacy of different pesticides are not the same. , either cannot control specific pests and weeds well, fail to achieve the ideal control effect of pests and weeds, or cause phytotoxicity to current crops or even subsequent crops
In the prior art, although a single agent of quinclorac herbicides can prevent and control weeds in a targeted manner, there are strict restrictions on the amount of herbicides and application operations. If the amount is improper or the application is uneven , it is easy to cause poor weed control effect or cause phytotoxicity to current crops or even subsequent crops

Method used

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  • A kind of quinclorac solid preparation and preparation method thereof

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preparation example Construction

[0048] The present invention provides the preparation method of quinclorac solid preparation described in above-mentioned technical scheme, comprises the following steps:

[0049] (1) quinclorac, synergist, thickener, wetting agent, dispersant and filler are mixed to obtain a mixed material;

[0050] (2) Pulverizing and mixing the mixed material obtained in the step (1) to obtain a solid preparation of quinclorac.

[0051]The invention mixes quinclorac, synergist, thickener, wetting agent, dispersant and filler to obtain a mixed material. In the present invention, there are no special requirements on the mixing method, mixing equipment and feeding order of the above components, and the mixing technical solutions well known to those skilled in the art can be used. In the present invention, the quinclorac, synergist, thickener, wetting agent, dispersant and filler are preferably mixed using a double-helical cone mixer. In the present invention, the mixing time is preferably 0....

Embodiment 1

[0057] Preparation of 30% quinclorac solid preparation

[0058] With quinclorac former medicine (content 85%) 350kg, synergist 60kg, sodium carboxymethylcellulose 20kg, sodium lauryl sulfate 20kg, sodium lignosulfonate 40kg, white carbon black 60kg and diatomite Put 450kg into a double-helix conical mixer and mix for 0.5h to obtain the mixed material. Then, under the conditions of 8.5MPa and 5000r / min, the mixed material is pulverized with a fluidized bed jet mill, and then stirred and mixed by a gravity-free mixer for 1h , to obtain 30% quinclorac solid preparation.

Embodiment 2

[0060] Preparation of 30% quinclorac sodium salt solid preparation

[0061] With quinclorac sodium salt (content 73%) 410kg, synergist 80kg, polyvinyl alcohol 20kg, alkyl succinic acid sulfonate 45kg, sodium methylene dinaphthalene sulfonate 50kg, light calcium carbonate 70kg and Put 325kg of kaolin into a double-helix conical mixer, and mix for 1 hour to obtain a mixed material. Then, under the conditions of 9.5MPa and 3000r / min, the mixed material is pulverized with a fluidized bed jet mill, and then stirred and mixed by a gravity-free mixer. After 0.5h, a 30% solid preparation of quinclorac sodium salt was obtained.

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Abstract

The invention provides a quinclorac solid preparation. The quinclorac solid preparation comprises 30-70wt% of quinclorac, 2-10wt% of a synergist, 1-3wt% of a thickener, 2-8wt% of a wetting agent, 2-10wt% of a dispersant, and the balance of a filler. The quinclorac solid preparation is obtained through the steps of mixing all above components and crushing. The quinclorac solid preparation prepared in the invention has the advantages of short wetting time, high suspension rate, easy spray, uniform dispersion, difficult generation of local phytotoxicity in practical use; and the quinclorac solid preparation also has the advantages of small dosage, no phytotoxicity to crops, and environmental protection on the basis of meeting of crop weed injury control requirements.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a solid preparation of quinclorac and a preparation method thereof. Background technique [0002] Quinclorac is a special selective herbicide for controlling barnyardgrass in paddy fields. It is a hormone-type quinoline carboxylic acid herbicide. It is mainly used for controlling barnyardgrass and has a long application period. It is effective in the 1st to 7th leaf stages. The symptoms of weed poisoning are similar to the symptoms of auxin substances. The young leaves of the damaged barnyardgrass will appear slightly chlorotic, and the leaves will appear longitudinal stripes and bend. The typical symptoms of the damaged seedlings are green onion seedlings appearing in the seedlings, and the leaf color is relatively normal; the new leaves cannot be drawn out due to the healing of the upper tissue, and the stems can be peeled off, and the new leaves can be seen curling inside. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/42A01N25/12A01P13/00
Inventor 刘子喆牟广
Owner DALIAN RENBANG CHEM
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