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
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[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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