Tribenuron-methyl soluble water-dispersible granule and preparation method thereof

Abstract

The invention discloses a tribenuron-methyl soluble water-dispersible granule and a preparation method thereof, belonging to the field of agricultural weeding technology. The tribenuron-methyl soluble water-dispersible granule comprises, by mass, 15 to 90% of tribenuron-methyl technical, 1 to 10% of a dispersing agent, 1 to 7% of a salt forming agent, 1 to 5% of a disintegrating agent and 0 to 3% of water, with the balance being a filling material. The preparation method for the water-dispersible granule has the advantages of simplicity, no increase of production cost, equipment or special production technology, and small pollution to the environment; through usage of the specific salt forming agent, the water-dispersible granule has the advantages of rapid dispersion, uniform dissolving in water, a small usage amount, good weeding effect, small phytotoxicity, high crop yield (higher than crop yield of a 75% dry suspension which is prepared by the DuPond Company of America and is called as a tribenuron methyl wettable powder), low cost, low packaging requirements, an environment-friendly dosage form, convenient usage and suitability for large-scale popularization.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a tribenuron-methyl soluble water granule and a preparation method thereof. Background technique [0002] Tribesulfuron chemical name: 2-[4-methoxy-6-methyl-1,3,5-triazin-2-yl(methyl)carbamoylsulfonyl]benzoic acid or methyl ester is sulfonate A ureide systemic conduction type post-emergent selective herbicide. After treatment, the stems and leaves can be absorbed by the stems, leaves and roots of weeds. And it conducts in the body, inhibits the biosynthesis of valine and isoleucine by hindering acetolactate synthase, prevents cell division, and causes weeds to die. Dicotyledonous weeds chickweed, shepherd's purse, wheat bottle grass, Maijiagong, ion grass, pig's scorpion, broken rice shepherd's head, Bugweed, Polygonum curcumulus, etc. are sensitive to tribenuron-methyl, and Zeqi, Popona, etc. are moderate sensitive. 10-14 days after spraying, it was observed that the we...

AI Technical Summary

Problems solved by technology

[0004] Water granules cannot disintegrate and dissolve quickly after entering water, and the speed is slow. Secondary dissolution is required to disperse to form a granular dosage form of suspension. The utilization rate of active ingredients is low. Generally, the utilization rate of active ingredients is about 70%.

Patent CN200810103821 provides a kind of Trisulfuron-methyl water granule and its preparation method. The suspension rate of the product is low, and it is unevenly dispersed in the diluted aqueous solution. Soluble powder and its preparation method require the original drug of tribenuron-methyl to be reacted into organic salts first, and a large amount of solvents such as dichloroethane are required for production, which is highly toxic and complicated in the production process, which aggravates environmental pollution and increases production costs, and CN02132891 is The finished powder preparation is equivalent to wettable powder in physical state

In addition to herbicides containing tribenuron-methyl, there is no dosage form with a higher utilization rate of active ingredients

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