7 results about "Metolachlor" patented technology

The invention discloses a method for preparing a chiral amine compound through asymmetric hydrogenation of ruthenium catalyzed imine. The chiral ruthenium catalyst is a chiral metal ruthenium complex prepared by reacting metal ruthenium salt with a chiral phosphine-phosphoramidite ester ligand and chiral diamine in a solvent and carrying out column chromatography. Compared with other chiral amine synthesis methods, the method provided by the invention has the characteristics of cheap catalyst, easy preparation of chiral ligand, mild reaction conditions, simple operation, high yield and enantioselectivity and the like, and can be applied to large-scale preparation of chiral amine compounds. The method is also suitable for synthesis of the key intermediate of the herbicide (S)-metolachlor, the yield can reach 92%, the enantioselectivity can reach 90%, and the method has good industrial application prospects.

This utility model relates to the field of pesticide production technology, specifically to a device for preparing a compound suspension of propyzamide and metolachlor, comprising a mixing tank, a sealing cover fixedly connected to the upper end of the mixing tank, and a stirring assembly provided on the surface of the sealing cover. The stirring assembly includes a servo motor, a first bevel gear, a stirring frame, a connecting shaft, a second bevel gear, a first stirring blade, a stirring shaft, a third bevel gear, and a second stirring blade. A device housing is fixedly connected to the upper surface of the sealing cover, and a feed chute is provided on the left side of the device housing. Viewing windows are provided on both the front and rear sides of the sealing cover. Through the cooperation of the servo motor, the first bevel gear, the second bevel gear, the third bevel gear, the stirring frame, and the stirring shaft, the first and second stirring blades are driven to rotate in opposite directions, preventing the pesticide solution from rotating in the same direction, facilitating rapid dispersion of the internal suspension, and effectively improving the mixing efficiency and mixing effect of the pesticide solution.

This invention relates to the application of a stabilizer for preventing or inhibiting discoloration in amide herbicide formulations and the herbicide itself, belonging to the field of pesticide formulation technology. The stabilizer is epichlorohydrin and / or BHT; the application involves using the stabilizer in amide herbicide formulations to prevent or inhibit discoloration. The amide technical grade is one or more of acetochlor, metolachlor, butachlor, and propachlor. The amide herbicide comprises, by mass fraction: 20%–90% amide technical grade, 3%–30% emulsifier, 0.1%–2% stabilizer, and 1%–75% solvent. This invention significantly improves color stability: epichlorohydrin and BHT effectively inhibit the oxidative discoloration process of amide herbicides, allowing the technical grade to maintain a golden-yellow appearance during storage under light, preventing it from turning red or purplish-red. Maintaining the integrity of efficacy: Epichlorohydrin and BHT act only on the oxidation pathway of impurities and do not interfere with the main active ingredients of amide herbicides (such as acetochlor and butachlor), ensuring that the weeding effect is not affected.

This invention belongs to the field of pesticide formulation technology and provides a herbicidal extrusion floating granule and its preparation method. The herbicidal extrusion floating granule comprises the following raw materials by mass percentage: 0.1-50% active ingredient, 5-30% silica, 5-25% floating material, 3-10% dispersant, 3-10% disintegrant, 1-5% wetting agent, 1-5% emulsifier, 1-5% binder, 0-1% pH adjuster, 0-1% defoamer, with the remainder made up with filler. The active ingredient includes a first active ingredient and a second active ingredient; the first active ingredient includes pyrimisulfuron and / or bensulfuron-methyl; the second active ingredient includes pretilachlor and / or metolachlor. The prepared floating granule product has good floating and dispersing properties. Field trial results show that the prepared floating granule sample has a good control effect on weeds in paddy fields when applied by broadcasting, and is labor-saving, time-saving, labor-saving, and environmentally friendly.

This invention provides a compound herbicide, its preparation method, and its application, relating to the field of pesticide technology. The compound herbicide provided by this invention combines metolachlor or butachlor, nicosulfuron, and propyzoxystrobin or propyzoxystrobin. Through extensive experiments, the inventors discovered that these herbicides, with their different mechanisms of action and weed-killing spectra, not only have a synergistic effect when combined, but also broaden the weed-killing spectrum. Furthermore, all three have short residual periods, do not affect subsequent crops, and facilitate crop rotation. Under different formulations, it can be used in sorghum fields, sunflower fields, corn fields, potato fields, rice fields, etc., adding new agents and options for weed control, reducing pesticide application rates, and promoting sustainable agricultural development.

Abstract A herbicidal composition comprising S-metolachlor, metribuzin and cloransulam-methyl. Abstract 20 26 20 50 31 26 J un 2 02 6 A b s t r a c t 2 0 2 6 2 0 5 0 3 1

This invention discloses a method for suppressing allergenic Artemisia species and establishing vegetation through aerial seeding around urban areas, belonging to the field of Artemisia control technology. The method includes: S1, applying a soil-sealing herbicide by drone before or at the early stage of Artemisia germination; the soil-sealing herbicide is one or more of pendimethalin, acetochlor, or S-metolachlor, combined with an adjuvant of fatty alcohol polyoxyethylene ether at 0.5%-1% of the total amount; a compound formulation of the adjuvant; S2, before continuous rainfall during the rainy season in July and August, using drones to aerially seed a combination of seeds consisting of pioneer species *Alternanthera philoxeroides*, dominant species *Leymus chinensis* and *Cephalotaxus fortunei*, and associated species such as *Alfalfa* and *Lysimachia nummularia*, at a seeding rate of 1.5-2.5 kg / mu; S3, monitoring and managing the vegetation in the restoration area. This invention cuts off allergens at the source, effectively suppresses Artemisia germination by constructing a structurally stable alternative community, significantly improves vegetation coverage, species diversity, and soil fertility, achieving the dual goals of ecological restoration and allergen control.