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356 results about "Cyhalofop-butyl" patented technology

Weeding composition for paddyfield

The invention discloses a weeding composition for a paddyfield. The weeding composition is prepared by combining a sodium sulcotrione weedicide as an active ingredient and any one or more of a cyhalofop-butyl weedicide, a bensulfuron methyl weedicide, a pyrazosulfuron-ethyl weedicide, a quinclorac weedicide, a mefenacet weedicide, a bispyribac-sodium weedicide or a penoxsulam weedicide; and the weight ratio of two materials is 1:40-70:1. The composition can be made into oil deflocculant, missible oil, wettable powder, water dispersible granule and the like according to a well-known method. The weeding composition has the characteristics of high-efficient weeding effect, wide weed spectrum, little use amount, low residue, safety to crop, low cost and good prevention and control effect on broadleaf weed and grassy weed; and the weeding composition is applied for one time and can basically control the harm of weeds of the paddyfield in whole season.
Owner:HEFEI XINGYU CHEM

A comprehensive herbicide for paddy fields

The present invention provides a comprehensive herbicide for paddy fields, which includes component A and component B, wherein component A is mesotrione, and one or more of component A and component B Item compound, used for weeding in the field; component B is alachlor, metolachlor, propachlor, acetochlor, pretilachlor, butachlor, mefenacet, quinclorac , Cyhalofop-methyl, pendimethalin, saponin, bispyribac, saflufenacil, cyclopyrafen, pyrifluben. After the above scheme is adopted in the present invention, the composition of component A and component B has a synergistic effect, and has a good control effect on both grass weeds in paddy fields and broad-leaved and sedge weeds , and the residual effect period is short, does not affect the growth of the next crop, and is friendly to the environment.
Owner:湖南振农科技有限公司

Synergistic herbicide

The invention discloses a synergic herbicide comprising effective constituents and auxiliary materials, the effective constituents include mixture of bispyribac sodium and cyhalofop-butyl, wherein the percentages by weight of the constituents include, bispyribac sodium 1-45%, cyhalofop-butyl 1-45%. The rice field herbicide has low cost.
Owner:徐开云

Preparation method of cyhalofop-butyl

The invention relates to a preparation method of cyhalofop-butyl. The method comprises the following steps: by using (R)-2-(4-hydroxyphenoxy)propionic acid and 3,4-difluorobenzonitrile as raw materials and an inorganic alkali as an acid-binding agent, adding an organic alkali and a phase-transfer catalyst, carrying out etherification reaction under milder conditions within a short time to generate an intermediate (R)-2-[4-(2-fluoro-4-cyano)-phenoxy]-propionic acid, and carrying out esterification reaction for dehydration, wherein the total yield of the two reactions can reach 94% or above, and the optical purity is greater than 99%. The method lowers the etherification reaction temperature, shortens the etherification reaction time, enhances the reaction selectivity, completely maintains the chirality, and increases the product yield, thereby saving the energy consumption and lowering the cost. Besides, in the esterification reaction, the used dehydration solvent can lower the byproduct content, thereby omitting the refinement operation of the product, reducing the discharge amount of three wastes, and being beneficial to environmental protection.
Owner:江苏丰山生化科技有限公司

Fluroxypyr.cyhalofop-butyl compound weedicide

The invention relates to a fluroxypyr.cyhalofop-butyl compound weedicide and belongs to the technical field of pesticide. The aim of the invention is to provide the fluroxypyr.cyhalofop-butyl compound weedicide which can prevent and remove both grassy weed and broadleaf weed of a paddy field, has no influence on succession crop, is environment-friendly and has economic price. The fluroxypyr.cyhalofop-butyl compound weedicide comprises the following main technical points that: the fluroxypyr.cyhalofop-butyl compound weedicide is prepared from raw materials and auxiliary materials in percentage by mass: 15 to 60 percent of fluroxypyr, 5 to 20 percent of cyhalofop-butyl, 2 to 15 percent of cosolvent, 5 to 15 percent of surfactant and a solvent replenished till 100 percent. The fluroxypyr.cyhalofop-butyl compound weedicide is safe to paddy; 90 g of the weedicide is used in one mu of the paddyfield and can achieve excellent weeding effect; the weed preventing effect can achieve over 80 percent for thirty days and achieve over 90 percent for sixty days; and with the increase of dosage, the preventing effect is obviously strengthened; and once application of the weedicide can prevent and remove the weeds in the whole growth period and has no influence on the succession crop. The fluroxypyr.cyhalofop-butyl compound weedicide is used for preventing and controlling the weeds of the paddy field.
Owner:HEFEI XINGYU CHEM

Bentazone.cyhalofop-butyl missible oil

The invention relates to bentazone.cyhalofop-butyl missible oil and belongs to the technical field of pesticide. The aim of the invention is to provide the bentazone.cyhalofop-butyl missible oil with good prevention effect, high safety to paddy and low cost. The bentazone.cyhalofop-butyl missible oil comprises the following main points that: the bentazone.cyhalofop-butyl missible oil is prepared from raw materials and auxiliary materials in percentage by mass: 15 to 30 percent of bentazone, 2 to 5 percent of cyhalofop-butyl, 13 to 18 percent of cosolvent, 10 to 12 percent of emulsifier and a solvent replenished till 100 percent; the solvent, the cosolvent and the bentazone are thrown sequentially and stirred; after the bentazone is fully dissolved, the cyhalofop-butyl is thrown and stirred; after full dissolution, the emulsifier is thrown into the solution; and the mixed solution is evenly stirred to obtain the bentazone.cyhalofop-butyl missible oil. Because the bentazone and the cyhaloop-butyl are compounded and act on different parts inside a weed body according to different weeding mechanisms of the bentazone and the cyhaloop-butyl through combination of advantages of two single weedicides, weeds are killed in different approaches, so that the better weeding effect is achieved. The bentazone.cyhalofop-butyl missible oil is used for preventing and controlling the weeds in a paddy field.
Owner:HEFEI XINGYU CHEM
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