68 results about "Acifluorfen" patented technology

The invention provides a synthesis method of a diphenyl ether derivate. The diphenyl ether derivate has a structure as shown in formula (1). The synthesis method comprises the following step: enabling 3-chloro-4-hydroxyl benzotrifluoride (a compound as shown in formula (2)) to be in contact with a compound as shown in formula (3). By using the 3-chloro-4-hydroxyl benzotrifluoride as the starting material to synthesize the diphenyl ether derivate, the synthesis method can realize the reutilization of byproducts (3-chloro-4-hydroxyl benzotrifluoride) in the dual-etherification process route foroxyfluorfen production. Besides, by using the 3-chloro-4-hydroxyl benzotrifluoride to synthesize diphenyl ether herbicides, the content of the product can be increased to more than 90%.

The invention discloses a herbicidal composition containing bentazone, acifluorfen-sodium and fenoxaprop-p-ethyl which serve as the main effective components and are in a mass ratio of 1-70:1-70:1-70. The herbicidal composition of the invention can be used in soybean field post-seedling weeding, and especially presents an obvious effect when applied to control of various gramineous weeds, broadleaf weeds and sedges in soybean fields. Compared with a single agent, the herbicidal composition of the invention, in the precondition of improving herbicide effect, can delay weed resistance and has broad herbicidal spectrum, long persistent period as well as security to soybean and succeeding crops.

The invention discloses a bacterium for degrading a herbicide acifluorfen-sodium and application of the bacterium. The bacterium for degrading acifluorfen-sodium is Enterobacter sp. ZCF1643, which is preserved in China General Microbiological Culture Collection Center by a preservation number of CGMCC No.7774. The enterobacter sp. ZCF1643 CGMCC No.7774 reaches a degrading rate of 63.47% on 25mg/L of acifluorfen-sodium in an organic salt culture medium within 7 days, showing that the strain can effectively degrade the acifluorfen-sodium; the bacterium has a wide application prospect in an aspect of repairing acifluorfen-sodium pollution of soil.

The invention discloses a herbicidal composition containing bentazone, acifluorfen-sodium and clethodim which serve as the main effective components and are in a mass ratio of 1-70:1-80:1-80. The herbicidal composition of the invention can be used in soybean field post-seedling weeding, and especially presents an obvious effect when applied to control of various gramineous and broadleaf weeds in soybean fields. In the precondition of improving the herbicide effect, the herbicidal composition of the invention, compared with a single agent, can delay weed resistance and has broad herbicidal spectrum, long persistent period as well as security to soybean and succeeding crops.

The invention relates to the field of pesticide preparations, and discloses a weeding composition and a preparation thereof. The weeding composition comprises flumiclorac-pentyl and a diphenyl ether compound, wherein acifluorfen, fomesafen, fluoroglycofen-ethyl, oxyfluorfen, fomesafen, lactofen, bentazone, aclonifen, bifenox, fenoxaprop-p-ethyl or nitrofen is used as the diphenyl ether compound. According to the weeding composition and the preparation thereof, the flumiclorac-pentyl and the diphenyl ether compound are compounded as an active ingredient, have complementary advantages and have a cooperative effect; the production of weed herbicide resistance is delayed; meanwhile, the weeding composition has a synergistic effect on weeds in a soybean field, has the advantages of safety, high efficiency and environment-friendliness and can be widely applied to prevention and control of soybean weed pests; and the dosage and the dosing frequency can be greatly reduced.

Protoporphyrinogen oxidase having an activity of imparting acifluorfen resistance and gene thereof are provided. Cyanobacterium protoporphyrinogen oxidase gene is identified by introducing a protoporphyrinogen oxidase gene of Arabidopsis into cyanobacterium, disrupting a cyanobacterium gene with a transposon, selecting a mutant strain in which protoporphyrinogen oxidase gene is disrupted, identifying the disrupted protoporphyrinogen oxidase gene, and isolating the disrupted protoporphyrinogen oxidase gene. This procedure is effective as a gene isolation technique when a protein derived from other organism species that is homologous to a known protein (e.g., protoporphyrinogen oxidase from cyanobacterium) can not be found in a gene database of the other species.

The invention discloses a weeding composition containing bentazone, acifluorfen-sodium and quizalofo-P-ethyl. The weeding composition adopts the bentazone, the acifluorfen-sodium and the quizalofo-P-ethyl as main effective components, wherein a mass ratio of the bentazone to the acifluorfen-sodium to the quizalofo-P-ethyl is 1:60:1-60:1-60. The weeding composition provided by the present invention can be applicable for weeding in the soybean field after seedling, specifically provides significant effects for prevention and elimination of various grassy weeds, broadleaf weeds and papyrus in the soybean field. Compared to the single weed killer, in the premise of improvement of the efficacy, the weeding composition provided by the present invention delays the resistance generating of the weeds, and has wide weeding spectrum and long effective duration, and provides safeties for the soybean and the succeeding crops.

The invention discloses a herbicidal composition containing bentazone, acifluorfen-sodium and sethoxydim. The herbicidal composition treats bentazone, acifluorfen-sodium and sethoxydim as main effective components, and the mass ratio among bentazone, acifluorfen-sodium and sethoxydim is 1-60:1-60:1-60. The herbicidal composition of the invention which is used for postemergent weeding in soybean fields has a substantial effect when being applied to control various grassy weeds, broadleaf weeds, and sedges in the soybean fields. Compared with a single dose, the herbicidal composition of the present invention allows weed resistance delay, broad weeding spectrum, and long persistent period to be realized and has security to soybean and later crops on condition that the drug effect is improved.

The invention relates to a weeding combination containing pyraflufen-ethyl and a diphenyl ether compound, which is mainly characterized in that the weeding combination contains 1-60 percent of active ingredient A, i.e. the pyraflufen-ethyl, 1-80 percent of active ingredient B, adjuvant and other excipients, the active ingredient B is selected from acifluorfen, fomesafen or fluoroglycofen-ethyl, and the weeding combination is prepared into wettable powder, water dispersible granules, oil suspending agent, suspending emulsion, microemulsion and emulsion in water. The weeding combination provided by the invention can be used for preventing and controlling weeds in soy bean fields and paddy fields.

The invention discloses a bacterium for degrading herbicides and application thereof. The bacterium for degrading the herbicides is Rhizobium sp. 198-L-30 which has the collection number of CGMCC No. 9864 in the China General Microbiological Culture Collection Center. According to the Rhizobium sp. 198-L-30 with the collection number of CGMCC No. 9864 provided by the invention, the degradation rate on 100mg/L of imazethapyr in an inorganic salt culture medium within 7 days is 93.40 percent; the degradation rate on 50mg/L of acetochlor is 88.44 percent; the degradation rate on 100mg/L of chlorimuron-ethyl is 41.15 percent; and the degradation rate on 100mg/L of acifluorfen is 12.28 percent. According the strain, the herbicides such as imazethapyr, acetochlor, chlorimuron-ethyl and acifluorfen can be degraded.

The invention belongs to the field of weeding, and discloses a mixing weed killer containing bentazone, acifluorfen-sodium and fenoxaprop-p-ethyl, and an application thereof. The mixing weed killer adopts the bentazone, the acifluorfen-sodium and the fenoxaprop-p-ethyl as main effective components, wherein a mass ratio of the bentazone to the acifluorfen-sodium to the fenoxaprop-p-ethyl is 0.1-80:0.1-80:0.1-80, the total mass percentage of the three materials in the mixing weed killer is 1-85%. The mixing weed killer provided by the present invention can be applicable for weeding in the soybean field after seedling, specifically provides significant effects for prevention and elimination of various grassy weeds and broadleaf weeds in the soybean field. Compared to the single weed killer, in the premise of improvement of the efficacy, the weeding composition provided by the present invention delays the resistance generating of the weeds, and has wide weeding spectrum and long effectiveduration, and provides safeties for the soybean and the succeeding crops.

The invention relates to the technical field of herbicides, and discloses a preparation process of acifluorfen, which comprises the following steps: synthesizing 3-[2-chloro-4-(trifluoromethyl) phenoxy] benzoic acid by using 3, 4-dichlorobenzotrifluoride as a raw material, and carrying out nitration reaction by using concentrated sulfuric acid and concentrated nitric acid as mixed acids to obtainacifluorfen. According to the production process disclosed by the invention, an extracted 3-[2-chloro-4-(trifluoromethyl) phenoxy] benzoic acid solution is directly conveyed to a nitration kettle fornitration reaction, the process is simpler, the production progress can be effectively accelerated, the yield can be effectively increased, the nitration reaction temperature in the process is about 40 DEG C, the reaction time is shorter, the problem of more impurities caused by high temperature and overlong reaction time can be avoided, meanwhile, the time cost can also be saved, and the preparation process has the characteristics of mild reaction conditions and high yield.

The invention discloses a composite microemulsion of acifluorfen, pyridaben and prochloraz-manganese chloride complex. The composite microemulsion of the acifluorfen, the pyridaben and the prochloraz-manganese chloride complex comprises 20-30 parts of acifluorfen, 10-15 parts of pyridaben, 5-15 parts of prochloraz-manganese chloride complex, 5-13 parts of calcium dodecyl benzene sulfonate, 4-10 parts of phenyl phenol polyoxyethylene ether and the balance water. A preparation method of the composite microemulsion of the acifluorfen, the pyridaben and the prochloraz-manganese chloride complex includes that the components are added in an agitator kettle in proportion and stirred slowly, and temperature rises to 10-15 DEG C gradually. The composite microemulsion of the acifluorfen, the pyridaben and the prochloraz-manganese chloride complex is combined with a pesticide, can cure summer soybean annual weeds, citrus red mite and rice blast, reduces cost, and improves control efficiency of the pesticide.

The invention discloses fluroxypyr clethodim missible oil which comprises the components in percentages by mass as follows: 5-10% acifluorfen, 5-10% of clethodim, 2-6% of calcium dodecyl benzene sulfonate, 4-8% of pesticide emulsifier No. 600 and 70-80% of dimethylbenzene. The effective components of the fluroxypyr clethodim missible oil are the acifluorfen and the clethodim. As the acifluorfen, the clethodim and padding are compounded according to a certain proportion to form a fluroxypyr clethodim compound pesticide, the fluroxypyr clethodim missible oil, disclosed by the invention, has the advantages of delaying resistance to drugs of plants, improving preventive treatment of the pesticide, playing the advantages of various drugs, reducing cost, obtaining obvious labor-saving benefits and improving economic benefits.

The invention discloses a weedicide composition containing glyphosate, acifluorfen and pyrithiobac-sodium. The weedicide composition contains the active components of glyphosate, acifluorfen and pyrithiobac-sodium, and comprises the following components in percentage by weight: 30-60% of glyphosate, 5-30% of acifluorfen, 0.5-10% of pyrithiobac-sodium and the balance of assistant. The preparation formulation of the weedicide composition can be water and soluble powder (granules). The composition has obvious synergistic action after being complexed, enlarges the weed control spectrum, improves the weeding speed and remarkably reduces the consumption and use frequency of the weedicide, and can be used for controlling weeds in woodlands, noncroplands, citrus orchards and other places as well as some gramineous and broadleaf weeds which are difficult to control.

The present invention provides a safe and effective weeding agent for vegetable planting, wherein the safe and effective weeding agent comprises, by weight, 100 parts of water, 25-35 parts of abamectin, 4-10 parts of fentrazamide, 3-7 parts of pyriminobac-methyl, 4-8 parts of pyrazosulfuron-ethyl, 1-5 parts of s-metolachlor, 2-6 parts of flumetsulam, 1-5 parts of fomesafen, 5-7 parts of permethrin, 2-10 parts of acetochlor, 4-6 parts of sethoxydim, 3-5 parts of acifluorfen, 1-3 parts of cyhalothrin, and 2-6 parts of methothrin. According to the present invention, the safe and effective weeding agent has the reasonable formula, can well eliminate various weeds during vegetable growth processes, is safe and efficient, can effectively improve the yield and the quality of vegetables, and further has advantages of good drug degradation effect and less residue.

The invention discloses acifluorfen and quizalofopethyl emulsifiable concentrate, which comprises the following components in percentage by mass: 1 to 4 percent of acifluorfen, 2 to 8 percent of quizalofopethyl, 2 to 6 percent of dodecyl calcium bensosulfonate, 2 to 10 percent of styrylphenol polyoxyethylene ether and 80 to 85 percent of dimethylaniline. In the invention, acifluorfen single agent, quizalofopethyl single agent and some filler are mixed in a certain ratio to form an acifluorfen and quizalofopethyl compound agent. The compound pesticide is a postemergence stem and leaf herbicide, has double functions of suction conduction and contact killing, can kill simple-leaf and double-leaf weed, has high weeding activity and broad weeding spectrum and exerts no influences on afterreap crops under normal use technical conditions.

The invention belongs to the field of herbicide, and discloses a mixed herbicide containing bentazone, acifluorfen and molinate, and application thereof. The herbicide comprises main effective components of bentazone, acifluorfen and molinate in a mass ratio of 0.1-80:0.1-80:0.1-80. The mixed herbicide of the invention has substantial effects on application to weeding after seedling in a rice field, especially application to control of gramineae weeds and broad leaf weeds in the rice field. Compared with a single dose, the herbicide of the invention, on the premise of enhancing drug effect, delays weed resistance, has a wide weeding spectrum and a long persistent period, and is safe to rice and later crops.

The invention relates to a herbicide composition and in particular relates to a pre-emergence herbicide mixture applied to a peanut field. The composition is prepared from the following raw materials in parts by weight: 30-45 parts of lactofen, 30-45 parts of acifluorfen, 14-23 parts of pendimethalin, 14-22 parts of metolachlor and 8-10 parts of s-metolachlor. The herbicide composition is used for weeding by different manners; different tissue parts of weeds are used as absorption paths; the herbicide composition respectively takes effect on different target enzymes of the weeds by synthetic action of touching and killing, internally adsorbing and transmitting; the weeds can be removed at one time; the succession of weed communities and the herbicide resistance enhancement can be effectively avoided; the pollution to the environment and the threat on the crops and foods can be alleviated.

The invention belongs to the field of herbicides, and discloses a mixed herbicide containing bentazone, acifluorfen and cyhalofopbutyl and application thereof. The bentazone, the acifluorfen and the cyhalofopbutyl are used as main effective ingredients of the herbicide; the mass ratio of the bentazone, the acifluorfen and the cyhalofopbutyl is (0.1-80): (0.1-80): (0.1-80); and the total mass percentage composition of the bentazone, the acifluorfen and the cyhalofopbutyl in the herbicide is 1 to 85 percent. The mixed herbicide has remarkable effect on application of weeding in soybean field seedlings, particularly on application of preventing and weeding various gramineous or broadleaf weeds of soybean fields. Compared with a single agent, the herbicide delays the resistance of the weeds on the premise of improving the pesticide effect, and has wide weeding spectrum and long acting period; and the herbicide has safety on soybean and subsequent crops.

The invention belongs to the field of herbicides and discloses a mixed herbicide containing bentazone, acifluorfen and sethenoxydim and an application thereof. The herbicide uses bentazone, acifluorfen and sethoxydim as main active ingredients, and the mass ratio of bentazone, acifluorfen and sethoxydim is 0.1~80:0.1~80:0.1~80 , the total mass percentage of the three in the herbicide is 1-85%. The application of the mixed herbicide of the present invention in post-emergence weeding in soybean fields, especially in the application of controlling various gramineous or broad-leaved weeds in soybean fields has remarkable effects. Compared with a single dose, the herbicide of the present invention delays weed resistance, has a wide herbicide spectrum, long duration of action and is safe to soybeans and subsequent crops under the premise of improving the efficacy of a single agent.

The invention relates to the field of herbicides and specifically discloses a preparation method of acifluorfen. The acifluorfen is a compound shown by formula (1) in the specification. The method comprises the following steps: (1) dropwise adding the compound shown by formula (2) in the specification into an organic solvent containing alkali carbonate and the compound shown by formula (3) in the specification so that the compound shown by formula (3) contacts and reacts with the compound shown by formula (2) to obtain the compound shown by formula (4); and (2) performing alkaline hydrolysis and acidification of the compound shown by formula (4) to obtain the compound shown by formula (1). By adopting the preparation method, the target compound can be prepared with relatively high yield in relatively mild reaction conditions.

The invention provides farm chemical soluble granules and a preparation method thereof. The mass content of effective components in the soluble granules is 60%-90%, and the effective components are one or a mixture of two of fomesafen, bentazone, imazamox, imazapic and acifluorfen-sodium. The soluble granules prepared by the invention have the advantages of high content, convenience in packaging and low transportation cost, and can be automatically dissolved in water, so that the farm chemical effect is greatly exerted; and no dust is generated in the production and use processes, so that thegranules are environment-friendly.

The invention relates to a herbicide composition, and in particular relates to a herbicide compound preparation for a peanut field. The composition is prepared from the following raw materials in parts by weight: 25-35 parts of sethoxydim, 20-30 parts of clethodim, 18-23 parts of quizalofop-P-tefuryl, 14-20 parts of lactofen and 20-32 parts of acifluorfen. According to the herbicide composition, different acting ways are used for weeding, different tissue parts of weeds are taken as absorbing ways, and the herbicide composition respectively acts on different target enzymes of the weeds in a way of combining touch killing and intake transportation, so that the weeds can be removed once, the succession and the drug resistance enhancement of a weed community are effectively avoided, and the environmental pollution and the threat to crops and food safety can be reduced.

The invention discloses a method for preparing acifluorfen by catalyzing and nitrifying with solid super acid and relates to a preparation method of a nitro compound. The method comprises the following steps of: reacting 3-[2-chlorine-4-(trifluoromethyl) phenoxyl] benzoic acid and fuming nitric acid under the catalysis of solid super acid for 1-20 hours at 20-80 DEG C in the presence of acetic anhydride in dichloroethane; filtering and recovering a solid super acid catalyst; and layering, drying and evaporating the solution to obtain an acifluorfen product. In the invention, the used solid super acid is a load type super acid using metallic oxides as carriers, wherein the carriers comprise iron sesquioxide, titanium dioxide and zirconium dioxide. Compared with the traditional mixed acid nitrification, the method has the advantages of high yield, good selectivity, easiness of product separation, catalyst recycling capability and low environmental pollution and has industrial application prospect.