77 results about "Phenyl hydrazine" patented technology

Adhesive compositions are disclosed which cure rapidly and completely on confinement between passive substrates, such as magnesium alloys, that are deficient in transition metals and transition metal ions. The compositions include one or more acrylate resins, one or more peroxy free radical initiators, one or more onium salts, and an accelerator such as acetylphenyl hydrazine desirably in an amount of about 1.0% or less by weight of the composition. These compositions provide exceptional bonding to such substrates without the need for a transition metal primer. Methods of making and using such compositions are also disclosed.

The invention belongs to the technical field of pesticide and midbody synthesis, particularly relates to a synthesis method for bifenazate. In the synthesis method for the bifenazate, a target product is synthetized by taking para-hydroxydiphenyl as a raw material through nitration, methylation, hydrogenated reduction, diazotization, diazonium salt reduction and an acylation one-step method, wherein acylation reaction is directly performed on hydrazonium salt without treatment, thus, the experimental procedure is shortened, the yield is improved to above 65 percent from 50 percent, the conversion rate of a reaction product is high, and the purification treatment is easy to perform. The synthesis method for the bifenazate has the advantages that the operation is simple, the condition is mild, the yield is high, the cost is low, and the like, is easy to carry out industrial production and has a wide application prospect. The bifenazate synthetized by the invention can be used as a specific acaricide, is active in active stage of tetranychid, can also control pests, such as Tetranychus urticae, in the egg stage, and is used for cotton, hop and certain fruiter crops to effectively prevent all mites in the growth stage.

The invention relates to an acaricide compound containing biphenyl hydrazine ester. The weight precentage ratio of the first active ingredient: biphenyl hydrazine ester and the second active ingredient: abamectin, pyridaben or propargite of the compound is (5 to 40): 1, (0.5 to 8):1, (0.125 to 0.5):1. The acaricide compound can be prepared into water dispersed particle agent, suspending agent, wettable powder, missible oil or aqueous emulsion. The compound can be applied to the citrus red mite, European red mite and mite on cotton plants. The component is reasonable, the mite killing effect is obvious and the manufacturing cost is low. With quick acting property and long lasting effect, the activity and the disinfectant effect of compound are obviously beneficiated, can slow down the generation of resistance, are safe to plant and meet the safety demand of agricultural chemical preparation.

The invention relates to a preparation method for compounding fragrant hydrazine, in particular to a preparation method of paracyano-group phenyl hydrazine hydrochloride, which mainly solves the technical problems of poor crystal shape and low yield of the prior preparation method. The adopted technical scheme is as follows: the preparation method of the paracyano-group phenyl hydrazine hydrochloride is characterized in that: paracyano-group aniline is used as a raw material and is prepared into diazo hydrochloride in a hydrochloric water solution by the diazotizing reaction of sodium nitrite in the mode of one-step continuous reacting operation, the diazo hydrochloride is reduced by a tin-protochloride hydrochloric solution, filtered and washed to obtain paracyano-group phenyl hydrazine hydrochloride, and the paracyano-group phenyl hydrazine hydrochloride is recrystallized by the mixed solution of methanol and water to obtain a white crystal target product. The paracyano-group phenyl hydrazine hydrochloride obtained by the invention is an important normal medical intermediate product.

The invention discloses an organic one-component inserted bar glue and a preparation method thereof, and belongs to the technical field of anaerobic adhesives. The organic one-component inserted bar glue is prepared from the following raw materials: methacrylic acid epoxide, triethylene-glycol dimethacrylate, acrylic acid, ethylenediamine tetraacetic acid, cumene hydroperoxide, acidified saccharin and hydracetin. By virtue of an anaerobic curing mechanism, the target of one-component inserted bar glue is reached; and the acrylic adhesive can be relatively permanently stored in a liquid state when oxygen exists, and can be cured into an insoluble and non-fusible solid at a room temperature after being isolated from air.

The invention discloses a bifenazate-containing agricultural insecticide composition and an application thereof, wherein, bifenazate is taken as a first active ingredient, any one of fenbutatin or clofentezine is taken as a second active ingredient, and the weight ratio of the first active ingredient to the second active ingredient is 0.01-200:1, preferably 0.2-20:1. The composition has reasonable components, good insect-killing effect, low cost medication, obvious synergic effect, high quick action, long persistent effect, slower resistance generation and good safety on crops, and activity and insect-killing effect thereof are not simple superposition of activity of the components, thus meeting the safety standard of pesticide preparation. The composition has 86.65%-96.38% of control effect on mites on panonychus citri, panonychus ulmi and cotton.

The invention discloses a method of using a deep eutectic solvent to prepare 2-arylindole compounds, and relates to the technical field of organic compound preparation. The deep eutectic solvent is environment-friendly and is taken as the reaction solvent and catalyst. 2-arylindole compounds are prepared through one-step reactions between phenyl hydrazine and substituted acetophenone. The method comprises the following steps: mixing choline chloride (ChCl) and zinc chloride (ZnCl2) according to a mole ratio of 1:4, slowly heating to a temperature of 95 to 100 DEG C, maintaining the temperature, stirring the mixture by magnetic force for 8 to 12 hours to obtain a deep eutectic solvent (ChCl+4ZnCl2); sequentially adding the prepared deep eutectic solvent, phenyl hydrazine, and substituted acetophenone into a reactor according to a mole ratio of 1:1:1, magnetically stirring the mixture for 70 to 90 minutes at a temperature of 120 to 125 DEG C, after reactions, cooling to the room temperature, adding water, stirring, carrying out vacuum suction filtration, washing the filter cake by polyphosphoric acid (10%) until the filter cake becomes neutral to obtain a coarse product, and further recrystallizing the coarse product by ethanol (95%) to obtain a pure crystalline product. The synthesis method is simple, the raw materials are easily available, the cost is low, and the method can be applied to massive production.

The invention refers to a synthesizing method of pineal element. The steps as follows: a. make diethyl malonate or acetylacetic ester react with 1-Br-3-chlorine propane to obtain 3-chlorine propy diethyl malonate or 3-chlorine propyl acetylacetic ester; b, making loop reaction on the resultant and p-methoxyl phenyl hydrazine in potassium hydroxide alcohol solution, then make the acidification process to obtain 2-ethyl oxyyl carboxyl-5-methoxyl tryptamine hydrogen-chloride; c. making further saponfiication and acidification process to obtain 5-methyoxyl tryptamine; d, make further acetylization to obtain conarium element.