160 results about "Carbohydrazide" patented technology

The invention provides a Fenton and Fenton-like system fortifier and a using method thereof, which relate to a water treating fortifier and a using method thereof and overcomes the defects that the pH value of the Fenton and Fenton-like system reaction water body is limited, the adding amount of Fe<2+> is overhigh in the Fenton reaction, and the reaction speed is low in Fenton-like reaction. The fortifier is selected from ascorbic acid, sodium sulfite, lithium sulfite, potassium sulfite, magnesium sulfite, calcium sulfite, hydroxylamine, hydroxyl-ammonium perchlorate, hydroxylamine sulfate, hydrazine, N,N-diethylhydroxylamine, carbohydrazide, ethanolamine, a hydroxylamine solution or N,N,N',N'-tetra substituted phenylenediamines. The using method has the following steps of: adding the Fenton and Fenton-like system fortifier, fortificated chemicals and peroxide into the treated water body; and then, uniformly stirring to react. The fortifier can accelerate the reaction of water treatment and decrease the using amount of the fortificated chemicals.

The invention discloses a filming corrosion inhibitor, which at least comprises 30 to 50 percent of octadecylamine, 20 to 30 percent of imidazoline amide, and reducing agent carbohydrazide being the rest, the above proportion is mass percentage. Under the condition that the temperature is 150 to 500 DEG C, the concentration of the filming corrosion inhibitor is 10 to 35 ppm, the pH valve is 7 to 11, and the time duration is 1 h to 10 min, the filming corrosion inhibitor can produce a compact protective film on the metal surface, and the function of preventing the metal to be corroded in the atmospheric environment is realized, especially the invention can be applied during the thermal power plant to stop the boilers for protection, the protective film with strong hydrophobicity and good erosion resistance can be produced on the metal surface inside the water vapor system of the thermal equipment, and the thermal equipment can be protect from being corroded for more than 8 months during the exposition in atmospheric environment, simultaneously, the invention has certain cleaning, uncovering, and removing function to the incrustation and the corrosion product on the metal surface of the thermal system, the probability of the thermal equipment corrosion and the four-tube blasting is reduced, the invention is advantageous for extending the acid pickling cycle of the boiler, the service life of the equipment is prolonged, the security is enhanced, and the economic benefit is increased.

The invention relates to a preparation method and application of a fluorescent probe and belongs to the field of chemical sensing materials. The fluorescent probe is applied in the field of mercury ion detection. The preparation method comprises a step of dissolving carbohydrazide and hydroxylanthraldehyde in a mixture solution composed of ethanol and water and adding an acidic solution dropwisely to prepare the fluorescent probe, which is named Schiff base fluorescent sensing material. The Schiff base fluorescent sensing material then is applied in the mercury ion detection. The fluorescent probe, which is simple in structure and is easy to prepare, is very high in selectivity and sensitivity to Hg<2+> ion in a N,N-dimethylformamide solution. The fluorescent probe has fluorescence enhancement on the Hg<2+> ion and is 1*10<-5> mol / L in lowest detectable limit of the Hg<2+> ion concentration. The compound has high-sensitivity and high-selectivity fluorescent detection to the Hg<2+> ion without interferences caused by other ions, such as Ag<+>, Zn<2+>, Co<2+>, Ca<2+>, Cu<2+>, Ba<2+>, Pb<2+>, Mg<2+>, Ni<2+>, Cd<2+> and the like, so that the fluorescent probe can be applied widely in a Hg<2+> ion sensor with fluorescent channel detection.

The invention relates to the field of odor removal, in particular to an environmental-friendly odor-removing formaldehyde composition and a preparation method thereof. The composition at least comprises the following raw materials in parts by weight: 10-30 parts of sepiolite, 1-8 parts of a surfactant, 0.1-0.5 part of a carbohydrazide modified graphene oxide-nano titanium dioxide compound, 1-3 parts of plant essential oil and 50-80 parts of deionized water. The preparation method of the environmental-friendly odor-removing formaldehyde composition at least comprises the following steps: uniformly mixing the sepiolite, the surfactant and the deionized water so as to obtain a mixed solution, further putting the carbohydrazide modified graphene oxide-nano titanium dioxide compound into the mixed solution, heating to be less than 50 DEG C, stirring to react for 1 hour, further adding the plant essential oil, uniformly stirring, and leaving to stand for 24 hours at 0 DEG C, so as to obtain the environmental-friendly odor-removing formaldehyde composition.

The invention discloses a method for synthesizing 5,5'-dinitroamino-3,3'-co-1,2,4-triazole carbohydrazide. The carbohydrazide has the following structural formula, wherein the structural formula is as shown in the specification. In the method, 5,5'-diamino-3,3'-co-1,2,4-triazole serves as a raw material, and the method comprises the following steps: (1) adding the 5,5'-diamino-3,3'-co-1,2,4-triazole into a nitric acid and ammonium nitrate system in batches at the temperature of 0 DEG C, wherein a molar ratio of the 5,5'-diamino-3,3'-co-1,2,4-triazole, nitric acid to ammonium nitrate is 1:40: (4-8), stirring for 15 minutes, raising the temperature to 25 DEG C, reacting for 1.5 hours, pouring the reaction liquid into ice water, filtering, washing and drying to obtain 5,5'-dinitroamino-3,3'-co-1,2,4-triazole; and (2) adding the 5,5'-dinitroamino-3,3'-co-1,2,4-triazole, an aqueous liquid of sodium hydroxide and carbohydrazide into a reaction bottle under the temperature of 60 DEG C, wherein a molar ratio of the 5,5'-dinitroamino-3,3'-co-1,2,4-triazole, sodium hydroxide to carbohydrazide is 1:3:2.05, stirring for 20 minutes, dropwise adding 35 mass percent of hydrochloric acid until the pH value is 4-7, reducing the temperature to 25 DEG C, separating out a white product 5,5'-dinitroamino-3,3'-co-1,2,4-triazole carbohydrazide in the system. The method is mainly used for preparing the5,5'-dinitroamino-3,3'-co-1,2,4-triazole carbohydrazide.

The invention discloses preparation and application of 4-chlorine-3-ethyl-1-methyl-N'-(2-substituted phenoxy acetyl)-1H-pyrazol-5-carbohydrazide compounds. The preparation comprises the following steps: carrying out backflow reaction on thionyl chloride and N-methyl-3-ethyl-4-chloride pyrazole carboxylic acid for 1h to obtain a compound (II), putting the mixed liquor of a compound (III), an organic solvent and an acid-binding agent in a round-bottom flask, dropwise adding the compound (II) at 20-30 DEG C while stirring, then heating up to backflow reaction, carrying out TLC tracing until the raw materials are completely reacted, stopping the reaction, respectively extracting by using 50ml of water twice, drying the organic layer by anhydrous NaSO4, evaporating out the solvent under reduced pressure, and carrying out recrystallization to obtain the target compound shown in the formula (I). According to the preparation and the application, the reaction conditions are mild, the postprocessing is convenient and the total yield of the reaction is as high as 81%; and the compound has a herbicidal activity, thus laying a foundation for the research and development of new pesticides.

The invention discloses an electroless tin plating formula for a printed circuit board. The formula comprises the following components with the following concentrations: 10-30g / L of stannous ions, 70-130g / L of thiourea, 30-70g / L of methanesulfonic acid, 30-60g / L of citric acid, 20-50g / L of tetrasodium iminodisuccinate, 10-30g / L of carbohydrazide, 10-50mg / L of interfacial agent, 0.05-0.15g / L of bismuth acetate and 20-40g / L of polyamino polyether methylene phosphonate, wherein the component solutions are uniformly mixed and then prepared into an electroless tin plating solution; and the electroless tin plating solution has the following characteristics: tin is stable in tin deposition rate, bivalent tin is not liable to be oxidized into tetravalent tin, and the solution is high in stability. The formula disclosed by the invention contains many complexing agents, the stannous ions are not liable to be oxidized into tetravalent tin, the oxidization of oxygen dissolved in the plating solution can be cancelled by virtue of a reducing agent, the plating solution contains bismuth acetate, a plating layer is a tin-bismuth alloy, and the alloyed plating layer is not liable to grow tin whiskers; and moreover, the electroless tin plating solution has the following characteristics: tin is stable in tin deposition rate, bivalent tin is not liable to be oxidized into tetravalent tin, and the solution is high in stability.

The invention relates to a biodegradable resin composition containing a biodegradable resin, a plasticizer and a crystal nucleus agent, the plasticizer being a compound containing two or more ester groups in the molecule thereof, wherein at least one alcohol component constituting the ester contains an alkylene oxide having 2 to 3 carbon atoms, added in the average amount of 0.5 to 5 moles per one hydroxyl group, and the crystal nucleus agent is a mixture of the following crystal nucleus agent (1) and crystal nucleus agent (2); the crystal nucleus agent (1) being the following crystal nucleus agent (1-1) or crystal nucleus agent (1-2): crystal nucleus agent (1-1): at least one selected from compounds having a hydroxyl group and an amide group in the molecule thereof; and crystal nucleus agent (1-2): at least one selected from hydroxy fatty acid esters; crystal nucleus agent (2): at least one selected from a metal salt of phenylphosphonic acid, a metal salt of a phosphate, a metal salt of an aromatic dialkyl sulfonate, a metal salt of rosinic acids, an aromatic carboxylic acid amide, rosinic acid amide, carbohydrazides, N-substituted ureas, salts of melamine compounds and uracils.

An aromatic polymer containing aromatic polyamide structural units and aromatic carbohydrazide structural units at a specific ratio is disclosed. A film having a high Young's modulus, high elongation at break and low moisture absorption can be formed from such an aromatic polymer. Dehydration cyclization of a compound having a carbohydrazide structure can be conducted under mild conditions at low cost by causing the chemical reaction using a chemical which is selected from the acids and bases.

The present invention relates to ethyl(2-methyl-3{(E)-[(naphtho[2,1-b]furan-2-ylcarbonyl)hydrazono]methyl}-1H-indole-1-yl)acetate, the novel mitosis inhibitor. The said ethyl(2-methyl-3{(E)-[(naphtho[2,1-b]furan-2-ylcarbonyl)hydrazono]methyl}-1H-indole-1-yl)acetate not only induces apoptosis by inhibiting tubulin polymerization in the course of mitosis but also displays an excellent anticancer effect in the multi-drug resistant cancer cells, so that it can be effectively used for the treatment of cell proliferative disease including various cancers.

The invention relates to a multifunctional protective agent for a boiler water supply system and a preparation method thereof. The protective agent comprises the following components expressed in mass percentage: 10 to 30% of cyclohexylamine, 5 to 15% of carbohydrazide, 10 to 20% of N-methyldiethanolamine, 1 to 5% of sodium humate and 20 to 75% of water, wherein the weight percentage of all the above-mentioned components sums to 100%. The protective agent provided by the invention is applicable to middle and low pressure boiler water supply processing systems and can effectively inhibit corrosion of a boiler, a furnace tube, a heat exchanger and a steam condensate system; the protective agent effectively controls stabilization of the pH value of water bodies in the boiler and the steam condensate system; and the protective agent effectively inhibits scale formation in the boiler, has stronger control and disperses generated scale which is then removed through pollution discharging by the boiler.

The invention belongs to the field of analysis technical methods, and relates to a broad-spectrum low-potential electrochemical luminescence system and a construction method thereof. Low-toxicity carbohydrazide is used as a co-reactant, ruthenium bipyridine in a molecular form and a series of other substances in a nano-form, such as CdTe CdSe, Au and CuInS2 / ZnS quantum dots are immobilized on thesurface of a working electrode by using nafion, and anode electrochemical luminescence radiation close to 0.55 V is obtained in a water-phase buffer solution system close to physiological conditions.The luminescence potential of the system of the invention is obviously lower than the luminescence potential (1.2 V) of a classical ruthenium bipyridine / tripropylamine system, electrochemical interference can be effectively reduced, and the tolerance of an electrode material is improved.

The invention relates to a naphthopyran carbazone derivative as well as a preparation method and application thereof, and belongs to the technical field of organic synthesis. The preparation method ofthe naphthopyran carbazone derivative comprises the following steps of S1, adding 3H-naphtho[2,1-b]pyran-2-formaldehyde into an organic solvent to be dissolved; then, adding carbohydrazide to obtaina mixture; S2, performing backflow stirring reaction on the mixture obtained in the S1 at normal pressure; S3, after the reaction is completed, performing cooling to room temperature; separating out solid; performing reduced pressure filtering; taking filter slag; S4, washing filter slag obtained in the step S3 to obtain the naphthopyran carbazone derivative. The naphthopyran carbazone derivativehas high sensitivity and high selectivity when being used as a ratio fluorescence probe for detecting copper ions, particularly in application of convenient detection of copper ions in cells as a fluorescence probe.