92results about How to "The synthetic process route is simple" patented technology

The invention discloses an environmentally-friendly amine cationic collector and a using method thereof. The collector ZJ is ester group-containing quaternary ammonium salt cationic surfactant and has a plurality of alkyl groups, wherein an R alkyl group has 6 to 18 carbon atoms; an R1 alkyl group has 1 to 4 carbon atoms; the number of ester groups is 1 or two; and the number of the quaternary ammonium group is 1. The collector is obtained by esterification and quaternarization. As a hydrophobic chain has a carbonyl structure, the collector can hydrolyze easily into nonsurfactant fragments, and is a surfactant with high biodegradability, small toxicity and high performance. The collector is used in ore flotation for the first time and demonstrates high collecting capacity and selectivity.The collector forms fine and fragile foam that is low temperature resistant. The collector can be used under the condition that the pH value of ore pulp is 7 without corroding equipment. The preparation process of the collector is simple and easy in operation. And the collector is easy to biodegrade and is environmentally-friendly.

The invention discloses a process for preparing organic silicon modified polyacrylic acid (polyacrylate) emulsion with high organic silicon content (15%-25%), wherein the ring-opening polymerization of epoxy silane is carried out simultaneously with the free radical polymerization of vinyl monomer, i.e., (1) ring-opening polymerization occurs to epoxy silane at the presence of catalyst, and organic (ring) siloxane containing unsaturated bonds polycondensation is carried out, thus producing organosilicon resin and organosilicon resin containing unsaturated double bonds, (2) at the presence of initiating agent, the free radical polymerization of vinyl monomer is carried out, and in-situ graft polymerization of organosilicon resin containing unsaturated bonds is carried out to prepare organic silicon-g polyacrylic acid (ester) grafted copolymer (as compatiblizing agent).

The invention discloses a preparation method of a water-blush-resistant fluoride and siloxane modified waterborne pressure-sensitive adhesive for a polyethylene protective film, and the method is used for synthesizing a cross-linking type water-blush-resistant fluoride and siloxane modified waterborne pressure sensitive adhesive with less emulsifier dosage and excellent performance by introducing an organic siloxane monomer and a fluoride-containing vinyl monomer to perform copolymerization modification in a polymerizing process, compounding by utilizing an emulsifier, and adopting a seed emulsion polymerization method. The invention also provides a preparation method of the polyethylene protective film, and the prepared protective film is excellent in water blush resistance, and guarantees that the surface of a protected material does not have residual adhesive of the torn film and is not polluted after the protective film is used outdoors for a long time according to the requirement.

The invention discloses an oxygen reduction electrocatalyst and a preparation method thereof, which is a load type catalyst and consists of a transition metal triethylene tetramine chelate complex and a carbon black carrier; wherein, the transition metal triethylene tetramine chelate complex is obtained by the reaction of transition metal-salt and triethylene tetramine. The oxygen reduction electrocatalyst of the invention uses the triethylene tetramine having simple structure and low cost, which overcomes the defects of traditionally used macrocyclic compound porphyrin and Phthalocyanine and derivatives thereof and has simple preparation technique, low cost, friendly environment and a better catalytic activity; a oxygen reduction peak potential is 0.6745 (vs. NHE) and a oxygen reduction peak current is 1.493mA/m<2>; stability is relatively high, and oxygen reduction catalytic performance is not obviously reduced after recycling for 24 hours. The oxygen reduction electrocatalyst of the invention can be applied to the fields of proton exchange membrane fuel batteries, direct alcohol fuel cells, and cathode materials of metal-air battery, etc.

The invention relates to a production method of an inorganic compound, in particular to a production method of industrial calcium chloride. The industrial calcium chloride is prepared by using shellsand hydrochloric acid as raw materials in a molar ratio of 1:2 to react and then performing filtration and crystallization. The reaction equation is as follows: CaCO3 + 2HCl = CaCl2 + H2O + CO2. The synthetic technological route of the invention is simple, the process has the advantage of no pollution and complete resource utilization, the secondary pollution is less in production process, the leakage of dust is low and the whole production process is environmentally friendly and controllable. Especially shells are used as raw material so as to greatly solve the treatment problem of the shellswaste, avoid the ecological environment pollution caused by waste landfill treatment, have an active role in guiding the waste treatment method of the aquiculture in china and have outstanding environmental friend. The prepared carbon dioxide is needed to recycle, thus avoiding the atmospheric pollution caused by the carbon dioxide emission and further producing economic benefit and creating higher value.

The invention relates to a floating medical agent prepared from food and beverage waste oil and grease and application thereof. The floating medical agent is mainly prepared from the following ingredients through being metered by weight parts: 1 to 1.5 parts of negative ion collecting agents prepared from food and beverage waste oil and grease, 2 parts of NaOH, 0.67 to 1 part of starch and 1 part of CaO. The floating medical agent has the preparation steps of saponification, salting out and baking, wherein during the saponification reaction, the food and beverage waste oil and grease is placed into a container to carry out saponification reaction with NaOH through water bath heating, the ratio of the consumption of the alkali liquor to the mass of the waste oil and grease is 1/(1.5 to 2.5), after the saponification reaction is completed, excessive NaCl is taken to be prepared into a saturated solution to be added into saponification products for carrying out salting out, products of the upper layer are taken out after the still standing to be baked, and the floating medical agent is obtained. The floating medical agent prepared by the invention has the advantages of strong collecting capability, good selectivity, wide raw material sources and low medical agent cost, realizes the recovery and the utilization of the waste oil and grease, and has good social benefits, environment benefits and economic benefits.

The invention discloses a single-component water-borne pressure sensitive adhesive for a sun-proof and heat-insulating film. A fluorine-containing ethylene monomer is introduced in the polymerization process to carry out the modification by copolymerization, and the single-component water-borne pressure sensitive adhesive for the sun-proof and heat-insulating film, which consumes fewer emulsifiers and has excellent performance, is synthetized through a seed emulsion polymerization method by a reaction-type emulsifier. The invention further provides a preparation method of a sun-proof and heat-insulating film viscous layer. The prepared protective film viscous layer has favorable water resistance and weather resistance, can ensure no foaming, no swelling, no wrinkling and no flanging after being used for a long time as required.

The invention relates to a flame retardant, in particular to a phosphorus-nitrogen-silicon compound loaded montmorillonite flame retardant and a preparation method thereof. The phosphorus-nitrogen-silicon compound loaded montmorillonite flame retardant is prepared through a solid-phase grafting reaction between a phosphorus-nitrogen-silicon compound and montmorillonite powder particles, wherein the phosphorus-nitrogen-silicon compound comprises an amido containing silane coupling agent and a phosphoryl chloride containing compound, and is grafted onto montmorillonite through chemical bonds. During preparation of the phosphorus-nitrogen-silicon compound loaded montmorillonite flame retardant, an amino in the silane coupling agent reacts with phosphorus oxychloride to generate a by-product, namely hydrogen chloride gas; one part of the hydrogen chloride gas is brought out of the reaction system through nitrogen gas, and the other part of the hydrogen chloride gas serves as a catalyst for a condensation reaction between the silane coupling agent and a hydroxy on the surface of montmorillonite, so that the silane coupling agent can be grafted into the surface of montmorillonite through the solid-phase grafting reaction, the rate of the solid-phase grafting reaction is improved, and the reaction time is shortened.

The invention relates to a process for preparing grain size controlled, high dispersion nano silicon oxide, wherein the silicate of alkaline metal and inorganic salts capable of producing H+ through hydrolysis are used as the raw material for synthesizing nano silica flour of different grain sizes through the dispersion of the surface active agent.

The invention discloses a method for preparing fluoro-carbonate ester by means of phase-transfer catalysis. The method includes the steps: taking chloro-carbonate ester as reaction raw materials; taking calixarene and derivatives as phase-transfer catalysts, wherein the mass ratio of the calixarene to the raw materials is 0.01-50%; and performing phase-transfer catalysis reaction in organic solvent and metal and ammonium fluorinating agent at the temperature ranging from 20 to 150 DEG C to generate the fluoro-carbonate ester. The method is simple in reaction process, high in reaction yield and easy for industrial production.

The invention relates to a preparation method of 4-benzyl piperazi ethyliminumacyl (formimidoyl benzol) hydrazine compounds, and specifically relates to a method for preparing a compound of the following formula I or its pharmaceutically acceptable salts or solvates, wherein, R1, R2, R3 and R4 are respectively selected from hydrogen atom, hydroxyl, halogen, C1-8 alkenyl, C1-8 alkyl and sulfonamido. The method comprises the step of: (1) in a suitable organic solvent, reacting hydrazine hydrate with the compound of formula 1a so as to obtain the compound of formula 1b; (2) with the existence of alkali, reacting 2-chloracetyl iminoiacetate hydrochloride with the compound of formula 1b in a suitable organic solvent so as to generate the compound of formula 1c; (3) in the presence of alkali and in a proper organic solvent, reacting the compound of formula 1c with the compound of formula 1d, thus obtaining the compound of formula I. The method of the invention is characterized by security, simplicity and convenient operation.

The invention relates to a synthetic method of fluoro ethylene carbonate. The synthetic method is characterized by comprising the following steps: carrying out halogen exchange reaction of fluoro ethylene carbonate as a starting material and a potassium fluoride fluridizer in an organic solvent; and using cyclodextrin as a phase transfer catalyst and quickly converting the mixture into the fluoro ethylene carbonate in the reaction. The synthetic method provided by the invention is simple in process and high in selectivity, and the yield can reach over 93%.

The invention discloses a method for preparing a carbon-based electrocatalyst from an insect wing. The method comprises the following steps of performing hydrothermal treatment on the insect wing, performing drying or freezing and drying, performing high-temperature carbonization in a mixed gas atmosphere containing a nitrogen source at 500-2,000 DEG C, performing acid picking, and performing secondary calcination at 500-2,000 DEG C to obtain a carbon-based material; dispersing the carbon-based material in ethyl alcohol containing a perfluorinated acid solution, and performing ultrasound for 5-60 minutes to obtain an uniform electrocatalyst solution; dropwise adding the electrocatalyst solution onto an electrode, and performing drying to prepare the carbon-based electrocatalyst. The carbon-based electrocatalyst has the advantages of simple preparation process, low cost and good environmental friendliness, is convenient to operate, and also has excellent electrocatalysis oxidization-reduction activity, and a new solution scheme is provided for achieving function guidance design and performance optimization of a novel carbon-based material.

The invention provides a synthesis technology of 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)pyrazole. The technology includes the following steps that firstly, nitrosyl sulfuric acid is added into a reaction kettle and stirred, and a mixed solution of 4-amino-3,5-dichlorobenzotrifluoride and acetic acid is added dropwise, and a heavy nitrogen solution is obtained; secondly, water and ethyl 2,3-dicyanopropionate are added into another reaction kettle, the heavy nitrogen solution is added, the mixture stands still and layers, the upper layer is a waste alkaline water layer, and the bottom layer is a material layer; thirdly, chlorobenzene is extracted; fourthly, waste alkaline water is added into an ammoniation kettle and cooled, and the material layer and the chlorobenzene extract are added; fifthly, ammonia water is added, heat is preserved, the mixture stands still and layers, the upper layer is reused, and the bottom layer is a material layer; sixthly, water is added to wash the material layer, stirring is conducted, and the mixture stands still and layers; seventhly, material liquid is conveyed to a crystalization kettle, stirred, cooled, centrifuged, spun and dried to obtain the finished product. The process route is simple, a synthesis device is simple, the synthesis raw materials and the synthesis technology are environmentally friendly, synthesis cost is low, the product yield is high, production cost is effectively reduced, energy conservation and consumption reduction are achieved, and cost is reduced.

The invention discloses a method for effectively inhibiting the discolorment of vinylene carbonate, comprising the following steps of: carrying out reflow reaction on vinylene carbonate in the presence of solid organic amine with the alkalinity of 7-10 and a solvent with the boiling point of 40-80 DEG C in the temperature range of 40-80 DEG C; then filtering to obtain a mixture containing the vinylene carbonate; and carrying out rectification under vacuum on the mixture and collecting fraction to obtain the required vinylene carbonate. The invention can be widely suitable for inhibiting the discolorment of the vinylene carbonate.

The invention discloses a chromene [2,3-b] quinoline derivative. The structure formula of the derivative is as shown in the specification, in the formula, R1 is any one of H, CH3O, C1 or (CH3)3C; R2 is H or CH3; R3 is H, CH3 or Ph. The derivative is synthesized at one step from 2-chloroquinoline-3-formaldehyde or a derivative thereof, malononitrile and 1,3-cyclohexanedione or derivatives thereof as raw materials. The derivative is simple and rapid in synthesis process route and gentle in condition, and the total yield is up to 61% or greater. Pharmacology experiment of the compound disclosed by the invention shows that the derivative has a relatively good in-vitro inhibition multiplication function upon a human liver cancer cell system HepG2, has a function of inhibiting tumor cell growth and can be applied to preparation of anti-tumor medicines.

The invention belongs to the technical field of waterproofing of buildings, and discloses a high polymer waterproofing agent and a synthesis method and an application thereof. The preparation method comprises the following steps: feeding polyethylene glycol, oleic acid and p-toluenesulfonic acid to a reaction kettle, and heating to obtain oleic acid polyglycol ester; dissolving oleic acid polyglycol ester and acrylic acid into water; evenly dropwise adding an ammonium persulfate solution; neutralizing the system after heat preservation for a certain period of time, so as to prepare the waterproofing agent. The high polymer waterproofing agent is capable of cutting off and sealing capillary tubes on a mortar surface in the cement solidification process, and reducing gaps in mortar, so as to effectively increase the waterproofness of the mortar system. The waterproofing agent disclosed by the invention does not contain chloridion; the compressive strength of the mortar is improved by reducing water consumption; the defects that a traditional waterproofing agent easily corrodes a reinforcing steel material, and negatively affects the strength of cement mortar are effectively overcome.

The invention discloses a preparation method for propyl isocyanate-based motomi (trimethylsilanolate) silane. Preparation steps include using 3- isocyanate propyl alkoxy silane, hexamethyldisiloxane, sulfuric acid or trifluoromethanesulfonic acid as a catalyst; heating, stirring and reacting; extracting generated saturated alkoxy trimethyl silane at the constant pressure in a reaction process; and detecting reaction finished conditions by gas chromatography and obtaining the 3- isocyanate propyl (trimethylsilanolate) silane by means of reduced pressure distillation. The preparation method in the technical scheme has the advantages that a synthesizing process path is simple, raw materials are cheap in price and easy to obtain, are toxic-free and do not cause explosion easily, formed solid and liquid waste residues are basically free of environmental pollution, after rectification purification of the 3- isocyanate propyl (trimethylsilanolate) silane, the purity of the 3- isocyanate propyl (trimethylsilanolate) silane is higher than 95%, and the yield of the 3- isocyanate propyl (trimethylsilanolate) silane is higher than 85%.

The present invention discloses the new synthesis process of cefpirome and its analog, and prepares cefpirome and its analog with 7-phenacetylamino-3-chloromethyl cephalo olefine acid p-methoxybenzyl ester as material and through certain technological process. The synthesis process has the advantages of cheap iodinating reagent, simple synthesis path, convenient operation, high yield and low cost.

The invention discloses a preparation method of reproducible SiO2/PAM core-shell composite nano antibacterial particles. The preparation method comprises the following steps: by regulating and controlling a dispersed state of nano SiO2, and carrying out charged treatment, assembling cation PAM and anion PAM on the surface of the nano SiO2 respectively in sequence; taking TEOS as a precursor, and carrying out hydrolysis, dehydration and condensation polymerization to prepare nano SiO2 particles; adjusting the pH value of a solution; grafting CPAM and APAM on the surface of the nano SiO2 through static self-assembling in sequence; washing with alcohol and drying in vacuum; and finally, treating the mixture in a sodium hypochlorite solution, and washing with alcohol and drying in vacuum to obtain a SiO2/halamine nano composite antibacterial material. A synthesis process disclosed by the invention has a simple preparation route; the preparation is convenient, reaction conditions are moderate and the production cost is low, so that the process is easy to popularize and apply; and the synthesized antibacterial composite nano particles have a novel structure and reproducible antibacterial efficient spectrum and antibacterial function, and have wide application.