68 results about "Polyethylene polyamine" patented technology

The application discloses a reverse demulsifier composition and relates to the technical field of oil and gas field development. The reverse demulsifier composition comprises 1-4 parts of castor oil and 3-8 parts of cationic polyether in terms of weight parts. The cationic polyether is prepared from a mass ratio of 1:20-80:10-40 of a starter, ethylene oxide and propylene oxide. The starter is prepared by addition reaction of a first monomer and a second monomer. The first monomer is one of polyethylene polyamine or aliphatic diamine. The second monomer is quaternary ammonium salt containing one olefinic bond or epoxy quaternary ammonium salt. The molar ratio of the first monomer to the second monomer is 1:0.2m-0.7m, and m is the number of active hydrogen in the first monomer. The reverse demulsifier composition has good demulsification effect and fast demulsification speed.

The invention belongs to the technical field of diesel additives, and particularly relates to an energy-saving and pollution-reducing composite diesel purification synergist and a preparation method thereof. The energy-saving and pollution-reducing composite diesel cleaning synergist is prepared from the following components in parts by weight: 15 to 20 parts of dialkyl polyene polyamine, 35 to 38 parts of polyether amine, 10 to 15 parts of oil-soluble polyether, 10 to 15 parts of an anti-friction agent, 10 to 15 parts of polyethylene polyamine, 4 to 6 parts of nitromethane, 20 to 25 parts of polyoxymethylene dimethyl ether, 5 to 12 parts of dimethyl carbonate and 12 to 15 parts of solvent oil. The diesel oil purification synergist has the advantages that the diesel oil purification synergist is added into diesel oil, and pollutant emission is reduced, fuel oil consumption is reduced, and the power effect is improved through the technical ways of optimizing the combustion process of a diesel engine, improving the circulation isovolumetric degree and the like.

The invention provides a compound for an oil-based drilling fluid viscosity reducer and the oil-based drilling fluid viscosity reducer. The preparation method of the compound for the oil-based drilling fluid viscosity reducer comprises the following steps: mixing polyethylene polyamine, alcohol amine and humic acid for reaction to obtain a first reaction intermediate; and reacting the first reaction intermediate with a fluorine-containing silane coupling agent to obtain the compound for the oil-based drilling fluid viscosity reducer, wherein the ratio of the amount of substance of the humic acid to the polyethylene polyamine to the alcohol amine to the fluorine-containing silane coupling agent is 1 to (0.5 to 0.75) to (0.01 to 0.5) to (0.5 to 5). The viscosity reducer for the oil-based drilling fluid comprises the compound for the viscosity reducer for the oil-based drilling fluid, a fluorine-containing surfactant and an oil-phase solvent in a mass ratio of 100: (10-50): (20-80). The oil-based drilling fluid viscosity reducer provided by the invention has excellent high temperature resistance.

The preparation method comprises the following steps that under the condition of antioxidant protection, polyenoic acid containing at least one allyl hydrogen and maleic anhydride are mixed and subjected to an Alder-Ene reaction for 5-12 h at the temperature of 160-240 DEG C, modified polyenoic acid is prepared, and the molar ratio of olefin functional groups in the polyenoic acid to maleic anhydride is 1.5: 1.0-2.0: 1.0; the modified polybasic carboxylic acid and polyethylene polyamine are subjected to a dehydration polycondensation reaction at the temperature of 160-190 DEG C, the molar ratio of terminal amino of the polyethylene polyamine to carboxyl of the modified polybasic carboxylic acid is 1.05: 1.0-1.40: 1.0, and modified polyamide is prepared; the modified polyamide is dissolved in water at the temperature of 50-100 DEG C to be diluted, the PH value is adjusted to be 5.0-9.0, and the halogen-free polyamide polyamine papermaking cylinder adhesive is prepared. Epoxy chloropropane is not used, the poison problem of chloropropanol and organic halogen is avoided, modified polycarboxylic acid serves as a cross-linking agent, and the adhesive has good binding power and has flexibility and film forming water resistance.

The invention belongs to the technical field of drilling fluid chemistry in the petroleum industry, and particularly relates to a high-temperature-resistant viscosity reducer as well as a preparation method and application thereof. The preparation method of the high-temperature-resistant viscosity reducer provided by the invention comprises the following steps: (1) adding vegetable oleic acid and polyethylene polyamine into a reactor, and reacting at a first temperature under the protection of inert gas to obtain a first intermediate; (2) reducing the temperature of the first intermediate to a second temperature, slowly adding anhydride, then heating to a third temperature, and continuously reacting to obtain a second intermediate; and (3) reducing the temperature of the second intermediate to room temperature, adding trimethylchlorosilane, reacting at a fourth temperature, and adding white oil for dilution after the reaction is finished, thereby obtaining the high-temperature-resistant viscosity reducer. The high-temperature-resistant viscosity reducer disclosed by the invention has an excellent temperature-resistant effect, and the viscosity reduction effect of the high-temperature-resistant viscosity reducer on an oil-based drilling fluid can still reach 20% or above after the high-temperature-resistant viscosity reducer is aged at 180 DEG C for 16 hours.

The invention relates to a chemical absorption liquid for removing methyl iodide and a preparation method thereof, and belongs to the technical field of underwriting. The chemical absorption liquid comprises the following raw materials in percentage by mass: 0.2-5% of sodium thiosulfate, 1-10% of long-chain alkyl trimethyl ammonium halide, 0-1% of sodium hydroxide, 0-10% of polyethylene polyamine and the balance of water. The number of long-chain carbon atoms in the long-chain alkyl trimethyl ammonium halide is greater than 8; the chemical absorption liquid is prepared by completely dissolving and uniformly mixing the components. According to the chemical absorption liquid, the long-chain alkyl trimethyl ammonium halide salt is introduced as a surfactant for the first time, has a solubilizing effect, and can greatly reduce the gas-liquid mass transfer resistance of methyl iodide, so that efficient absorption of radioactive and non-radioactive methyl iodide is realized; the chemical absorption liquid is not only suitable for normal temperature, but also suitable for high-temperature and high-humidity environments, and harmful gas can be purified in a solution washing or solution spraying mode.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

This invention relates to the field of nanofiltration membrane technology, and discloses a method for preparing a polysulfonamide and an acid-resistant composite nanofiltration membrane, as well as its application. The method for preparing the polysulfonamide includes reacting polyethylene polyamine, polyethyleneimine, and polysulfonyl chloride in contact. The composite nanofiltration membrane includes a bottom layer, an intermediate support layer, and a separation layer, wherein the separation layer is separation layer A or separation layer B; separation layer A is made of polysulfonamide with metal ions chelated on its surface; separation layer B is obtained by reacting polyethylene polyamine, polyethyleneimine, and polysulfonyl chloride in contact. The composite nanofiltration membrane of this invention can improve the desalination rate and acid resistance of nanofiltration membranes when used in water treatment.

The application discloses a hydrophilic polytetrafluoroethylene membrane and a preparation method thereof. The hydrophilic polytetrafluoroethylene membrane comprises a PTFE base film and a hydrophilic layer attached to the PTFE base film; raw materials of the PTFE base film comprise polytetrafluoroethylene dispersion resin, maleic anhydride copolymer and extrusion aid in a mass percentage ratio of 1:0.05-0.2:0.2-0.4, the maleic anhydride copolymer is a copolymer of olefin or aromatic hydrocarbon and maleic anhydride; raw materials of the hydrophilic layer comprise polyethylene polyamine solution and polyethylene imine solution, and a water wetting angle of the hydrophilic polytetrafluoroethylene membrane is less than 50 degrees. In the filtration process of etching waste liquid and stripping liquid, the hydrophilic polytetrafluoroethylene membrane disclosed by the application is not prone to accumulate dirt, can maintain relatively stable transmembrane pressure and keep stable filtration effect.

This invention relates to the field of polymer materials technology, specifically to a permanent antistatic ABS composite material based on polyethylene polyamine-aminated carbon nanotubes, its preparation method, and its application. The method includes: Step 1, basicizing carbon nanotubes; Step 2, mixing carboxylated carbon nanotubes, N,N'-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine, adding N,N-dimethylformamide solvent, and then adding polyethylene polyamine to obtain polyethylene polyamine-aminated carbon nanotubes; Step 3, grafting the polyethylene polyamine-aminated carbon nanotubes with a styrene-maleic anhydride copolymer to obtain styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes; Step 4, melting the styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes with ABS to obtain a permanently antistatic ABS composite material. This preparation method uses polyethylene polyamine to aminate carbon nanotubes, improving the antistatic effect and mechanical properties of the ABS composite material.

The invention relates to the technical field of metal working fluids, in particular to a magnesium alloy cutting fluid and a preparation method thereof. The magnesium alloy cutting fluid is prepared from the following components in parts by mass: 6 to 10 parts of alcohol amine, 3 to 6 parts of organic phosphonic acid, 2 to 4 parts of ether carboxylic acid, 1 to 3 parts of waterborne polyether, 2 to 4 parts of phosphate, 1 to 3 parts of special amine, 0.5 to 2 parts of siloxane ketone, 0.5 to 2 parts of waterborne silicone oil, 0.5 to 2 parts of chelating agent, 1 to 3 parts of polyethylene polyamine, 0.1 to 0.5 part of waterborne graphene extreme pressure agent, 0 to 1.2 parts of auxiliary agent and 65 to 85 parts of water. By compounding various lubricants and extreme pressure agents such as alcohol amine, ether carboxylic acid, water-based polyether, phosphate, siloxane ketone, water-based silicone oil and a water-based graphene extreme pressure agent, an effective lubricating film is formed in the cutting process, friction is reduced, cutting force is reduced, formation of built-up edges is inhibited, and the service life of a cutter is prolonged.

The invention discloses a filter element for deep dehydration and deacidification of natural gas and a preparation method of the filter element, and belongs to the technical field of natural gas filtration treatment.The filter element is characterized in that inert gas containing corrosive gas is introduced into a porous filter element through a gas phase corrosion method, so that the porosity of the porous filter element is increased, the adsorption capacity of the porous filter element is improved, and the adsorption capacity of the porous filter element is improved; the loading capacity on polyethylene polyamine is improved; the porous filter element is soaked in the organic solvent containing the polyethylene polyamine activating agent, so that the polyethylene polyamine activating agent is attached into the porous filter element, and the adsorption rate of polyethylene polyamine is increased; meanwhile, polyethylene polyamine is slowly deposited into the porous filter element through a gas phase corrosion method, so that molecules are more easily diffused into pores, the load is more uniform, and the load depth is deeper. According to the filter element disclosed by the invention, deep adsorption of moisture and acid gas in natural gas is realized through cooperation of physical adsorption and chemical adsorption, and the filter element can be recycled, so that the production cost is effectively reduced.

The invention relates to the field of lubricating oil, in particular to a phenolic ester antioxidant, a lubricating oil composition and preparation and application of the phenolic ester antioxidant and the lubricating oil composition. The preparation method of the phenolic ester antioxidant comprises the following steps: mixing alkylphenol and formaldehyde at 50-55 DEG C under the protection of nitrogen to synthesize a first intermediate; mixing the first intermediate and polyethylene polyamine at 50-55 DEG C under the protection of nitrogen to synthesize a second intermediate; mixing alkylphenol and triethyl phosphite, and synthesizing a third intermediate by taking anhydrous potassium carbonate as a catalyst; and mixing the second intermediate and the third intermediate, and synthesizing the phenolic ester antioxidant by taking anhydrous potassium carbonate as a catalyst. The phenolic ester antioxidant provided by the invention has excellent oxidation resistance and detergency and dispersibility, and can reduce the paint film formation tendency when the lubricating oil is used.

The invention relates to a phenolic resin polyethylene polyamine demulsifier as well as a preparation method and application thereof, and belongs to the technical field of oil and gas exploitation. The demulsifying agent comprises a modified four-block phenolic resin demulsifying agent and a seven-block polyether phosphate demulsifying agent, the modified four-block phenolic resin demulsifying agent can quickly achieve a demulsifying effect on shale oil, and the seven-block polyether phosphate demulsifying agent is long in demulsifying time and sufficient in later strength. The modified tetrablock phenolic resin demulsifier and the heptablock polyether phosphate demulsifier are compounded, so that the demulsification effect can be effectively improved, and the demulsification time can be effectively prolonged. For shale oil, the demulsifying and dehydrating agent can play a good demulsifying and dehydrating role, and the water content in the dehydrated oil is less than 3.0%.

The present invention relates to a demulsifier composition for complex heavy oil produced fluid and a preparation method thereof. A demulsifier composition for complex heavy oil produced fluid is composed of the following components, calculated by mass percentage: 5% to 10% of a cage-type capture agent, 30% to 40% of a demulsifier, 10% to 15% of a cationic surfactant, 5% to 15% of a small molecule auxiliary agent, and the balance is water. A preparation method for a demulsifier composition for complex heavy oil produced fluid comprises the following steps: (1) preparing a cage-type capture agent; (2) respectively weighing a formulated amount of a cage-type capture agent, a demulsifier, a cationic surfactant, a small molecule auxiliary agent and water into a reaction container, mixing and uniformly stirring, and then heating and stirring to obtain a demulsifier composition for complex heavy oil produced fluid. The present invention has the following beneficial effects: 1. It can reduce the viscosity of the oil phase, making the interfacial film easier to break; 2. Finally, the polyethylene polyamine-based demulsifier is adsorbed on the interfacial film, completely destroying the interfacial film.

The application belongs to the technical field of catalyst carrier preparation, and particularly relates to a modified catalyst carrier material and a preparation method thereof. The preparation process comprises the following steps: (1) preparing an aluminum salt mixed solution containing hydroxypropyl-beta-cyclodextrin; (2) preparing a partial aluminate mixed solution containing a polyethylene polyamine small molecule compound; (3) adding the partial aluminate mixed solution into the aluminum salt mixed solution to obtain a precursor; and (4) obtaining the modified catalyst carrier material after reaction, post-treatment and calcination. A certain amount of polyethylene polyamine small molecule compound is added as a template assistant in the hydroxypropyl-beta-cyclodextrin template system. The unique properties of the hydroxypropyl-beta-cyclodextrin and the polyethylene polyamine small molecule compound are utilized to guide the aluminum salt and the partial aluminate to form a precursor with a porous channel structure, and finally an alumina carrier with a high specific surface area and a large pore size is obtained through calcination.

The invention relates to the technical field of oil field demulsifiers, and particularly discloses a demulsifier for high-viscosity and high-wax-content shale oil and a preparation method of the demulsifier, and the demulsifier for the high-viscosity and high-wax-content shale oil comprises a modified tetrablock phenolic resin demulsifier and a modified phosphate demulsifier in a mass ratio of (3-5): 1; wherein the modified tetra-block phenolic resin demulsifier is a modified tetra-block phenolic resin demulsifier generated by carrying out polymerization reaction on a phenolic resin polyethylene polyamine polymer, ethylene oxide and epoxypropane; the modified phosphate ester type demulsifying agent is a seven-block polyether phosphate ester type demulsifying agent. According to the invention, a slightly oil-soluble demulsifier taking a phenolic resin tetraethylenepentamine polymer as an initiator is compounded with a modified phosphate type slightly oil-soluble demulsifier, and the slightly oil-soluble modified phosphate type demulsifier and the slightly oil-soluble demulsifier taking the phenolic resin tetraethylenepentamine polymer as the initiator are compounded in a multi-series and multi-proportion manner; the invention relates to a dehydration agent specially aiming at shale oil produced liquid treatment.

The invention belongs to the photovoltaic field, and particularly relates to a polyethylene polyamine salt interface passivation layer and a perovskite solar cell. The interface passivation layer comprises polyethylene polyamine salt, the polyethylene polyamine salt comprises one or more polyethylene polyamines with the chemical formula of H2N (CH2CH2NH) nH, n is selected from an integer of 2 to 5, and the polyethylene polyamine salt comprises one or more anions selected from halide ions, carboxylate ions, phosphonate ions and sulfonate ions. The polyethylene polyamine salt interface passivation layer provides more passivation sites, and the polyethylene polyamine salt is distributed in a tiled manner on the perovskite / electron transport layer interface, so that vertical accumulation of passivation molecules and blocking of electron transport cannot be caused, charge transport is improved, and the cell performance is improved.

The invention discloses bisphenol F type resin as well as a preparation method and application thereof, and relates to the field of electron microscope detection and analysis. The invention relates to an application of bisphenol F resin in electron microscope detection and analysis, in particular to an application of bisphenol F resin as an embedding medium in preparation of an electron microscope sample through polymerization at room temperature. And curing the embedding medium to obtain the electron microscope sample embedding block. The bisphenol F type resin comprises the following components: a bisphenol F type epoxy resin monomer, C12-14 alkyl glycidyl ether and polyethylene polyamine, and the mass ratio of the C12-14 alkyl glycidyl ether to the polyethylene polyamine to the bisphenol F type epoxy resin monomer is (10-40): (10-25): 100. The EPIKOTE 826 bisphenol F resin is low in price, does not absorb moisture, is suitable for biological tissue specimens, is low in viscosity, convenient to operate, small in shrinkage rate after curing, small in volume change before and after room-temperature polymerization, clear in ultrastructure observed by an electron microscope, complete in membrane structure and good in contrast under the electron microscope, a slice can tolerate electron beam bombardment, and an image does not drift; and the section can be observed without being stained.

The present application relates to the technical field of composite materials, and particularly relates to a nitrogen-doped carbon quantum dot composite film and a preparation method thereof.A specific technical scheme is as follows: a preparation method of a nitrogen-doped carbon quantum dot composite film, comprising the following steps: (1) using polyethylene polyamine as a nitrogen source combined with a carbon source to perform a hydrothermal reaction, and completing preparation of carbon quantum dots; (2) adding 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide and N-hydroxysuccinimide or N-hydroxylthiosuccinimide into a hydrophilic modified polymer composite film to perform a reaction, and after the reaction is completed, a nitrogen-doped carbon dot modified composite film is obtained, and the nitrogen-doped carbon dot modified composite film is stored by being immersed in water.The nitrogen-doping design makes the nitrogen-doped carbon dot composite film have a good effect in capturing and enriching persistent organic pollutants such as perfluorinated compounds, and has good application value for treatment of new pollutants in the environment.

The application discloses a polyethylene polyamine wastewater treatment and recovery device, and relates to the technical field of wastewater treatment.The polyethylene polyamine wastewater treatment and recovery device comprises a sedimentation tank, a treatment tank, a turnover mechanism and a deslagging mechanism.The turnover mechanism comprises a servo motor and a supporting module.The supporting module is installed at the middle of the bottom of the inner cavity of the treatment tank.A rotating shaft is rotatably installed at the middle of the top of the inner cavity of the treatment tank.The bottom end of the rotating shaft is fixedly installed with a cylinder.A turnover plate is fixedly installed at the middle of the outer cylindrical surface of the cylinder.An agitating assembly is installed at the rectangular opening of the outer cylindrical surface of the cylinder.The deslagging mechanism comprises a deslagging tank.The liquid inlet of the deslagging tank is connected with a liquid inlet square pipe.The liquid outlet of the deslagging tank is connected with a liquid outlet square pipe.The liquid inlet of the liquid inlet square pipe and the liquid outlet of the liquid outlet square pipe are both installed with a material guide hopper.A filtering assembly is installed at the middle of the deslagging tank.The polyethylene polyamine wastewater treatment and recovery device can realize the effect of graded treatment, can treat wastewater in stages, and can fully mix wastewater and treatment agents, so that the wastewater treatment effect is good.

The present application discloses a star-shaped heavy metal chelator with melamine as the core, and a preparation method and application thereof. Melamine is first reacted with formaldehyde under weak alkaline conditions to generate hexamethylol melamine. Before the hexamethylol melamine is further dehydrated and polycondensed, polyethylene polyamine is added to condense the hydroxymethyl groups with the amino groups or imino groups on the polyethylene polyamine and connect the polyethylene polyamine to the melamine. Then, the product is reacted with carbon disulfide in the presence of alkali to connect the --CSS － groups to the polyethylene polyamine branches, forming a structure with melamine as the core and six polyethylene polyamine branches containing multiple --CSS － groups distributed in a star shape. The product of the present application binds heavy metal ions on the molecule through chelation, and then aggregates and grows into micro-flocs through the connection of the melamine core, thereby significantly improving the chelation binding capacity and flocculation and precipitation performance of the heavy metal ions. The process of the present application is simple, the reaction conditions are mild, the operation is easy to control, the process is environmentally friendly, and the industrial production can be easily realized.

This invention belongs to the field of lubricating oil additives, specifically relating to a soot-dispersible polyisobutylene succinimide dispersant, its preparation method, and its application. The preparation method includes the following steps: (1) mixing polyisobutylene maleic anhydride, base oil, and aromatic solvent, stirring evenly, heating, adding polyethylene polyamine, introducing nitrogen gas, heating to the aromatic reflux temperature, and performing an amidation reaction to obtain product 1; (2) adding aminophenylboronic acid to product 1, continuing reflux, borizing reaction, removing the solvent by vacuum distillation, filtering, and obtaining the soot-dispersible polyisobutylene succinimide dispersant. The dispersant in this invention has the characteristic of good soot dispersion performance. The prepared product can improve the soot dispersion of oil products with a lower dosage. Moreover, the use of aminophenylboronic acid for borization reaction can improve high-temperature detergency. The preparation process of this invention is simple and easy to implement.

This invention relates to a sulfur dissolving agent, its preparation method, and its application, belonging to the field of oil and gas field chemicals technology. The sulfur dissolving agent of this invention is a high-efficiency sulfur dissolving agent for oil-water mixed phases with low density, long wellbore residence time, and rapid sulfur dissolution. The main function of the sulfur dissolving agent is to dissolve deposited sulfur; the foaming agent contains strongly polar functional groups such as hydroxyl and amino groups, which can be tightly oriented around the hydrophilic groups of the active agent molecules in the microbubble core, and, in conjunction with the foam stabilizer, can provide a densely structured coating for the microbubble core, thus protecting it; the foaming agent and foam stabilizer impart a low density to the sulfur dissolving agent. Due to its low density, the sulfur dissolving agent of this invention can reduce the amount of the main sulfur dissolving agent used, thereby reducing raw material costs. Using polyethylene polyamine and / or the compound shown in Formula I as the main sulfur dissolving agent can give the sulfur dissolving agent a lower odor and also protect the gas core and enhance the temperature resistance of the microbubbles.

The application discloses a kind of double cation type electromigration rust inhibitor, preparation method and application.The double cation type electromigration rust inhibitor described in the application generates intermediate under negative pressure condition with saturated fatty acid and polyethylene polyamine as raw material, and is reacted with quaternary ammonium reagent in organic solvent to obtain double cation type electromigration rust inhibitor.The number of carbon atoms of the saturated fatty acid described in the application is an integer of 3-31, and the quaternary ammonium reagent is XCH2(CH2) s OH or X (CH2) s COONa, wherein s is an integer of 1-15, and X is halogen element chlorine, bromine, iodine.The double cation type electromigration rust inhibitor described in the application can be internally doped in newly built concrete structure, adsorbed on the surface of steel bar to inhibit steel bar corrosion, and can also migrate to the interior of reinforced concrete through electric field effect to repair the corrosion of steel bar in existing structure, and has wide market application value.

The present invention relates to the technical field of solid propellants, and specifically discloses a polycyanide-polyhydroxy bonding agent, a preparation method, and its application in hydroxybutyl propellant. When preparing the bonding agent, acrylonitrile is added dropwise to polyethylene polyamine, and the temperature is raised to react to prepare an intermediate; then glyceric acid is added to the intermediate, the temperature is raised to carry out an amidation reaction, and then distilled until no liquid is distilled out to obtain the target bonding agent. The bonding agent has a polycyanide-polyhydroxy molecular structure, in which the hydroxyl groups can enter a cross-linked network through chemical bonding with toluene diisocyanate, and the cyano group can produce a strong physical adsorption effect with the surface of nitramine oxidant particles, and is used as a nitramine or nitramine-modified hydroxybutyl solid propellant system. After adding the bonding agent provided by the present invention to the solid propellant system, the room temperature, high and low temperature mechanical properties of the solid propellant are significantly improved.

The invention belongs to the technical field of coatings, and provides alkyd resin for color paste as well as a preparation method and application of the alkyd resin. According to the alkyd resin for the color paste, provided by the invention, polyamide polyamine, castor oil, polyhydric alcohol, polybasic acid and monobasic acid are adopted as main preparation raw materials, wherein the preparation raw materials of the polyamide polyamine comprise polyethylene polyamine, saturated dibasic acid and unsaturated monobasic acid. The alkyd resin in the color paste is directly improved, the prepared alkyd resin for the color paste is transparent and free of mechanical impurities, the viscosity (25 DEG C) is 35500-45000 cps, the acid value is 7.5-9.8 mgKOH / g, the amine value is 14.8-23.7 mgKOH / g, the alkyd resin for the color paste is further used for preparing the color paste, the color paste has the characteristics of no flocculation, no precipitation, no flooding and floating, capability of improving the gloss after film formation, stable color and uniform hue, no additional dispersing agent is needed, and the alkyd resin for the color paste is suitable for industrial production. The cost is saved.

The invention discloses an acid printed and dyed silk fabric resistant to machine washing and high in washing liquor staining fastness and a preparation process thereof, the acid printed and dyed silk fabric is soaked or padded with a color fixing agent and then treated by a cross-linking agent, and a polymer space net-shaped protective layer is formed on the surface of the fabric; the color fixing agent is a polyethylene polyamine compound or cationic quaternary ammonium salt; the cross-linking agent is an aziridine cross-linking agent or triglycidyl isocyanurate. According to the invention, a fixation composite cross-linking treatment technology is proposed for the first time, a macromolecular space net-shaped protective layer is formed under a low-temperature condition, and the washing liquor staining fastness (rating is more than 3 grade) and the machine washing resistance (the fabric after 10 times of machine washing is small in color change, free of obvious ash damage and color fading, and very good in color fastness to washing) of the acid dyed or printed silk fabric are remarkably improved. The fixation treatment process is simple and reliable, the staining fastness of washing liquor of the acidic silk fabric can be effectively improved at the low temperature of 30-40 DEG C, and the influence on the hand feeling and color of the fabric is very small.

The present invention discloses a filtering device for deep dehydration and deacidification of natural gas, which belongs to the technical field of natural gas filtering and processing. The device comprises a filter chamber, a first air inlet pipe, a second air inlet pipe, an air outlet pipe and a recovery air pipe. Natural gas is introduced into the filter chamber through the first air inlet pipe, and a filter is arranged in the filter chamber. A filter element in the filter realizes the coordinated chemical adsorption and physical adsorption through a porous filter element and loaded polyethylene polyamine, thereby realizing deep filtration and removal of impurity gases in the natural gas, realizing deep dehydration and deacidification of the natural gas, and discharging the filtered natural gas through the air outlet pipe, thereby reducing the corrosion of storage equipment by LNG in the later stage. At the same time, a heating component is arranged on the second air inlet pipe, so that heated inert gas is introduced to analyze the filter element, and the analyzed gas is discharged through the recovery air pipe, thereby realizing the recycling of the filter.

This invention belongs to the field of catalyst support preparation technology, specifically relating to a high-efficiency catalyst support material and its preparation method. This invention adds a certain amount of polyethylene polyamine small molecule compound as a template agent to a hydroxypropyl-β-cyclodextrin template system. Using hydroxypropyl-β-cyclodextrin and the polyethylene polyamine small molecule compound as template agents, aluminum salt and aluminate are guided to form a precursor with a porous structure, which is finally obtained by calcination to obtain an alumina support. Adding a portion of hydroxypropyl-β-cyclodextrin to the aluminate solution in advance acts as a buffer, reducing the influence of the polyethylene polyamine small molecule compound on the solution system, promoting a more complete and uniform reaction between the aluminum salt and aluminate, reducing the direct interaction of interparticle hydrogen bonds, thereby effectively preventing hard agglomeration caused by capillary forces and increasing the specific surface area and pore size of alumina.