15 results about "Pentamine" patented technology

The present application relates to a kind of carbon dioxide mineralization method and carbon dioxide mineralization device.The carbon dioxide mineralization method includes the following steps: mixing absorption liquid and industrial solid waste at room temperature, obtain mortar;Make mortar solid-liquid separation, obtain clear liquid and thick slurry;Carbon dioxide in flue gas is absorbed by clear liquid, obtain carbon-rich absorption liquid;Carbon-rich absorption liquid and thick slurry occur mineralization reaction at 180 DEG C-220 DEG C, obtain mineralized slurry;Make mineralized slurry solid-liquid separation, obtain mineralized ash and mineralized clear liquid;Wherein, absorption liquid includes inorganic base and organic base, organic base includes monoethanolamine, diethanolamine, triethanolamine, 3-methylaminopropylamine, N-methyl diethanolamine, piperazine, diethylene triamine, triethylene tetramine, tetraethylene pentamine and 2-amino-2-methyl-1-propanolamine at least two kinds.The method greatly improves CO2 capture rate and CO2 utilization rate, and organic base consumption is less, absorption liquid regeneration energy consumption is low, and overall economy is good.

The invention provides an environment-friendly low-chlorine wet strength agent and a preparation method and application thereof.The preparation method comprises the steps that adipic acid and tetraethylenepentamine are mixed and react for 2-6 h at the temperature of 170-190 DEG C, and a prepolymer is obtained; cooling the prepolymer to 120-140 DEG C, adding a modifier, carrying out a heat preservation reaction for 2-3 h, and adding deionized water to adjust the solid content to 55-65% so as to obtain a modified polyamide solution; adding a cationizing agent and epoxy chloropropane into the modified polyamide solution, heating to 65-75 DEG C, reacting, and adding acid to adjust the pH value to 2.5-4.5 when the viscosity of the system reaches 50-80 mPa.s; adding sodium hydrogen sulfite, and carrying out heat preservation reaction for 1-2 hours; and adding deionized water to adjust the solid content to 12-13%, thereby obtaining the environment-friendly low-chlorine wet strength agent. The specific modifier is adopted to modify a polyamide main chain, and the cationizing agent is introduced, so that the prepared wet strength agent not only can remarkably reduce the content of organic chlorine in a product, but also can improve the dry and wet strength, water resistance and folding resistance of paper. In addition, the product can also shorten the curing time of the paper.

A polymeric adsorbent including a polymer having reacted units of a tetraethylenepentamine (TEPA), reacted units of a 3,5-diacrylamidobenzoic acid, and reacted units of a methacrylamide. The TEPA, the 3,5-diacrylamidobenzoic acid, and the methacrylamide have a molar ratio of 2 to 4:1 to 3:0.5 to 2. Reacted units of the TEPA and reacted units of the 3,5-diacrylamidobenzoic acid are covalently crosslinked, and reacted units of the TEPA and reacted units of the methacrylamide are covalently crosslinked. The polymeric adsorbent of the present disclosure can be used for water treatment.

A method of cleaning a fouled reverse osmosis (RO) membrane using a comb-shaped polymer which includes dissolving the comb-shaped polymer and a base in water to form a solution, contacting the fouled RO membrane with the solution to produce a cleaned RO membrane. The comb-shaped polymer includes reacted units of poly(isobutylene-alt-maleic anhydride) and an oligoethylene amine where, the oligoethylene amine is triethylenetetramine, tetraethylene pentaamine, or pentaethylenehexamine.

This invention relates to the field of wet-process phosphoric acid separation and purification technology, specifically disclosing a phosphoric acid extraction apparatus and method based on tetraethylenepentamine. The apparatus includes a reaction tower, a waste liquid diversion system, a TEPA solution diversion system, and a concentration tank. The waste liquid diversion system includes a waste liquid tank for storing phosphoric acid waste liquid to be treated, a heating pipe installed in the tank, a waste liquid pump connected to the waste liquid tank, and a waste liquid main pipe connected to the pump outlet. The TEPA solution diversion system includes a TEPA solution tank for storing tetraethylenepentamine solution, a TEPA solution pump connected to the tank, and a TEPA solution main pipe connected to the pump outlet. The waste liquid main pipe and the TEPA solution main pipe are respectively connected to the reaction tower. The concentration tank is connected to the bottom of the reaction tower through a guide pipe and is used to receive and concentrate the phosphoric acid solution from which metal ions have been removed. This apparatus, through its integrated diversion and reaction structure, achieves efficient complexation removal of metal ions from low-concentration impurity-containing phosphoric acid waste liquid and continuous recovery of phosphoric acid, and has the advantages of compact process, simple operation, and high extraction efficiency.

The application relates to the technical field of printing and dyeing fixing agents, and particularly discloses a formaldehyde-free fixing agent and a preparation method thereof. The formaldehyde-free fixing agent is prepared from raw materials in the following proportions by weight: dimethyl diallyl ammonium chloride 81-162 parts; acrylamide 9-18 parts; ammonium persulfate 5-7 parts; epichlorohydrin 55-105 parts; tetraethylenepentamine 9-18 parts; triethylamine 4.5-9 parts; dimethylamine 9-18 parts; water 90-120 parts; triallylamine 0.5-1 part; the dimethyl diallyl ammonium chloride, the acrylamide, the ammonium persulfate and the epichlorohydrin are used for preparing product A; the tetraethylenepentamine, the triethylamine, the dimethylamine and the epichlorohydrin are used for preparing product B; the product A, the product B, the water and the triallylamine are mixed to obtain the formaldehyde-free fixing agent. The formaldehyde-free fixing agent of the application can balance the permeability and the reaction film-forming property after application, and has excellent fixing performance.

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.

This invention discloses a hyperbranched polyamide modifier, a modified melamine-formaldehyde resin, and their applications, belonging to the technical field of melamine-formaldehyde resin modification. The modifier is prepared from tetraethylenepentamine, ethylenediaminetetraacetic acid (EDTA), a catalyst, and water; the molar ratio of tetraethylenepentamine to EDTA is 1:(0.3-1); the amount of catalyst is 0.5-1.5 wt% of the total mass of tetraethylenepentamine and EDTA. The hyperbranched polyamide modifier prepared by this invention is compatible with melamine-formaldehyde resin, improving toughness and appropriately reducing formaldehyde release.

The invention relates to difunctional powder as well as a preparation method and application thereof. The chemical composition of the difunctional powder is amino modified porous alumina. According to the bifunctional powder, high-specific-surface porous alumina rich in hydroxyl groups on the surface is used as a matrix, amino groups are anchored by virtue of the self pore structure and the hydroxyl groups, and amine sources are diamine components of tetraethylenepentamine (TEPA) and polyethyleneimine (PEI). Absolute ethyl alcohol is adopted as a solvent, and a diamine composite solution is prepared; the difunctional powder is prepared by adopting an ultrasonic dispersion auxiliary impregnation method in combination with cross-linking curing vacuum drying. In complex flue gas containing 500 ppm of SO2 and 500 ppm of NO2 and containing H2O with the moisture content smaller than or equal to 5 vol.%, the capacity of adsorbing and capturing NO2 and the capacity of adsorbing and capturing SO2 at the temperature of 70 DEG C respectively reach 1.65 mmol / g and 1.01 mmol / g. And a key technical support is provided for industrial low-cost collaborative treatment of SO2 and NO2.

The application relates to the technical field of ceramic tiles, and particularly discloses a high-strength ceramic tile and a preparation method thereof. The high-strength ceramic tile is mainly made of the following raw materials in parts by weight: 20-30 parts of sodium feldspar, 15-25 parts of potassium feldspar, 10-20 parts of coal gangue, 2-8 parts of dolomite, 10-20 parts of kaolin, 5-15 parts of bentonite, 3-5 parts of superfine silicon powder, 3-5 parts of superfine titanium white powder, 1-3 parts of modified pre-oxidized fiber, and 0.2-0.8 parts of a dispersing agent; the modified pre-oxidized fiber is obtained by grafting acetoxypropyltrimethoxysilane and tetraethylenepentamine onto pre-oxidized fiber. The ceramic tile has the characteristics of high breaking strength, high modulus of rupture and high wear resistance, exhibits good comprehensive performance, and meets market demands.

This invention relates to a halogen-free flame-retardant polyamide material for low-voltage circuit breaker housings. The halogen-free flame-retardant polyamide material comprises the following components in parts by weight: polyamide, star-shaped polyamide, modified glass fiber, montmorillonite, halogen-free flame retardant, and additives. The star-shaped polyamide is a hyperbranched polyamide derivative having multiple amino end groups. The modified glass fiber is gluconic acid-modified glass fiber. This invention obtains a star-shaped polyamide with a hyperbranched structure containing a large number of amino groups through free radical polymerization of tetraethylenepentamine and acrylate. Simultaneously, gluconic acid is used to treat the glass fiber, introducing gluconic acid into the modified glass fiber. This improves the compatibility between the glass fiber and montmorillonite, polyamide, etc., resulting in a tighter bond between the modified glass fiber and other components.

The present application relates to the technical field of agricultural biological control, and discloses a kind of biological control composite microbial inoculant and its application, comprising: with natural biological base compound vanillin and vanillic acid as main raw material design and synthesis biodegradable tri-aldehyde monomer, and biodegradable tri-aldehyde monomer and p-phenylenediamine as organic building unit assembly form ordered porous crystal structure, obtain biodegradable COF material;Using impregnation adsorption method, the basic composite microbial inoculant that Bacillus thuringiensis, Bacillus subtilis and Streptomyces wareni are composed is loaded on biodegradable COF material, by tetraethylene pentamine and tannic acid copolymerization coating on its surface form degradable polytannic acid layer, prepared slow-release type composite microbial inoculant, its effective active component can be slowly released, can significantly improve the effective period and utilization rate of composite microbial inoculant, and to fusarium oxysporum and botrytis cinerea and other pathogenic fungi show obvious inhibitory effect, can be applied in the prevention and treatment of plant diseases.

The present disclosure provides a filtration membrane. The filtration membrane includes a thermoplastic substrate, a first layer comprising a polysulfone, a polyvinylpyrrolidone, and a pentaamine, and a second layer comprising the pentaamine and reacted units of a phthaloyl chloride cross-linked to form a polyamide. A method of preparing the filtration membrane by impregnating pentaamine in an ultrafiltration support matrix for rapidly fabricating a hyper-cross-linked polyamide membrane is also disclosed. The membrane prepared by the method of present disclosure can be used for organic solvent nanofiltration (OSN).

The present application relates to a kind of amine functionalized porous MgO / ZrO2 Composite adsorbent, tetraethylene pentamine is loaded to porous MgO / ZrO2 Composite adsorbent by impregnation method, and the amine functionalized composite adsorbent with high adsorption capacity obtained by drying has high adsorption capacity.The amine functionalized porous MgO / ZrO2 Composite adsorbent prepared in the present application has good selective adsorption performance for carbon dioxide under normal pressure.

The invention relates to the technical field of high polymer materials, and particularly discloses a preparation method and application of a high-toughness polylipoic acid supramolecular material, the high-toughness polylipoic acid supramolecular material comprises eugenol and polyamine, the polyamine is tetraethylenepentamine, the high-toughness polylipoic acid supramolecular material further comprises a DL alpha-lipoic acid monomer, and the molar ratio of the DL alpha-lipoic acid monomer to the eugenol to the tetraethylenepentamine is 5: 2: 1. The polylipoic acid solution is prepared by a high-temperature induction method, and the polylipoic acid supramolecular material is prepared from the polylipoic acid solution, eugenol and tetraethylenepentamine by a blending method, so that the toughness of the polylipoic acid is remarkably improved, the mechanical property of the material is improved, and the preparation process is simple and suitable for large-scale production.