60 results about "Quaternary amine" patented technology

The application provides a kind of zinc oxide nanoparticles / quaternary amine modified polystyrene nanospheres and its preparation method and application.The application prepares carboxyl functionalized PS / PVP nanospheres with high monodispersity by environmentally friendly water dispersion polymerization method;ZnONPs are successfully loaded after complexing zinc ions with the surface PVP pyrrolidone ring of PS / PVP nanospheres and reducing with reducing agent, and the surface of nanospheres is modified with quaternary amine groups by amidation and further quaternary amination of the surface carboxyl groups of PS / PVP nanospheres.The preparation method is simple, and the reaction condition is easy to realize.The material obtained by the method of the application is polystyrene nanosphere surface loaded with zinc oxide nanoparticles and grafted with quaternary amine groups;it is applied to antibacterial, and zinc oxide nanoparticles and quaternary amine groups play a synergistic effect, so that the material shows high antibacterial activity and can effectively inhibit the proliferation of escherichia coli and staphylococcus aureus.

The invention relates to an anion exchange membrane containing a composite film of an ionomer and zirconium oxide particles of formula ZrO2, the ionomer being a block polymer of formula (AB)nA, the symbol A representing a polyvinylaromatic block bearing quaternary amine groups, the symbol B representing a hydrogenated block of a poly(1,3-diene) or a copolymer comprising monomer units of a 1,3-diene and a vinylaromatic monomer, n being an integer equal to or greater than 1, the zirconium oxide particle content of the composite film being greater than 40% by mass of the composite film mass, the zirconium oxide particles having a median volume size, D50, greater than 100 nm and less than 1 µm. The membrane exhibits good plasticity.

The preparation method comprises the following steps: mixing a lithium source material, water, a first solvent and quaternary amine alkali, reacting the quaternary amine alkali with carbon dioxide in a reaction atmosphere containing carbon dioxide to generate HCO3 <->, reacting the HCO3 <-> with lithium ions in the lithium source material to generate lithium bicarbonate, and collecting a water phase after the reaction; decomposing lithium bicarbonate in the water phase to generate lithium carbonate, collecting a solid phase, and decomposing lithium carbonate in the solid phase to generate lithium oxide to obtain an intermediate; dissolving quaternary ammonium iodide in a second solvent, adding the intermediate, converting the lithium oxide into lithium hydroxide, carrying out ion exchange on the lithium hydroxide and the quaternary ammonium iodide to generate lithium iodide, and collecting a liquid phase; and collecting the lithium iodide in the liquid phase. According to the present invention, based on the characteristics of the specific quaternary ammonium base and the quaternary ammonium iodide salt, the Li in the lithium source material is selectively reinforced, carbonized and leached, the anion impurities in the lithium source material are removed, the anion exchange in the organic phase is achieved, and the high-purity anhydrous lithium iodide is prepared.

The application discloses a low-molecular-weight hydrophobic associating polymer, and a molecular formula of the low-molecular-weight hydrophobic associating polymer is: wherein R is erucylamide propyl dimethyl quaternary amine, hexadecyl dimethyl quaternary amine, octadecyl dimethyl quaternary amine or behenyl dimethyl quaternary amine, x, y, z and m are monomer molar ratios, x is 69% to 80%, y is 16% to 23%, z is 3.5% to 7%, and m is 0.5% to 1%. The application further discloses a preparation method and application of the low-molecular-weight hydrophobic associating polymer. The fracturing fluid prepared from the low-molecular-weight hydrophobic associating polymer has excellent hydrophobic associating performance, shows the characteristics of low viscosity and high elasticity, can simultaneously meet the construction requirements of strong sand carrying capacity and easy pumping, and has a good application prospect in oilfield fracturing.

The present disclosure provides compositions and methods for sample processing, particularly for oligonucleotide analysis e.g. analysis of formulated nucleic acid drugs. A composition for pretreating at least one target nucleic acid in a biological mixture provided herein includes a chaotropic agent selected from a substituted guanidine, a substituted amidine, a substituted quaternary amine, or a combination thereof, an optional protease, and / or an optional disulfide-reducing agent. Methods of analyzing at least one target nucleic acid in a biological mixture is also provided herein. Furthermore, the present disclosure provides methods for quantifying at least one target cationic lipid interacting with a nucleic acid.

Described herein are wound dressings and methods of their use, wherein the wound dressings comprise a polymeric component. The polymeric component is a polyethyleneimine intermediate selected from the group consisting of:at least one R60 is —(CH2)3OH but less than 50% of all R60 are —(CH2)3OH; and the polyethyleneimine intermediate has a ratio of total quaternary amines to total hydroxyl groups of at least 1:1.

A product for adsorbing one or more PFAS from a liquid is disclosed. The product may comprise attapulgite or sepiolite that has been surface functionalized with (a) a quaternary amine surface coating solution that comprises a mono-quaternary amine compound or a di-quaternary amine compound and (b) a mercapto surface coating solution that comprises a surface coating agent that includes one or more mercapto groups that chemically bond to the attapulgite or sepiolite surface. When the quaternary amine surface coating solution includes the mono-quaternary amine compound, the product is free of di-quaternary amines. When the quaternary amine surface coating solution includes the di-quaternary amine compound, the product is free of mono-quaternary amines. Also disclosed is a method of producing the product and a method of adsorbing a PFAS in a liquid using the product.

The present application relates to a kind of aluminum alloy cleaning agent and its preparation method and application, aluminum alloy cleaning agent includes by weight percentage: chelating agent 0.1-0.5%, surfactant 4-8%, cleaning additive 6-12%, monobasic acid 5-10%, solubilizing agent 3-5%, the rest is water;Its advantages are that, using different surfactant fatty acid methyl ester ethoxylate and C9-11 ethoxylated alcohol: coconut alkyl quaternary amine ethoxylate mixture compound use, give consideration to wetting, emulsification, oil removal etc., not only clean thoroughly to the oil dirt on the surface of aluminum alloy, and the cleaning agent of the present application does not add aluminum corrosion inhibitor, strong alkali additive, does not contain phosphorus and silicon, friendly to environment, no corrosion to aluminum alloy, no residue, will not affect the performance of aluminum alloy, reduce the harm to human body, and wastewater treatment pressure, in the application of cleaning oil dirt on the surface of aluminum alloy and improving the service life of aluminum alloy cleaning agent has important value.

This invention discloses an imidazoline Schiff base corrosion inhibitor, its preparation method, and its application, relating to the field of anti-corrosion coatings for oil well metal pipes. The method involves reacting a heterocyclic carboxylic acid with an organic polyamine to obtain an imidazoline reactant; reacting the imidazoline reactant with iodobutane to obtain a quaternized modified reactant; and reacting the quaternized modified reactant with cinnamaldehyde to obtain the corrosion inhibitor. The three molecular groups present in the corrosion inhibitor of this invention can exert a synergistic effect, exhibiting good corrosion inhibition performance under strong acid and high-temperature conditions. The corrosion inhibitor of this invention can be applied to protect oil and gas field casing materials from corrosion during oil and gas field development, thereby ensuring the smooth production and development of oil and gas resources at a lower economic cost.

The application relates to the technical field of anion exchange membrane preparation, in particular to a PyPECH / PVA / PI diffusion dialysis acid recovery anion exchange membrane based on a crosslinked network structure, a preparation method and application thereof. PVA, PI and polyepichlorohydrin (PECH) are stirred in dimethyl sulfoxide to form a uniform mixture, then the mixture is coated on glass and placed in an oven at 80 DEG C for 48 hours to form a film by evaporation. The prepared film is immersed in a bipyridine reagent for 8 hours, then the bipyridine on the surface of the film is washed away, both sides of the film are covered with a polytetrafluoroethylene film, a flat plate heating machine is used to keep the temperature at 80 DEG C under a pressure of 1 Mpa, and crosslinking and quaternary amination reaction is carried out for 8 hours. After the reaction is completed, the film is taken out after being cooled to room temperature, and the film is cleaned with deionized water. After drying, the film is heated to 120 DEG C in an oven, then the temperature is lowered by 10 DEG C every 2 hours until the temperature is lowered to room temperature, the film is taken out, and the above steps are repeated three times to prepare the anion exchange membrane. The prepared anion exchange membrane has excellent dimensional stability and diffusion dialysis performance.

Compositions and methods for dyeing aramids include one or more dye carriers selected from dialkyl imidazolium salts having a cation of the general formula: where R1 and R2 are, independently, selected from C1 to C8 alkyl, and bis-quaternary amine salts having a cation of the formula: where R1 is, independently at each instance, a C1-C6 alkyl; R2 and R3 are, independently at each instance, a C1-C6 alkyl or substituted C1-C6 alkyl, and X is, independently at each instance, a halogen; and one or more cationic dyes.

A preparation method of lithium iodide and a solid-state battery, the preparation method comprising mixing a lithium source material, water, a first solvent and a quaternary amine base, reacting the quaternary amine base with carbon dioxide under a reaction atmosphere containing carbon dioxide to generate HCO3 ‑ , HCO3 ‑ reacting with lithium ions in the lithium source material to generate lithium bicarbonate, collecting an aqueous phase after the reaction; decomposing the lithium bicarbonate in the aqueous phase to generate lithium carbonate, collecting a solid phase, decomposing the lithium carbonate in the solid phase to generate lithium oxide to obtain an intermediate; dissolving a quaternary ammonium iodide salt in a second solvent and adding the intermediate, converting the lithium oxide into lithium hydroxide, and performing ion exchange between the lithium hydroxide and the quaternary ammonium iodide salt to generate lithium iodide, collecting a liquid phase; and collecting the lithium iodide in the liquid phase. Based on the characteristics of the specific quaternary amine base and the quaternary ammonium iodide salt, the application selectively enhances carbonization leaching of Li in the lithium source material, removes anion impurities in the lithium source material, and also realizes anion exchange in an organic phase and preparation of high-purity anhydrous lithium iodide.

This invention belongs to the field of antibacterial materials technology, specifically relating to a urethane quaternary ammonium salt, its preparation method, and its application. The preparation method includes the following steps: reacting a compound containing a -NH-COO- group with a haloalkane under the action of a catalyst to undergo a quaternization reaction, thereby obtaining the urethane quaternary ammonium salt. The preparation method of this invention is simple, low in cost, and the obtained quaternary ammonium salt antibacterial agent exhibits good antibacterial properties.

The invention provides a modified oleic acid imidazoline-sodium silicate hybrid composite corrosion inhibitor as well as a preparation method and application thereof, and belongs to the technical field of chemical corrosion prevention of oil and gas fields. The preparation method of the corrosion inhibitor comprises the following steps: carrying out condensation reaction on oleic acid and diethylenetriamine in the presence of a water carrying agent xylene and a catalyst p-toluenesulfonic acid to obtain oleic acid imidazoline; in isopropanol, under the catalysis of potassium iodide, oleic acid imidazoline and chlorododecane are subjected to quaternization modification reaction to obtain oleic acid imidazoline dodecyl quaternary ammonium salt; in water, under the action of a cross-linking agent epoxy chloropropane, the oleic acid imidazoline dodecyl quaternary ammonium salt and sodium silicate are subjected to a cross-linking hybridization reaction to obtain the product. The stability is remarkably improved through quaternization modification of the organic oleic acid imidazoline, the organic oleic acid imidazoline and the inorganic sodium silicate are hybridized and crosslinked to form the hybrid composite corrosion inhibitor, synergistic coverage of an organic adsorption film and an inorganic deposition film is achieved, the corrosion rate is remarkably reduced, and the corrosion inhibition performance and environmental adaptability of the corrosion inhibitor are improved.

The invention provides a chromatographic method for separating pre-contraction state PVC Nanosyringes from post-contraction state PVC Nanosyringes, the method comprising: (a) providing a sample containing both pre- and post-contraction state PVC Nanosyringes; (b) loading the sample on a monolith anion exchange column having (preferably quaternary amine) binding moieties, under conditions (e.g. pH 7-8, temperature 19-25°C) wherein pre- and post-contraction state PVC Nanosyringes become bound to the column with differing affinities; (c) applying a gradient of ionic strength to the column that provides for differential elution of the pre- and post-contraction state PVC Nanosyringes, wherein the gradient is generated by incrementally (e.g. linearly) increasing the salt concentration of a mobile phase elution buffer that is applied to the column; and (d) eluting the pre- and post-contraction state PVC Nanosyringes into separate elution fractions under the gradient based on their differing affinities to the anion exchange column, and collecting fractions having the pre-contraction state PVC Nanosyringes separated from the post-contraction state PVC Nanosyringes.

[Problem] To provide: an epoxy resin composition which has excellent impregnation into reinforcing fibers, enables high-order control of the crosslinked structure of a cured object, and achieves both high elastic modulus and high toughness; and a fiber-reinforced composite material in which a decrease in TgH / W with respect to TgDRY is inhibited, and which has excellent water resistance even in a severe environment, can be used over a long period, and exhibits high mechanical characteristics. [Solution] The epoxy resin composition comprises the following components (A) to (D), wherein the component (C) includes a chloride as an anion species. (A) an epoxy resin; (B) an acid anhydride; (C) a quaternary amine salt and / or a quaternary phosphonium salt; (D) core / shell rubber particles.

To provide compositions that include one or more of compounds that may be useful for electronics processing (e.g., semiconductor processing composition), cleaning, stripping, degreasing, or a combination of two or more thereof.SOLUTION: Provided is a composition comprising a tertiary amine and / or quaternary ammonium compound of Formula I and / or Formula II, or a combination thereof. The compounds of Formula I and / or Formula II may be useful as low-toxicity substitutes for tetramethylammonium hydroxide.SELECTED DRAWING: None

The invention provides a composition comprising (a) water, (b) a sulfonated polymer, a sulfonated alkyl amine compound, or a combination thereof, (c) a chelating agent, and (d) an organic compound comprising a quaternary amine, wherein the composition has a pH of less than about 7. The invention also provides a method for removing residue from a surface of a microelectronic device substrate comprising contacting the surface of the microelectronic device substrate with the compositions described herein.

Disclosed herein are materials for use in battery separators. They include copolymers of a divinylbenzene and one or both of the monomers below (non-linked and linked). R is an n-alkylene group, and n is a positive integer. The copolymer made be made from tertiary amine monomers that are converted to quaternary amines. One battery includes a zinc anode, a silver cathode, and a tri-layer separator. The inner layer uses the linked monomer, and the outer layers use the non-linked monomer.

This invention discloses a cationic adsorbent, its preparation method, and its application. Under a protective atmosphere, compounds of formula 1 and formula 2 are mixed and reacted in a solvent containing a catalyst (Friedel-Crafts alkylation reaction) to obtain the cationic adsorbent. The structural formulas of compounds 1 and 2 are respectively: [formulas omitted for brevity], where n is 1 or 2, and X is selected from Cl or Br. This invention successfully synthesizes a structurally controllable ionic organic porous material with a high specific surface area through a combination of quaternization and Friedel-Crafts alkylation reactions. This material exhibits excellent specific surface area and achieves efficient adsorption of the dye Rhodamine B, diclofenac sodium, and carbon dioxide.

The application belongs to the field of water treatment equipment and application technology, and particularly relates to a selective electrodialysis device and application thereof. The selective electrodialysis device comprises an electrodialysis cell, an anode and a cathode arranged on the two sides of the electrodialysis cell, and a cation exchange membrane and an anion exchange membrane arranged between the anode and the cathode in sequence. The cation exchange membrane is made of sulfonated polybenzimidazole as a base material, and the surface of the cation exchange membrane is coated with polystyrene sodium sulfonate containing porous micro-nano materials. A protective layer containing polydiphenylpiperidine is coated on the side of the cation exchange membrane facing the anode. The anion exchange membrane is made of quaternary amine polyfluorosulfone or polyether sulfone as a base material, and the surface of the anion exchange membrane is coated with polydimethyl diallyl ammonium chloride. The device can efficiently separate monovalent ions and polyvalent ions, the functionalization of the ion exchange membrane increases the membrane charge density, promotes the rapid migration of ions under the action of an electric field, and improves the ion transfer rate. The device is stable in operation, has a high separation rate and a high current efficiency.

The invention discloses a hydroxyl alumina-based alkaline electrolyzed water composite diaphragm and a preparation method thereof, and belongs to the technical field of diaphragm preparation, the diaphragm is composed of polysulfone, polyvinylpyrrolidone, quaternized polyvinyl alcohol and gamma-AlOOH powder, through introduction of gamma-AlOOH powder, the sheet resistance can be significantly reduced, the gas barrier property can be enhanced, the mechanical strength and dimensional stability can be improved, and the thermal stability and chemical stability can be improved; through quaternization modification, the permanent hydrophilicity of the diaphragm can be significantly enhanced, and the ionic conduction efficiency of the diaphragm can be improved.

The present application provides a kind of broad-spectrum condensate demulsifier and its preparation method.The demulsifier of the present application is composed of the following components: firstly, a mixture HW of three structures formed by esterification cross-linking of inorganic acid polyhydroxy alkyl quaternary amine and polyoxypropylene polyoxyethylene ether with novel structure using diisocyanate;secondly, propoxylated hydrazine ether NW using a compound with hydrazine structure as a starter agent, and according to the mass ratio, HW:NW=2-10:3-7.The condensate demulsifier of the present application can be used for paraffin-based, intermediate-based and naphthenic-based condensate oils, as well as condensate oils containing different chemical agents obtained by different processes, and has the characteristics of low temperature, rapid, deep demulsification and low oil content in water, which is a broad-spectrum condensate demulsifier worthy of promotion.

The application relates to the technical field of lake, and discloses a lightfast blue lake and a preparation method thereof. The lightfast blue lake is prepared from trihydroxyethyl melamine, epichlorohydrin, dodecyl N,N-dimethyl tertiary amine and the like as raw materials through substitution reaction and quaternary ammonium reaction to obtain a quaternary ammonium salt melamine pigment additive. Then, basic violet 5BN, the quaternary ammonium salt melamine pigment additive, basic dye, disodium hydrogen phosphate and the like are added into deionized water for stirring and dispersing, filtering, washing, drying, crushing and grinding to obtain the lightfast blue lake. The lightfast blue lake prepared by the application has stable color light, stable coloring intensity, stable quality and good lightfastness.

The CMP composition of the present invention comprises silica particles as an abrasive, a first chemical additive comprising a quaternary amine, a second chemical additive comprising a sulfonic acid group, a water soluble solvent, and optionally a biocide and a pH adjuster; wherein the pH of the composition is from 8 to 12. The CMP composition has a high polysilicon removal rate and a high selectivity of the polysilicon removal rate over the silicon nitride removal rate.

The invention relates to a preparation method of a sulfonate ampholytic surfactant. Sodium hydrogen sulfite, epichlorohydrin and tertiary amines (dodecyl tertiary amine, tetradecyl tertiary amine and hexadecyl tertiary amine) are used as raw materials, and the sulfonate ampholytic surfactant is generated through a ring-opening reaction and a quaternization reaction. The surfactant for oil displacement is characterized in that the surfactant for oil displacement contains both anionic groups and cationic groups, has good wettability and excellent temperature resistance and salt resistance, and is an amphoteric surfactant with higher interfacial activity.

The invention discloses a cationic adsorbent as well as a preparation method and application thereof, in a protective atmosphere, a compound shown in a formula 1 and a compound shown in a formula 2 are subjected to a mixed reaction (Friedel-Crafts alkylation reaction) in a solvent containing a catalyst, and the cationic adsorbent is obtained, the structural formulas of the compound in the formula 1 and the compound in the formula 2 are respectively shown in the specification, n is 1 or 2, and X is selected from Cl or Br. According to the preparation method disclosed by the invention, the ionic organic porous material with a controllable structure and a relatively high specific surface area is successfully synthesized through combination of a quaternization reaction and a Friedel-Crafts alkylation reaction, the ionic organic porous material has an excellent specific surface area, and efficient adsorption of dyes rhodamine B, diclofenac sodium and carbon dioxide is successfully realized.

This invention discloses a method for racemizing dextroimidazole base using ionic liquid catalysis in the field of chemical preparation technology. The dextroimidazole base undergoes a racemic reaction catalyzed by an ionic liquid, followed by post-treatment to obtain tetraimidazole base. The ionic liquid is a basic quaternary ammonium salt ionic liquid. The advantages of this invention are that it uses an ionic liquid as a novel green catalyst, possessing stability, low toxicity, designable structure, high efficiency, and environmental friendliness.

The application discloses a chlorfenapyr hapten, an artificial antigen and a preparation method and application thereof, relates to a chlorfenapyr hapten, an artificial antigen, an antibody, a colloidal gold immunochromatography card and application of the chlorfenapyr hapten and the artificial antigen in preparation and detection of chlorfenapyr. The chlorfenapyr hapten prepared by the application retains cyanogen and halogen connected with a pyrrole ring of chlorfenapyr, and also retains three characteristic groups of 4-chlorophenyl; a coupling arm is designed to be a straight chain with an active group derived from a tertiary amine in the form of a quaternary amine salt, so that a small molecule structure of the artificial antigen prepared retains original characteristics of chlorfenapyr; the chlorfenapyr antibody of the application has high titer, an IC 50 value of 0.67 µg / L, a linear range of 0.1 µg / L to 8.1 µg / L, and a sensitivity of 3 µg / kg in a standard solution and a detection sensitivity of 5 µg / kg in a sample.

The application provides a preparation method of a homogeneous anion exchange membrane, the homogeneous anion exchange membrane prepared by the method and application, and relates to the technical field of ion exchange membranes. The preparation method of the homogeneous anion exchange membrane comprises the following steps: mixing a quaternary amine polymer, a crosslinking agent and an organic solvent to obtain a casting solution; coating the casting solution on a support layer to obtain a wet membrane piece; and performing heat treatment on the wet membrane piece by using a gradient heating mode to obtain the homogeneous anion exchange membrane. The preparation method of the homogeneous anion exchange membrane has the advantages of simple operation process, significantly enhanced mechanical strength and stability of the membrane, reduced swelling, and improved overall structural stability of the membrane.