54 results about "Amine functionalization" patented technology

The present disclosure provides cellulose based adsorbents and their use in removing impurities from liquids, including water. The celluloses are alkylamine functionalized celluloses which may be contacted with a liquid, including water, to remove impurities therefrom.

A sorbent for direct air capture of CO2 includes a porous amine-functionalized polymeric material including a backbone and a plurality of side chains having amine groups branching from the backbone, the backbone including a rigid crosslinker having crosslinker groups, a ratio of the crosslinker groups to a total number of monomer repeating units in the polymeric material is about 0.1 to 0.4 such that the polymeric material's internal surface area is about 10 to 500 m2 / g.

A nanoparticle-well treatment additive complex comprising an amine functionalized silica nanoparticle, and a well treatment additive, where the well treatment additive is releasably attached to an amine group of the amine functionalized silica nanoparticle is disclosed. Methods of using the amine functionalized silica nanoparticle is also disclosed.

The present invention belongs to the field of energy storage and new material technology, and in particular to a preparation method and application of a multi-level porous fiber modified by amine functionalization. The method comprises the following steps: a graphene oxide dispersion, sodium polyacrylate, Triton X-100 and a solvent are mixed to obtain a spinning solution; a graphene oxide nanofiber membrane is obtained by electrostatic spinning, and the obtained graphene oxide nanofiber membrane is wound using a winding process to obtain a single multi-level hole fiber; the single multi-level hole fiber obtained by S2 is placed in an amine functionalization modification solution for surface functional group modification to obtain a special one-dimensional fiber electrode modified by ammonia functionalization; chemical reduction is then performed to obtain a multi-level porous fiber modified by amine functionalization. The preparation method obtains a multi-level hole one-dimensional fiber with layered winding multi-level hole structure characteristics and a surface positive charge, which has good electrochemical properties in zinc-iodine batteries and is suitable for large-scale batch production.

Compositions of nanoparticles and surfactants for improved water injectivity are disclosed. More specifically, synergistic combination of nanoparticles, including amine functionalized colloidal nanoparticles and surfactants, provides enhanced water injectivity and increased oil production. Methods of using are also disclosed.

Amine-functionalized organosilica materials are provided that have improved stability when exposed to oxidizing / oxygen-containing environments during cycling of temperature, such as the cycling of temperature that occurs when using a material as a sorbent during successive adsorption / desorption cycles. Methods of performing CO2 sorption / desorption with improved stability of the organosilica sorbent material are also provided. The improved stability is achieved in part by using amine-functionalized organosilica materials where the amine-functionalization is provided by functional groups that include primary amines but do not include secondary amines. Still further improvements in stability can be achieved when the functionalization is provided by a functional group that includes a primary amine while also not having any hydrogens on a carbon atom that is in the beta position relative to the primary amine.

A preparation method and use of an amine-functionalized adsorption material with highly dispersed active sites are provided. The preparation method includes: placing a graphene aerogel (GA) in a tube furnace, and conducting a thermal reduction treatment; placing a thermally reduced sample in a plasma vapor deposition tube, and subjecting the sample to a plasma treatment in different atmospheres under vacuum to produce a carrier; drying the carrier overnight; adding a polyamino organic amine and the carrier to a reactor, and heating in a forced air oven; taking a reaction product out, and removing an organic amine adhering to a surface of the reaction product; soaking in ethanol, and drying overnight in the forced air oven to produce the amine-functionalized adsorption material with highly dispersed active sites.

Disclosed herein is an aqueous coating composition containing an aqueous epoxy resin dispersion, an aqueous amine-functional resin dispersion and an aromatic carboxylic acid. The aqueous dispersion contains at least one specific di- and / or polyfunctional monomeric amine and at least one resin component including at least one specific polyfunctional organic amine. Further disclosed herein is a kit-of-parts including a base varnish containing the aqueous epoxy resin dispersion and a curing component containing the aqueous amine-functional resin dispersion as well as the aromatic carboxylic acid. Additionally disclosed herein is a process for producing a coating on the substrate as well as coated substrates resulting from said process. Cured coating layers formed from said compositions exhibit a good adhesion to the substrate as well as a high intercoat adhesion and blistering stability under humidity conditions without negatively influencing the excellent sandability and the good stone chipping properties.

Amine functionalized nanoparticles comprising a core-shell nanoparticle morphology comprising a trialkoxyorganosilane coated nanoparticle core and an amine functionalized group on the surface of the nanoparticle as a shell are disclosed, wherein the nanoparticle has an average particle size from about 1 nm to about 1000 nm. Methods and applications of use of the amine functionalized nanoparticles and compositions comprising the amine functionalized nanoparticles dispersed in an aqueous medium are also disclosed.

The instant disclosure relates to textile materials having an acid reactive functionalized polymer layer and a non-acid reactive functionalized layer coupled thereto. The acid reactive functionalized polymer layer may include: a polyamide polymer that captures and neutralizes acidic molecules; a hydrophilic polyether block amide copolymer; a maleic anhydride-grafted ethylene copolymer; and a non-halogenated flame retardant. The acid reactive functionalized polymer layer is fire resistant, acid neutralizing, and allows water vapor to transfer therethrough. The non-acid reactive functionalized layer and acid reactive functionalized polymer layer are free of per- and polyfluoroalkyl substances. The polyamide may include Nylon 12, Nylon 6, or Nylon 6,6 functionalized with an amine (e.g., a pyridine derivative and / or a halogenated-dimethylalkylamine) having a nitrogen that captures and neutralizes acidic molecules. The halogenated-dimethylalkylamine may include a general chemical formula of (CH3)2N—R—X, where R is an alkyl containing 1-12 carbon atoms, and X is chlorine or bromine.

This application relates to the field of fuel cells and discloses a proton exchange membrane modified with dual inorganic fillers, comprising a Nafion composite membrane matrix; CeO2 anchored on amine-functionalized cellulose nanofibers (CNFs), wherein CeO2 accounts for 2% to 5% of the total mass of the composite membrane; SiO2 nanoparticles are added, wherein SiO2 nanoparticles account for 0.5% to 2% of the total mass of the composite membrane; and Al2O3 nanoparticles are added, wherein Al2O3 nanoparticles account for 0.5% to 2% of the total mass of the composite membrane. This invention significantly improves the hardness and compressive strength of the composite membrane by anchoring CeO2 on amine-functionalized cellulose nanofibers (CNFs) and adding SiO2 and Al2O3 nanoparticles, thereby improving its service life and reliability. Simultaneously, the addition of carbon nanotubes (CNTs) greatly enhances the electrical conductivity of the composite membrane, which is crucial for improving the output efficiency and response speed of the fuel cell, directly affecting the overall energy conversion efficiency of the battery.

The invention relates to a method of producing sorbent granulates for separation of carbon dioxide from a fluid mixture, the method comprising providing particles of an amine functionalized sorbent material having amine groups chemically bound to the sorbent material surface which are ground into powder particles; and granulating the powder particles with added binder into sorbent granulates, wherein the sorbent granulates have a diameter in a range of 0.1-25 millimeter. The invention also relates to said produced sorbent granulate.

A sensor for measuring acetone includes: an array of nanowires extending from a substrate, each of the nanowires having a corresponding surface substantially composed of a compound semiconductor and a diameter of less than 100 nm; an electrical contact material disposed on a first portion of the surface of each nanowire to form a Schottky barrier contact with the first portion; an amine-functionalized polymer disposed on the nanowires to functionalize a second portion of the surface of each nanowire; and an electrical contact with the substrate for measuring a current flowing between the electrical contact and the Schottky barrier contact on the nanowire when the nanowire is exposed to light or biased, such that when the nanowire is exposed to a mixture of molecules including acetone, the measured current characterizes the concentration of acetone in the mixture.

The present invention relates to mesoporous amine-functionalized silica catalysts with worm-hole or channel-like morphology, prepared using 3-aminopropyl trimethoxysilane (3- APTMS) or 3-aminopropyltriethoxysilane (APTES). The catalysts exhibit average pore diameters of 1-100 nm and specific surface areas of 100-1,000 m2 / g. The preparation process involves mixing Pluronic P123 with hydrochloric acid at 30-40°C, followed by addition of a mixture of 3-APTMS or 3-APTES with tetraethyl orthosilicate (TEOS), and subsequent hydrothermal treatment. The choice of precursor determines morphology: 3- APTMS yields worm-hole structures, while 3-APTES produces channel-like structures. These catalysts efficiently convert epoxides and carbon dioxide into cyclic organic carbonates with excellent yield. Additionally, the invention discloses a process for preparing styrene carbonate-coated zinc anodes and assembling full cells incorporating these anodes, significantly enhancing the durability of aqueous rechargeable zinc-metal batteries (ARZMBs).

Methods are provided for making amine-functionalized organosilica materials that include additional amine functionalities that are grafted to the composition after the initial synthesis. Methods of using such materials are also provided. It has been discovered that additional aminosilyl groups can be grafted onto amine-functionalized organosilica materials under conditions that substantially preserve the original CO2 sorption capacity of the underlying organosilica material prior to grafting. This allows the additional amines in the grafted aminosilyl groups to increase the net capacity of the grafted material, as opposed to primarily replacing the original CO2 sorption capacity with the sorption capacity of the grafted amine functionalities.

The application discloses a synthesis method of an oxazoline compound. The method is as follows: taking an olefin compound which is cheap and easy to obtain as a starting material, performing amine functionalization on the olefin in the presence of a catalyst, an amination reagent, a base and an additive, and then performing intramolecular cyclization to obtain the oxazoline compound in one step with high selectivity. The method has the characteristics of high atom economy, wide source of raw materials, avoidance of use of anhydrous and oxygen-free operation conditions, simple process and the like, and is suitable for large-scale production.

Methods for separating fine particles from a fluid may be conducted using an amine-functionalized, partially oxidized saccharide polymer to promote separation of the fine particles. Cleaned fluids may be obtained without using a centrifuge to promote separation of the fine particles from the fluid.

The process of making amine magnetic nanoparticle biocomposites from rice husk fiber and sugarcane fiber can be done in one step reaction process. The addition of different concentrations of amine sources gives different results in terms of the amount of amine functionalized on the magnetic surface of the nanoparticles. Rice husk and sugarcane bagasse are activated by delignification, washing, and drying. Rice husk fiber and sugarcane bagasse fiber are used as a matrix in the magnetic nanoparticle biocomposite. The combination of the basic material forming the magnetic and rice husk fiber and sugarcane bagasse fiber is carried out in a solvothermal reactor through heating and washing. The resulting biocomposite has specific functional groups in the form of amine groups that can be applied in the fields of biomedical, sensors, and advanced materials.

Provided herein are amine-functionalized cellulose polymers useful for carbon dioxide capture and methods of preparation and use thereof.

The invention discloses an HEMMP / R-SiO2-NH2 adsorbent as well as a preparation method and application thereof, and belongs to the technical field of adsorbents. The method comprises the following steps: carrying out amine functionalization on a silicon dioxide sphere with a central radiation hole to prepare an amine-functionalized silicon dioxide sphere, loading HEMAP by using an impregnation method on the basis of the amine-functionalized silicon dioxide sphere, and adsorbing and recovering palladium metal in an aqueous solution by virtue of coordination of N atoms in amino groups, O atoms in HEMAP and Pd. According to the method, the adsorption effect of silicon dioxide on palladium metal is remarkably improved, meanwhile, dual adsorption of Pd < 2 + > and PdCl4 < 2-> is achieved, palladium metal in the aqueous solution is more effectively recycled, Pd < 2 + > in the aqueous solution can be reduced into elemental Pd, and secondary utilization is facilitated. The method has important significance on saving palladium resources, walking a sustainable development road and protecting the environment, and meanwhile, a new idea is provided for preparing an adsorbent which is low in cost and high in efficiency and is used for recycling palladium metal.

An ink set for inkjet printing comprising an aqueous liquid containing an organic resin particle comprising a first resin having at least one repeating unit functionalized with a primary amine and an aqueous inkjet ink containing a colorant and a second resin capable of reacting with the primary amine functional group of the first resin.

The invention discloses a method for preparing a highly selective core-shell magnetic nanoparticle for antibody separation, comprising the following steps: preparing ferroferric oxide / silicon oxide nanoparticles with a core-shell structure, performing amine functionalization treatment on the nanoparticles, and finally coupling IgG2a on the surface thereof; dispersing the IgG2a-coupled magnetic nanoparticles in a PBS buffer, adding tetraethyl silicate to stir the reaction, adding a mixed solution of N-propyltriethoxysilane, benzyltriethoxysilane, and (3-aminopropyl)-triethoxysilane, reacting, and after the reaction is completed, dripping a mixed solution of methanol, PEG-4, and NHS to continue stirring, washing the precipitate with a PBS buffer, and finally adding the precipitate to a mixed solution of a sodium hydroxide solution and a polyethylene glycol octylphenyl ether solution for treatment, obtaining magnetic nanoparticles, and redispersing the nanoparticles in a PBS buffer for standby use. The core-shell magnetic nanoparticles provided by the invention have many surface binding sites and high selectivity, and can effectively purify monoclonal shells.

The present disclosure is directed to microporous ladder polymers containing amine-functionalized monomer segments, amidoxime-functionalized monomer segments, or a combination thereof. Monomer compounds for preparation of the polymers are also described, as well as membranes and electrochemical cells containing the polymers.

The invention discloses a photocatalyst based on carbon nitride covalent grafted ionic liquid and a preparation method thereof, and belongs to the technical field of photocatalyst preparation, the preparation method comprises the following steps: mixing carbon nitride and NH4Cl, and calcining to obtain polyamino carbon nitride; the preparation method comprises the following steps: co-grinding the polyamino carbon nitride and the carboxyl-containing ionic liquid, adding a solvent into the ground powder, and heating until the solvent is evaporated, thereby obtaining the product. According to the photocatalyst, the electron transfer capability of imidazolium ionic liquid is utilized, separation of photo-generated charge carriers is promoted, compounding is inhibited, a stable chemical bonding interface is constructed through condensation of amine functionalized carbon nitride free-NH2 groups and carboxyl-OH groups of the ionic liquid, and the problems existing in the prior art are effectively solved.

Described herein are methods of making or regenerating solid sorbent composites comprising an amine and a porous support. The solid adsorbent composite exhibits a high adsorption capacity for carbon dioxide. The solid adsorbent composite material shows ideal hydrothermal and cycling stability.

Primer layers for adhesion of a pressure sensitive adhesive material to a substrate are provided. The primer layer comprises a crosslinked polymer. In some embodiments, the primer layer has an atomic nitrogen content of greater than 6 wt %, and in some a ratio of atomic weight percent of oxygen to nitrogen of less than 3.0. In some embodiments the crosslinked polymer is the reaction product of an amine-functional base polymer such as a polyethylenimine (PEI) and a crosslinker, which may be a polyaziridine crosslinker. Also provided are two-layer constructions comprising the primer layer and a substrate layer; and tapes, such as flexographic plate mounting tapes, comprising the two-layer construction and a pressure sensitive adhesive layer.

An adhesive composition is shown and described herein. The composition comprises a silylated polyurethane, an epoxy functional compound, and an amine functional compound. These ingredients are provided to control the molar ratio of amine active hydrogen (AH) to epoxy (E) groups. By controlling the molar ratio of amine active hydrogen to epoxy, an adhesive having excellent adhesion and strength to various types of substrates is provided.

Compositions containing amine-functionalized polymers may be configured to promote capture and release of carbon dioxide. Compositions suitable for capturing carbon dioxide from a fluid may comprise an amine-functionalized polymer, and at least one additional moiety configured to promote binding of carbon dioxide by the amine-functionalized polymer or to promote release of carbon dioxide from the amine-functionalized polymer. A proton ionizable group that deprotonates differentially as a function of temperature may comprise at least a portion of the additional moieties. The one or more additional moieties or the amine- functionalized polymer may accomplish one or more of the following to promote binding and release of carbon dioxide: lowering the dielectric constant of water, providing buffering, lowering pKa, providing surfactancy, providing a bound metal, or any combination thereof. The one or more additional moieties may be covalently bonded to the amine-functionalized polymer or blended with the amine-functionalized polymer as a small-molecule additive.

A sorbent for direct air capture of CO2 includes a porous amine-functionalized polymeric material including a rigid crosslinker having one or more proton binding sites configured to bind a hydronium ion under wet conditions of the direct air capture of CO2, the sorbent having an amine efficiency greater than 0.3.

Polymers for use as an Anion Exchange Membranes (AEMs) and produce an alkaline stable AEM. The multinuclear aromatic and amine-functionalized acetal (ketal) come together to form a polymer with a hydrocarbon backbone that is stable to alkaline conditions. The use of an amine-functionalized acetal allows for the incorporation of a stable cation, dimethyl piperidinium, in the most stable confirmation while avoiding incorporation of a CF3 group with every cation. The amines within the amine-functionalized polyaromatic that results from this polymerization are quaternized to form the desired cationic groups to create an AEM that is mechanically robust, conductive, and stable.