585 results about "Allylamine" patented technology

The invention discloses graphene aerogel and a preparation method thereof. The method comprises the following steps: (1) uniformly mixing graphene oxide dispersion liquid with an amine water-soluble compound to obtain graphene oxide mixed liquid, wherein the amine water-soluble compound is selected from one or more of diethylamine, ethidene diamine, propane diamine, butane diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, allylamine polymer and N,N'-bis(2-aminoethyl)-1,3-propane diamine; (2) irradiating the graphene oxide mixed liquid by high-energy rays under the anaerobic condition to obtain amino-modified graphene aerogel; (3) performing freeze-drying or supercritical CO2 drying to obtain the graphene aerogel. The graphene aerogel adopts a porous and macroporous structure, is relatively uniform in structure, and can be used for adsorbing an organic solvent; moreover, the preparation method is simple and environment-friendly.

The present invention provides functionalized particles and methods for delivering said particles capable of crossing a physiologic barrier and exerting an effect. In one embodiment, the present invention provides a method of delivering a particle to a mammal comprising the steps of contacting a functionalized particle with a tag and introducing the functionalized and tagged particle to a mammal, wherein the functionalized portion of the particle is selected from the group consisting of acrylic acid, 2-hydroxyethyl acrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, allylamine, carboxyl group, hydroxyl group, sulfonic group, aldehyde and amine group. The particle is a biodegradable or nodegradable polymer and less than 1.0 mm in diameter.

The invention relates to a heavy metal ion adsorption film and a production method thereof. The heavy metal ion adsorption film is composed of polyvinyl alcohol and amido polymers at a polyvinyl alcohol/amido polymer ratio of (95:5) to (20:80). The amido polymers are polyvinyl amine, polyallylamine and branched polyethylene. The amido polymers are introduced into the aqueous solution of polyvinyl alcohol and then the resulting mixture undergoes crosslinking reaction with a cross-linking agent to form a three-dimensional polymer network. The method is simple, feasible and free of organic solvents. The introduction of amido groups can efficiently increase the water swellability of polyvinyl alcohol film and simultaneously enhance the adsorbability of the film to heavy metal ions.

A method comprising the steps of: (A) forming a fluid comprising a crosslinked polymer, wherein the crosslinked polymer comprises: (i) a first monomeric unit of one or more N-vinyl lactams; and (ii) a crosslinker selected from the group consisting of: divinyl ether, diallyl ether, vinyl or allyl ethers of polyglycols or polyols, divinylbenzene, 1,3-divinylimidazolidin-2-one, divinyltetrahydropyrimidin-2(1H)-one, dienes, allyl amines, N-vinyl-3(E)-ethylidene pyrrolidone, ethylidene bis(N-vinylpyrrolidone), and any combination of any of the foregoing; and (B) introducing the fluid into a portion of a well. The crosslinked polymer may additionally comprise: a second monomeric unit selected from the group consisting of: acrylamide, N-substituted acrylamides, methacrylamide, N-substituted methacrylamides, acrylates, methacrylates, acrylic acid, methacrylic acid, N-vinylamides, N-allyl amides, vinyl alcohol, vinyl ethers, vinyl esters, allyl alcohol, allyl ethers, allyl esters, vinylpyridine, vinyl sulfonates, allyl sulfonates, vinylimidazole, allylimidazole, diallyldimethylammonium chloride, and any combination of any of the foregoing.

A medical device with a hydrophilic and lubricious coating, wherein the coating includes a hydrophilic polymeric unit layer deposited on the medical device and cross-linked with a plasma deposited double bond monomer. The hydrophilic polymeric unit can include ethylene oxide with one or more primary or secondary alcohol groups or glycosaminoglycans such as hyaluronic acid, and the double bond monomer includes monomers containing at least one double bond, preferably a C═C, C═N or C═O bond, including N-trimethylsilyl-allylamine, ethylene, propylene and allyl alcohol.

A solid sorbent for the capture and the transport of carbon dioxide gas is provided having at least one first layer of a positively charged material that is polyethylenimine or poly(allylamine hydrochloride), that captures at least a portion of the gas, and at least one second layer of a negatively charged material that is polystyrenesulfonate or poly(acryclic acid), that transports the gas, wherein the second layer of material is in juxtaposition to, attached to, or crosslinked with the first layer for forming at least one bilayer, and a solid substrate support having a porous surface, wherein one or more of the bilayers is/are deposited on the surface of and/or within the solid substrate. A method of preparing and using the solid sorbent is provided.

The invention discloses a preparation method of a silane coupling agent with an imide cycle structural unit. The preparation method comprises the following steps: (1) dissolving cyclic anhydride into glacial acetic acid, adding allylamine according to the mole ratio (1:1 or 2:1) of cyclic anhydride to allylamine, refluxing for 2-36h while stirring, adding water, filtering and drying to obtain an imidization product; (2) dissolving the imidization product into benzene or methylbenzene, adding trialkoxysilane with the molar concentration of 0.01-0.05mol/l, reacting at the temperature of 50-90 DEG C for 2-10h, and removing fractions with low boiling points through reduced pressure distillation to obtain the silane coupling agent with the imide cycle structural unit, wherein the trialkoxysilane contains a platinum catalyst, and the mole ratio of trialkoxysilane to the imidization product is 1:1 or 2:1. According to the invention, the silane coupling agent with the imide cycle structural unit is synthesized by taking cyclic anhydride, allylamine and trialkoxysilane as reactants through a two-step method, and an expensive chemical drying agent is not needed to be added in the process, so that the cost is low; moreover, the preparation method is simple in synthesis process and high in yield, and the silane coupling agent with the imide cycle structural unit is easy to purify.

In order to overcome the phenomenon that the existing polycarboxylic acid water reducing agent is hypersensitive to slime contained in aggregate, the invention provides an assistant which can effectively inhibit the influence of the slime on the polycarboxylic acid water reducing agent and a preparation method thereof. The assistant for the polycarboxylic acid water reducing agent is a product obtained by the polymerization of an acrylamide monomer and an amine-alkene-containing monomer under the initiation effect of an initiator, wherein the amine-alkene-containing monomer specifically refers to one of dimethylallyl amine, diallyl amine, dimethylaminoethyl methacrylate or dimethylaminoethyl acrylate. The assistant provided by the invention can well inhibit the influence of the slime contained in aggregate on the polycarboxylic acid water reducing agent and keep a favorable working state. Besides, the preparation method provided by the invention has simple reaction conditions and is applicable to industrial production; and the obtained product contains no chloride ion.

The invention discloses a macromolecule chelating agent and a preparation method thereof. The method enables iminodiacetonitrile and epoxy chloropropane to perform ring-opening reaction in absolute ethyl alcohol so as to enable the iminodiacetonitrile and the epoxy chloropropane to be cohered in the same molecule, NaOH is added to enable adjacent -OH and CI in the molecule to remove HCI under alkaline condition so as to generate epoxy group in closed-ring mode, the epoxy group and diallylamine perform ring-opening reaction to enable the diallylamine to be connected in the molecule, -CN group is hydrolyzed under alkaline condition to obtain carboxyl-COO-, and finally the macromolecule chelating agent is obtained by adopting radical aqueous solution polymerization. Each structure unit in the molecule of the macromolecule chelating agent contains a strong chelating group -N (CH2COO-)2 which can form chelate containing a plurality of stable five-membered rings with a plurality of kinds of metal ions. The method is wide in application range and particularly suitable for being combined with an ultra-filtration method to separate and extract rare metals and precious metals, efficient separation and enrichment of heavy metals, advanced treatment of waste water of heavy metals and the like.

The present disclosure provides for a method of preparing and using an emulsion for treating a papermaking process. The emulsion is an oil-in-water emulsion of alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer. The method comprises adding an oil-in-water emulsion to the papermaking process; wherein the oil-in-water emulsion comprises alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer; and wherein the oil-in-water emulsion is added in an amount sufficient to improve sizing of the paper produced by the papermaking process. The primary or secondary amine may be a secondary amine comprising diallylamine, and the polymer may be a diallylamine-acrylamide copolymer.

An improved antifungal composition for topical application to the skin and nails comprises: (1) an allylamine antifungal compound; (2) an aliphatic alcohol substituted with an aromatic substituent in which the allylamine antifungal compound is soluble to a degree that a therapeutically effective concentration of the allylamine antifungal compound can be applied topically in solution; (3) a lower aliphatic alcohol in which the aromatic alcohol is soluble; and (d) water or a water-compatible solvent mixture. The allylamine antifungal compound can be terbinafine or naftifine. The aliphatic alcohol substituted with an aromatic substituent can be benzyl alcohol or phenethyl alcohol. The lower aliphatic alcohol can be ethyl alcohol or isopropyl alcohol. In an alternative, the composition can further comprise an additional antifungal compound. Another aspect of the invention is a method for treatment of a fungal infection of skin or nails comprising administering the antifungal composition of the present invention topically to the skin or nails in an amount therapeutically effective to treat the fungal infection.

The invention discloses Prussian blue and Prussian blue analogue nanosheet film materials and an in-situ preparation method thereof. A substrate is modified with two high-molecular polymers with opposite charges, namely PAH (poly allylamine hydrochloride) and PSS (sodium polystyrene sulfonate), and Prussian blue or Prussian blue analogue square nanosheets are synthesized in situ on the modified substrate with metal ionic salt and potassium ferrocyanide as raw materials. A test of a prepared nanosheet film through ultraviolet-visible spectroscopy, a scanning electron microscope and a transmission electron microscope proves that the nanosheets have controllable size and are uniformly dispersed. The growth direction of the nanosheets is limited by the porous network of the high-molecular polymers, so that the nanosheets are square or rectangular, water is used as a solvent in the whole preparation process of the film and is harmless to the environment, the preparation process is simple and feasible, the cost is low, equipment is simple, the film materials with different kinds of functionality are obtained by changing the variety of simple ions, and the in-situ preparation method has important application value in the field of material preparation.

Aqueous dispersion for the chemical-mechanical polishing of metal surfaces, containing a metal oxide powder and a cationic, surface-active polymer, wherein the metal oxide powder is silicon dioxide, aluminium oxide or a mixed oxide of silicon dioxide and aluminium oxide, and the cationic, surface-active polymer is a polyallyl amine or polydiallyl amine dissolved in the dispersion and having a weightaverage molecular weight of less than 100,000 g/mol. The dispersion can be used for the chemical-mechanical polishing of metallic layers and of metallic films, which are applied to an insulating barrier layer.

The invention discloses an amidated graphene oxide modified polycarboxylate superplasticizer. The main raw materials include: graphene oxide, methylallyl polyoxyethylene ether, acrylic acid, allyl amine, maleic anhydride, water, an oxidizing agent, a reducing agent, a condensation agent and an activating agent. The main method includes: firstly subjecting allyl amine and graphene oxide to amidation reaction to prepare allyl amine modified graphene oxide, then mixing the obtained allyl amine modified graphene oxide with methylallyl polyoxyethylene ether, acrylic acid and maleic anhydride, carrying out polymerization reaction under the initiation of the oxidizing agent and reducing agent, thus obtaining the amidated graphene oxide modified polycarboxylate superplasticizer. The method provided by the invention mainly utilizes the amidation reaction of allyl amine and graphene oxide to realize close combination of a graphene oxide two-dimensional nano lamellar structure with polycarboxylate superplasticizer molecules, so that graphene oxide can be better dispersed during application in concrete, and the synthesized superplasticizer product has more stable performance.

The invention discloses amphiprotic amphiphilic leather retanning fatting agent and a preparation method of the amphiprotic amphiphilic leather retanning fatting agent. The constituent of the amphiprotic amphiphilic leather retanning fatting agent is (methyl) crylic acid-N-alkyl diene propyl amine-diallylamine terpolymer. According to the preparation method of the amphiprotic amphiphilic leather retanning fatting agent, N-alkyl diene propyl amine is firstly prepared, then the N-alkyl diene propyl amine, diallylamine, and (methyl) crylic acid are adopted for a free radical copolymerization reaction under the acidic condition to obtain an aqueous dispersoid containing the (methyl) crylic acid-N-alkyl diene propyl amine-diallylamine terpolymer, the solid content of a product is adjusted to 15-20% with water, and the amphiprotic amphiphilic leather retanning fatting agent is obtained. The molecular structure of the amphiprotic amphiphilic leather retanning fatting agent contains carboxyl of negative ions and tertiary amino of positive ions, and the polymer can display different electrical properties under different conditions of potential of hydrogen (PH), meanwhile the polymer contains alkyl of a long chain, and functions of lubrication fibers can be achieved. The polymer has the function of retanning, fatting and dyeing assistance at the same time, physical and mechanical properties of processed crust leather, such as tensile strength, fullness, softness and elasticity, are all improved, the surface of the processed crust leather is strong in lubrication feel and comfortable in hand feel, and the leather has a good waterproof performance.

The invention discloses a preparation method for a porous PtAg@Pt octahedral nanoparticle. Poly allyamine hydrochloride (PAH) is adopted as a complexing agent, a stabilizing agent and a morphology guide agent, and HCHO (40%) is adopted as a reducing agent; K2PtC14 and an AgNO3 precursor are jointly reduced into Pt-Ag octahedral alloy through a hydrothermal reduction method at one step; and after the obtained nanoparticle is centrifuged and washed, in the ultrasonic environment, concentrated nitric acid is added for etching, and therefore the porous PtAg@Pt octahedral nanostructure is obtained. According to the Pt-based alloy nanoparticle prepared through the method, due to the unique porous octahedral structure of PtAg@Pt, the nanoparticle shows high catalytic activity and stability on formic acid electrocatalytic oxidation (an FAOR) and can be applied to anode catalysts of fuel batteries.

The invention discloses the preparation method of the ultra fine fiber membrane of an affinity acrylonitrile base copolymer. The acrylonitrile base copolymer is dissolved in solvent to form solution and then electrostatic spinning is conducted to prepare the fiber membrane. The mass percentage of the acrylonitrile base copolymer in the solution is two to eight percent; the spinning voltage of the electrostatic spinning is six to twenty five kv; the flow velocity of spinneret solution is 0.5 to 2.0 ml per hour with the deposition distance ranging from eight to twenty centimeters. The acrylonitrile base copolymer is acrylonitrile/allylamine copolymer, acrylonitrile/methyl allylamine copolymer, acrylonitrile/acrylamide copolymer or acrylonitrile/methacrylamide copolymer with the viscosity-average molecular weight being eighty to three hundred thousand; the solvent is one or various kinds which are mixed with random percentages of dimethyl sulfoxide, dimethyl formyl ammonia or dimethyl acetyl ammonia. After the glycan of the fixed shell of a chemical bond at the surface of the membrane, the membrane is used for separating and purify protein with simple operation, good chemical stability and low cost.