29 results about "Aliphatic amine" patented technology

The invention relates to the technical field of composite materials, in particular to a synergistic flame-retardant epoxy resin-based porous sound insulation composite material and application thereof. The raw materials comprise 100 parts of bisphenol A epoxy resin, 15 parts of an aliphatic amine curing agent, 12 parts of ammonium dihydrogen phosphate, 6 parts of melamine, 4 parts of nano silicon dioxide, 5 parts of sodium chloride, 2 parts of ammonium bicarbonate, 0.8 part of carbon nanotubes and 0.5 part of a silane coupling agent. The synergistic flame-retardant epoxy resin-based porous sound-insulation composite material provided by the invention effectively solves the technical bottleneck that the flame-retardant, sound-insulation and mechanical properties of an epoxy resin-based material in the prior art are difficult to synergistically improve, and has remarkable beneficial effects in multiple aspects.

The application relates to the technical field of paint, in particular to a two-component epoxy strong-acid-and-strong-base-resistant heavy-duty paint and a preparation method thereof, which comprises a main paint and a curing agent, the main paint contains a compounded system of bisphenol A epoxy resin and bisphenol F epoxy resin, a composite diluent, a functional filler synergized by flaky glass flake and spherical filler, a silane coupling agent and a special anti-rust pigment; the curing agent is compounded by polyamide, phenolic amine, modified alicyclic amine and modified aliphatic amine, the paint has high solid content and low VOC, has strong adhesion to various substrates, has a bottom-surface-combined function in a single coating layer, is resistant to strong acid, strong base and extreme corrosive environment, is simple to construct, is fast to cure and has a long service life.

Disclosed is a novel room-temperature curable bio-based epoxy vitrimer with a simple design of the chemical structure. A hempseed oil-derived glycidyl ester type epoxy (HOEP) was synthesized and then blended with a bisphenol A epoxy (DER331) to manipulate the properties of the resulting vitrimer s. An aliphatic amine hardener, diethylenetriamine (DETA), was selected as hardener to realize the room temperature curing in presence of triethanolamine (TEOA) as the catalyst. Unlike the traditional glycidyl ether epoxy-amine the thermosets which are based on sable C—N and ether linkages, the epoxy vitrimer herein includes ester bonds with HOEP and hydroxyls formed from the reaction of amine and epoxy in its cross-linked network. Dynamic transesterification (DTER) between the ester bonds and hydroxyls take place at elevated temperatures, imparting the vitrimer significant stress relaxation behavior and repairability. This provided a viable method to produce room temperature curable epoxy vitrimer s.

The application discloses a latent aliphatic amide curing agent, a preparation method thereof and application thereof. The latent aliphatic amide curing agent is obtained through an amidation reaction of an aliphatic amine compound and a formyl carboxylic acid compound. The secondary amine group in the latent curing agent obtained by the application does not react with an epoxy resin at a low temperature due to the influence of steric hindrance, and has latency. The latent modified aliphatic amine curing agent prepared by the application is a flowable liquid at normal temperature, and can be used in combination with a traditional solid powder type latent curing agent, thereby improving the poor miscibility of the solid powder type latent curing agent with the epoxy resin.

This invention discloses an organic clay rheology modifier for oil-based drilling fluids, which is obtained by modifying attapulgite with aliphatic amine compounds and / or epoxy compounds. The specific steps include: adding attapulgite to water to form an attapulgite dispersion; adding a modifier to the attapulgite dispersion to obtain an organically modified (or altered) attapulgite dispersion; and post-processing the organically modified or altered attapulgite dispersion to obtain organic attapulgite. This invention uses aliphatic amine and epoxy compounds with excellent high-temperature resistance to organically modify attapulgite, acting as a rheology modifier to improve the rheological properties and thermal stability of oil-based drilling fluids, enabling them to meet increasingly complex drilling environments. This preparation method is simple, requires minimal equipment, and is used in oil and gas drilling processes to significantly improve the rheological properties and high-temperature resistance of oil-based drilling fluids.

A method for depolymerizing rigid polymeric polyurethane (PUR) or polyisocyanurate (PIR) foams involves grinding the foams to form a powder, adding the powder to liquid aliphatic amines to obtain a reaction mixture, and performing an aminolysis reaction on the reaction mixture under an inert atmosphere at elevated temperatures and extended incubation times. The process allows for the recovery of polymeric methylene diphenyl diisocyanate (PMDA) in high purity and high yields from the depolymerized foams. The method also includes recovering PMDA by precipitation and using it as a precursor to obtain polymeric methylene diisocyanate (PMDI) for the synthesis of PUR and PIR foams.

The present invention relates to a method for improving visibility of an uneven character or figure embossed on a rubber molded body formed from a rubber composition, or improving visibility of a character or figure printed on a surface of the rubber molded body.　In one aspect, the present invention relates to a method for improving visibility of a character or figure on a rubber molded body formed from a rubber composition by adding one or more selected from the group consisting of aliphatic amines, polyoxyethylene alkylamines, and maleic acid ester compounds to the rubber composition. Preferably, the aliphatic amines are tertiary higher alkylamines, and the maleic acid ester compounds are polyoxyalkylene alkyl maleic acid esters.

Solid adsorbents based on amidine-containing aliphatic amine polymers with resistance to oxidative damage in air and water at elevated temperatures compared to the prior art is disclosed. The solid adsorbent exhibits a high porosity and reactivity for the adsorption of carbon dioxide (CO2) from ambient air and does not require a porous substrate material such as porous silica to generate said porosity and reactivity to or with CO2. The material is particularly useful as a CO2 adsorbent for Direct Air Capture (DAC) applications.

To provide a method for producing high-purity N-substituted aspartic acid from which impurities such as long-chain aliphatic amines have been sufficiently removed. [Solution] A method for producing N-substituted aspartic acid (1), comprising: (A) an acid decomposition step in which crude N-substituted aspartate obtained by an addition reaction of maleate and / or fumarate with a long-chain aliphatic amine is acid-decomposed in an aqueous solution with an inorganic acid having an acid dissociation constant smaller than that of N-substituted aspartic acid at a temperature range of 40 to 100°C to precipitate N-substituted aspartic acid; (B) a separation step to separate the precipitated N-substituted aspartic acid; and (C) a washing step to wash the N-substituted aspartic acid after the separation step with water and a lower alcohol. JPEG2026115080000014.jpg42159

The present application relates to the technical field of organic synthesis, and particularly relates to an electrochemical synthesis method of 3-iodo-4-amino maleimide, which comprises the following steps: adding N-phenyl maleimide, aromatic amine compound or aliphatic amine compound, iodide and other substances as reaction raw materials into an anode chamber of an electrolytic cell, adding a supporting electrolyte and ultrapure water into a cathode chamber, and electrolyzing at room temperature to synthesize 3-iodo-4-amino maleimide. The present application uses electrochemical reaction, realizes the preparation of products through the gain and loss of electrons of reactants on electrodes, does not need to add additional oxidants and metal catalysts, and the reaction is carried out at normal temperature and pressure, which is conducive to energy saving. The process flow is simple, the operation is simple, and the reaction is easy to control. The present application opens up a new synthesis route and method for the preparation of 3-iodo-4-amino maleimide compound, and has good application potential and research value.

The present invention pertains to a method for rustproofing a metal component by using a rubber molded body obtained from a rubber composition having a rust prevention effect.　In one embodiment, the present invention pertains to: a method for rustproofing a metal component, the method comprising bringing, into contact with a metal, a rubber molded body obtained from a rubber composition containing one or more rubber composition additives selected from the group consisting of aliphatic amines, nonionic surfactants, and maleic acid ester compounds; or a rubber composition that is to be used in said method for rustproofing a metal component and that contains one or more rubber composition additives selected from the group consisting of aliphatic amines, nonionic surfactants, and maleic acid ester compounds.

This invention discloses a bio-based rubber antioxidant for tires and its preparation method, relating to the technical field of rubber antioxidants. The bio-based rubber antioxidant is obtained in an alkaline environment through the reaction of aliphatic amine compounds, aromatic amine compounds, methionine with formaldehyde and alkali-activated lignin. By rationally adjusting the dosage of each component, the resulting bio-based rubber antioxidant exhibits excellent anti-aging properties, heat resistance, and migration resistance within the rubber matrix.

The objective of this invention is to provide a short fiber treatment agent, etc., which can improve the stability of emulsions containing the short fiber treatment agent and improve the friction reduction properties of fibers treated with the short fiber treatment agent. The short fiber treatment agent contains a component (A) as a hydroxy acid and / or its alkali metal salt, a component (B) as a quaternary ammonium compound and / or imidazoline compound, and a component (C) represented by compounds formed by adding ethylene oxide and / or propylene oxide to a mono- or di-fatty acid having 8 or more and 22 carbon atoms. The quaternary ammonium compound is an imidazoline-onium type, a single long-chain backbone type, a double long-chain backbone type, and / or aliphatic amine type polyoxyethylene quaternary ammonium. The imidazoline compound is an imidazoline having an alkenyl group having 1 to 24 carbon atoms and / or an imidazoline having an alkyl group having 1 to 24 carbon atoms.

[Problem] To provide a biaxially stretched polyolefin film that has antistatic performance. [Solution] A biaxially stretched polyolefin film comprising: (A) a glycerin fatty acid ester composed of an ester of a C12-24 fatty acid and glycerin; and (B) one or more selected from the group consisting of aliphatic diethanolamines, fatty acid esters of polyoxyethylene aliphatic amines, fatty acid diethanolamides, and fatty acid monoesters of fatty acid diethanolamides, said biaxially stretched polyolefin film being characterized in that the (A) glycerin fatty acid ester contains 0-15 mass% of glycerin fatty acid monoester, 30-60 mass% of glycerin fatty acid diester, and 30-60 mass% of glycerin fatty acid triester (provided that the total amount of said monoester, said diester, and said triester is 100 mass%).

The present invention aims to provide a method for producing N-methylated amine compounds that does not require formaldehyde and can produce N-methylated amine compounds in excellent yield. [Solution] A method for producing an N-methylated amine compound, characterized by heating an aliphatic amine compound having at least one amino group in its molecule to 50 to 250°C in an atmosphere in which carbon dioxide at 0.1 to 10 MPa (gauge pressure) and hydrogen at 0.1 to 20 MPa (gauge pressure) are introduced, in the presence of a catalyst on which a sulfur element and an active metal element are supported on a carrier, thereby methylating the amino group.

This invention discloses a series of isoflavulol amine copolymers, their preparation methods, and their antibacterial applications. This series of compounds uses fulvulin as the parent compound, converting fulvulin into isoflavulin. Then, isoflavulin, as the lipophilic moiety, is linked to various aliphatic amines and heterocyclic amines via alkyl linkages of different lengths, synthesizing a series of isoflavulol amine copolymers. Further structural optimization can be performed by introducing methyl groups at the nitrogen atom site to form nitrogen cations. The isoflavulol amine copolymers prepared by this invention exhibit good antibacterial effects against Staphylococcus aureus ATCC 29213 and various methicillin-resistant Staphylococcus aureus (MRSA), and possess advantages such as good water solubility, low biotoxicity, and high yield, showing promise for further development into semi-synthetic antibacterial drugs for clinical use.

The present application relates to the technical field of high polymer composite material, in particular to a kind of carbon dot resin composite material and its preparation method and application, by weight fraction including resin matrix 80~120 parts, functionalized carbon dot 0.05~0.3 parts, aliphatic amine curing agent 15~35 parts;Functionalized carbon dot surface contains aldehyde group and amino group, and functionalized carbon dot and resin matrix are covalently anchored by Schiff base dynamic covalent bond.The present application constructs Schiff base dynamic covalent bond, in-situ aldehyde group carbon dot is doped in trace amount, and gradient curing process is used, while guaranteeing the high insulation and high transparency of material, realize anti-aging, low light attenuation, anti-precipitation and micro-crack self-repairing performance, meet the use requirement of high-end electronic packaging.

A treatment liquid which is applied to a substrate by an inkjet system, and includes water, a coagulant, and a surfactant, in which the coagulant contains a polycondensate of an aliphatic amine and an epihalohydrin, and a diallyldialkylammonium halide-based polymer, at a mass ratio of 20:80 to 90:10, and the surfactant contains a fluorine-based surfactant and a silicone-based surfactant.

The present application belongs to the technical field of cation extraction, and particularly relates to a method for separating cations from an acidic vanadium solution, which comprises the following steps: S1, obtaining the acidic vanadium solution by roasting and acid leaching of vanadium slag; S2, extracting the acidic vanadium solution by selecting an extraction solvent to obtain an oil phase and an aqueous phase; S3, selecting a stripping agent to perform back extraction on the oil phase to obtain a stripping raffinate and a blank organic phase, and collecting the stripping liquid; S4, precipitating the stripping raffinate, drying and calcining to obtain vanadium pentoxide; the extraction solvent comprises an extractant, a diluent and a modifier; the extractant comprises a mixture of one or more of anthraquinone and its derivatives, 1,4-anthracenedione and its derivatives, alkyl phosphonic acid and its derivatives, alkyl phosphine and its derivatives, phosphate ester and its derivatives, quinoline and its derivatives, aliphatic ketone and its derivatives, aliphatic ether and its derivatives, aliphatic amine and its derivatives, aliphatic hydrocarbon and its derivatives, and benzene and its derivatives. The method can greatly improve the recovery rate and purity of cations.

The application provides an olefin polymerization catalyst and a preparation method thereof. The preparation method comprises the following steps: mixing a terminal silicon ether aliphatic amine and a salicylaldehyde compound to perform a condensation reaction, so as to obtain an organic ligand; mixing the organic ligand and silica gel to perform an elimination reaction, so as to obtain an intermediate product A; mixing the intermediate product A and a tetraamine metal compound to perform a complexation reaction, so as to obtain an intermediate product B; and mixing the intermediate product B, a co-catalyst and phenolic aluminum oxide to perform an activation reaction, so as to obtain the olefin polymerization catalyst. The catalyst obtained by the method has high catalytic activity, high metal loading and low cost.

The application relates to a robot pre-embedded component low-temperature and low-pressure integrated forming method, which comprises the following steps: integrated forming, i.e. filling a mold cavity with liquid two-component reaction materials under the driving of vacuum negative pressure, coating a robot pre-embedded component and then rapidly crosslinking and solidifying; the liquid two-component reaction materials are one of a low-temperature curing epoxy resin system, a polyurethane RIM system, a polyurea RIM system and a PDCPD-RIM system; the forming temperature is controlled to be less than or equal to 60 DEG C and the forming pressure is controlled to be less than or equal to 0.1 MPa during integrated forming; the low-temperature curing epoxy resin system is composed of a bisphenol A epoxy resin and a modified polythiol or aliphatic amine curing agent; the polyurethane RIM system is composed of a polyol mixture and a polyisocyanate prepolymer; the polyurea RIM system is composed of an amino-terminated polyether and an isocyanate prepolymer; and the PDCPD-RIM system is composed of dicyclopentadiene monomers and a tungsten-based catalyst. The high-temperature and high-pressure mechanical damage and thermal damage risks of pre-embedded precision components are eliminated, and the range of pre-embedded components is expanded.

This invention discloses a graft-modified amylopyridine-oxime-modified copolymer resin porous microsphere. Acrylonitrile, methyl methacrylate, and styrene are used as comonomers, divinylbenzene as a crosslinking agent, and azobisisobutyronitrile as an initiator. The copolymer resin microspheres ANMA are formed by suspension polymerization, followed by amylopyridine oxime-modification reaction with hydroxylamine hydrochloride solution to obtain amylopyridine-oxime-modified microspheres AOMA. Finally, AOMA-PEI is obtained through ethylenediamine amination, glutaraldehyde activation, and graft modification with polyethyleneimine (PEI). AOMA-PEI contains amylopyridine-C(NH2)=N-OH and aliphatic amine C-N groups. Its microstructure is a micron-sized spherical structure with a specific surface area of ​​93-99 m². 2 / g, mesopore volume data is 0.30-0.40 cm³. 3 / g; strength is 31-35 MPa, tensile stress is 55-60 MPa. Its preparation method includes the following steps: 1. Synthesis of ANMA microspheres; 2. Amine oxime modification of ANMA; 3. Grafting of polyethyleneimine. When used as a column adsorption material in molybdenum technetium generators, the adsorption capacity remains at 350-440 mg / g under irradiation conditions with an absorbed dose of 50-500 kGy.

Recent advances in LNA oligonucleotides include the use of amine linkers to attach LNA antisense oligonucleotides to conjugation groups. See, for example, WO2014 / 118267. This invention stems from the identification of a problem when deprotecting LNA oligonucleotides containing aliphatic amine groups and DMF-protected LNA G nucleotides, resulting in a +28 Da impurity. This problem was solved by using an acyl protecting group on the exocyclic nitrogen of the LNA-G residue, instead of the standard DMF protecting group.

The invention discloses a room-temperature-cured epoxy resin raw material composition, room-temperature-cured epoxy resin and a preparation method and application of the room-temperature-cured epoxy resin raw material composition. The room-temperature curing epoxy resin raw material composition comprises a component A and a component B, wherein the component A comprises epoxy resin and an optional diluent; the component B comprises a curing agent and an accelerant, wherein the curing agent comprises an aliphatic amine curing agent and a polyether amine curing agent; the accelerant comprises alkylphenol. The component A and the component B are mixed and subjected to vacuum defoaming, and the room-temperature curing epoxy resin is obtained; the epoxy resin provided by the invention is relatively low in viscosity, relatively long in pot life, relatively high in flexibility and excellent in comprehensive performance, the bonding strength of the epoxy resin is equivalent to that of the existing epoxy resin, and the problems that the existing room-temperature curing resin is low in flexibility, short in operation time and relatively high in viscosity are effectively solved.

An aspect of the present disclosure relates to a dispersant composition for an electrode of a power storage device. The dispersant composition contains an acrylic polymer (A), an amine compound (B) with a boiling point of 200° C. or less, and an organic solvent (C). The acrylic polymer (A) contains a constitutional unit a represented by the following formula (1). The compound (B) is at least one amine compound selected from the group consisting of a secondary aliphatic amine, a tertiary aliphatic amine, an aromatic amine, and a heterocyclic amine.

This invention relates to the field of organic synthesis, specifically to a method for the preparation of difluoroenones and their in-situ reaction with amines, alcohols, etc., to convert them into the corresponding difluoroacetamides and difluoroacetic acid esters. The invention involves sequentially adding potassium fluoride, an amine or alcohol, and a difluorobromoacrylsilyl compound to a reaction solvent under a nitrogen atmosphere to obtain a mixture. This mixture is stirred at 25°C until the reaction is complete, filtered, and purified to obtain the difluoroacetamide or difluoroacetic acid ester compound. The preparation method of this invention is simple to operate (highly reactive difluoroenones are generated in situ and participate in the reaction), achieving efficient synthesis of difluoroacetamide / difluoroacetic acid esters and avoiding the use of highly volatile difluoroacetyl chloride. The difluorobromoacrylsilyl used in this invention can be conveniently prepared on a large scale and can be purified by distillation. The reaction conditions involved in the preparation method of this invention have good substrate tolerance and can be applied to aliphatic amines, aromatic amines, and various primary and secondary alcohols.

The application discloses a method for deaminative functionalization of aliphatic amine or aliphatic nitroamine, which comprises: reacting aliphatic amine as shown in formula (I) or aliphatic nitroamine as shown in formula (II) with a nucleophile in the presence of an acid and a solvent to generate a deaminative functionalization product as shown in formula (III); wherein, R 1 , R 2 , R 3 groups are each independently selected from hydrogen, hydroxyl, amino, alkyl, alkoxy, alkanoyl, alkoxycarbonyl, alkylsulfinyl, alkylsulfonyl, arylsulfonyl, aryl, heteroaryl, phenylalkyl, or two or three of R 1 , R 2 , R 3 groups form a non-aromatic ring, a cage compound; FG is a functional group for reaction of the nucleophile. The method has the advantages of cheap and easily available raw materials, simple reaction conditions, wide substrate applicability and the like.