173 results about "Polyamine Compound" patented technology

To provide a polyurea resin composition which has an excellent curing time, is also excellent in water resistance and chemical resistance when formed into a coating film, and has suitable adhesion and hardness as a coating paint of a molding.SOLUTION: The polyurea resin composition contains a polyisocyanate compound (A) and a polyamine compound (B). The polyisocyanate compound (A) contains 51 mass% or more of an aliphatic polyisocyanate compound or its derivative (A1). The aliphatic polyisocyanate compound or its derivative (A1) contains more than 80 mass% in total of biurets or nurates. The polyamine compound (B) contains 80 mass% or more of an aspartic acid ester compound (B1). The aspartic acid ester compound (B1) contains 30 mass% or more of a non-alicyclic aspartic acid ester compound (B2).SELECTED DRAWING: None

The invention belongs to the technical field of carbon dioxide capture and separation, and particularly relates to a two-phase absorbent for capturing carbon dioxide as well as a preparation method and application thereof, and the two-phase absorbent comprises a polyamino compound, a compound containing amino and ether bonds, a phase splitting agent and water; wherein the compound containing the amido and the ether bond comprises a monoamine compound containing the ether bond and a polyamine compound containing the ether bond; the mass ratio of the monoamine ether bond-containing compound to the polyamine ether bond-containing compound is (0.1-5): 1. Compared with a traditional organic amine absorbent, the two-phase absorbent provided by the invention has the characteristic of high CO2 absorption capacity, and meanwhile, due to the fact that the two-phase absorbent can greatly reduce the volume of a regeneration solution, the regeneration energy consumption can be greatly reduced.

The invention discloses a multifunctional polyamide type solid propellant slurry viscosity reduction auxiliary agent and a preparation method, and belongs to the field of viscosity reduction auxiliary agents, dimer acid and a polyamine compound are subjected to a condensation reaction at 135-150 DEG C, and a polyamide prepolymer is generated in obtained reaction liquid; and cooling the reaction liquid, adding a solvent, uniformly mixing, adding a vinyl monomer at 45-60 DEG C, reacting, and finally cooling to room temperature to obtain the multifunctional polyamide type solid propellant slurry viscosity-reducing auxiliary agent. According to the present invention, the use amounts of the dimer acid, the polyamine compound and the vinyl monomer are respectively 47-67%, 18-44% and 9-25% by mass, such that the fluidity and the viscosity in the propellant slurry can be effectively improved, and the mechanical strength of the cured product can be improved;

The invention discloses a preparation method of a functionalized halloysite nanotube / polyaniline composite membrane, which comprises the following steps: ultrasonically dispersing halloysite nanotubes in toluene, adding KH550, reacting, carrying out suction filtration, washing and drying to obtain KH550 modified halloysite nanotubes, and drying to obtain the functionalized halloysite nanotube / polyaniline composite membrane. Then carrying out a ring-opening reaction on epoxy chloropropane and the KH550 modified halloysite nanotube to obtain a functionalized halloysite nanotube containing an imino group, a hydroxyl group and a chlorine group; the preparation method comprises the following steps: carrying out substitution reaction on amino and chlorine, taking a polyamine compound as a cross-linking agent to realize cross-linking among functionalized halloysite nanotubes, carrying out suction filtration to form a film, washing, and drying to obtain a functionalized halloysite nanotube film with the gram weight of not more than 15g / m < 2 >; and performing in-situ polymerization of polyaniline in the functionalized halloysite nanotube film, and performing in-situ crosslinking to obtain the functionalized halloysite nanotube / polyaniline composite film. The adsorption performance of the halloysite nanotubes on heavy metal ions is improved, and the obtained composite membrane is easy to recover.

Provided are a backing material for an ultrasonic probe, an ultrasonic probe, an ultrasonic diagnostic device, and a curable resin composition, the backing material comprising thermally conductive particles and a resin, the resin comprising any one of the following (A)-(C): (A) a reaction cured product of an epoxy resin having a polyurethane structure and a polyamine compound; (B) a reaction cured product of an epoxy resin and a polyamine compound and having a polyether structure; and (C) a reaction cured product of a polyisocyanate compound and a polyamine compound, the loss tangent of the resin in the range of 0-50 DEG C is 0.06 or more, the loss tangent in the range of-20-110 DEG C is less than 1.50, the storage modulus of the backing material in the range of 0-50 DEG C is 1000 MPa or more, and the content of the resin in the backing material is 25-50 vol%.

The invention provides a carrier material as well as a preparation method and application thereof, the preparation method of the carrier material comprises the following steps: 1) mixing a mixed solution containing a polyhydroxy compound and / or a polyamine compound, polycarboxylic acid and a metal source with a porous material to obtain a mixed system; wherein the mass of the mixed solution is 40-60% of the mass of the porous material; and 2) carrying out post-treatment including polymerization treatment, drying treatment and roasting treatment on the mixed system to obtain the carrier material. According to the preparation method of the carrier material provided by the invention, metal ions enter the pore channels of the porous material, the metal material can be uniformly distributed on the inner surfaces of the pore channels under the pore channel confinement effect, and the carrier material is applied to a catalyst, so that the temperature of a catalytic oxidation reaction of a volatile organic compound can be reduced.

A paving material composition containing: an epoxy resin; an epoxy resin curing agent containing a reaction composition (A) containing a reaction product of styrene and a polyamine compound represented by the following formula (1); and an aggregate.wherein X is a phenylene group.

The invention provides a waterborne epoxy curing agent based on enamine bonds as well as a preparation method and application of the waterborne epoxy curing agent, and belongs to the technical field of coatings. The waterborne epoxy curing agent based on the enamine bond is prepared from the following raw materials in parts by weight: 12 to 14 parts of a polyepoxy compound, 7 to 12 parts of a polyamine compound, 37 to 42 parts of a polyether-based polyacetoacetate compound, 9 to 14 parts of a diacetoacetate compound, 5 to 7 parts of a monoacetoacetate compound and 20 to 50 parts of a solvent. According to the waterborne epoxy curing agent constructed through enamine bonds, the free amine content of the obtained waterborne epoxy curing agent can be effectively reduced, and the activation period of the waterborne epoxy curing agent during use is prolonged.

A process for preparing polyamines via (meth)acrylonitrile and / or crotononitrile addition to an amine followed by hydrogenation in the presence of a catalyst and hydrogen and optionally in the additional presence of ammonia, primary and / or secondary amine, comprises a) reacting at least one amine of general formula (I) with (meth)acrylonitrile and / or crotononitrile, thereby obtaining at least one first intermediate (I1), b) hydrogenating the at least one first intermediate (I1) to at least one polyamine compound (II), or hydrogenating the at least one first intermediate (I1) in the additional presence of ammonia, primary and / or secondary amine.

Embodiments of the present disclosure generally relate to epoxy resin compositions and uses thereof. The epoxy resin composition includes an epoxy component including a first epoxy compound and a second epoxy compound. The epoxy resin composition includes a curing agent component including a first polyamine compound and a second polyamine compound.

The present invention discloses a polishing cloth, which comprises an elastic composite layer prepared by impregnating a fiber substrate twice with a foaming material; the foaming material comprises a primary impregnating slurry and a secondary impregnating slurry, the reaction raw materials of the primary impregnating slurry include 5-40 wt% of diisocyanate, 40-60 wt% of polyolefin polyol, 20-40 wt% of polyester polyol, 1-5 wt% of aliphatic polyol, the secondary impregnating slurry comprises a prepolymer and a polyamine compound, and the reaction raw materials of the prepolymer include 10-25 wt% of diisocyanate, 60-70 wt% of polyolefin polyol, 10-20 wt% of aliphatic polyol or alicyclic polyol. The present invention uses a two-time impregnation process to maintain the performance of the above elastic composite layer, can improve the uniformity of double-sided polishing of silicon wafers, improve the planarization effect of chemical mechanical polishing, and effectively solve the problem of edge collapse of silicon wafer grinding.

The invention discloses a preparation method and application of a SiO2 / loofah composite material synergistically modified by amino and amidoxime groups, comprising the steps of: modifying alkali pre-treated loofah and SiO2 nanoparticles respectively by epoxy silane to obtain epoxylated loofah and epoxylated SiO2 nanoparticles; ultrasonically dispersing the two in a solvent, performing composite cross-linking modification with a polyamine compound as a cross-linking agent to obtain an amino SiO2 / loofah composite material; then adding cyanoacetic acid and a catalyst to a solution containing the composite material for stirring reaction to obtain a cyanated SiO2 / loofah composite material with surface modified cyano groups; and then performing an amidoxime reaction to obtain an amino and amidoxime-synergistically modified SiO2 / loofah composite material. The invention improves the structural stability of the loofah matrix and exerts the synergistic adsorption effect of SiO2 nanomaterials, loofah, amidoxime groups and amino groups on uranium.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

The invention relates to the technical field of rice stress-resistant cultivation, and discloses a rice root system salt tolerance adjusting method based on exogenous spermidine, which comprises the following core steps: in the critical period of rice root system development, directionally applying a spermidine solution subjected to purity verification to a rice root system area, by accurately regulating and controlling the application concentration, frequency, duration and application environment conditions of spermidine, the osmotic regulation capability and the anti-oxidation system function of a rice root system in a high-salt environment with the soil conductivity larger than or equal to 2 dS / m are improved, the salt tolerance of the root system is remarkably improved, and then growth and development of rice are guaranteed. The spermidine is a straight-chain polyamine compound with good biocompatibility, the chemical purity is not lower than 98%, no heavy metal is left, and the contents of lead, cadmium and mercury are all smaller than or equal to 0.1 mg / kg. According to the invention, precise targeted regulation and control of the salt tolerance of the rice root system are realized, and the regulation effect is stable and remarkable.

The application belongs to the field of engineering plastics, and particularly relates to long-chain polyamide resin with easy processing and high tensile property, and a preparation method and application thereof. The long-chain polyamide resin comprises the following raw material components: component a: aliphatic carboxylic acid compound component; component b: polyamine compound component; and component c: a compound with a structure shown in the following formula (1), wherein n and m can be any number between 1 and 10. The long-chain polyamide resin of the application introduces structural diacid with an asymmetric benzene ring structure, utilizes the asymmetric structure to reduce the crystallinity of the material, and introduces the benzene ring structure to improve the mechanical property of the polyamide material, so that the low processing temperature is realized from the polyamide material component itself, the energy consumption is reduced, and the mechanical property of the polyamide material is ensured. The problem that the processing temperature and mechanical property of the polyamide material and the processing energy consumption are difficult to be considered in the prior art is solved.

Provided are: a backing material for an ultrasonic probe, the backing material containing thermally conductive particles and a resin, wherein the resin is a cured reaction product of a polyamine compound and a polyisocyanate compound containing a polyether-modified polyisocyanate compound represented by general formula (1); an ultrasonic probe; an ultrasonic diagnostic device; an ultrasonic endoscope; and a curable resin composition. In the formula, L1 represents an amide bond, L2 represents a specific polyether chain, and X represents a group including an isocyanato group and an aromatic ring. The amide bond of L1 is attached to L2 on the side of >C(=O).

The invention relates to the technical field of high polymer materials, and discloses a temperature latent curing agent and a preparation method thereof.The curing agent is prepared from a polyamine compound and a polythiol compound through a proton transfer reaction at the temperature of 15-30 DEG C. In the reaction, the molar ratio of active amine hydrogen to thiol groups is 1: (0.9-1.1), and a stable ion pair structure is formed. The invention also discloses a single-component epoxy curing system containing the curing agent, epoxy resin and a dielectric constant jump additive. The system is endowed with excellent storage stability by utilizing an ion pair structure; meanwhile, after heating, the compatibility of the dielectric constant jump additive and the epoxy resin is changed, and the dielectric constant of the system is triggered to rise, so that ion pair constraint is weakened, and the curing agent is dissociated and rapidly cured at a moderate temperature. According to the technology, the contradiction between latency and curing conditions is solved, and a cured product has good thermal and mechanical properties.

The invention discloses a polymer gel profile control and displacement system and a preparation method thereof, and belongs to the technical field of chemical oil displacement. The profile control and flooding system is prepared by the following method: reacting methyl allyl polyoxyethylene ether with 4-(2-bromoethyoxyl) benzaldehyde to obtain a functional monomer containing an aldehyde group; polymerizing a functional monomer containing an aldehyde group and acrylamide to obtain a polymer rubber block, hydrolyzing the rubber block, continuously drying, and crushing to obtain dry polymer powder containing the aldehyde group; and mixing the dry powder with a multi-primary amine compound cross-linking agent according to a mass ratio of 1: 0.6-1: 1 to form a polymer gel profile control and flooding system with good salt tolerance. In the profile control system disclosed by the invention, polymer gel with higher cross-linking strength can be formed between the aldehyde group-containing polymer and the multi-primary amine compound under the dual action of primary amine, the aldehyde group and the amide group; the gel formed by the aldehyde group-containing polymer and the multi-primary amine compound has better salt tolerance.

The present invention relates to a polyacrylonitrile-based double-layer amidoxime-modified functional fiber and a preparation method thereof, belonging to the technical field of functional polymer materials. The modified functional fiber has a double-layer structure, one layer is a fiber layer formed by partial amidoximation of carboxylated polyacrylonitrile fiber, and the other layer is a compound layer formed by partial or complete amidoximation of carboxylated polyacrylonitrile; the connection between the fiber layer and the compound layer is realized by forming amide bonds between two connection sites of the polyamine compound and the carboxyl groups in the fiber layer and the carboxyl groups in the compound layer respectively; the modified functional fiber is prepared by adjusting the pH value of the polyacrylonitrile salt solution and reacting with amino fibers, and then subjecting the obtained double-layer polyacrylonitrile fiber to amidoximation. Since the polyacrylonitrile in the compound layer bears a part of the amidoxime groups, it can protect the main chain of the polyacrylonitrile fiber in the fiber layer, so that the modified functional fiber has good mechanical properties.

The application discloses an LED chip roughening liquid and a preparation method and application thereof, and belongs to the field of surface roughening of semiconductor material multi-element metal compounds. The roughening liquid comprises inorganic acid, organic acid, polyamine compound, oxidizing agent, wetting agent and the like; by adding a perfluorinated surfactant with high stability and low surface tension, the roughening interface tension is effectively reduced, the roughening product and bubbles are quickly separated from the reaction interface, the roughening interface is promoted to be in a uniform state, the problem of uneven roughening surface depth is effectively solved, the roughening surface quality is improved, the light output rate is effectively increased, and the LED light emitting intensity is improved. The roughening liquid can perform surface micro patterning on the LED chip under normal temperature conditions to form a concave-convex rough surface. The roughening agent is easy to operate and low in cost, the reaction condition is normal temperature and easy to control, and can be applied to industrial production.

A paving material composition containing:an epoxy resin:an epoxy resin curing agent containing 50% by mass or more of a polyamine compound represented by the following formula (1) or a modified product thereof. (A); and an aggregate.wherein X is a cyclohexylene group.

The purpose of the present invention is to provide a cement additive which can improve the strength of carbon dioxide gas fixation concrete. The present invention is a cement additive used in a cement composition for carbon dioxide fixation. The cement additive contains a compound represented by formula (1) and / or a polyamine compound (A1) which is a heterocyclic polyamine. (In the formula, R1, R2, R3, R4, R5 and R6 are the same or different, and represent a hydrogen atom or a hydrocarbon group having one or more carbon atoms; n and m are the same or different, and represent an integer of 0 or more; the number of nitrogen atoms included in formula (1) is 2-6; x1 and x2 are the same or different, and represent an integer of 0 or more; and P is the same or different, and represents a hydrogen atom or a structural unit having a separate amino group due to branching.)

The present invention relates to the field of adhesives, specifically to a water-based adhesive and its application in electronic ceramic molding. The water-based adhesive comprises an epoxy-modified polyacrylate emulsion and a polyamine compound, wherein the mass ratio of the epoxy-modified polyacrylate emulsion to the polyamine compound is 1:0.01-0.05. Tests have shown that an alumina blank prepared using the adhesive of the present invention has high mechanical strength, which is beneficial for subsequent processing and industrial application.

The invention relates to a porous polymer material and a preparation method and application thereof.The preparation method comprises the steps that firstly, a compound containing sulfydryl and thiolactone is designed and synthesized, a mixed solution of the compound, a polar solvent and a surfactant serves as a continuous phase, a non-polar solvent serves as a dispersion phase, oil-in-oil type high-internal-phase emulsion is formed after emulsification, and the porous polymer material is obtained; and reacting with a polyamine compound to obtain the sulfydryl-containing porous polymer material. The prepared porous material can adsorb heavy metal ions in water and can be used in the field of water treatment.

The invention relates to the technical field of concrete admixtures, in particular to a high-performance cross-linked cationic concrete air entraining agent and a preparation method thereof. The preparation process of the air entraining agent comprises the following steps: under the protection of inert atmosphere, carrying out reflux reaction on a polyamine compound and brominated alkane, and then mixing and emulsifying with an emulsifier and a sodium citrate solution to obtain pre-emulsified liquid; mixing the pre-emulsion with hydrophilic polyoxyethylene ether, an initiator and a phosphate modifier, and carrying out initiation cross-linking reaction by adopting ultraviolet irradiation to obtain an intermediate product; mixing and stirring the intermediate product with a micro-nano bubble solution, pretreated nano cellulose and a foam stabilizer, and then performing reduced pressure distillation and filtration to obtain an air entraining agent; a highly uniform and stable micro-nano bubble system is formed in the concrete, the air entraining agent can significantly improve the freeze-thaw cycle resistance, mechanical strength and durability of the concrete, and the preparation process is mild in condition and environmentally friendly.

A method of producing a polyamine compound, the method including: a first step of generating a polyurea compound by reacting a thiourethane resin and an amine compound A with each other; and a second step of generating a polyamine compound by reacting the polyurea compound and an amine compound B with each other.

The invention relates to a nanocapsule with high transparency as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out polymerization reaction on a polyisocyanate compound, at least one hydrophilic diol compound and at least one hydrophobic diol compound to form an amphiphilic block copolymer with an isocyanate end group; the preparation method comprises the following steps: dissolving an amphiphilic block copolymer and an active component into a water-soluble organic solvent, dropwise adding deionized water or an organic solvent at a speed of 10-100 mL / min under mechanical stirring, and carrying out self-emulsification to form a uniformly dispersed dispersion; and adding a polyamine compound into the dispersion, and carrying out a cross-linking reaction to form the nanocapsule. Through material design and a process route, the contradiction that high-activity component loading capacity and high optical transparency cannot be achieved at the same time in the field of nano carriers is systematically solved.

This invention relates to the field of microencapsulation technology, and more specifically, to an organic-inorganic hybrid sustained-release fragrance microcapsule and its preparation method. By weight percentage, the components include: 10-35% fragrance oil, 1-10% silane precursor, 0.01-2% silane coupling agent, 1-15% polyisocyanate, 0.01-10% emulsifier, 0.01-10% polyamine compound, and deionized water to make up the balance. Through the combination of sol-gel and interfacial polymerization methods, the stability of the fragrance is improved, making it less prone to volatilization or decomposition during long-term storage or under different environments, effectively preventing direct contact between the fragrance and air, thereby prolonging the duration of the aroma. During use, the organic-inorganic hybrid fragrance microcapsule releases active substances through sustained release, reducing environmental pollution and diffusion.

Provided are an epoxy resin adhesive for a medical device and its cured product, and a medical device member and a medical device. The epoxy resin adhesive includes the following components (A) to (C):(A) an epoxy resin;(B) a polyamine compound having two or more unsubstituted amino groups; and(C) a compound having a nonaromatic carbon-carbon double bond group and a phenolic hydroxy group.

A two-component mixed polyurea resin composition production raw material containing a component (A) that contains a polyisocyanate compound (a) and a component (B) that contains an aromatic polyamine compound (b), wherein the two-component mixed polyurea resin composition production raw material is characterized in that the usable time from immediately after component (A) and component (B) are mixed until the viscosity value measured in an organic-solvent-free state doubles is 10 minutes or longer.