20 results about "Dimethylethanolamine" patented technology

This invention relates to the field of polymer materials, and specifically discloses a waterborne polyurethane, its neutralization preparation method, and its applications. This waterborne polyurethane is prepared by mixing the following raw materials in parts by weight: 10-30 parts by weight of a polyurethane prepolymer containing carboxyl functional groups, 5-25 parts by weight of a polyurethane prepolymer containing amino functional groups, 0.6-2.0 parts by weight of an organic amine chain extender, and 50-80 parts by weight of deionized water; wherein the polyurethane solid content accounts for 20-50% of the total weight of the raw materials. The preparation process of this invention is simple, the product is stable during storage, and it does not contain volatile or migrating amine neutralizing agents such as triethylamine or dimethylethanolamine, thus meeting the stringent regulatory requirements for applications such as food contact materials.

This invention discloses a method for preparing and applying a solid-supported eutectic solvent material. The specific preparation process involves: firstly, chemically bonding a hydrogen bond acceptor derivative, N,N-dimethylethanolamine, onto the surface of a chloromethyl polystyrene resin support to generate a hydrogen bond acceptor structure in situ; then, thoroughly mixing this structure with a corresponding hydrogen bond donor, urea, to finally obtain the chloromethyl polystyrene resin-supported eutectic solvent material. The solid-supported eutectic solvent material provided by this invention combines the advantages of eutectic solvents and solid supports, overcoming the drawbacks of eutectic solvents such as easy loss during use, large dosage, and poor physical stability. It features a simple synthesis method, fast adsorption rate, and large adsorption capacity, and can be used for the efficient adsorption and removal of indomethacin sodium from water.

The application discloses a modified polyurethane water-based functional coating and a preparation process thereof, and belongs to the technical field of water-based functional coatings. In the application, N,N-dimethylethanolamine is used as a blocking agent to block the isocyanate prepolymer, so that a latent type blocked isocyanate water-based polyurethane emulsion is prepared; lactide monomers, epoxy group grafted modified nano silicon dioxide and amino functionalized light stabilizer microcapsules are added into the emulsion; curing is carried out by using a two-stage process, that is, after preheating and water removal and film formation, 130-150 DEG C baking is carried out to trigger the deblocking of the DMEA blocked isocyanate, and the tertiary amine groups in the deblocked DMEA molecules immediately initiate the ring-opening polymerization of the premixed lactide monomers in the system in situ to generate polylactic acid segments which are chemically grafted to the crosslinked network. The application realizes the synchronous linkage of crosslinking and curing and polymer toughening, and the obtained coating has the characteristics of high crosslinking density, excellent flexibility and low internal stress.

This invention discloses an electronic potting compound for encapsulating new energy power systems and its preparation method, belonging to the field of adhesive preparation technology. The electronic potting compound for encapsulating new energy power systems consists of component A and component B. Component A includes polypropylene glycol, dicyclohexylmethane diisocyanate, hydroxyl-terminated polydimethylsiloxane, bismuth-zinc composite catalyst, N,N-dimethylethanolamine, porous alumina supported filler, composite halogen-free flame retardant, thixotropic agent, defoamer, and surface-modified calcium sulfate whisker fibers. Component B includes polypropylene glycol and dicyclohexylmethane diisocyanate. The electronic potting compound prepared by this invention exhibits good thermal conductivity and electromagnetic shielding capabilities after curing, while also possessing high mechanical strength.

A composition for carbon dioxide (CO2) capture includes 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, or combinations thereof. A process of CO2 capture includes mixing a CO2-containing gas with the composition. A system includes a component for receiving a gas and the composition, which absorbs CO2 from the gas. A further composition includes a first amine solvent selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine and a second amine solvent independently selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, meglumine, ethyl diethanolamine, dimethylethanolamine, piperidine, 2-amino-2-methyl-1-propanol, and monoethanolamine. A further process includes reacting CO2 with an amine selected from 2-aminocyclohexanol, cis-1,2-diaminocyclohexane, and meglumine.

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

The invention discloses rubber modified emulsified asphalt as well as a preparation method and application thereof. The rubber modified emulsified asphalt comprises latex, petroleum asphalt, an ammonium salt emulsifier and a nonionic emulsifier, wherein the ammonium salt emulsifier is obtained by reacting vegetable oleic acid with N, N-dimethylethanolamine. The rubber modified emulsified asphalt disclosed by the invention can be used as a main raw material of a waterproof coating for buildings and roads and bridges, can improve the tensile strength, elongation at break, low-temperature flexibility, bonding strength, tear strength and other properties of the waterproof coating, can reduce the comprehensive cost, and can also be directly used as the waterproof coating for buildings and roads and bridges.

The invention discloses an electronic pouring sealant for packaging a new energy power system and a preparation method of the electronic pouring sealant, and belongs to the technical field of adhesive preparation. The invention relates to an electronic pouring sealant for packaging a new energy power system, which is composed of a component A and a component B. The component A comprises the following raw materials: polypropylene glycol, dicyclohexylmethane diisocyanate, hydroxyl-terminated polydimethylsiloxane, a bismuth-zinc composite catalyst and N, N-dimethylformamide. The flame retardant is prepared from N, N-dimethylethanolamine, porous aluminum oxide loaded filler, a composite halogen-free flame retardant, a thixotropic agent, a defoaming agent and surface-modified calcium sulfate whisker fibers. The component B is prepared from the following raw materials: polypropylene glycol and dicyclohexylmethane diisocyanate. The prepared electronic pouring sealant has good heat conduction capability and electromagnetic shielding capability after being cured, and also has relatively high mechanical strength.

The invention relates to the technical field of pavement materials, in particular to an ultraviolet light curing asphalt pavement cold patch material which is composed of cold patch liquid and aggregate, the mass ratio of the cold patch liquid to the aggregate is (4-6): 100, the cold patch liquid comprises decolorized asphalt and an ultraviolet light curing resin system, and the ultraviolet light curing resin system comprises a curing agent and a curing agent. The mass ratio of the decolorized asphalt to the ultraviolet curing resin system is 100: (10-30), and the ultraviolet curing resin system is prepared from the following components in parts by mass: 50 to 70 parts of epoxy acrylate resin, 20 to 40 parts of tripropylene glycol diacrylate, 2 to 5 parts of 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide and 0.5 to 1 part of dimethylethanolamine. The problems that a traditional cold patch material is long in curing time and slow in strength forming are solved, a specific ultraviolet curing resin system and decolorized asphalt are adopted, rapid curing is conducted under the illumination condition, high strength is provided for pavement pit slot repairing, vehicle loads can be effectively borne, the durability of a repaired pavement is enhanced, and the requirement for rapid traffic opening is met.

The invention discloses a two-component self-emulsifying polyester acrylic dispersion and a preparation method thereof, and relates to the field of waterborne polyurethane paints.The preparation method comprises the following steps that a half ester intermediate is prepared and reacts with ethylene carbonate, and a hydrophilic monomer with cyclic carbonate groups is obtained; dibasic acid and dihydric alcohol are subjected to polycondensation to obtain initial resin, propylene glycol monomethyl ether, a mixed solution a containing hydrophilic monomers and a mixed solution b are added into the initial resin at intervals, mixing is conducted, and functional resin is obtained; the functional resin and dimethylethanolamine are subjected to a stirring reaction, then deionized water is added, mixing is conducted, and a product with the D50 being 50-150 nm and the PDIlt is obtained; and 0.2 of a two-component self-emulsifying polyester acrylic acid dispersion. According to the preparation method disclosed by the invention, the hydrophilic monomer with a cyclic carbonate group is introduced during preparation, and a step-by-step controlled polycondensation and graft polymerization process is adopted, so that the hydrophilic monomer is directionally and uniformly anchored on a polyester main chain, and the problem of non-uniform molecular structure caused by random copolymerization of the hydrophilic monomer in a traditional method is avoided.

This invention relates to a rare-earth-selenium tungsten oxide nanocluster material functionalized with mixed organic ligands, the chemical formula of which is [HDMEA]. 9 Na 12 H3[Ce6(DMEA)3(H2O)9W9(HTA)6O 18 (SeW9O 33 [6]ˑ81H2O, where DMEA = N,N-dimethylethanolamine and H3TA = hydroxymalonic acid. This material is prepared by a one-step self-assembly reaction of sodium tungstate dihydrate, N,N-dimethylethanolamine, sodium selenite, hydroxymalonic acid, and cerium nitrate hexahydrate in aqueous solution. The experimental operation is simple and the cost is low. This material can be used as a polyanionic polymer to form a thin film material by layer-by-layer assembly with positively charged chitosan. This multilayer film can be used as a sensitizing material to combine with polypyrrole containing template molecules (2,4-dichlorophenol) to form a molecularly imprinted polymer. This polymer can be used to construct an electrochemical sensor for detecting 2,4-dichlorophenol. Experimental results show that this electrochemical sensor has high sensitivity, strong stability, a wide detection range (1 μM–1 mM), and a low detection limit (0.125 μM).

Provided in the present invention are a coating composition for metal packages for food, a preparation method therefor and a metal packaging can. Using 100 parts by weight of epoxy acrylate resin as reference, the composition of the present invention comprises: 10-25 parts by weight of dimethylethanolamine, 0.5-3 parts by weight of wax slurry, 5-10 parts by weight of a crosslinking agent, 0.1-1.1 parts by weight of a defoamer and 200-350 parts by weight of deionized water. The composition of the present invention enables a small coating amount, convenient use and high bubble storage capacity, and has environmental friendliness and food safety.

The invention discloses a photocuring slow-release coating with antibacterial and osteogenesis promoting functions and a preparation method, and belongs to the technical field of medical biological materials. The photocuring slow-release coating with the antibacterial and osteogenesis promoting functions is prepared from the following raw material components: phosphorylated chitosan, methacrylic anhydride gelatin, porous silicon dioxide nanospheres, BMP-2, nano-silver and a photoinitiator, the phosphorylated chitosan is obtained by reacting phosphorous acid diester with chitosan, and the phosphorous acid diester is obtained by reacting N, N-dimethylethanolamine with phosphorus trichloride; the porous silicon dioxide nanospheres are prepared by taking tetraethoxysilane and chloropropyltriethoxysilane as silicon sources through a reversed-phase microemulsion method; the photocuring slow-release coating with the antibacterial and osteogenesis promoting functions is short in curing time, good in cell compatibility and good in osteogenesis promoting effect.

The invention discloses a pretreatment method of a blue pigment for color photoresist, and relates to the technical field of photoresist pigment pretreatment, the pretreatment method of the blue pigment comprises the following steps: S1, activating the blue pigment to prepare an activated intermediate; s2, N, N-dimethylethanolamine is prepared into a quaternary ammonium salt bridging unit; s3, modifying the activated intermediate by using a quaternary ammonium salt bridging unit to prepare a copper phthalocyanine-quaternary ammonium salt derivative; s4, modifying the copper phthalocyanine-quaternary ammonium salt derivative to prepare a blue pigment; the pretreated blue pigment is subjected to quaternary ammonium salt bridging and phosphonate grafting modification, so that the dispersing capacity of the blue pigment in resin can be improved, the blue pigment can also have a synergistic effect with benzotriazole and benzophenone, the heat and humidity resistance of the blue pigment is improved, and the service life of a photoresist device is prolonged; and polypropylene glycol bis (2-aminopropyl ether) and propylene glycol methyl ether acetate are added, so that the compatibility of the blue pigment and a photoetching process reagent can be improved, and the pollution of a film layer is reduced.

The utility model relates to an acrylic acid dimethylaminoethyl ester temperature change reactor relates to production equipment field, including tank body, intake pipe, shaft, blade and baffle, the tank body is filled with methyl acrylate, dimethylethanolamine and catalyst, intake pipe is fixed connection in tank body bottom one side so as to introduce cooling gas into tank body after one round reaction, and the baffle is fixed in the tank body. The rotating shaft is rotatably connected to the top of the tank body, the plurality of heatable blades are fixedly connected to the rotating shaft at intervals, and the rotating shaft rotates to drive the blades to stir and heat materials in the tank body to promote reaction; the top of the baffle is hinged to the top of the end, extending into the tank body, of the air inlet pipe, and the baffle naturally droops to completely cover the pipe opening of the air inlet pipe to prevent materials from entering the air inlet pipe.

This invention relates to the field of coating technology and discloses a silicone-modified acrylate UV-curable conformal paint and its preparation method. The invention involves reacting dimethylethanolamine-modified chitosan with an organosilicon monomer to obtain an organosilicon-chitosan antibacterial agent. This agent is then mixed with polyurethane acrylate, an active diluent, and the organosilicon-chitosan antibacterial agent to obtain the silicone-modified acrylate UV-curable conformal paint. The organosilicon-chitosan antibacterial agent introduces water-resistant and salt-spray-resistant siloxane groups, reducing the adverse effects of hydrophilic quaternary ammonium salts and other groups on the water resistance and other properties of the paint film. This allows the paint film to maintain excellent waterproof, moisture-proof, and salt-spray-resistant properties. Furthermore, chitosan and organosilicon quaternary ammonium salts possess strong antibacterial properties, effectively killing bacteria and significantly improving the antibacterial and antifungal properties of the paint film.

The application relates to a binary ionic liquid lubricating additive and a preparation method and application thereof, the binary ionic liquid lubricating additive comprising ionic liquid I and ionic liquid II with a molar ratio of 1:1, wherein the ionic liquid I comprises cation precursor I and anion precursor I with a molar ratio of 1:1, the ionic liquid II comprises cation precursor II and anion precursor II with a molar ratio of 1:1, the cation precursor I and the cation precursor II are selected from any same one of ethanolamine, dimethylethanolamine and trioctylamine, and the anion precursor I and the anion precursor II are selected from any two different ones of valeric acid, heptanoic acid and di(2-ethylhexyl) phosphate. Compared with the prior art, the application has better anti-wear effect, and can make PAO4 base oil have excellent anti-wear property.

This invention discloses a novel anion exchange resin for adsorbing perchlorate ions and its preparation method. The novel anion exchange resin is prepared using polyvinylbenzyl chloride, dioxane, and N,N-dimethylethanolamine. This resin improves the adsorption efficiency and effect for perchlorate ions, has a high regenerability, can resist interference from complex systems, and enhances the stability and service life of the resin.

This invention relates to the field of water-based dip coating technology, specifically to a water-based single-component dip coating for engineering machinery chassis and its preparation method. The raw materials for preparing the water-based single-component dip coating, by weight, include: 10-20 parts self-emulsifying modified acrylic resin, 20-40 parts acrylic emulsion, 0.3-0.5 parts dimethylethanolamine, 1-7 parts ethylene glycol butyl ether, 0.1-1 parts defoamer, 1-3 parts water-based dispersant, 0.2-0.5 parts fumed silica, 0.2-0.5 parts bentonite, 10-25 parts pigment, 0.2-0.6 parts water-based drier, 0.5-2.5 parts film-forming aid, 0.2-0.5 parts substrate wetting agent, 0.3-0.7 parts flash rust inhibitor, 0.1-0.3 parts leveling agent, 0.1-0.3 parts thickener, and 20-50 parts deionized water. The water-based single-component dip coating for engineering machinery chassis provided by this invention has excellent oil resistance, can be applied with oil, does not rust, has excellent water resistance and salt spray resistance, low VOC content, and is environmentally friendly.

The application relates to the technical field of polymer surfactants, in particular to an oligomeric cationic surfactant and a preparation method and application thereof. The preparation method of the oligomeric cationic surfactant comprises the following steps: dimer acid and N,N-dimethylethanolamine are reacted under first reaction conditions to generate a tertiary amine intermediate; the tertiary amine intermediate, hydrochloric acid and epichlorohydrin are reacted under second reaction conditions to generate a hydrochloride intermediate; and the tertiary amine intermediate and the hydrochloride intermediate are reacted under third reaction conditions to generate the oligomeric cationic surfactant. The oligomeric cationic surfactant has a hydrophilic quaternary ammonium salt structure and a hydrophobic alkyl carbon chain structure, forms a viscous liquid with viscoelasticity after being dissolved in water, and can be used as a viscoelastic surfactant to carry sand for fracturing operations.