165 results about "Dimethylamine" patented technology

This disclosure relates to the use of di(alkyl substituted phenyl)amine antioxidants as additives in lubricant compositions having good oxidation properties in engine crankcase applications, especially in compression ignited engine and or spark ignited engine applications, where the antioxidant comprises from 0 to 10 mass% mono-C9-alkyl substituted diphenyl amine, and 90 to 100 mass% di-C9-alkyl substituted phenyl amines based upon the weight of the mono- and di-C9-alkyl substituted phenyl amines, preferably where tri-C9-alkyl substituted phenyl amines are minimized and ortho substituted di-C9-alkyl substituted phenyl amines are minimized.

The invention discloses an anti-scale cross-linked polymer fracturing fluid and a preparation method thereof, and relates to the technical field of petroleum fracturing fluids. When the anti-scale cross-linked polymer fracturing fluid is prepared, allylamine hydrochloride and epoxy chloropropane react to prepare a double-bond chlorinated intermediate; reacting the double-bond chlorinated intermediate with lauramidopropyl dimethylamine to prepare a cationic monomer; copolymerizing a cationic monomer and acrylamide to prepare a cationic polymer; the preparation method comprises the following steps: reacting L-lysine with formaldehyde and phosphorous acid to prepare phosphoric acid modified lysine; reacting the phosphoric acid modified lysine with allyl glycidyl ether to prepare a phosphoric acid modified monomer; acrylamide and an anionic monomer are copolymerized to prepare an anionic polymer; the anionic polymer and the cationic polymer are dissolved in water to prepare the anti-scale cross-linked polymer fracturing fluid. The anti-scale cross-linked polymer fracturing fluid prepared by the invention has the advantages of scale prevention, good temperature resistance, good shear resistance and self-crosslinking.

The invention provides a modified amine curing agent, a preparation method, epoxy resin anticorrosive paint and application, and belongs to the technical field of paint. The modified amine curing agent provided by the invention is prepared from preparation raw materials including alicyclic diamine, m-xylylenediamine, a first glycidyl ether reagent, a second glycidyl ether reagent and a glycidyl ester reagent through amination reaction, the alicyclic diamine contains at least one primary amine group; the first glycidyl ether reagent is ethylene glycol diglycidyl ether and / or bisphenol A type diglycidyl ether; and the second glycidyl ether reagent is 1, 4-butanediol diglycidyl ether and / or C12-14 glycidyl ether. The modified amine curing agent is combined with the curing characteristics of amide and phenolic aldehyde amine, the epoxy resin anticorrosive paint prepared from the modified amine curing agent has a proper curing speed, the adhesive force of a cured coating is high, the anticorrosive effect is good, and the epoxy resin anticorrosive paint is particularly suitable for a high-humidity environment and an underwater environment.

The invention belongs to the technical field of high polymer chemistry, and particularly relates to heat storage stable polyamide wax micro powder. The polyamide wax comprises polyamide wax micro-powder, preparation raw materials of the polyamide wax micro-powder comprise combined organic amine, and the combined organic amine comprises m-xylylenediamine and diamine with a linear symmetric structure; the modified nano titanium dioxide is obtained by carrying out surface modification on nano titanium dioxide through long-chain fatty acid. The modified nano titanium dioxide is added in the preparation process of the polyamide wax rheological agent, so that the thermal storage resistance of the polyamide wax rheological agent can be improved, and the anti-sagging performance of the polyamide wax rheological agent can be improved; according to the polyamide wax rheological agent, diamine with a linear symmetrical structure is used for replacing part of m-xylylenediamine, so that the thermal storage resistance of the polyamide wax rheological agent can be greatly improved.

The invention discloses weather-resistant water-based two-component epoxy paint and a preparation method thereof, and belongs to the technical field of paint. The weather-resistant water-based two-component epoxy paint comprises a component A and a component B, the component A comprises 50-70 parts by mass of a modified waterborne epoxy emulsion, 3-6 parts by mass of a pigment, 7-13 parts by mass of a modified filler, 0.3-1.5 parts by mass of a wetting dispersant, 2-4 parts by mass of a coalescing agent, 0.1-0.5 part by mass of a defoaming agent, 0.5-5 parts by mass of water and 0.5-1 part by mass of a leveling agent; the component B comprises 35-65 parts by mass of a modified curing agent, 10-20 parts by mass of ethanol and 30-40 parts by mass of water; the component A and the component B are mixed according to the mass ratio of 100: (20-30); the modified curing agent is obtained by reacting polyethylene glycol diglycidyl ether, epoxy resin, triethylene tetramine, functional organic silicon and phenyl glycidyl ether; the modified filler is obtained by modifying nano silicon dioxide with poly (m-xylylenediamine) and a silane coupling agent KH560; the modified water-based epoxy emulsion is a phytic acid modified water-based epoxy emulsion.

Provided are: an epoxy resin composition including an epoxy resin, an epoxy resin curing agent containing a reaction composition (A) containing a reaction product of xylylenediamine with an alkylene oxide, and a non-reactive diluent; and a cured product thereof.

This disclosure relates to the use of di(alkyl substituted phenyl)amine antioxidants as additives in lubricant compositions having good oxidation properties in engine crankcase applications, especially in compression ignited engine and or spark ignited engine applications, where the antioxidant comprises from 0 to 10 mass% mono-C9-alkyl substituted diphenyl amine, and 90 to 100 mass% di-C9-alkyl substituted phenyl amines based upon the weight of the mono- and di-C9-alkyl substituted phenyl amines, preferably where tri-C9-alkyl substituted phenyl amines are minimized and ortho substituted di-C9-alkyl substituted phenyl amines are minimized.

The disclosure relates to a method of producing a multi-metal catalyst film and of producing a reactor system for catalytic removal of a wide variety of contaminants (for example, nitrate, nitrite, perchlorate, chlorate, chromate, selenate, chlorophenols, 2,4-D, dicamba, atrazine, trichloroacetic acid, bromochloroiodomethane, NDMA, TCE, TCA, chloroform, freons, RDX, HMX, TNT, PFOA, and PFOS) from water and wastewater. The disclosure also relates to a method of using the multi-metal catalyst for the removal of such contaminants and a system comprising the multi-metal catalyst film for removing such contaminants.

The invention relates to a high-strength transparent copolymerized polyamide material and a preparation method thereof, and belongs to the technical field of high-molecular compound synthesis. The technical problem to be solved by the invention is to provide the high-strength transparent copolymerized polyamide material. Polymerized monomers of the polyamide material are m-xylylenediamine and diacid monomers, the diacid monomers are adipic acid and 9, 10-anthracene dicarboxylic acid, and the molar ratio of the 9, 10-anthracene dicarboxylic acid to the adipic acid is 0.5: 9.5-2: 8. Compared with the existing MXD6, the polyamide material MXD6 / ACDA disclosed by the invention has the advantages of better mechanical property, good light transmittance, lower water absorption rate and higher heat-resistant temperature. A one-step polymerization process is adopted, all stages from raw materials to a finished product can be completed in one reaction kettle, production equipment is small, operation is simple, the production period is short, energy consumption and cost are low, later tackifying is not needed, only water serves as a byproduct, the production process is environmentally friendly, and the reaction is mild and safe.

The present invention provides a method for neutralizing the odor (purifying), of a technical phthalimide-based fungicide comprising (1) mixing (i) slurry of phthalimide-based fungicide in water with (ii) ammonium hydroxide solution, preferably followed by, (2) filtration of the phthalimide-based fungicide and (3) drying.

The invention belongs to the technical field of blood glucose test paper, and particularly relates to rapid blood glucose detection test paper and a preparation method thereof. The blood glucose test paper is composed of a blood glucose test paper impregnation liquid and a test paper base material, wherein the test paper base material is composed of 10-20% of graphite powder, 10-15% of polyurethane resin, 5-10% of polybutylene terephthalate, 5-10% of polytrimethylene terephthalate, 5-10% of polyethylene, 5-10% of hydroxyethyl cellulose and 45-60% of ethylene glycol monobutyl ether; the blood glucose test strip impregnation liquid consists of 40-45% of phosphate buffer, 2-3% of glucose dehydrogenase, 40-45% of normal saline, 0.5-1% of ferric oxide, 0.5-1% of cobalt oxide, 2-3% of ascorbic acid and 1-3% of m-xylylenediamine; the prepared blood glucose test paper can still provide a more reliable result under the condition that blood glucose fluctuates greatly, has good stability, is slightly influenced by environmental factors, can give a result within four to five seconds, is reliable in measurement result, facilitates a user to know the blood glucose level in time, and is convenient for the user to use. And a patient can be helped to take measures quickly when the symptom of hypoglycemia or hyperglycemia occurs, so that crisis is avoided.

The invention provides an epoxy fireproof coating and a preparation method thereof, and belongs to the technical field of coatings. Comprising a component A and a component B. The component A comprises, by weight, 20-30 parts of silane modified novolac epoxy resin, 5-9 parts of an epoxy reactive diluent, 5-10 parts of aluminum hydroxide, 5-8 parts of melamine, 25-48 parts of ammonium polyphosphate, 0.5-1 part of expanded graphite, 6-8 parts of alumina fiber, 3-10 parts of barium sulfate, 3-5 parts of modified alumina and 2-5 parts of titanium dioxide. The component B is prepared from 40 to 50 parts of phenolic aldehyde amine and 50 to 60 parts of 1, 3-cyclohexanedimethylamine. The coating provided by the invention at least integrates fire prevention performance, corrosion resistance in a marine environment and normal-temperature curing performance, and is applied to fire steel structure fireproof and corrosion-resistant coatings of marine oil and gas platforms, petrochemical plant devices and the like.

The invention discloses a collection and treatment system for waste gas generated in a special fatty amine treatment process, and relates to the technical field of fatty amine waste gas treatment, the system comprises a waste gas collection unit, a waste gas treatment unit, a heat energy recovery unit, a heat energy utilization unit and a system design and control unit, the waste gas collecting unit is used for collecting waste gas, including but not limited to volatile organic compounds of ammonia, monomethylamine, dimethylamine, trimethylamine, hydrogen and trace methanol, generated in the production process of special fatty amine, and is provided with a pipeline and a fan, so that the waste gas is efficiently and safely conveyed to the subsequent waste gas treatment unit; by integrating the heat energy recovery technology, heat energy carried by waste gas in the special fatty amine production process is effectively captured and recovered and reused in the production process, energy waste is reduced, the overall energy utilization efficiency is improved, energy is saved, the production cost is reduced, and the influence on the environment is reduced.

The invention provides an ultrathin swelling-resistant GO cross-linked membrane as well as a preparation method and application thereof, and belongs to the technical field of nanofiltration separation membrane technology separation. The composite membrane comprises a cross-linked GO separation layer and a supporting layer, a m-xylylenediamine MXDA cross-linked GO layer is used as the separation layer, and a hydrolyzed polyacrylonitrile hPAN polymer membrane is used as the supporting layer; wherein the GO layer and the hPAN polymer film are covalently bonded through MXDA to form a cross-linked network. The preparation method comprises the following steps: firstly, respectively preparing graphene oxide GO; secondly, hydrolyzing a polyacrylonitrile (hPAN) matrix membrane; and finally, constructing a dual cross-linked network system through heat treatment, so that covalent cross-linked bonds are formed between GO nanosheet layers and between GO-hPAN base membranes, and the GO cross-linked membrane is prepared. The density of carboxylic acid groups on the surface of the hPAN membrane can be dynamically optimized by regulating and controlling the type of the basic catalyst, the concentration of the solution, the hydrolysis temperature and the hydrolysis time, a high-efficiency mass transfer channel is created for the composite membrane through a two-dimensional covalent cross-linked structure, and the composite membrane is endowed with excellent dye selective separation performance and anti-swelling stability.

According to the preparation method and application of the degradable epoxy resin, a Schiff base epoxy monomer and an alkyl glycidyl ether grafted amine curing agent are designed, and step-by-step polymerization crosslinking is realized according to different reaction activities of primary amine and secondary amine on epoxy groups in the epoxy resin. A microphase separation structure formed by the flexible chain in a cross-linked network plays a role in blocking crack propagation; meanwhile, under the stretching action of external force, molecular chain slippage of aggregates in the microcosmic phase separation structure occurs due to orientation, so that the elongation at break is increased. Moreover, due to the existence of a Schiff base bond, the epoxy resin shows degradability in an acidic aqueous solution or m-xylylenediamine before and after modification, so that cyclic utilization can be realized. Meanwhile, due to the existence of a flexible chain in the epoxy resin, the contact area between an epoxy matrix and an interface is increased, the adhesion performance is also greatly improved, and meanwhile, the epoxy resin has degradability.

The invention discloses a method for preparing m-xylylenediamine, a bubble generation component, a bubble generator and a three-phase bubbling bed reaction device.The problems that in the prior art, gas distribution is not uniform, the bubble generator is prone to being blocked, and the product quality is low are mainly solved, and the method comprises the steps that m-xylylenediamine is fed into a liquid-phase feeding section of the three-phase bubbling bed reaction device; hydrogen is fed through the bubble generator, so that the hydrogen is in contact with the m-xylylenediamine to generate the m-xylylenediamine. According to the invention, the conversion rate of the catalyst can be improved, the service life and regeneration period of the catalyst can be prolonged, and stable operation of the device is facilitated.

A resin composition which contains 10-300 parts by mass of reinforcing fibers per 100 parts by mass of a xylylenediamine-based polyamide resin that contains a diamine unit and a dicarboxylic acid unit, the diamine unit containing 70 mol% or more of a constituent unit derived from xylylenediamine, and the dicarboxylic acid unit containing 70 mol% or more of a constituent unit derived from xylylenediamine. The dicarboxylic acid unit contains 70 mol% or more of a structural unit derived from an alpha, omega-linear aliphatic dicarboxylic acid having 11 to 20 carbon atoms, and the xylylenediamine polyamide resin has a relative viscosity of 1.6 to 2.4.

A continuous production process of a xylylenediamine compound comprises the following steps: a, mixing an aromatic dinitrile raw material, an organic composite solvent, a catalyst and an auxiliary agent according to a preset proportion to form a reaction raw material, and conveying the reaction raw material to the lower part of a hydrogenation reactor; b, hydrogen is input from the bottom of the hydrogenation reactor in a jet mode, the reaction raw materials and the hydrogen are subjected to a contact reaction, and the hydrogen is further used for providing driving force needed by reaction material airlift; and c, conveying the reaction material to the upper part of the hydrogenation reactor, and carrying out cyclone separation operation and the like. A device for realizing the continuous production process comprises a hydrogenation reactor, a raw material supply unit, a hydrogen circulation supply unit, a product filtering unit, a product buffer tank and the like. The invention relates to the field of organic and fine chemical synthesis, realizes continuous, stable, automatic and simple production of xylylenediamine compounds, and has the technical advantages of simplifying the production process, optimizing the reaction conditions, improving the safety and economy, saving energy, reducing consumption and the like.

The invention relates to a novel diester-diamide compound and a water-soluble biodegradable polyesteramide polymer comprising a repeating unit derived from the same. Said DEDA can balance the crystallinity, water-solubility, thermal and mechanical properties and biodegradability of the resulting polymers.

This resin composition for an optical fiber coating contains a photopolymerizable compound, a photopolymerization initiator, and surface-treated copper phthalocyanine particles. The surface-treated copper phthalocyanine particle content is 0.1-10 mass% based on the total amount of the resin composition.

A non-aqueous ink composition which, even when containing a perinone-based pigment, can be suitably used as a non-aqueous ink composition that is ejected by an inkjet method. The non-aqueous ink composition ejected by an inkjet method contains a pigment, a pigment dispersant, an organic solvent, and a resin, wherein the pigment contains a pigment A represented by formula (1), and the content of the pigment dispersant is smaller than the content of the pigment.(In formula (1), X1-X12 each independently represent a hydrogen atom, a halogen atom, an optionally branched alkyl group having 1 to 5 carbon atoms, or an aromatic hydrocarbon group optionally substituted with a hydrogen atom, a cyano group, a nitro group, an amino group, —OH, —COOH, —COO—M+, —SO3H, —SO3−M+, a phthalimido group in which a hydrogen atom may be substituted, a phthalimidomethyl group, or a heterocyclic compound, and M+represents a cation.)

The invention relates to a method for preparing a tin-diol dry photoresist by using molecular layer deposition, which comprises the following steps of: preparing a tin-based mixed film by using a tetradimethylamine tin (tin tetrachloride) metal source and a diol organic source as raw materials through a molecular layer deposition (MLD) technology, and taking the tin-based mixed film as a high-resolution dry positive photoresist. The tin-based photoresist can be used in electron beam lithography (EBL), extreme ultraviolet lithography (EUVL) and beyond extreme ultraviolet lithography (BEUVL). Under 50 kilovolt electron beam exposure, the resolution ratio can reach 7 nanometers at 2000 [mu] C / cm < 2 >; under extreme ultraviolet exposure, the resolution ratio can reach at least 18 nanometers at 22 mj / cm < 2 >; under exposure beyond extreme ultraviolet, the resolution ratio at 520 mj / cm < 2 > reaches at least 32 nanometers. The tin-based mixed photoresist disclosed by the invention has a wide application prospect, and a new technical scheme is provided for developing a semiconductor dry photoresist with higher performance.

This invention discloses a method for preparing furan-based monomer-modified polyamide industrial yarn, comprising the following steps: 1) First, prepare carboxyl-terminated PA6 oligomers for later use; 2) Mix the carboxyl-terminated PA6 oligomers obtained in step 1) with diamine and 2,5-furandimethylamine, add a catalyst after uniform mixing, and carry out polymerization reaction in a closed oxygen-free reaction system. After the reaction is completed, discharge and pelletize to obtain furan-based monomer-modified polyamide chips; 3) Extract and dry the furan-based monomer-modified polyamide chips obtained in step 2), then melt spin them, and after cooling, oiling, stretching, heat setting and winding, obtain furan-based monomer-modified polyamide industrial yarn with a strength >8.2 cN / dtex and an elongation at break in the range of 10-25%, which can be used in the field of polyamide industrial yarns such as automotive seat belts and tire cords.

The invention discloses semi-aromatic bio-based polyamide and a preparation method thereof, and belongs to the technical field of macromolecular organic materials. Monomers 2, 5-furan dimethylamine, dodecanedioic acid, undecanedioic acid and sebacic acid are used as raw materials, and the disclosed semi-aromatic bio-based polyamide has rigidity of aromatic rings and flexibility of aliphatic chains and has good thermodynamic properties and mechanical properties. The oxygen permeability of the semi-aromatic bio-based polyamide protected by the invention is 0.005 ml / m < 2 > / 24h, the semi-aromatic bio-based polyamide has excellent gas barrier property, the degradation initial temperature is 348.6 DEG C, the maximum degradation temperature is 373.2 DEG C, the crystal melting point (Tm) of a polymer is 226.4 DEG C, the glass transition temperature (Tg) is 169.5 DEG C, the thermal stability is high, the thermal transition temperature is low, and the semi-aromatic bio-based polyamide has good processability.

A method for treating wastewater containing methanol, in which methanol is subjected to anaerobic treatment, is characterized in that organic nitrogen having 2-4 carbon atoms (excluding amino acids) is added. The organic nitrogen is at least one of tetramethylammonium hydroxide, trimethylamine and dimethylamine.

Provided are a resin composition, and a molded body and a multilayer body using the resin composition. A resin composition which contains at least one type of chloride selected from the group consisting of chlorides of alkali metals and chlorides of alkaline earth metals, and which contains a xylylenediamine-based polyamide resin that contains a structural unit derived from a diamine and a structural unit derived from a dicarboxylic acid, 70 mol% or more of the diamine-derived structural units are derived from xylylenediamine, and 70 mol% or more of the dicarboxylic acid-derived structural units are derived from a C4-20 [alpha], [omega]-linear aliphatic dicarboxylic acid.

Provided is a method for producing a cycloolefin, comprising subjecting a monocyclic aromatic hydrocarbon to partial hydrogenation reaction with hydrogen in an aqueous zinc sulfate solution in the presence of a ruthenium catalyst, wherein the aqueous zinc sulfate solution contains dimethylamine, and the partial hydrogenation reaction is performed with a nitrogen concentration in the aqueous zinc sulfate solution adjusted to 0.5 to 3000 mg / L or an acetic acid concentration in the aqueous zinc sulfate solution adjusted to 1 × 10-3 to 100 mg / L.

The invention discloses an adhesive for an aluminum-plastic film and a manufacturing method thereof, and is characterized in that an adhesive layer is positioned between an aluminum foil layer and a polypropylene film layer of the aluminum-plastic film, and the adhesive layer is formed by the adhesive; the adhesive is prepared from the following components in parts by weight: 100 parts of maleic anhydride modified styrene, 10 to 20 parts of chlorinated polypropylene butylene, 2 to 5 parts of hydrogenated bisphenol A epoxy resin, 1 to 3 parts of curing agent, 0.5 to 1 part of tackifying resin, 2 to 5 parts of benzyl dimethylamine or pyridine, 0.5 to 2 parts of 3, 5-diethyltoluenediamine, 0.2 to 1 part of antioxidant and 200 to 300 parts of organic solvent. According to the adhesive for the aluminum-plastic film and the manufacturing method of the adhesive, disclosed by the invention, the bonding strength stability between an aluminum foil layer and a polypropylene film layer in a high-temperature hot bath at 60 DEG C exceeds 48 hours, so that the high-temperature resistance and the high-humidity resistance of the aluminum-plastic film are improved, and the reliability and the weather resistance of the lithium battery packaging aluminum-plastic film are improved.

This invention belongs to the field of polymer synthesis materials technology, specifically relating to a long-chain semi-aromatic MXD nylon material and its preparation method. The material is made from components comprising the following weight percentages: m-phenylenediamine 31%-41%, long-chain dicarboxylic acid 59%-69%, nucleating agent 0.05%-0.1%, catalyst 0.03%-0.05%, antioxidant 0.03%-0.05%, and solvent 100%-200%; the long-chain dicarboxylic acid is selected from C... 10 -C 18 This invention relates to a series of dicarboxylic acids. Through molecular structure design, synergistic additives, and process optimization, the prepared MXD nylon material achieves a synergistic balance of ultra-low water absorption, high barrier properties, and high toughness, overcoming the shortcomings of traditional MXD6, such as high brittleness and high water absorption. The process is green and environmentally friendly, with excellent processing performance, and can be widely used in high-barrier packaging, automotive, and electronic and electrical fields.

The invention relates to the field of coating rheological additives, in particular to heat storage stable type polyamide wax and a preparation method and application thereof.The polyamide wax comprises a polyamide wax matrix which is formed by polycondensation of an organic amine combination containing m-xylylenediamine and linear symmetric diamine and an acid component; polyamide fragments are bonded on the surface of the lamellar silicate nucleating agent through ion exchange; the polyamide fragment is formed by condensation of fatty acid and diamine. According to the preparation method, linear symmetric diamine is introduced into a polyamide wax matrix through a unique'molecular conformation optimization-defect targeted closing 'synergistic mechanism, so that the inherent defect density of the crystal is greatly reduced, and meanwhile, lamellar silicate bonded with polyamide fragments is used for accurately covering residual defect sites, so that a molecular-level physical barrier for blocking solvent invasion is formed; therefore, the coating still keeps the anti-sagging performance close to the initial state after being stored at a high temperature for a long time, and the problem of rheological failure caused by collapse of a crystal structure of a solvent type coating is thoroughly solved.