64 results about "Mannich base" patented technology

The invention discloses a low-temperature fast-curing two-component resin adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The resin adhesive is formed by mixing a component A and a component B, the component A comprises epoxy-acrylate hybrid resin, a reactive diluent, a nano reinforcing filler and the like, and the component B comprises a modified aliphatic amine curing agent, a microcapsule low-temperature efficient accelerant, a Mannich base curing agent and the like. Through the synergistic effect of a quaternary curing system and in combination with the rigid-flexible balance design of the hybrid resin, rapid curing at low temperature is achieved, and high strength, high toughness and good storage stability are achieved. The resin adhesive is suitable for the fields of bonding of automobile parts, packaging of electronic elements, repairing of wind power blades, sealing of building structures and the like, and particularly solves the problems that a traditional resin adhesive is slow in low-temperature curing and insufficient in performance.

The invention relates to the technical field of lubricating oil, and discloses a low-temperature-resistant lubricating oil composition and a preparation method thereof. Mineral oil, modified polymethacrylate, a dispersing agent, an antioxidant and an oil defoaming agent are stirred and mixed and then filtered, and the low-temperature-resistant lubricating oil composition is obtained. The cross-linking agent enables polymethacrylate to form a light cross-linked structure, and stress can be dispersed during shearing; nitrogen atoms in triazinyl, pyridyl, pyrrolidone and Mannich base structures serve as hydrogen bond receptors, the hydrogen bond interaction with hydroxyl on a polymethacrylate molecular chain is enhanced, a physical cross-linked network is formed, and the shear resistance is further improved; in the modified low-temperature-resistant monomer, the glass-transition temperature can be remarkably reduced by high flexibility of silicon oxygen bonds in long straight-chain alkyl and silane groups, so that a molecular chain can still move at a low temperature, and the low-temperature fluidity of the lubricating oil is improved; the cyclic structure of cyclohexyl can effectively interfere with the ordered arrangement of wax crystals, reduce the pour point of the lubricating oil and improve the low-temperature fluidity.

The invention discloses a smoke-suppression flame-retardant ecological board and a preparation method thereof. The ecological board comprises a base material, a flame-retardant adhesive layer and a facing layer which are sequentially stacked, wherein the flame-retardant adhesive layer is prepared from the following raw materials: 100 parts of urea-formaldehyde resin, 10-15 parts of a phosphorus-nitrogen composite flame retardant and 5-10 parts of flame-retardant filler; the preparation method of the phosphorus-nitrogen composite flame retardant comprises the following steps: carrying out an aminomethylation reaction on p-hydroxybenzoic acid, ethanolamine and paraformaldehyde which are used as raw materials in a molar ratio of 1: (1-1.2): (2-2.2) to prepare a Mannich base intermediate; and carrying out substitution reaction on the Mannich base intermediate and phosphonitrilic chloride trimer serving as raw materials according to the molar ratio of (3-7): 1. The phosphorus-nitrogen flame retardant disclosed by the invention is high in content of phosphorus and nitrogen elements and uniform in distribution ratio, and has more excellent synergistic smoke suppression and flame retardant effects compared with an existing physical compound system.

The invention discloses an icaritin derivative, a composition and application, the structural formula of the icaritin derivative is as follows: in the structural formula, R1 is independently selected from hydrogen, hydroxyl and C1-C3 alkoxy; r2 is independently selected from hydrogen, an isopentenyl group, an isoamyl group and a Mannich base; r3 is independently selected from hydrogen, hydroxyl or OR3 ', R3 'is selected from rhamnosyl, rhamnose-(2-> 1)-glucosyl, rhamnose-(3-> 1)-glucosyl, propynyl and triazole groups substituted by alcoholic hydroxyl, benzyl and glycosyl; r4 is independently selected from a hydroxyl group or OR4 ', and R4' is selected from a propynyl group, a glucosyl group, and an alcoholic hydroxyl group, a benzyl group and a glycosyl substituted triazole group; r5 is independently selected from hydrogen, isopentenyl and Mannich base; mannich base is selected from N (CH3) 2 and N (CH2CH3) 2, R6 is independently selected from hydroxyl and OR6 ', and R6' is selected from hydrogen, rhamnosyl, rhamnose-(2-> 1)-xylosyl and rhamnose-(2-> 1)-rhamnosyl.The icaritin derivative provides a new direction for treatment of sarcopenia.

The invention relates to a method for detecting a clearing agent main agent in gasoline, and the method comprises the following steps: carrying out thin-layer chromatography detection on a to-be-detected sample, and determining the composition of the clearing agent main agent in the concentrated to-be-detected sample according to color spot distribution on an obtained thin-layer chromatography plate, wherein the clearing agent main agent comprises one or more of a polyether amine clearing agent, a polyisobutene amine clearing agent and a Mannich base clearing agent; the thin-layer chromatography detection sequentially comprises developing and developing treatment; a developing agent for developing comprises one or more of a developing agent I, a developing agent II and a developing agent III; the developing solvent I is methanol, and the developing solvent II and the developing solvent III comprise one or more of alcohol with the carbon atom number of 1-6, aliphatic hydrocarbon with the carbon atom number of 5-12 and cycloalkane with the carbon atom number of 5-12. According to the method provided by the invention, whether the clearing agent main agent is added into the sample to be detected or not can be rapidly determined, and the type of the clearing agent main agent can be rapidly and accurately detected.

The application relates to the field of CO2 utilization and storage technology, and discloses a double Mannich base corrosion inhibitor as well as a preparation method and application thereof. The method is carried out under the condition that the pH is 3-4; the method comprises the following steps: (1) in the presence of ethanol, a compound shown in formula (A) is subjected to a first reaction with 1,3,5-trioxane to obtain an intermediate product; in formula (A), R is -(CH2)7CH=CH(CH2)7CH3; (2) in the presence of ethanol, the acetophenone is added dropwise into the intermediate product to carry out a second reaction, so that the double Mannich base corrosion inhibitor is obtained; the dropwise speed of the acetophenone is 0.0125-0.05 mL / s relative to 1 mol of the compound shown in formula (A); wherein the molar ratio of the compound shown in formula (A), the acetophenone and the 1,3,5-trioxane is 1:2.0-2.3:2.0-2.3. Formula (A).

The present application relates to the field of pharmaceutical chemistry, and specifically discloses a emodin mannich base, a preparation method and application thereof. The emodin mannich base has a structure as shown in formula I, the structure is simple, has strong in-vitro antimicrobial activity, especially high inhibitory activity to staphylococcus aureus, bacillus subtilis, micrococcus luteus, escherichia coli, proteus vulgaris, pseudomonas aeruginosa, shigella dysenteriae, salmonella typhimurium and other bacteria, and candida utilis, candida albicans, saccharomyces cerevisiae, monascus and other fungi, and can be used for preparing antibacterial and / or antifungal drugs.

The invention relates to the technical field of CO2 utilization and storage, and discloses a bis-Mannich base corrosion inhibitor as well as a preparation method and application thereof. The method is carried out under the condition that the pH is 3-4. The method comprises the following steps: (1) in the presence of ethanol, carrying out first reaction on a compound as shown in a formula (A) and 1, 3, 5-trioxane to obtain an intermediate product; in formula (A), R is-(CH2) 7CH = CH (CH2) 7CH3; and (2) in the presence of ethanol, dropwise adding acetophenone into the intermediate product for a second reaction to obtain the bis-Mannich base corrosion inhibitor, the dropping rate of acetophenone is 0.0125-0.05 mL / s relative to 1 mol of the compound as shown in the formula (A); wherein the molar ratio of the compound shown in the formula (A) to the acetophenone to the 1, 3, 5-trioxane is 1: (2.0-2.3): (2.0-2.3). Formula (A).

The application discloses a kind of quaternary ammonium mannich base, quaternary ammonium mannich base multifunctional fuel additive and its preparation method and application.The quaternary ammonium mannich base, its structural formula is as shown below:Wherein, m=10~90, preferably m=15~80;N=0~20, preferably n=2~10;R1, R2, R3 same or not same, respectively independently H or C1-C4 alkyl;R4 is H, CH3 Or C2H5;R5 is C3-C8 alkyl or aryl, preferably C3-C8 alkyl;R6 is CH3 Or C2H5;X is SO4 Or CO3.The multifunctional fuel additive comprising quaternary ammonium mannich base of the application not only has good dispersibility, has the effect of reducing the accumulation amount of vehicle engine carbon deposit, but also can effectively reduce the balance point temperature, solve diesel engine particulate filter (DPF) passive regeneration failure, reduce the number of active regeneration, prolong regeneration mileage.

This invention belongs to the field of coolant technology, specifically relating to a coolant and its application in an immersion liquid-cooled energy storage system. The coolant, by weight, comprises 80-95 parts base oil, 1-5 parts thermally conductive nanoparticles, 0.5-2 parts composite dispersant, 0.3-1 part composite corrosion inhibitor, 0.1-0.5 parts antioxidant, 0.2-0.5 parts pour point depressant, and 0.01-0.05 parts defoamer. The base oil is a mixture of polyalphaolefin and synthetic ester, and the composite dispersant is a compound of polyisobutylene succinimide and Mannich base dispersant. Aging tests show that this coolant exhibits high thermal conductivity retention, low acid value increase, and low corrosion rate. The coolant of this invention can effectively maintain the dispersion stability of nanoparticles in the environment of precipitates from sealing materials, extending the fluid change cycle.

The present application belongs to the field of medicinal chemistry and pharmacotherapy, and particularly relates to a chalcone mannich base compound, a pharmaceutical composition and a preparation method and application thereof. The present application takes paeonol as a raw material, and obtains corresponding 3-substituted and 5-amino-methyl-substituted paeonol mannich base through mannich reaction of paeonol, polyoxymethylene and different organic amines. After the 3-substituted and 5-substituted paeonol mannich base is separated through column chromatography, the chalcone mannich base compound is obtained through Claisen-Schmidt reaction of the 3-substituted and 5-substituted paeonol mannich base and benzaldehyde containing different substituents. Experiments prove that the chalcone mannich base compound improves the physical and chemical properties of the chalcone mannich base and improves the drug efficacy, can solve the problem of poor water solubility, and has good anti-tumor cell proliferation activity.

The application belongs to the technical field of polyurethane grouting materials, and discloses a high polymer grouting material capable of being rapidly cured in a low-temperature environment, which is formed by mixing A component and B component, and the content of each component is as follows in terms of weight fraction: A component: 100 parts of polymethylene polyphenyl polyisocyanate; B component: 35 parts of polyether polyol A, 15 parts of polyester polyol B, 5-15 parts of Mannich base, 10 parts of flame retardant, 1.5 parts of foaming catalyst, 0.5 parts of gel catalyst, 0.5 parts of surfactant, 5 parts of physical foaming agent, 1.0 parts of chemical foaming agent and 5 parts of plasticizer. The Mannich base curing agent is added to the B component during preparation of the two-component polyurethane grouting material, and is uniformly mixed with other materials, so that the high polymer grouting material can be rapidly cured in a low-temperature environment.

The invention discloses a fifth-generation gasoline detergent and a preparation method and application thereof.The detergent is prepared from, by mass, 5.1%-16% of azole polynitrogen compounds with the carbon atom number being 6-12 and the nitrogen atom number being 3-6, 40.1%-48% of Mannich base detergent dispersants with the number containing C8-14, 5.1%-12% of organic acid R6-12 hydrazine catalytic auxiliaries, 1.4%-3% of antioxidants and 30%-49.5% of C8-12 straight-chain alkane. The preparation method comprises the following steps: mixing the components according to the proportion, and filtering through a 1-1.5 mu m filter screen. The additive amount of the cleaning agent is 200-220 mL / m < 3 >, sufficient combustion of gasoline can be promoted, the emission amounts of CO, HC and NOx in tail gas are reduced by 30%, 33% and 19% respectively, the fuel saving rate reaches 10.24-14.01%, the power of an engine can be improved, and an automobile is assisted to meet the strict emission standard.

This invention discloses a novel method for preparing a clean fuel additive, relating to the field of clean fuel additive technology. Its components include: a main cleaning agent: Mannich base; a dispersant: polyetheramine; a surfactant: highly active polyisobutylene; an antioxidant: N,N-di-sec-butyl-p-phenylenediamine; an octane booster: dimethyl carbonate; a solvent: 120# solvent oil; a combustion improver: C9-C11 mixed olefins; a stabilizer: trimethylolpropane; an ignition promoter: nitrobenzene; and auxiliary additives: n-dodecane, sodium polystyrene sulfonate, and eugenol methyl ether. This invention achieves a significant synergistic effect among the core components such as Mannich base, polyetheramine, polyisobutylene, amine antioxidants, and dimethyl carbonate. This synergistic effect allows the additive to comprehensively optimize the cleanliness, anti-knock properties, stability, and combustion efficiency of fuel at a relatively low total addition amount.

The invention relates to a Mannich base useful as an epoxy curative agent. In particular, the present invention is directed to a Mannich base derived from furfuryl alcohol, or a homopolymer or co-polymer thereof, an epoxy resin curative composition comprising the Mannich base, a cured epoxy resin obtainable using the composition, processes for preparing the Mannich base and uses thereof. An example of a Mannich base derived from furfuryl alcohol in accordance with the present invention is shown below (Structure I):

The invention relates to the technical field of corrosion inhibitors in the pickling industry, in particular to a preparation method and application of a Mannich base thiadiazole quaternary ammonium salt corrosion inhibitor for methanesulfonic acid pickling. According to the method, amino thiadiazole is modified by Mannich, quaternization is further performed, and the thiadiazole corrosion inhibitor with the advantages of Mannich base and quaternary ammonium salt is obtained. Quaternary ammonium salt groups in corrosion inhibitor molecules endow the corrosion inhibitor with good water solubility, and the dispersity and adsorbability of the corrosion inhibitor in an acid solution are improved; thiadiazole ring, thioamide and the like contained in the corrosion inhibitor contain N and S atom groups, so that coordination with metal is facilitated, and the adsorption performance of the corrosion inhibitor is improved; and the tail alkyl chain can effectively isolate corrosive substances from being in contact with a metal matrix. The preparation method is simple in synthesis step and low in raw material cost, and the obtained corrosion inhibitor is excellent in corrosion inhibition effect. Under the condition of 353 K, the highest corrosion inhibitor efficiency on Q235 steel in methanesulfonic acid with the molar concentration of 0.5 M reaches 99.8%.

The invention relates to the technical field of pesticides, and discloses a slow-release herbicide and a preparation method thereof. Carboxymethyl cellulose is used as a matrix, acrylic acid and Mannich base modified nano silicon dioxide are used as monomers, modified cellulose-based hydrogel is prepared through a graft copolymerization method under the action of an imidazoline modified cross-linking agent, herbicide composite dispersion liquid and the modified cellulose-based hydrogel are mixed, freeze drying is performed, and the slow-release herbicide is obtained. Nitrogen atoms in an imidazoline group, a pyrrolidone group and a Mannich base structure are used as hydrogen bond receptors, so that hydrophilic sites of the cellulose-based hydrogel are increased, and the water retention capacity is improved; the modified nano silicon dioxide is used as an inorganic nano filler and is uniformly dispersed in a hydrogel network, rigid particles of the nano silicon dioxide can be used as physical crosslinking points to support a flexible network formed by cellulose molecular chains, network collapse in the swelling process is reduced, the porosity is increased, the water storage space is enlarged, and the water retention capacity is improved.

This invention relates to the field of epoxy resin composite materials technology, specifically to an environmentally friendly epoxy resin composite material for the lining of fructose syrup storage and transportation tanks and its preparation method. The composite material of this invention consists of bisphenol F type epoxy resin, a flexible curing agent, nano-antibacterial reinforcing fillers, and additives. The flexible curing agent is a dimer acid-polyetheramine-cashew phenol Mannich base condensation polymer, and the nano-antibacterial reinforcing filler is nano-TiO2@ε-polylysine-silane coupling agent hybrid particles. The composite material of this invention possesses excellent flexibility, acid resistance, antibacterial properties, and low water absorption; it also exhibits strong adhesion, no migration of heavy metals or toxic organic antibacterial agents, and meets food contact safety regulations, making it suitable for the lining protection of fructose syrup storage and transportation tanks.

A curing agent composition, comprising a) 10-60 wt. %of a Mannich base, or / and an epoxy adduct, b) 20-70wt. %of a polyamide curing agent based on a polyamine and a multifunctional fatty acid; and c) 10-30 wt. %of 1-naphthol, or / and 2-naphthol; and optionally an accelerator and optionally an organic solvent. An amine-epoxy composition, a cured product produced from the amine-epoxy composition, an article of manufacture, use of the curing agent composition as a hardener for an epoxy resin, and use of the curing agent composition to prepare a curing agent of an epoxy resin are also provided.

According to the polyphenol-doped cardanol-based Mannich base type anticorrosive epoxy curing agent and the preparation method thereof, natural polyols such as resveratrol and the like are introduced, the crosslinking efficiency is effectively improved through rich phenolic hydroxyl groups of the natural polyols, and the natural polyols and cardanol cooperate to construct a rigid-tough balanced compact three-dimensional network; therefore, the mechanical strength and corrosion resistance of the coating are remarkably enhanced. The curing agent is adjustable in structure and good in compatibility with waterborne epoxy, main raw materials are derived from renewable resources, the curing agent has high performance and environmental protection characteristics, and a new direction is provided for development of waterborne epoxy anticorrosive coatings.

A fluorescent Mannich base for use as an epoxy resin hardener which comprises a Mannich base, and a fluorophore where the Mannich base comprises a amine nitrogen bonded to an SP3 hybridised carbon whi

The invention relates to the technical field of fertilizers, and discloses a biomass fertilizer for improving a soil environment and a preparation method thereof. A lignin grafted copolymer and modified sodium alginate are used as raw materials, a calcium ion in-situ gel method is used for preparing composite hydrogel, and biomass charcoal, urea and monopotassium phosphate are added into the hydrogel, so that the biomass fertilizer for improving the soil environment is obtained. Pyrrole groups in the lignin grafted copolymer and nitrogen atoms in a Mannich base structure are used as hydrogen bond receptors, so that the hydrogen bond interaction with a hydrogel molecular chain is enhanced, and the water retention capacity of the fertilizer is improved; a rigid structure of the lignin also plays a role in a gel network, collapse of a cross-linked network is reduced, so that a richer three-dimensional pore structure is formed, and the water retention effect of the fertilizer is enhanced; the quaternary ammonium salt group can cause exosmosis of bacterial substances by destroying a bacterial cell membrane structure, so that the antibacterial effect of the fertilizer is enhanced; thioureido can be combined with enzyme in bacterial cells to achieve an antibacterial effect.

The application relates to the field of oil and gas development, and discloses a Mannich base quaternary ammonium salt compound, a preparation method of the compound, an acid corrosion inhibitor, acid liquid and application of the acid liquid. The compound has the structure shown in formula (1): wherein R1 and R2 are each independently selected from hydrogen, C1-C5 linear alkyl and C3-C5 branched alkyl; and X is selected from one or more of F, Cl and Br. The corrosion inhibitor system has high temperature resistance and excellent corrosion inhibition performance, so that the corrosion resistance of oil and gas exploitation equipment can be improved, and the safety, stability and efficiency of the oil and gas exploitation process can be improved.

The utility model discloses stirring equipment for Mannich base synthesis, and relates to the technical field of Mannich base synthesis. The reaction kettle comprises a reaction kettle shell, wherein a stirring mechanism and a discharging mechanism are arranged on the reaction kettle shell; the stirring mechanism comprises a driving assembly, a material mixing assembly and an auxiliary stirring assembly, the driving assembly comprises a motor fixedly connected to the reaction kettle shell, the reaction kettle shell is fixedly connected with a connecting cylinder, the connecting cylinder is rotationally connected with a limiting ring, the limiting ring is fixedly connected with a rotating cylinder, and the rotating cylinder is fixedly connected with a first rotating shaft. Through the stirring mechanism, the motor is used for driving the spiral blades to rotate through the first rotating shaft, a second raw material flows into the adapting pipe through the first feeding pipe in cooperation with the rotating cylinder, the adapting pipe is driven by rotation to uniformly mix the second raw material into the first raw material, and it is guaranteed that the two raw materials react uniformly and fully; the situation that the two raw materials are not completely stirred to cause poor reaction is avoided to a certain extent.

The invention relates to a class of amido-amines useful as curatives and having a high degree of biological based carbon content. In particular, the invention is directed to compounds comprising at least one amide group and at least one Mannich base, polymeric compounds comprising a repeating unit having at least one amide group and at least one Mannich base, a resin curative composition comprising such compounds, processes for preparing them and uses thereof. In one aspect, the present invention provides a compound of formula (1) below, wherein A, Y, Y1, Z, Z1, x, y, n, m, R and R1 are as defined herein.

This invention belongs to the field of acidizing technology in oil and gas field development, and discloses a Mannich base quaternary ammonium salt corrosion inhibitor for ultra-high temperature well acidizing and its preparation method. The corrosion inhibitor is composed of 35%~55% by mass of a novel Mannich base quaternary ammonium salt, 30%~60% by mass of an organic solvent, and 5%~15% by mass of a corrosion inhibitor synergist. The novel Mannich base quaternary ammonium salt has a specific molecular structure and is synthesized by reacting modified aromatic aldehydes, aromatic ketones, and organic secondary amines. Its molecular skeleton incorporates rigid groups and long-chain hydrophobic groups, which can form a dense adsorption film on the metal surface and significantly improve thermal stability. The corrosion inhibitor of this invention exhibits excellent corrosion inhibition performance in an ultra-high temperature acidic environment of 200℃, solving the problems of easy decomposition and non-dense adsorption film of existing corrosion inhibitors at high temperatures.

The application discloses a 9-position Mannich base-containing tetracycline compound and a preparation method and application thereof. The preparation method comprises the following steps: reacting a compound shown as formula I-A, a compound shown as formula SM-1 and formaldehyde in a solvent to obtain a compound shown as formula I. The method has the advantages of simple steps, mild reaction conditions, strong operability, and the like, and the product with high yield and purity can be obtained through simple purification. The compound shown as formula I can be used for treating diseases caused by bacterial, viral or microbial infections.

The invention relates to the technical field of building materials, and discloses high-strength asphalt concrete and a preparation method thereof. The high-strength asphalt concrete is obtained by mixing SBS modified asphalt, basalt, limestone, limestone mineral powder, cement, modified lignin, modified acrylate emulsion, a polycarboxylate superplasticizer and water. Amino in the modified lignin and silicon hydroxyl on the surface of the aggregate can be subjected to dehydration condensation, triazinyl, pyrrolyl and nitrogen atoms in a Mannich base structure and hydroxyl in a cement hydration product form hydrogen bonds, the bonding strength of an aggregate-cement paste interface transition area is enhanced, and then the strength of the asphalt concrete is improved; due to the rigid conjugated structure of fluorenyl, a reticular membrane structure formed by the modified acrylate polymer in the concrete is more compact, and microcrack propagation is reduced; the introduction of sulfonic groups increases calcium ion contact sites on polymer chain segments, enhances chemical bonding of aggregate and a cement matrix, and further improves the strength of asphalt concrete.

The present application belongs to the field of gasoline additives for vehicles, and particularly relates to a high-efficiency composite gasoline additive and a preparation method thereof. The high-efficiency composite gasoline additive comprises the following components: a detergent 30-60%, a dispersant 10-20%, a demulsifier 1-5%, a corrosion and rust inhibitor 1-5%, and solvent oil in a residual amount. The detergent comprises Mannich base and polyether amine, and the mass ratio of the two substances is 8:9-7:5. The additive has a small injection amount, and has a good cleaning effect on both simulated intake valves and combustion chamber deposits. The additive can significantly reduce the emission of environmental gas pollutants.

The invention relates to the technical field of engine oil, in particular to engine oil which comprises the following components in parts by weight: 100 parts of hydrogenated base oil, 5-10 parts of a purification dispersant, 0.2-1.2 parts of an antioxidant, 2-8 parts of an anti-wear agent and 1.7-4.2 parts of a metal deactivator, the purification dispersant is styrene modified polyisobutene phenol Mannich base quaternary ammonium salt. The lubricating oil can effectively reduce generation of sediments, prevents engine abrasion, and is low in viscosity and not prone to blockage.