70 results about "Trimethylamine" patented technology

The invention discloses microcapsule powder for covering the oil smell of euphausia superba oil and a preparation method of the microcapsule powder, and belongs to the field of euphausia superba oil processing. The microcapsule powder is composed of 50-75% of OSA starch, 10-30% of euphausia superba oil, 3-20% of sodium alginate, 1-10% of succinic acid and 0.5-5% of calcium hydrophosphate, during preparation, the OSA starch is gelatinized and then sheared and homogenized with the euphausia superba oil to obtain a miniemulsion, the succinic acid, the sodium alginate and the calcium hydrophosphate are prepared into a mixed solution, the mixed solution is mixed with the miniemulsion in proportion, and spray drying is performed to obtain a finished product. An OSA starch-sodium alginate double-wall material system is adopted, a compact cross-linked layer is formed through pH response, peculiar smell substances such as trimethylamine can be completely masked, the astaxanthin retention rate is up to 95.14%, the embedding rate reaches 89.48%, krill oil oxidation is effectively inhibited, krill oil is converted into powder, the stability and the sensory property are improved, application of krill oil in the food field is widened, the technology is simple, and the method is suitable for industrial production. The method is suitable for industrial production.

The invention belongs to the technical field of aquatic product preservation, and particularly relates to a protein-based intelligent gel label with aquatic product freshness indication and mechanical properties as well as a preparation method and application of the protein-based intelligent gel label. The preparation method comprises the following steps: mixing an ovalbumin solution with a chitosan-anthocyanin compound solution, and incubating under the action of a Ca < 2 + > ion slow release system of calcium sulfate. The intelligent gel label for indicating the freshness of the aquatic products is applied to monitoring of the freshness of the shrimps, the color of the intelligent gel label changes along with the decay degree of the shrimps, the intelligent gel label correspondingly shows different color changes under different trimethylamine concentrations, TVC values, pH values and TVB-N values, and the intelligent gel label has the advantages of being high in sensitivity, good in mechanical performance and high in stability; the food-grade safe and reliable visual monitoring of the freshness of the aquatic products is realized.

The invention discloses a device and a method for testing degradation and dissolution quantity of ion exchange resin, and relates to the field of performance testing of ion exchange resin. An inlet of a peristaltic pump is communicated with a liquid outlet of a liquid inlet box, an outlet of the peristaltic pump is communicated with an inlet of a temperature control heater, the upper end of an exchange column is communicated with an outlet of the temperature control heater, and the lower end of the exchange column is connected with a liquid storage box; the liquid storage tank is connected with the second gas collector, and the nitrogen cylinder gas conveying pipe penetrates into the liquid storage tank. Water washing or pretreatment is completed before testing, then heating temperature is set according to operation conditions, demineralized water or treating fluid is introduced into an exchange column, when gas-phase degradation products need to be collected, the gas-phase degradation products are collected through a first gas collector and a second gas collector, and if the sample is anion exchange resin, high-purity nitrogen is introduced into a liquid storage tank through a nitrogen cylinder, and the sample is collected through a second gas collector. The volatile organic matter is purged into a second gas collector, and finally the degradation and dissolution amount of the ion exchange resin is calculated according to TOC or chemical oxygen demand, the concentration of methanol and trimethylamine and the content of sulfate radicals or ammonia nitrogen.

Provided is a cosmetic containing ascorbic acid and / or a salt thereof, which has excellent stability and reduced irritation to the skin. The cosmetic according to the present invention contains ascorbic acid and / or a salt thereof, ultrapure water, and an antioxidant, and the salt of ascorbic acid is at least one selected from the group consisting of a trimethylamine salt, a triethylamine salt, a monoethanolamine salt, a triethanolamine salt, a pyridinium salt, an arginine salt, an ammonium salt, a sodium salt, a potassium salt, a calcium salt, a magnesium salt, and an aluminum salt of ascorbic acid. The antioxidant is glutathione or sodium pyrosulfite, the pH of the cosmetic material is adjusted to 5.0-7.0, and the dissolved oxygen content of the cosmetic material is 0-5 mg / L.

This invention discloses a cationic etherifying agent and its preparation method, belonging to the field of cationic etherifying agent production technology. The preparation method includes: continuously feeding trimethylamine and hydrochloric acid into a raw material pretreatment unit, pre-cooling to -10~20℃; entering a first tubular reactor, reacting at -10℃~20℃ and 0.15MPa for 10~60 minutes to generate trimethylammonium chloride; trimethylammonium chloride and epichlorohydrin entering a static mixer, simultaneously adding a catalyst and an organic amine; entering a second tubular reactor, reacting at 10~50℃ and 0.2MPa for 1~3 hours; during the reaction, monitoring the chloride ion concentration and epichlorohydrin residue in real time, dynamically adjusting the reaction parameters; filtering the reaction product through a nanofiltration membrane to obtain a high-purity cationic etherifying agent. This invention employs a continuous tubular reaction process combined with automatic control and nanofiltration membrane separation, resulting in a short production cycle, low energy consumption, few by-products, and a high-purity, odorless product, showing good industrial application prospects.

The invention discloses a cross-linked polystyrene anion exchange membrane as well as a preparation method and application thereof. The preparation method of the cross-linked polystyrene anion exchange membrane comprises the following steps: firstly, taking styrene and p-chloromethyl styrene as monomers, and obtaining a copolymer through bulk polymerization under the action of an initiator; the preparation method comprises the following steps: firstly, preparing a copolymer from polystyrene, then preparing a membrane casting solution from the copolymer and 1, 4-diazabicyclo [2.2. 2] octane, casting to form a membrane, then immersing the obtained membrane into a trimethylamine aqueous solution for complete quaternization, and finally treating in a KOH aqueous solution to obtain the cross-linked polystyrene anion exchange membrane. The invention provides an application of the cross-linked polystyrene anion exchange membrane in alkaline electrolyzed water. The anion exchange membrane is simple in synthesis process, reagents are cheap and easy to obtain, the contradiction between the OH <-> conductivity and the size stability of a traditional anion exchange membrane can be greatly balanced, and meanwhile the anion exchange membrane has high alkaline stability and shows excellent electrolytic performance in alkaline electrolyzed water.

The present invention relates to the technical field of the preparation of macrocyclic compounds, specifically a preparation method and application of a novel fluorescent macrocyclic compound. The preparation method synthesizes a dialdehyde-substituted intermediate through a Suzuki coupling reaction; the obtained intermediate is reduced to benzyl alcohol and then converted into benzyl chloride; benzyl chloride and 1,4-bis(bromomethyl)benzene are subjected to a Friedel-Crafts reaction to obtain a monomer; under the catalysis of boron trifluoride diethyl ether, the monomer is cyclized to obtain a bromine-chain-substituted macrocyclic compound; the bromine-chain-substituted macrocyclic compound reacts with trimethylamine in ethanol to obtain a water-soluble fluorescent macrocyclic compound. By designing and synthesizing the novel fluorescent macrocyclic compound, the present invention can generate singlet oxygen in vitro, effectively encapsulate antibacterial drugs, and perform bacterial imaging at the same time. Through the synergistic effect, the macrocyclic compound enhances the efficacy of antibacterial drugs, overcomes the problems of drug resistance and reduced drug efficacy of traditional antibacterial agents, and provides a new strategy for antibacterial treatment.

The invention discloses a water-soluble fluorescent conjugated polyelectrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out Suzuki coupling reaction or Sonogashira coupling reaction polymerization on the synthesized 3, 6-diborate carbazole or 3, 6-diethynyl carbazole monomer, and then carrying out quaternization reaction to obtain the conjugated polyelectrolyte. The 3, 6-substituted carbazole is introduced into a polymer main chain to form a non-rigid structure, so that the solubility of the polymer in a solvent is improved, and the blue fluorescence quantum yield is increased; meanwhile, the trimethylamine quaternary ammonium salt side group not only enhances the water solubility, but also is used as a molecular recognition site to be combined with negative charges of heparin through electrostatic interaction; a fluorescent sensing system is formed after the conjugated polyelectrolyte is dissolved in a buffer solution, and the fluorescence intensity of the fluorescent sensing system is remarkably quenched and responded along with increase of the heparin concentration. The heparin quantification range can be flexibly adjusted by adjusting the concentration of the conjugated polyelectrolyte; the method is suitable for detection of common heparin and low-molecular-weight heparin and analysis of heparin in complex samples.

The invention discloses a preparation method of electronic-grade tris (hydroxymethyl) aminomethane, which comprises the following steps: tris (hydroxymethyl) aminomethane is prepared into an aqueous solution, the aqueous solution passes through a chromatographic column, the filler of the chromatographic column is chelate resin or cation exchange resin, and the chelate resin or cation exchange resin is subjected to transformation pretreatment by using ammonia water before being filled; the obtained tris (hydroxymethyl) aminomethane solution is subjected to circulating filtration through a three-stage membrane module filtration system; adding a chelating agent to carry out chelating concentration treatment, and then concentrating to remove part of water; carrying out gradient cooling crystallization on the sample; and sequentially centrifuging and drying the cooled and crystallized trihydroxymethyl aminomethane solution to obtain the electronic-grade trihydroxymethyl aminomethane. The metal ion content of the finally obtained trihydroxymethyl aminomethane is 10 ppb or below, after further treatment, the metal ion content can be controlled to 1 ppb or below, operation is easy, and industrial production is facilitated.

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.

The application provides a kind of lure bait and its preparation method, the lure bait is prepared from the following components by weight parts: wheat flour 5-15 parts, pig blood 1-5 parts, powder 1-2 parts, sugar 10-20 parts, trimethylamine oxide 0.5-2 parts, fishy powder 0.5-1 part, and water in appropriate amount; the powder is konjac flour and / or pea powder.The specific preparation method is as follows: first, bake the wheat flour to full ripeness, add pig blood and stir to obtain mixture I; then, add water to the konjac flour and stir to a viscous state, add mixture I and heat to stir to obtain mixture II; after adding sugar to mixture II until the sugar is completely dissolved, add trimethylamine oxide and fishy powder and stir to obtain mixture III; finally, place mixture III into a mold, heat and shape to obtain the lure bait.The lure bait prepared by the application has the advantages of easy-to-obtain raw materials, simple preparation method, deep red color, fishy smell, shiny surface, slow dissolution in water, and can attract fish well and hook fish.

The invention relates to the technical field of road technical materials, in particular to an asphalt modifier, environment-friendly plastomer modified asphalt and a preparation method of the environment-friendly plastomer modified asphalt. The asphalt modifier is prepared from 25 to 30 parts of polyhydroxyalkanoate, 5 to 10 parts of bagasse fiber, 1 to 4 parts of trimethylamine ethyl piperazine, 1 to 3 parts of 5-hydroxymethylfurfural, 1 to 3 parts of p-toluenesulfonic acid, 0.3 to 0.8 part of aluminum hydroxide, 0.1 to 0.5 part of a dispersing agent, 0.5 to 1.0 part of an anti-aging agent, 0.8 to 1.0 part of an environment-friendly plasticizer and 0.2 to 0.5 part of an antioxidant. Compared with the prior art, maleic anhydride and treated bagasse form bagasse fibers containing carboxyl groups under the action of benzoyl peroxide, non-polar chain segments are introduced, the dispersity of the bagasse fibers is improved, the bagasse fibers, polyhydroxyalkanoate, trimethylamine ethyl piperazine and other components are used for preparing the asphalt modifier to prepare the modified asphalt, and the modified asphalt has the advantages of being environmentally friendly, free of toxic and side effects and the like. The Marshall stability and the splitting strength of the mixture are enhanced.

The present invention belongs to the technical field of nanomaterial sensors, and specifically relates to a WO3 / MXene nanocomposite film and sensor, as well as a preparation method and application thereof. The WO3 is a nano-granular structure, and the MXene is a multi-layer nano-sheet structure. The WO3 nanoparticles are uniformly adhered to the interlayers or surfaces of the multi-layer MXene nanosheets, so that there are gaps between the multi-layer MXene nanosheets, providing abundant reaction sites for gas adsorption. Preparation method: synthesis of WO3 nanoparticles; synthesis of multi-layer MXene nanosheets; synthesis of WO3 / MXene composite materials. The sensor is a solution of the WO3 / MXene composite material coated on a printed interdigitated electrode to form a uniform gas-sensitive film. The sensor is applied to a wireless non-contact trimethylamine (TMA) detection device. The present invention is used to detect TMA at room temperature, and has the advantages of fast response / recovery time, good stability and selectivity, and wireless non-contact detection.

Salmon meat is prone to spoilage during transportation and storage due to its rich protein and fatty acid content. During the spoilage process, the released volatile organic compounds (VOCs) can vary greatly, mainly including trimethylamine (TMA), dimethylamine (DMA), formaldehyde (HCHO), and ammonia (NH3). In this study, an array of quartz crystal microbalance (QCM) gas sensors was established, which was modified with graphene oxide (GO), Mxenes (Ti3C2T X ), hydroxylated multi-walled carbon nanotubes (MWCNTs), and graphdiyne oxide (GO P ), respectively, to detect TMA, DMA, HCHO, and NH3 in salmon meat, respectively. The results showed that the four kinds of sensor materials modified QCM sensors had good sensitivity, selectivity and repeatability for the corresponding target gas. Finally, the freshness of salmon meat was detected using the sensor array. The sensor response data was visualized by principal component analysis (PCA), and the first two principal components (PCs) explained 98.8% of the total contribution variance. A further discriminant model was established using quadratic support vector machine (QSVM), and the classification result was 100%. To further describe, the detection results were compared with the total volatile base nitrogen (TVB-N) content to judge the freshness of salmon meat.

The application discloses a long-acting deodorization type biodegradable polymer fiber and a preparation method thereof. The method takes biodegradable material as a matrix, and composites a pore-forming agent and a multifunctional deodorant as functional components. Uniform spinning liquid is prepared through in-kettle constant-temperature stirring dissolution, filtration and defoaming. The spinning liquid is formed into a product fiber through double-component synergistic coagulation bath wet spinning, gradient heat drawing, high-temperature setting, oily functional coating finishing and segmented drying. The preparation process of the application is mild, and can avoid high-temperature inactivation of the functional components. The fiber fineness is adjustable, the breaking strength is high, the deodorization rate of hydrogen sulfide, methyl mercaptan and trimethylamine, three kinds of odor gases, is greater than or equal to 96%, the ammonia gas adsorption rate is greater than or equal to 92%, the fiber is resistant to washing and rubbing, and the biodegradation rate is greater than or equal to 65%. The fiber can be widely applied to high-end garments, home textiles, medical health, air purification and other fields, and the process has strong controllability and is easy to be industrialized and mass-produced.

This invention relates to the field of water pollution control and treatment technology, and in particular to an aeration treatment device for wastewater in a trimethylamine purification process. The device includes a gas collection hood, a guide tube, an air distribution plate, and aeration pipes. The lower part of the gas collection hood has a slot connecting to its interior. The guide tube has a vertical axis, is open at both ends, and there are multiple guide tubes spaced apart along the length of the gas collection hood. This invention incorporates an air distribution plate and aeration pipes. By causing the air distribution plate to drive the multiple aeration pipes, which are circumferentially spaced, to reciprocate within a preset angle range, a non-steady, reciprocating sweeping flow field can be generated. This more effectively disrupts the flow pattern, preventing pollutants in the wastewater from accumulating in a specific direction. Furthermore, at the moment of oscillation and reversal, the water flow direction and the bubble ejection direction change abruptly, generating a stronger instantaneous shear force, similar to a "back-and-forth brushing" action, resulting in a more significant removal effect on impurities on the membrane fiber surface.

The present invention relates to a trimethylammonium methanesulfonate second-order nonlinear optical crystal material and its preparation and application. The chemical formula of the crystal material is [(CH3)3NH] + [SO3CH3] ‑ , molecular weight is 154.21, belongs to the orthorhombic system, space group is Pca21 (No.29). The unit cell parameters are α=γ=β=90°, Z=4, and the unit cell volume is the nonlinear optical crystal [(CH3)3NH] + [SO3CH3] ‑ Under 1064nm laser irradiation, the powder's frequency-doubled effect is approximately 0.5 times that of potassium dihydrogen phosphate crystals, and phase matching is achieved, with a UV absorption cutoff edge less than 200nm. This crystal material is easy to grow and exhibits significant application value in electro-optical modulation, holographic storage elements, and frequency-doubled devices.

An absorbent article (1) is provided with a surface sheet (2), an absorbent body (4) containing a water-absorbent polymer, and an activated carbon member (5) containing activated carbon particles disposed apart from the absorbent body (4). A water-absorbing polymer contained in an absorber (4) and an activated carbon member (5) are disposed so as to satisfy the conditions represented by formula (1) in a deodorization function test in which the activated carbon member (5) is disposed in a closed space. A first odor component amount, which is the amount of an odor component including a basic odor caused by ammonia or trimethylamine and an acidic odor caused by methyl mercaptan, in the sealed space after three hours in a state in which urine is to be absorbed by the absorbent article (1), is measured. And a second odor component amount, which is the amount of an odor component in the closed space after three hours in a state in which urine is left to be absorbed by the absorbent article (1), is measured, and the first odor component amount / the second odor component amount is less than or equal to 0.07 (1).

The invention relates to the technical field of tail gas treatment of neopentyl glycol devices, and particularly discloses a method for treating waste gas by using a neopentyl glycol device, which comprises the following steps of: conveying tail gas WG1 of an aldehyde recovery tower, vacuum tail gas WG2 and tail gas WG3 of a trimethylamine storage tank into a washing tower together for washing, tower bottoms are introduced into a lower packing layer, a washing solution L1 is introduced into a middle packing layer, a washing solution L2 is introduced into a top packing layer, aldehyde recovery tower tail gas WG1, vacuum tail gas WG2 and trimethylamine storage tank tail gas WG3 entering the washing tower escape upwards from the bottom of the washing tower, and in the escape process, waste gas is washed by the tower bottoms, the washing solution L1 and the washing solution L2 on the three packing layers respectively; by adopting a solvent washing and spraying method, the treatment efficiency of the tail gas of the aldehyde recovery tower, the vacuum tail gas and the tail gas of the trimethylamine storage tank can be improved, and normal operation of a neopentyl glycol device is guaranteed.

The invention discloses a novel process for removing fishy smell and moisture of natural pigment cuttlefish ink, which comprises the following steps of: performing enzymolysis and fishy smell removal by using double enzymes, and converting fishy smell substances into odorless components in situ through the synergistic effect of protease and trimethylamine oxidase; ultrasonic-assisted three-stage membrane separation is combined with a magnetic nanoparticle self-cleaning system, so that efficient and continuous separation is realized; sodium alginate-calcium ions are subjected to crosslinking concentration, a bionic microcapsule barrier is constructed, and the pigment stability and moisture resistance are synchronously improved; and pre-cooling step vacuum freeze-drying is carried out, and a melanin structure is protected through a temperature control program. The obtained cuttlefish ink product is relatively low in content of residual trimethylamine, relatively high in melanin retention rate, relatively weak in 450nm absorbance attenuation and relatively small in moisture content fluctuation in a 30-day humid and hot environment. The invention solves the problems of incomplete deodorization, easy degradation of pigment, serious membrane pollution and the like in the traditional process, and has high efficiency and environmental protection property.

The invention discloses an SIS soap-free emulsion as well as a preparation method and application thereof, and belongs to the field of preparation of high polymer material latex films. The SIS soap-free emulsion is prepared from an SIS ionomer and water; the SIS ionomer is provided with a lateral carboxylate group or a lateral carboxylic ammonium salt group; the lateral carboxylate group is selected from at least one of sodium carboxylate, potassium carboxylate, lithium carboxylate, calcium carboxylate and magnesium carboxylate; the lateral carboxylic acid ammonium salt group is selected from at least one of triethanolamine maleate, triethylamine maleate, trimethylamine maleate, triethylamine maleate and isopropyl amine maleate. No emulsifier needs to be added in the whole preparation process, the complex cleaning process of emulsifier residues is avoided, and generation of emulsifier wastewater is effectively reduced. Compared with natural rubber gloves and nitrile rubber gloves, the prepared SIS latex gloves are more comfortable to wear, wider in application and higher in adaptability.

The invention relates to the technical field of foul smell treatment in livestock and poultry breeding, in particular to a compound livestock and poultry manure deodorant as well as a preparation method and application thereof. The deodorant comprises a compound microorganism culture solution, a plant compound extracting solution and a chemical absorbent, the compound microorganism culture solution comprises a culture solution of sulfur oxidizing bacteria, a culture solution of dimethyl sulfide degrading bacteria, a culture solution of trimethylamine degrading bacteria and a culture solution of ammonia oxidizing bacteria; the plant composite extracting solution comprises a plant extracting solution and a surfactant; the raw materials of the plant extracting solution are selected from one or more of honeysuckle, raspberry and clove; the chemical absorbent comprises zinc diricinoleate. The composite livestock and poultry manure deodorant provided by the invention is simple in process and relatively low in cost, has the characteristics of fast deodorization effect and lasting effect, and is suitable for popularization and application in production practice.

The application discloses a preparation method and application of a surface grafted biomimetic zwitterionic anti-fouling polyamide membrane and belongs to the membrane technical field. The preparation steps of the anti-fouling polyamide membrane comprise the following steps: modifying the polyamide membrane by using a silane coupling agent containing an unsaturated double bond, dropping a solution containing a hydrophobic initiator on the surface of the modified polyamide membrane, dropping an oxidized trimethylamine monomer solution after the solvent on the surface of the polyamide membrane is volatilized, and preparing the anti-fouling polyamide membrane through ultraviolet irradiation. The super-wetting assisted grafting technology is adopted, that is, a super-wetting stable initiator layer is formed on the membrane surface, the interface reaction between the zwitterionic monomer and the membrane surface is promoted, and then a controllable grafting is formed between the zwitterionic monomer and the membrane surface. The anti-protein performance of the novel zwitterionic anti-fouling polyamide membrane in the application is far better than that of a traditional zwitterionic anti-fouling polyamide membrane, and the grafting density is adjustable, so that the water production flux of the nanofiltration membrane can be ensured while the anti-fouling is guaranteed, and the shortcomings of the flux reduction and the insufficient anti-fouling performance caused by the traditional grafting method and the traditional zwitterionic anti-fouling polyamide membrane are overcome.

The invention provides a photosensitizer based on a film-embedded conjugated oligomeric electrolyte as well as a preparation method and application of the photosensitizer. A preparation method of the photosensitizer comprises the following steps: stirring and reacting a compound Br-DC6 and a compound A in THF under a dark condition, removing THF after the reaction is completed, stirring and reacting the obtained product and the compound A in methanol under a dark condition, and removing methanol after the reaction is completed, thereby obtaining the photosensitizer based on the film-embedded conjugated oligomeric electrolyte. The photosensitizer based on the film-embedded conjugated oligomeric electrolyte is obtained; wherein the compound A is trimethylamine or 1, 2-dimethylimidazole; the structural formula of the compound Br-DC6 is shown in the specification. The photosensitizer can efficiently generate ROS and singlet oxygen under illumination, the antibacterial effect is excellent, and the problems that an existing MICOEs photosensitizer is low in ROS yield, poor in film embedding efficiency under physiological conditions and the like can be solved.

The invention relates to the technical field of atmospheric pollution control in environmental chemical industry, and discloses a spherical copper-cerium bimetallic catalyst as well as a preparation method and application thereof. The preparation method of the spherical copper-cerium bimetallic catalyst comprises the following steps: dissolving cerium nitrate hexahydrate with water to obtain a cerium nitrate solution, adding a mixed solution composed of ethylene glycol and glacial acetic acid into the cerium nitrate solution, uniformly mixing, carrying out a hydrothermal reaction, collecting a precipitate after the reaction is finished, and centrifuging, washing, drying and calcining the precipitate to obtain spherical cerium oxide; the preparation method comprises the following steps: adding spherical cerium oxide into a copper nitrate solution, uniformly stirring, carrying out ultrasonic treatment, drying and calcining to obtain a spherical copper-cerium bimetallic catalyst, and catalytically removing trimethylamine by the spherical copper-cerium bimetallic catalyst at low temperature in a nitrogen atmosphere containing trimethylamine and oxygen. And the spherical copper-cerium bimetallic catalyst does not have an obvious inactivation phenomenon when the degradation reaction of the spherical copper-cerium bimetallic catalyst on trimethylamine is performed for 88 hours, and the spherical copper-cerium bimetallic catalyst has excellent nitrogen and carbon dioxide selectivity.

This invention provides a novel method for producing high-purity trimeciate trichloride, which can be obtained with volumetric efficiency and in good yield. [Solution] A method for producing trimeciate trichloride, comprising the steps of (I) reacting trimesic acid with the following compound (B) in the presence of at least one catalyst, iron(III) chloride, zinc oxide, and zinc chloride, and (II) separating the reaction product obtained in step (I) by distillation. Compound (B): 1,3-bis(trichloromethyl)benzene or 1,4-bis(trichloromethyl)benzene

The application discloses a cationic modified rosin anion rosin size with charge reversal stability and a preparation method and application thereof, and belongs to the technical field of anion rosin size. The rosin size is composed of the following raw materials in parts by mass: rosin 100-200 parts; epichlorohydrin 30-90 parts; trimethylamine 3-7 parts; tetrabutylammonium bromide 0.5-1 part; anion starch emulsifier 5-8 parts, sodium dioctyl sulfosuccinate 5-8 parts; defoaming agent 0.5-2 parts; and water 100-240 parts; wherein the anion starch emulsifier is prepared by reacting cassava starch and sodium chloroacetate under alkaline conditions. The modified rosin liquid and the anion emulsifier are emulsified by using a high-temperature normal-pressure phase inversion method to prepare the cationic modified rosin anion rosin size based on the charge reversal stability, and the cationic modified rosin anion rosin size has the characteristics of no chloropropanol, no organic chlorine and good stability, and can realize acid to neutral sizing.

The invention relates to application of a coating premix in tamsulosin hydrochloride sustained-release tablets and the tamsulosin hydrochloride sustained-release tablets. The coating premix is prepared from the following components in parts by weight: 40 to 60 parts of eudragit RS100, 20 to 30 parts of eudragit RL100, 10 to 15 parts of plasticizer, 15 to 20 parts of coloring agent, 15 to 20 parts of anti-sticking agent and 500 to 600 parts of solvent; the eudragit RS100 comprises ethyl acrylate, methyl methacrylate and methacrylic acid chlorinated trimethylamino ethyl ester, and the eudragit RL100 comprises ethyl acrylate, methyl methacrylate and methacrylic acid chlorinated trimethylamino ethyl ester; through application of the coating premix in the tamsulosin hydrochloride sustained-release tablet, the problems that the existing tamsulosin hydrochloride sustained-release tablet cannot be dissolved in the intestinal tract and the bioavailability of the medicine cannot be ensured are solved.

The invention discloses efficient vaporization equipment for TMA recovery, and relates to the technical field of TMA recovery. Comprising a main body assembly and a top cover assembly, the main body assembly comprises a main cylinder, the top cover assembly comprises a top cover body, a carrier assembly used for absorbing waste water and heating the waste water is arranged on the top cover body, and a shaking assembly used for driving the carrier assembly to vibrate and a storage assembly used for recycling impurities are arranged in the main cylinder. According to the invention, trimethylamine is vaporized into a gas state preferentially in a manner of heating waste water, so that the trimethylamine is recovered, the heating carrier further heats the water absorption carrier, residual impurities in the water absorption carrier are crystallized, and the rotating shaft continuously drives the water absorption carrier and the heating carrier to rotate, so that the water absorption carrier and the heating carrier are continuously heated. The water absorption carrier and the heating carrier are in contact with the shaking assembly, so that the whole carrier frame shakes up and down, crystallized impurities are shaken off, the content of the impurities in sewage at the bottom of the main cylinder is reduced, and the recovery efficiency of trimethylamine is improved.

This invention relates to a bio-induced penetrating crystallizing waterproof coating for marine environments and its preparation method. The waterproof coating is made from the following raw materials in parts by weight: 40-50 parts silane impregnating agent; 10-15 parts glycerol; 2-6 parts artificial inducing agent; 5-8 parts bio-calcium powder inducing agent; 3-5 parts pigment inducing agent; and 2-4 parts crystallizing precipitant. The artificial inducing agent is composed of norepinephrine and trimethylamine in a 1:1 mass ratio. The bio-induced penetrating crystallizing waterproof coating provided by this invention is an environmentally friendly coating with high-efficiency anti-corrosion and self-healing functions. Furthermore, it can utilize the aggregation effect of marine shellfish to further increase the corrosion resistance of the underlying concrete.