70 results about "Alkyl bromide" patented technology

The invention belongs to the technical field of oilfield development, and relates to an oilfield high-temperature-resistant discharge aiding agent and a synthesis method and application thereof. The preparation method comprises the following steps: sequentially adding diaza 18-crown ether-6, ethanol and benzaldehyde-2, 4-sodium disulfonate into a reactor, stirring and dissolving, continuously adding sodium cyanoborohydride, stirring and dissolving, adjusting the pH value to 3-4 by using hydrochloric acid, heating at 70-80 DEG C, and keeping the temperature to react for 2-4 hours; cooling to below 20 DEG C, slowly dropwise adding hydrochloric acid, adjusting the pH value to 0-1, stirring for 20-30 minutes, and destroying the residual sodium cyanoborohydride; adjusting the pH value to 9-10 by using sodium hydroxide, adding dodecyl bromide, and heating and refluxing for 24-48 hours; and carrying out reduced pressure distillation to obtain a viscous solid, recrystallizing, and drying to obtain the product high-temperature discharge aiding agent. The high-temperature-resistant discharge aiding agent has the advantages of low surface tension, low interfacial tension, low critical micelle concentration and high flowback rate.

The invention relates to the technical field of material preparation, and particularly discloses a functionalized NH2-MIL-125 (Ti)-based material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, under the action of an organic base catalyst, grafting an imidazole group to an amino group of NH2-MIL-125 (Ti) to obtain imidazole grafted NH2-MIL-125 (Ti); then, the imidazole modified NH2-MIL-125 (Ti) material and alkyl bromide are subjected to a coordination reaction, and the functionalized NH2-MIL-125 (Ti)-based material is obtained. The functionalized NH2-MIL-125 (Ti)-based material provided by the invention has the advantages of high adsorption capacity, high selectivity, high adsorption rate, high reduction efficiency, stable structure and the like in the aspect of adsorbing and reducing the noble metal, and a very potential solution is provided for recycling and reusing the noble metal.

The invention relates to the technical field of high polymer materials, and discloses an antibacterial modified nano SiO2 grafted polystyrene composite material, styrene and an allyl amide imidazole monomer are used as polymerization monomers, imidazole-based polystyrene with a molecular side chain containing an imidazole functional group is obtained through polymerization, bromine atoms and tertiary amine of imidazole are subjected to a quaternization reaction, and the antibacterial modified nano SiO2 grafted polystyrene composite material is obtained. According to the preparation method, alkyl bromide modified SiO2 and imidazolyl polystyrene are subjected to quaternization reaction, so that long-chain alkyl imidazole quaternary ammonium salt is generated between the alkyl bromide modified SiO2 and imidazolyl polystyrene, polystyrene and nano SiO2 are organically combined through imidazole quaternary ammonium salt ionic bonds, the compatibility between polystyrene and nano SiO2 is improved, the problem of agglomeration of nano SiO2 is effectively solved, and the reinforcing effect of nano SiO2 can be better exerted; and the long-chain alkyl imidazole quaternary ammonium salt between the nano SiO2 and the polystyrene has excellent antibacterial property, so that the polystyrene material is endowed with excellent antibacterial property.

The application discloses a kind of using cobalt catalyst by unreported double migration coupling strategy, realizes migration asymmetric nitrogen hetero Nozaki-Hiyama-Kishi (aza-NHK) reaction, and the selective preparation α-chiral (E)-allyl amine starting from simple and easy to obtain ortho halogen phenyl ethylene or corresponding E / Z-alkyl bromide or its mixture belongs to the field of organic chemistry and medicinal chemistry.The application under the action of metal cobalt source, ligand, organic additive, inorganic additive etc., makes cyclic sulfonamide and ortho alkenyl substituted aryl halide or alkenyl halide react in organic solvent, to obtain a series of polysubstituted olefins with excellent regioselectivity, stereoselectivity and good yield, which can be used as active drug molecules and important synthetic intermediates.The application uses cheap transition metal cobalt as catalyst, and uses ortho alkenyl substituted aryl iodine and cyclic sulfonamide as raw material, and the reaction condition is warm, simple operation, and good functional group compatibility.

The invention relates to the field of oilfield chemistry, and relates to a composite clean fracturing fluid for compact oil and gas reservoir fracturing and a fracture water plugging method. The composite clean fracturing fluid is prepared by compounding the following components in percentage by weight: 0.005 to 0.03 percent of nano particles, 0.5 to 3 percent of a viscoelastic surfactant, 0.5 to 2 percent of sodium p-toluenesulfonate and 94.97 to 98.995 percent of water. Wherein the nano particles are hydrophobic fluorine modified nano silicon dioxide, and the viscoelastic surfactant is octadecyl dimethyl hydroxypropyl ammonium bromide synthesized by N, N-dimethyl propanolamine and long-chain alkyl bromide. The composite clean fracturing fluid injection process is used for compact oil and gas reservoirs. The composite clean fracturing fluid has dual effects of fracturing and filtration loss reduction, and has higher shear resistance and viscoelasticity, and the used nanoparticles are prepared by a simple process, so that the composite clean fracturing fluid is beneficial to industrial popularization.

The invention relates to the technical field of flotation, in particular to a preparation process of a lepidolite ore flotation reagent, which comprises the following steps: reacting epoxidized soybean oil with N-methyltaurine, and reacting with alkyl bromide to obtain the lepidolite ore flotation reagent. The lepidolite ore flotation reagent contains a large amount of hydroxyl, quaternary ammonium salt cations and sulfonate anions, a unique betaine zwitterionic group is formed, the betaine zwitterionic group and the surface of the lepidolite ore have stronger hydrogen bond, static electricity and other adsorption effects, the flotation reagent is tightly and firmly adsorbed on the surface of the lepidolite ore, and the flotation efficiency is improved. And meanwhile, the flotation agent contains hydrophobic soybean oil molecular chains, so that the lepidolite ore has better hydrophobic flotation performance, and the recovery rate of the lepidolite ore is remarkably increased.

The invention discloses a preparation method and application of a catalyst for synthesizing 6-aminocapronitrile, and belongs to the field of catalysis. Comprising the following steps: mixing a carrier with an alkyl ammonium bromide solution, carrying out hydrothermal modification, drying I and roasting to obtain a modified carrier; mixing an active component precursor solution with the modified carrier, dipping, and drying II to obtain a catalyst precursor; and carrying out water vapor treatment on the catalyst precursor to prepare the catalyst for synthesizing 6-aminocapronitrile. The preparation method has the advantages of simple preparation process, low cost and easiness in large-scale production.

The invention discloses a hydroxy sulfobetaine gemini surfactant, which is simply recorded as DTH-n, the synthesis method comprises the following steps: (1) adding N, N-dimethylethylenediamine and alkyl bromide (carbon chain lengths are respectively 10, 12, 14 and 16) into a reaction container, carrying out reflux stirring at 70 DEG C for 16-20 hours by taking absolute ethyl alcohol as a solvent and KOH as an alkaline agent, carrying out suction filtration, carrying out rotary evaporation on filtrate to remove the solvent, dissolving a product into n-hexane, adding concentrated hydrochloric acid, stirring to separate out a white solid, carrying out suction filtration to obtain a solid gemini alkyl tertiary amine acidified substance, and drying the solid gemini alkyl tertiary amine acidified substance; dissolving the solid acidified substance in absolute ethyl alcohol, carrying out liquid separation, taking a lower-layer solution, and adding solid KOH to reduce the gemini alkyl tertiary amine acidified substance into an intermediate product gemini alkyl tertiary amine under the protection condition of normal hexane; and (2) adding the product, 3-chloro-2-hydroxypropane sodium sulfonate and an isopropanol aqueous solution as a solvent and sodium carbonate as an alkaline agent into a reaction container to maintain the pH value of the reaction solution at 8-10, carrying out reflux reaction at 90 DEG C for 48 hours, separating liquid, taking a lower-layer solution, evaporating in a vacuum oven to remove the solvent, dissolving residues in a 70% ethanol solution, carrying out suction filtration, standing the filtrate at 0 DEG C for 12 hours, separating out a viscous oil substance, and drying to obtain the product. Separating liquid, re-precipitating and purifying, evaporating in a vacuum oven to remove the solvent, and grinding to obtain a faint yellow powdery solid. According to the invention, a two-step method is adopted, the reaction steps are few, the operation is simple, the product is easy to separate and purify, and the surface activity and foam performance are excellent.

The present invention belongs to the field of tertiary oil recovery technology, and in particular to a zwitterionic drainage agent and a synthesis method thereof. The synthesis method is as follows: N-(2-aminoethyl)morpholine, ethanol, and benzyl chloride are sequentially added to a four-necked flask, the pH value is adjusted with a sodium hydroxide solution, heated, kept warm, and the pH is maintained to be not less than 8; sodium chlorosulfonate is added, heated to reflux, and the pH is maintained to be not less than 8; vacuum distillation, heating to dissolve, adjusting the pH value, extraction, and liquid separation are performed; the extract is transferred to a four-necked flask, dodecyl bromide and solid potassium carbonate are added, refluxed, filtered, the filtrate is cooled, a solid is precipitated, and dried overnight to obtain a product drainage agent. The present invention has the advantages of simple synthesis process, low surface interfacial tension, low critical micelle concentration, and high drainage rate.

The present invention belongs to the field of organic synthesis, and in particular to the field of organic drug synthesis technology, and more specifically to a method for preparing an azvudine intermediate by using a microchannel reactor, wherein a new synthesis route is provided, that is, compound III is used as a raw material, reacted with alkyl bromide or alkyl iodide to obtain compound II; and then reacted with acyl fluoride using a continuous flow microchannel reactor to obtain a target product compound I, thereby realizing the application of a microchannel reactor in the preparation of an azvudine intermediate. By performing a continuous flow type reaction in a microchannel reactor, the reaction time and reaction temperature can be accurately controlled, and the problems of long reaction time, many by-products, excessively high reaction temperature, high equipment requirements, low yield and purity, etc. in each reaction step in the prior art are effectively solved.

The invention discloses a porphyrin dication covalent metal organic framework material as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The porphyrin dication covalent metal organic framework material is obtained by copolymerization of porphyrin with methyl, a bipyridine ruthenium (II) complex with aldehyde group and alkyl ammonium bromide. The porphyrin with methyl is tetra (6-methylpyridine-3-yl) porphyrin; the dipyridyl ruthenium (II) complex with the aldehyde group is tris (4, 4 '-dicarboxyaldehyde-2, 2'-dipyridyl) ruthenium (II); the alkyl ammonium bromide is 2-bromoethyl trimethyl ammonium bromide. According to the invention, the CRuP-COF is prepared by utilizing a Knoevenagel condensation reaction and an SN2 nucleophilic substitution reaction through a one-pot method. The CRuP-COF can be used as an intelligent therapeutic agent and can be used as a trinity intelligent treatment platform, photo-thermal / photodynamic / cation cascade collaborative treatment is realized, and healing of open bacterial infected wounds is remarkably accelerated.

The application belongs to the technical field of organic synthesis, and particularly relates to a benzimidazole alkyl bromide salt-anemarrhena saponin aglycone derivative, a preparation method and application thereof. The benzimidazole alkyl bromide salt-anemarrhena saponin aglycone derivative provided by the application has a structure shown in formula 1 or formula 2. The application combines an anemarrhena saponin aglycone skeleton and a benzimidazole skeleton, and the obtained benzimidazole alkyl bromide salt-anemarrhena saponin aglycone derivative with the structure shown in formula 1 or formula 2 has significant antitumor activity. The antitumor growth inhibition activity of the benzimidazole alkyl bromide salt-anemarrhena saponin aglycone derivative provided by the application is better than that of cisplatin (DDP), an anticancer drug.

The application provides a hydrophobic associating polymer and a preparation method thereof, and a polymer reinforced foam system, the hydrophobic associating polymer is copolymerized by a hydrophobic monomer and acrylamide and sodium acrylate; wherein the hydrophobic monomer is obtained by quaternary ammonium reaction of methacrylamidopropyl dimethyl amine and alkyl bromide with a molar ratio of 1:1-1.15. The foam system of the application has good foaming property and foam stability under strong oil wet conditions.

The invention belongs to the field of photovoltaic materials. The invention relates to a macromolecular light conversion agent and a preparation method thereof, and a photovoltaic packaging light conversion adhesive film, the preparation method of the macromolecular light conversion agent comprises the following steps: carrying out substitution reaction on benzotriazole and liquid bromine to obtain an intermediate product I; carrying out substitution reaction on the intermediate product I and bromo-ester to obtain an intermediate product II; carrying out coupling reaction on the intermediate product II and a vinyl phenylboronic acid derivative to obtain an intermediate product III; carrying out substitution reaction on bromofluorene and alkyl bromide to obtain an intermediate product IV; carrying out coupling reaction on the intermediate product IV and a vinyl phenylboronic acid derivative to obtain an intermediate product V; and carrying out free radical polymerization reaction on the intermediate product III and the intermediate product V to obtain the macromolecular light conversion agent. Through the self-made macromolecular light conversion agent, the problems of narrow and single absorption peak, low light utilization rate, poor stability, easiness in precipitation and the like of the conventional organic light conversion agent benzotriazole for the photovoltaic plugging eye gel film are effectively solved.

The invention discloses a method for preparing a star-shaped block copolymer based on a light-operated in-situ bromine-iodine conversion reversible-inactivation free radical polymerization method, which comprises the following steps: mixing and dissolving MMA (methyl methacrylate), an alkyl bromide initiator, iodide and an amine catalyst, and carrying out BIT-RDRP reaction under the irradiation of blue light to obtain a star-shaped homopolymer; and mixing and dissolving PEGMA300, iodide and an amine catalyst, mixing with the star-shaped homopolymer, and carrying out a BIT-RDRP reaction under the irradiation of blue light to obtain the amphiphilic star-shaped block copolymer. According to the invention, a BIT-RDRP reaction is adopted, and the BIT-RDRP reaction is introduced into a continuous flow microtube reactor to prepare an amphiphilic star-shaped block copolymer with a controllable block ratio; the method is mild in condition, simple in component, high in efficiency and capable of realizing continuous preparation, and a simple and efficient method is provided for controllable large-scale preparation of the star-shaped block copolymer.

The invention belongs to the field of organic synthesis. The method comprises the following steps: mixing 1, 2-cyclohexane dicarboxylic acid anhydride, alkyl bromide and an organic solvent (N, N-dimethylacetamide) under the action of a transition metal catalyst bis ((1, 5-cyclooctadiene) nickel), a reducing agent (zinc powder) and a nitrogen ligand (2, 2 '-bipyridine ligand), and carrying out electrophilic reduction cross-coupling reaction to synthesize the gamma-alkyl ketonic acid compound. The cheap nickel is used as the metal catalyst, the use of an organic metal catalyst is avoided, the synthesis method is simple, the synthesis steps are few, the operation is convenient, the application range is wide, and various gamma-alkyl ketonic acid compounds can be synthesized.

This culture medium is for multiplying blood cells capable of dividing, and contains a compound (I) represented by a formula or a physiologically acceptable salt thereof. Formula (I). In the formula, R1, R2 and R3 are each H, a linear or branched C1-C4alkyl, bromine, or iodine; R4 is a linear or branched C1-C4 alkyl, bromine or iodine; R5 is oxygen, methylene or a direct bond; R6 is hydrogen or-NH2; and R7 is hydrogen or -COOH. Note that R6 and R7 are not simultaneously hydrogen.

The present invention belongs to the technical field of photocatalysts, and discloses a Cu 1.95 S 1‑x photocatalyst with surface Cu and S dual defect sites, its preparation method and application. By adding cetyltrimethylammonium bromide and hexamethylenetetramine to an ethylene glycol solution containing copper element, adding a certain amount of thioacetamide, stirring for a certain time at a certain temperature and then pouring it into a reaction kettle, and carrying out hydrothermal reaction at a certain temperature for a certain time, after washing and drying, a Cu 1.95 S 1‑x photocatalyst with surface Cu and S dual defect sites is obtained. The specific surface area of the photocatalyst prepared by the present invention is larger, and it has higher photocatalytic activity. In particular, the photocatalytic reduction activity of CO2 is enhanced, and the preparation method of the catalyst reduces the production cost and simplifies the production process. The prepared Cu 1.95 S 1‑x photocatalyst with surface Cu and S dual defect sites can photocatalytically reduce CO2 to CH4.

The invention belongs to the technical field of organic chemical synthesis, and discloses a synthesis method of an organosilicon compound. According to the invention, successful synthesis of the 1, 3-site double-silicon compound from acrylonitrile, chlorosilane and alkyl bromide at room temperature is realized for the first time, and the blank in the prior art is filled. The method provided by the invention has the advantages of mild process conditions, short flow, simple steps and wide substrate applicability, and meets industrial production requirements. Research finds that the yield of the product can reach 85%, and the generated alkyl silicon compound has wide application prospects in organic synthesis and drug research and development. Therefore, the method has important application value.

The invention provides a method for preparing 6-hydroxy-2H-pyran-3-ketone, which comprises the following steps: by taking meso-carboxyl phenyl porphyrin (H2TCPP) as a catalyst, oxygen (O2) as an oxidant, cetyl ammonium bromide (CTAB) and potassium phosphate (K3PO4) as auxiliaries and water as a reaction medium, carrying out catalytic oxidation reaction on furfuryl alcohol under natural sunlight for 1 hour, thereby preparing the 6-hydroxy-2H-pyran-3 (6H)-ketone (6-HPO). The 6-hydroxy-2H-pyran-3 (6H)-ketone is obtained through a one-step catalytic oxidation process under mild conditions, a cleaner and more economical catalytic process is achieved, the yield is as high as 98.94%, and the method is low in cost, few in by-product, environmentally friendly, high in atom economic efficiency and good in industrial application prospect.

The present invention provides a culture medium for amplifying hematopoietic cells having cell division ability, the culture medium containing a compound (I) represented by formula (1) or a physiologically acceptable salt thereof: in the formula (1), R1, R2, and R3 are each independently any one of hydrogen, a linear or branched C1-C4 alkyl group, bromine, and iodine, R4 is any one of a linear or branched C1-C4 alkyl group, bromine, and iodine, and R1, R2, and R3 are each independently any one of hydrogen, linear or branched C1-C4 alkyl groups, bromine, and iodine. R5 is any one of oxygen, methylene and a chemical bond, R6 is hydrogen or-NH2, R7 is hydrogen or-COOH, and R6 and R7 are not hydrogen at the same time.

The invention provides a metallic nickel suspension and a preparation method thereof, a coating and an adhesive tape, and relates to the technical field of nickel suspensions. The metal nickel suspension liquid is prepared from the following raw materials in parts by weight: 100 parts of acrylate, 8 to 20 parts of nickel powder, 0.5 to 1 part of carboxyl aromatic acid compound and 0.5 to 1 part of halogenated alkyl bromide. A carboxyl aromatic acid compound and halogenated alkyl bromide (organic halide) are subjected to an electrophilic cross-coupling reaction under the action of nickel to prepare amphoteric macromolecules, an electrophilic group extends to a metal nickel phase, an electron donating group extends to an acrylate solution, so that the surface tension of nickel powder is reduced, and meanwhile, different micelles are kept relatively stable and independent; and the nickel powder can be integrally dispersed to form fine particle liquid drops, so that the nickel powder is stably suspended in the acrylate solution.

The application discloses a kind of filter aids for reducing iron ore pulp moisture content and preparation method thereof, belong to filter aid technical field.The filter aid is with starch as matrix, cooperate bromoalkane, bromo quaternary ammonium salt and other raw materials, by pre-oxidation, alkaline activation, double bromination grafting and post-processing are obtained;Among them, bromoalkane is the normal monovalent alkyl bromide of carbon chain length 8-14, and bromo quaternary ammonium salt is 2-bromoethyl trimethyl ammonium bromide or 6-bromoethyl trimethyl ammonium bromide.The present application realizes the synchronous grafting of hydrophobic alkyl chain and cationic quaternary ammonium salt through covalent bond, which can not only destroy the mineral surface hydration film and convert attached water, but also flocculate fine particles and impurities, and optimize the pore structure of filter cake.The filter aid solves the defects of single function and poor synergy of traditional technology, significantly improves the filtration efficiency, reduces the moisture content of filter cake and the turbidity of filtrate, and the raw materials are environmentally friendly, the preparation process is simple, suitable for industrial production, and suitable for iron ore pulp solid-liquid separation filtering scene.

The invention belongs to the technical field of oil exploitation, and particularly relates to an oil and gas well annulus protection fluid and a preparation method and application thereof. The preparation method comprises the following steps: sequentially adding 3-(4-morpholinyl)-4-fluorobenzaldehyde, dimethyl pyridylamine, sodium cyanoborohydride and ethanol into a reactor, stirring for dissolving, adjusting the pH value to 3-4 by using hydrochloric acid, and heating for reflux reaction; adjusting the pH of the mixed solution to be 1t with sulfuric acid; the method comprises the following steps: 1, stirring for 0.5-1 hour, and quenching residual sodium cyanoborohydride; adjusting the pH value to 9-10 by using sodium hydroxide, adding dodecyl bromide, heating and refluxing; and carrying out reduced pressure distillation to obtain a viscous solid, and recrystallizing with ethyl acetate to obtain the main agent of the protection liquid. And uniformly mixing the protection liquid main agent, sodium formate, sodium amino trimethylene phosphonate and water to obtain the oil and gas well annulus protection liquid. The annulus protection liquid disclosed by the invention has good anti-corrosion and sterilizing effects.

The invention relates to a method for synergistically catalyzing a decarbonylation alkylation reaction of alkyl aldehyde through nickel electrochemistry, which comprises the following steps: in an inert solvent, under the action of a metal catalyst, a ligand, an electrode and an electrolyte, carrying out catalytic reaction on an aldehyde compound containing unsaturated alkyl and alkyl bromide to obtain an alkane compound. According to the present invention, the non-activated alkyl aldehyde is adopted as the alkylation reagent, the raw materials are easily available, the operation is simple, the condition is mild, the expensive active metal catalyst or additive is not required to participate in the reaction, the good atom economy is provided, the high value-added alkane compound is obtained under the cheap and easily available current condition, and the synthesis process is environmentally friendly.

The invention discloses a filter aid for reducing the water content of iron ore slurry and a preparation method of the filter aid, and belongs to the technical field of filter aids. The filter aid is prepared by taking starch as a matrix and cooperating with raw materials such as brominated alkane and brominated quaternary ammonium salt through pre-oxidation, alkaline activation, dibromo-grafting and post-treatment. Wherein the alkyl bromide is normal monoalkyl bromide with the carbon chain length of 8-14, and the brominated quaternary ammonium salt is 2-bromoethyl trimethyl ammonium bromide or 6-bromoethyl trimethyl ammonium bromide. Synchronous grafting of hydrophobic alkyl chains and cationic quaternary ammonium salt is achieved through covalent bonds, hydration membranes on the surfaces of minerals can be destroyed, attached water can be converted, fine particles and impurities can be flocculated, and the pore structure of a filter cake is optimized. The filter aid overcomes the defects that a traditional technology is single in function and poor in synergism, the filtering efficiency is remarkably improved, filter cake moisture and filtrate turbidity are reduced, raw materials are environmentally friendly, the preparation technology is simple, and the filter aid is suitable for industrial production and suitable for iron ore slurry solid-liquid separation and filtering scenes.

The invention provides a preparation method of polystyrene with controllable molecular weight, which comprises the following steps: under the protection of inert atmosphere, adding a reducing agent into a water-free and oxygen-free organic solvent, then adding a styrene monomer, a catalyst and a dormancy initiator, and controlling the temperature to carry out polymerization reaction; after the reaction is finished, terminating the reaction, and carrying out post-treatment to obtain polystyrene; wherein the catalyst is a copper bromide / pentamethyldiethylenetriamine complex; the dormancy initiator comprises any one or a combination of at least two of alkyl chloride, alkyl bromide or alkyl iodide; the reducing agent is graphene oxide grafted with a phenolic hydroxyl group, and the active component phenolic hydroxyl group is grafted on the carrier graphene oxide. The supported reducing agent is adopted, the dynamic environment of polymerization reaction is fundamentally changed, and the free radical concentration in the system is controlled at an extremely low level, so that the occurrence rate of side reaction is fundamentally and greatly reduced, and controllable molecular weight is realized; belongs to the technical field of organic synthesis.

The invention provides a hydrophobic associated polymer, a preparation method thereof and a polymer reinforced foam system. The hydrophobic associated polymer is formed by copolymerization of a hydrophobic monomer, acrylamide and sodium acrylate. Wherein the hydrophobic monomer is obtained by carrying out quaternization reaction on methacrylamide propyl dimethyl amine and alkyl bromide in a molar ratio of 1: (1-1.15). The foam system provided by the invention has good foamability and foam stability under strong oil-wet conditions.

The invention discloses a polysiloxane-based polyurethane / quaternary ammonium-zwitterionic pressure-sensitive adhesive double-layer film as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting amino-terminated polysiloxane with isophorone diisocyanate, hexamethylene diisocyanate and isophorone diamine to obtain a polysiloxane-based polyurethane elastomer; the preparation method comprises the following steps: reacting polyethylene glycol, polytetramethylene ether glycol, isophorone diisocyanate and N-methyldiethanolamine to obtain a polyurethane pressure-sensitive adhesive containing a tertiary amine group, and reacting the polyurethane pressure-sensitive adhesive with 1, 3-propane sultone and alkyl bromide to obtain a quaternary ammonium-zwitterionic polyurethane pressure-sensitive adhesive; and finally, coating the polysiloxane-based polyurethane elastomer with the quaternary ammonium-zwitterionic polyurethane pressure-sensitive adhesive, and evaporating the solvent to obtain the double-layer film. The raw materials are simple and easy to obtain, and the obtained product has good biocompatibility, adhesion, vapor permeability, water absorption, antibacterial property and protein adsorption resistance, so that the product is suitable for being used as a wound dressing for chronic infection.

The present invention relates to the technical field of polyurethanes, and discloses a TPU antistatic masterbatch formula and method, including 100 parts by weight of polyol, 10.7-16.2 parts by weight of diisocyanate, 8.6-15.2 parts by weight of tertiary amine sulfone chain extender, 1.4-3.7 parts by weight of alkyl bromide, 0.3-0.4 parts by weight of dibutyltin dilaurate, and 0.1-0.13 parts by weight of antioxidant; the present invention introduces an antistatic quaternary ammonium salt group into the main chain of the polyurethane, and the obtained TPU antistatic masterbatch has low surface resistivity, good electrical conductivity, and excellent antistatic performance. In addition, the introduction of a heat-resistant diphenyl sulfone structure is conducive to improving the heat resistance of the polyurethane TUP.