14 results about "Phenyl isocyanate" patented technology

The invention relates to the technical field of adhesives, and discloses an imidazolium ionic liquid and a preparation method and application thereof, the preparation method comprises the following steps: reacting omega-bromoalcohol with 1-(methoxymethyl) imidazole in acetonitrile, and washing with methyl tert-butyl ether to obtain a target ionic liquid precursor; and dissolving the product in acetonitrile, adding 4-trifluoromethyl phenyl isocyanate, and washing with methyl tert-butyl ether after the reaction is finished, thereby obtaining the target imidazolium ionic liquid. The imidazolium ionic liquid disclosed by the invention is applied to a PVB (Polyvinyl Butyral) adhesive, and the PVB adhesive shows excellent adhesion strength in a macroscopic adhesion performance test on the basis of multiple interactions, and particularly has excellent adhesion strength on aluminum. The obtained adhesive can be universally adapted to various substrates such as metal substrates and macromolecule substrates, and finally high-strength and high-durability intelligent adhesion performance is achieved.

The invention relates to a sound-insulation water-based paint for building floor slabs and a preparation method thereof, and belongs to the technical field of water-based paints. The preparation raw materials of the sound insulation water-based paint comprise water-based epoxy resin, a water-based curing agent, a sound insulation filler A, a sound insulation filler B and an auxiliary agent, wherein the auxiliary agent is at least one of a coalescing agent, a defoaming agent, a flatting agent and an anti-aging agent; the ionic liquid, the dipropylene glycol diacrylate and the ethyl acrylate are crosslinked into a polymer layer through free radical polymerization reaction, and the surface of the hollow glass bead is coated with the polymer layer, so that the sound insulation filler A is prepared; the preparation method comprises the following steps: carrying out SN2 nucleophilic substitution reaction on N-vinyl imidazole and 2-bromoethanol, and carrying out reaction on a product and 4-ethyl phenyl isocyanate, so as to prepare the ionic liquid; and modifying the nano clay by using an epoxy silane coupling agent to prepare a sound insulation filler B. The sound insulation water-based paint solves the problem of uneven dispersion of the hollow glass beads, and the impact sound pressure level improvement amount can reach 17.9 dB through weighting of a synergistic effect.

This invention provides an ether-based electrolyte for improving the high-voltage and long-cycle stability of sodium-ion batteries, its preparation method, and its application. The ether-based electrolyte comprises a base electrolyte and additives; the additives include aromatic isocyanates and alkoxysilanes. The aromatic isocyanates are a combination of one of the following: 6-fluoro-1H-1,3-benzodioxane-8-yl isocyanate, 3,4-dihydro-1,5-benzodioxane-7-isocyanate, or 3,4-(methylenedioxy)phenyl isocyanate, and 4-trifluoromethoxyphenyl isocyanate; the alkoxysilanes are 2-cyanoethyltriethoxysilane or 3,3,3-trifluoropropyltriethoxysilane. The electrolyte of this invention achieves synergistic regulation of interfacial reactions and interfacial film evolution, is suitable for sodium-ion half-cells or full-cells, and can improve overall stability and operating efficiency under high-voltage and long-cycle operating conditions.

The application provides a self-repairing ceramic fiber composite material, a preparation method and application, and belongs to the technical field of ceramic fibers. The self-repairing ceramic fiber composite material is prepared by the carbamoylation reaction between isocyanate groups generated by the pyrolysis of phenylcarbamate and hydroxyl groups on the surface of ceramic fibers to generate polymers with urea groups of dynamic covalent bonds. Meanwhile, the urea groups also interact with imidazole-based ionic liquids through hydrogen bonds to form a dynamic hydrogen bond network. The network and the network structure of the phenyl isocyanate polymer are dynamically interpenetrated to form a double dynamic network, so that the composite material has a self-repairing function. The self-repairing ceramic fiber composite material has self-repairing performance, high tensile strength and ionic conductivity, and is suitable for preparing new energy batteries, capacitors or flexible sensors.

The invention provides a preparation method and application of a naphthalene bridged tetraurea macrocycle, and belongs to the technical field of adsorption material preparation. According to the invention, 4, 4 '-methylene bis (phenyl isocyanate) and 1, 5-diaminonaphthalene are used as raw materials to prepare the naphthalene bridged tetraurea macrocyclic material. The naphthalene bridged tetraurea macrocyclic material has a fluffy porous structure, can be used for adsorption separation of elemental iodine and iodide ion pollutants, shows excellent iodine adsorption capacity and rate, also shows extremely high adsorption kinetics rate and high interference resistance, and can be recycled for multiple times.

This invention relates to the technical field, specifically to a method for preparing high-purity n-hexane based on selective extraction of non-aromatic hydrocarbons. The method includes first suspending and polymerizing a first oil phase in a continuous aqueous phase to form cross-linked polymethacrylate core microspheres, then adding a second oil phase containing glycidyl methacrylate for further polymerization to obtain a cross-linked polymethacrylate microsphere matrix; swelling the microsphere matrix with n-heptane / ethyl acetate, then sequentially amination, followed by sequential reaction with n-butyl isocyanate and 2-(trifluoromethyl)phenyl isocyanate to obtain a selective extraction resin; activating and packing the resin into a column for the separation of non-aromatic C6 mixed hydrocarbons, collecting the fraction with a n-hexane mass fraction greater than 99.2 wt% to obtain high-purity n-hexane. This method has the advantages of high separation selectivity and good cycle stability.

The present application relates to a kind of preparation methods of modified graphene oxide polyurethane composite, modified graphene oxide polyurethane composite prepared using the method and its application.The preparation method of the present application includes: graphene oxide is reacted with 4-(trifluoromethoxy) phenyl isocyanate to obtain modified graphene oxide;Toluene group-2,4-diisocyanate end-capped poly (propylene glycol), adipic acid dihydrazide is mixed with four hydrogen bond monomers, to obtain polyurethane base material;Modified graphene oxide is added to polyurethane base material and mixed uniformly, to prepare modified graphene oxide polyurethane material.By the method of the present application, functionalized graphene polymer composite anticorrosive material with self-repairing, strong mechanical properties can be prepared.The preparation method of the present application is simple, and the modified graphene oxide polyurethane composite prepared has higher self-repairing anticorrosive efficiency.

The invention provides a self-repairing ceramic fiber composite material, a preparation method and application, and belongs to the technical field of ceramic fibers. According to the self-repairing ceramic fiber composite material, isocyanate groups generated after pyrolysis of phenyl carbamate and hydroxyl groups on the surfaces of ceramic fibers are subjected to carbamylation reaction to generate a polymer with dynamic covalent bond urea groups, and meanwhile, the urea groups and imidazolyl ionic liquid form a dynamic hydrogen bond network through hydrogen bond interaction; the network is dynamically interspersed with the network structure of the phenyl isocyanate polymer to form a dual dynamic network, so that the composite material has a self-repairing function. The self-repairing ceramic fiber composite material disclosed by the invention has self-repairing performance, relatively high tensile strength and ionic conductivity, and is suitable for preparing a new energy battery, a capacitor or a flexible sensor.

The invention relates to the technical field of liquid crystal materials, and discloses 3, 3 '-biphenol-thiadiazolyl diurea as well as a preparation method and application thereof. Aminoacetonitrile hydrochloride and sodium nitrite react to generate aminoacetonitrile diazonium salt; reacting the aminoacetonitrile diazonium salt with hydrogen sulfide to generate 5-aminothiadiazole; the preparation method comprises the following steps: reacting 5-aminothiadiazole with 3-chloro-6-methoxy phenyl isocyanate to generate thiadiazolyl-3-chloroanisole-2-ylurea, and recording the thiadiazolyl-3-chloroanisole-2-ylurea as BP010-3; and reacting the BP010 <-3 > with sodium hydroxide to generate BP010 <-4 >, and reacting the BP010 <-4 > with hydrochloric acid to generate the 3, 3 '-biphenol-thiadiazolyl diurea. According to the liquid crystal material 3, 3 '-biphenol-thiadiazolyl diurea, different functional groups are introduced into biphenol to achieve different application scenes, compared with a traditional material, the material has better electrical conductivity, abrasion resistance, moisture resistance, cold resistance and the like, and the technical barrier of liquid crystal material application in the market is broken through.

The application discloses a xylene tolerance adjustable adduct type curing agent and a preparation method thereof. The adduct type curing agent comprises a combination of TDI monomers and halogenated methyl phenyl isocyanate in raw materials; in the combination of TDI monomers and halogenated methyl phenyl isocyanate, the proportion of halogenated methyl phenyl isocyanate is 0.2-60wt%. The application can obtain adduct products with different molecular weight distribution by adjusting the content of halogenated methyl phenyl isocyanate in TDI under the same formula system, and when the hydroxyl resin component of the paint is changed, the actual use condition can be flexibly adjusted, and the purpose of changing the compatibility of the adduct product and the hydroxyl resin by single adjustment of the composition of the TDI component raw material is achieved.

This invention provides a nano-blocking agent, its preparation method, and its application. The steps include: (1) mixing a first raw material system comprising nano-zinc aluminum oxide and aromatic carboxylic acid in an alcohol solvent to carry out a first reaction, thereby obtaining a first material; (2) mixing a second raw material system comprising polyether polyol and phenyl isocyanate to carry out a second reaction, thereby obtaining a second material, and then emulsifying the second material to obtain a polyurethane dispersion; (3) mixing the polyurethane dispersion with the first material to obtain the nano-blocking agent. This nano-blocking agent utilizes the π-π adsorption principle to enhance the sealing effect of microcracks in coal and rock.

The invention belongs to the technical field of chemical synthesis equipment, and particularly relates to a continuous flow reactor for synthesizing phenyl isocyanate, which comprises a reaction tank with a circular section, the top end of the reaction tank is provided with a solvent inlet, and the reaction tank is communicated with the solvent inlet from top to bottom. The reaction tank is sequentially provided with an aniline inlet for radially entering aniline, a first-layer liquid phase distribution plate, a first phosgene inlet, a second-layer liquid phase distribution plate, a third-layer liquid phase distribution plate, a partition plate, a second phosgene inlet, a fourth-layer liquid phase distribution plate, a fifth-layer liquid phase distribution plate and a jet stirring assembly, and a finished product outlet is formed in the bottom of the reaction tank; each of the upper reaction cavity and the lower reaction cavity is divided into an outer reaction area and an inner reaction area; the invention further particularly relates to a continuous flow reaction process for phenyl isocyanate synthesis, continuous production can be carried out, the reaction is more complete, and the production efficiency is high.

The invention discloses a synthesis method of a quinazolinyl-aryl urea derivative A-2 and application of the quinazolinyl-aryl urea derivative A-2 in preparation of bladder cancer resistant drugs, and the synthesis method of the compound A-2 comprises the following steps: (1) reducing nitryl by adopting an ammonium chloride aqueous solution and activated iron powder, and (2) reacting an intermediate II with 2, 6-diethyl phenyl isocyanate to obtain the quinazolinyl-aryl urea derivative A-2, according to the application of the compound A-2 in preparation of the bladder cancer resisting medicine, an oral preparation of the compound A-2 can be applied to treatment of middle and high risk non-muscular layer invasive bladder cancer, and the oral preparation of the compound A-2 can be independently used and can also be used before or after an operation, so that the treatment effect is achieved, the recurrence rate is effectively reduced, and the compliance of a patient is improved; the post-treatment process of the synthesis method of the compound A-2 is simple and easy to operate, and the yield of the intermediate II is as high as 94%.

The application relates to the technical field of defoaming agent preparation, in particular to a high-content organic silicon defoaming agent composition for a high-temperature and high-shear system. The high-content organic silicon defoaming agent composition is prepared by the following steps: firstly, octamethylcyclotetrasiloxane, tetramethyltetraphenylcyclotetrasiloxane and hydrogen-containing polymethylsiloxane are copolymerized to construct a methylphenyl polysiloxane skeleton; secondly, acetyl-terminated allyl epoxy oxirane / epoxy propane copolyether and allyl glycidyl ether are introduced step by step; then, the obtained product is sequentially reacted with N,N-diethyl-1,3-propanediamine, phenyl isocyanate, diisopropylamine and maleic anhydride to obtain a urea-based / esterified modified polysiloxane; finally, the urea-based / esterified modified polysiloxane is compounded with methylphenyl silicone oil, dimethyl silicone oil, hydrophobic fumed silica and precipitated silica to obtain the high-content organic silicon defoaming agent composition. The obtained defoaming agent has the advantages of instant defoaming, excellent sustained defoaming, strong shear resistance, storage stability and no floating oil in a high-temperature circulating cleaning liquid system, a high-speed sand mill slurry system and the like.