389 results about "Borane" patented technology

Disclosed is an adhesive body. The adhesive body comprises a first substrate, a second substrate, and an adhesive layer that bonds the first substrate and the second substrate to each other. The haze of the first substrate and the second substrate is 5% or more. The adhesive layer contains a cured product of an adhesive composition containing: an organoborane complex; a compound having a radically polymerizable group; and a thermal acid generator.

A polyfunctional organohydrogensiloxane is prepared using a fluorinated triarylborane Lewis acid as catalyst. The polyfunctional organohydrogensiloxane may be formulated into release coating compositions. Alternatively, the polyfunctional organohydrogensiloxane may be further functionalized with a curable group to form a clustered functional organosiloxane. The clustered functional organosiloxane may be formulated into thermal radical cure adhesive compositions.

The present invention relates to the technical field of resin molds, and specifically to a toughened epoxy resin plastic mold and a preparation method thereof. In order to improve the toughness of the epoxy resin mold, a modified nano-carbon fiber component is added to the epoxy resin matrix. Adding it to the epoxy resin matrix can effectively disperse stress, thereby improving the toughness of the material. On this basis, the present invention also conducts a modification treatment on the nano-carbon fiber material, introducing a borane structure and fluorine element on its surface, and conducting an epoxidation treatment on its surface, so that the nano-carbon fiber can participate in the curing of the epoxy resin, improving the bonding strength with the epoxy resin matrix. Moreover, the fluorine element and borane group introduced in this process can further enhance the stability and friction resistance of the epoxy resin, reducing the damage suffered by the mold during use.

The invention relates to a method for constructing a C-N bond or a C-C bond through an insertion reaction of oxygen-sulfur ylide and aromatic amine. According to the method, tris (pentafluorophenyl) borane is taken as a catalyst, oxygen-sulfur ylide and aromatic amine are taken as raw materials, and N-H or C-H insertion reaction is carried out under different temperatures and solvents. According to the method, the defect that a metal catalyst or an oxidizing agent is used traditionally is overcome, and on the basis of the method, various alpha-amino-acid ester derivatives or diaryl acetate derivatives can be obtained by using different aromatic amines and oxygen-sulfur ylide as substrates. According to the method, the raw materials are easy to obtain, the operation is simple, the use of a catalyst and an oxidizing agent is avoided, and the method is a mild, effective, feasible and environment-friendly method for preparing the alpha-amino-acid ester and the diaryl acetate and has important application value.

The invention provides a boron-containing plastic scintillator and a preparation method thereof, the boron-containing plastic scintillator comprises the following raw materials by mass: 20%-40% of 2, 5-diphenyloxazole: styrene, 0.1%-0.5% of 7-diethylamino-4-methylcoumarin: styrene, 1%-10% of divinylbenzene: styrene, 0.1%-0.2% of azodiisobutyronitrile: styrene, and the balance of water. The ratio of m-carborane or o-carborane to styrene is 1%-5%. The preparation method comprises the following steps: S1, adding styrene into a container in an inert atmosphere, and introducing inert gas into the container; s2, in an inert atmosphere, adding other raw materials into the container, performing ultrasonic stirring, heating the raw materials in the container to 50 DEG C at the same time, performing heat preservation at 50 DEG C for 72 hours, performing stepped heating for three times to 70 DEG C, performing heat preservation at 70 DEG C for 72 hours, and then performing cooling to room temperature to obtain the boron-containing plastic scintillator. The cross-linking agent is added into the plastic scintillator, so that the plastic scintillator is harder in texture, not prone to deformation, stable and transparent in performance and capable of working normally at the temperature of 60 DEG C, the durability is obviously improved, and the applicable environment is more.

The invention discloses a multilayer nanostructure metal hydride and a preparation method thereof.The preparation method comprises the steps that transition metal ion salt and a carbon material are added into a polar solvent to be mixed, heating and stirring are conducted to obtain solid powder, and the solid powder is subjected to a hydrogen thermal reduction reaction to obtain a functionalized carbon material; a metal hydride raw material and a functionalized carbon material are added into an organic solvent, ultrasonic treatment and mixing are carried out, a mixed solution is obtained, and the metal hydride raw material is a mixture of an alkyl metal Mg compound or an alkyl metal Li compound and a borane compound; and in a hydrogen atmosphere, carrying out solvothermal reaction on the mixed solution, and then centrifuging, washing, filtering and drying to obtain the multilayer nanostructure metal hydride. The multilayer nano-structure metal hydride prepared by the preparation method has relatively high hydrogen absorption and hydrogen storage capacity.

According to the method for preparing the nano noble metal by directly introducing the reducing agent borane cluster into the carbon carrier, the borane cluster weak reducing agent is loaded on the carbon carrier to prepare the loaded nano noble metal through in-situ reduction, and agglomeration of metal sites can be avoided through the weak reducibility of the borane cluster; the reducing agent is introduced to the carbon carrier, and the hard supporting effect of the carbon carrier can also avoid large-scale aggregation of formed metal. The nano precious metal is dispersed in the carbon carrier, the dispersity of the nano precious metal is good, and the size of the nano precious metal is smaller than 10 nanometers. Compared with the prior art, the reducing agent borane cluster is directly introduced to the surface of the carbon carrier, in-situ reduction of precious metal ions is achieved, the high-dispersion small-particle-size supported nanometer precious metal is effectively obtained, and the method is easy to operate, reliable in preparation process, good in repeatability and beneficial to large-scale preparation.

A metal-organic coordination compound comprises one divalent Europium ion and a macrocyclic organic ligand, further comprising in the coordination compound at least one borane cluster anion (selected from (3-1) to (3-3)), or at least one borate cluster anion formed from two borate cluster fragments (selected from (3-4) to (3-8)), which are covalently linked with each other at the dashed line, preferably via a linear C1-15- alkylene spacer, or with the macrocyclic organic ligand being singly or twofold negatively charged by means of covalent attachment of one to two borate cluster fragments (selected from (3-4) or (3-8)) and wherein the macrocyclic organic ligand can be covalently attached to the polymer backbone of a polymer with a molecular weight Mn above 1000 g / mol.

Disclosed is a preparation method for a 1,5-dihydro-2,4-benzodiazepine-3-one derivative. According to the preparation method, required raw materials are cheap and easily available; the use of a flammable and explosive reagent namely borane, a difficult-to-handle and highly-toxic reagent namely triphosgene, and a precious metal namely palladium is avoided; the operation is simple and convenient, production costs are reduced; and the preparation method is more suitable for industrial preparation and use, and has higher yield than that of the prior art. Additionally, further disclosed are an intermediate as shown in formula III or a salt thereof for preparing the derivative, and a preparation method for the intermediate or salt.

The present invention relates to a dental diaphragm copolyester and a preparation method thereof, the preparation method comprises the following steps: 2, 5-furandicarboxylic acid or an ester thereof, aliphatic or alicyclic diol and (2-hydroxy-5-formyl phenyl) diphenylborane are subjected to a reaction to obtain an esterification or ester exchange product; and carrying out condensation polymerization on the esterification or ester exchange product and the stabilizer to prepare the copolyester for the dental diaphragm. 2, 5-furandicarboxylic acid is derived from a renewable biomass resource and meets the requirements of green and sustainable development; compared with terephthalic acid and furan ring structures, the film has higher rigidity and polarity, the yield of hot press molding is improved, the same correction force can be met by a thinner film, the wearing comfort of a patient is improved, and meanwhile stress relaxation is improved; the catalyst perfectly combines strong Lewis acidity, intramolecular stabilization and potential bifunctional activation through structural design, provides possibility for efficient and green synthesis of polyester, avoids use of heavy metal, and is higher in biological safety.

Method of manufacturing semiconductor device includes forming photoresist layer over substrate. Forming photoresist layer includes combining first precursor and second precursor in vapor state to form photoresist material, wherein first precursor is organometallic having formula: MaRbXc, where M at least one of Sn, Bi, Sb, In, Te, Ti, Zr, Hf, V, Co, Mo, W, Al, Ga, Si, Ge, P, As, Y, La, Ce, Lu; R is substituted or unsubstituted alkyl, alkenyl, carboxylate group; X is halide or sulfonate group; and 1≤a≤2, b≥1, c≥1, and b+c≤5. Second precursor is at least one of an amine, a borane, a phosphine. Forming photoresist layer includes depositing photoresist material over the substrate. The photoresist layer is selectively exposed to actinic radiation to form latent pattern, and the latent pattern is developed by applying developer to selectively exposed photoresist layer to form pattern.

The invention provides a synthetic method of an o-carborane compound. The synthetic method is suitable for preparing an ester group substituted o-carborane derivative. The synthesis method comprises the following synthesis steps: by taking 1-carboxyl-2-(substituent)-o-carborane and a hypervalent iodine reagent as raw materials, carrying out hydration and substitution reaction in a solvent at the reaction temperature of 50-120 DEG C for 2-36 hours to generate the 1-ester-2-(substituent)-o-carborane compound. The reactants involved in the invention have good universality, and the functional groups of the substrate have good compatibility; the synthesis method provided by the invention is relatively high in selectivity and yield, single in reaction system composition, simple in post-treatment and easy to implement.

The invention relates to the technical field of electrode materials, in particular to a nitrogen-boron-silicon-carbon negative electrode material and a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: mixing an organic carbon source, an organic nitrogen source, a boron source, a cross-linking auxiliary agent and a solvent, and sequentially carrying out cross-linking reaction and calcination to obtain a nitrogen-boron-doped porous carbon matrix; carrying out silicon or silicon-boron deposition on the nitrogen-boron-doped porous carbon matrix and reaction gas in a fluidized state to obtain a silicon-carbon precursor; the reaction gas is mixed gas of silane and borane or silane; and coating the silicon-carbon precursor with a mixed gas of a carbon source, a nitrogen source and a boron source in a fluidized state to obtain the nitrogen-boron-silicon-carbon negative electrode material. The nitrogen-boron-silicon-carbon negative electrode material prepared by the preparation method disclosed by the invention has excellent cycle performance, rate charge-discharge performance and relatively low expansion effect.

The invention discloses an inorganic-organic hybrid cross-linked network high-toughness material and a preparation method thereof, and belongs to the technical field of engineering material preparation. The high-toughness material is composed of an inorganic phase component and an organic phase component, the inorganic phase component is prepared from 5 to 10 parts of amino modified silicon dioxide nanoring; the organic phase component is prepared from the following components in parts by weight: 90 to 105 parts of polycaprolactone glycol, 14.5 to 16.5 parts of isophorone diisocyanate, 0.8 to 1.5 parts of dibutyltin dilaurate, 4 to 6 parts of bis-catechol borane and 6 to 10 parts of polydopamine nano particles. The fracture performance of the material can reach 20 kJ / m or above and is far higher than-1 kJ / m of a common elastomer and-10 kJ / m of high-toughness hydrogel, and meanwhile the tensile strength of 30 MPa or above is kept. According to the material disclosed by the invention, the dynamic borate bond is utilized, after the material is in contact with a damaged section, efficient self-repairing can be realized after the material is placed at room temperature for 24 hours, and the repairing efficiency is gt; by heating and applying pressure, the whole material can be reshaped through fracture and recombination of the dynamic bonds, and green and sustainable effects are achieved.

The invention provides a preparation method of a grinding aid for Sc / O doped sulfide solid electrolyte, which comprises the following steps: mixing and reacting ethanolamine thioglycolate, 2-vinyl-5, 5-dimethyl-1, 3, 2-borane dioxide, 1-allyl-3-ethylimidazolium hexafluorophosphate and potassium ethoxide in a solvent, reacting the ethanolamine thioglycolate with the 2-vinyl-5, 5-dimethyl-1, 3, 2-dioxo-borane, and reacting with the potassium ethoxide to obtain the grinding aid for Sc / O doped sulfide solid electrolyte. The grinding aid for the Sc / O doped sulfide solid electrolyte is prepared by the following steps: carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1, 2-borane dioxide, carrying out sulfydryl-alkenyl addition reaction on ethanol amine thioglycolate and 1-allyl-3-ethylimidazolium hexafluorophosphate, and removing a solvent after the reaction is finished, so as to obtain the grinding aid for the Sc / O doped sulfide solid electrolyte. The grinding aid can improve the microstructure of the electrolyte material, thereby enhancing the conductivity and safety of the electrolyte material.

The invention relates to a method for preparing d-borneol by taking natural camphor as a raw material, which comprises the following steps: taking a borane complex as a reducing agent, and obtaining the d-borneol under the catalysis of a chiral catalyst; the molar ratio of the borane complex to the dextro-camphor is 0.6-5; the catalyst is (R)-2-methyl-CBS-oxazole borane, and the catalyst is an organic solvent; the molar ratio of the (R)-2-methyl-CBS-oxazole borane to the dextrorotation camphor is 0.04 to 1.

A composition and method can be used in the preparation of various siloxanes. The composition and method employ a fluorinated triarylborane Lewis acid, a hydrocarbonoxy-functional organosilicon compound, and a silyl hydride. The fluorinated triarylborane Lewis acid catalyzes reaction of a hydrocarbonoxy moiety (from the organosilicon compound) and a silicon-bonded hydrogen atom (from the silyl hydride) to form a siloxane bond.

The invention discloses lithium borohydride and a preparation method thereof, and belongs to the technical field of hydrogen storage material preparation. The preparation method provided by the invention comprises the following steps: in a hydrogen atmosphere of 50bar, mixing lithium hydride, triethylamine borane and an organic solvent, and performing mechanical ball milling to obtain a mixture; and evaporating the solvent in the mixture, and carrying out heat treatment to obtain the lithium borohydride. Lithium borohydride is prepared through mechanical ball milling, the preparation process is high in safety coefficient, low in energy consumption, simple in process, mild in condition, adjustable in reaction process and easy to implement; the optimal yield is 80%, and the method is originally superior to other similar processes, has technical conditions for efficient mass production, and has a wide application prospect in hydrogen storage materials.

The invention discloses a B, N, Fe and O multi-element co-doped porous carbon-based material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a water-soluble carbohydrate and a water-soluble ferric salt in deionized water according to a certain ratio, adding dimethylamino borane and the like as a boron-nitrogen source, uniformly mixing under the ultrasonic action, and drying to form a carbon precursor compound; and placing the dried carbon precursor compound in a vacuum furnace for high-temperature carbonization to obtain the B, N, Fe and O multi-element co-doped porous carbon-based material. Iron salt, dimethylaminoborane and the like are respectively used as multi-element doping sources and pore-forming is carried out on the carbon matrix at the same time, so that a hierarchical pore structure is obtained. The multi-element co-doped porous carbon-based material with a hierarchical pore structure is constructed by adopting a simple method, abundant electrochemical active sites can be provided by doping multiple heteroatoms, and the electrochemical performance of a carbon matrix is improved. The material can be applied to supercapacitor electrodes and sodium ion battery materials.

The invention relates to a low-expansion moisture-resistant electronic component packaging resin adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The resin adhesive comprises the following components: modified resin, phenyl methyl organic silicon resin, epoxy vinyl resin, a dynamic functional curing agent, a microencapsulated dicyandiamide curing agent, perfluorooctyltriethoxysilane, functional filler and the like; the modified resin is obtained by modifying hydrogenated bisphenol A epoxy resin with hydrogen-terminated polydimethylsiloxane and trimethylsiloxy silicate ester, adding a silane coupling agent and mixing; the dynamic function curing agent is obtained by reacting hexamethylenediamine and intermediate powder obtained by reacting 2, 3-dihydroxy benzaldehyde with pinacol borane; the functional filler comprises silicon dioxide and boron nitride which are subjected to surface treatment by a silane coupling agent. The low-expansion and high-moisture-resistance electronic component packaging resin adhesive is prepared from the components according to a specific ratio and a specific method, the components have a synergistic effect and play advantages, and the packaging reliability and the service life of an electronic component are guaranteed.

The invention relates to an RGD (arginine-glycine-aspartic acid) peptide modified mercaptododeborane derivative and a synthesis method, the derivative utilizes RGD peptide to perform chemical coupling modification on mercaptododeborane anion salt (BSH), and the BSH and the RGD peptide are connected through a hydrophilic intermediate connector with a double bond at one end and carboxyl at the other end. A hydrophilic chain is selectively introduced to serve as an intermediate connector, a series of compounds are synthesized through a convenient and efficient sulfydryl-alkene click reaction and an amino-carboxyl amidation condensation reaction and are purified, various cationic BSH salts and RGD peptide are connected, and targeted modification of the RGD peptide on an existing boron carrying agent BSH is achieved. The derivative obtained by the invention is not reported before, has the potential to improve the tumor targeting ability of the existing boron carrying agent, and is expected to be used as a drug compound for BNCT treatment.

A process for reducing a carboxylic acid to an alcohol using an amine-borane in the presence of a Lewis acid catalyst.

The invention discloses a preparation method, an intermediate and application of menochromone. The preparation method comprises the following steps: reacting 4-bromopyrrole-2-carboxylic acid with propargylamine to generate 4-bromo-N-propynyl pyrrole-2-formamide; the preparation method comprises the following steps: reacting 4-bromo-N-propinyl pyrrole-2-formamide with pinacol borane to generate a mixture; reacting the mixture with 2-(t-butyloxycarboryl amino)-5-iodo-1H-imidazole to generate (E)-(5-(3-(4-bromo-1H-pyrrole-2-formamido) prop-1-ene-1-yl)-1H-imidazole-2-yl) tert-butyl carbamate, and reacting the (E)-(5-(3-(4-bromo-1H-pyrrole-2-formamido) prop-1-ene-1-yl)-1H-imidazole-2-yl) tert-butyl carbamate with the tert-butyl carbamate; and reacting the (E)-(5-(3-(4-bromo-1H-pyrrole-2-formamido) prop-1-ene-1-yl)-1H-imidazole-2-yl) tert-butyl carbamate with a dioxane hydrochloride solution, so as to generate the menochromone. The invention provides a preparation method of menosin, which is short in synthetic route, simple and convenient to operate, high in product yield and suitable for industrial production.

The invention discloses a preparation method of a copper-palladium alloy loaded nano titanium dioxide semiconductor material as a catalyst for a carbon dioxide reduction reaction. Firstly, alloy nanoparticles are generated through a sol-gel method, the morphology of the nanoparticles is controlled and agglomeration is prevented through oleylamine and oleic acid, and borane-tert-butylamine is added at the temperature of 170 DEG C to regulate and control the sizes of the generated alloy nanoparticles. A series of characterizations prove that the catalyst has a very good particle loading condition, uniform particle distribution and increased reaction active sites, and shows excellent activity when being applied to a carbon dioxide reduction reaction, when the loading capacities of copper and palladium are respectively 1%, the activity of the obtained catalyst is the highest, the methane generation rate can reach 20.23 mol / g / h, and the methane generation rate can reach 20.23 mol / g / h. The selectivity of methane reaches 100%.

The application discloses a catalyst for isocyanate borohydration reaction and a preparation and application method thereof. When the catalyst is used for catalyzing the borohydration reaction of isocyanate and borane to synthesize borate, the catalyst has high catalytic activity, mild reaction conditions (the reaction can be carried out at room temperature), short reaction time, high product yield (≥99%), and the reaction is simple, controllable, and simple in post-treatment.

The present invention relates to the technical field of adhesives, and in particular to an aluminum-plastic film adhesive for lithium battery soft packs and a preparation method thereof. The adhesive comprises the following components in parts by weight: 100 parts of a polyolefin resin, 1-5 parts of a boric acid ester, 0.5-1 parts of a borane, 0.5-1 parts of a boric acid, 0.5-2 parts of an allyl diepoxypropyl isocyanate, and 0.1-0.5 parts of a peroxide initiator. The allyl diepoxypropyl isocyanate in the present invention can greatly improve the adhesion between the polyolefin resin and polypropylene (PP) and aluminum foil. Under the initiation of the initiator, the double bonds of the allyl diepoxypropyl isocyanate undergo a grafting reaction with the polyolefin, thereby grafting the allyl diepoxypropyl isocyanate onto the polyolefin. Simultaneously, the epoxy bonds react with the boric acid, the boric acid ester, and the borane. Furthermore, the carbonyl groups and N atoms on the allyl diepoxypropyl isocyanate molecules both increase the polarity of the polyolefin, and can generate weak bonding reactions with the boron atoms and the aluminum foil.

The present application relates to a kind of catalyst composition and its application in catalytic preparation optically active secondary alcohol, the catalyst composition includes chiral ionic bridged aryloxyalkane rare earth complex and additive, the additive is selected from one or more of pyrimidine, N,N-dicyclohexylmethylamine, 4,4'-dipyridyl.The above-mentioned catalyst composition can be used for synergistically catalyzing asymmetric borohydration of chalcone and its derivatives with pinacol borane, and show high catalytic activity and high enantioselectivity, product yield is as high as 99%, ee value can reach 84%, provide a reliable new way for the efficient, high selective synthesis of optically active secondary alcohol.

The invention relates to a method for preparing a boronized carbonyl derivative by catalyzing an alpha, beta-unsaturated carbonyl derivative with a heterogeneous photocatalyst, which comprises the following steps: by taking the alpha, beta-unsaturated carbonyl derivative and N-heterocyclic carbene borane as raw materials and cadmium sulfide as the heterogeneous photocatalyst, reacting for 1-100 hours at 0-80 DEG C in an inert atmosphere and under the illumination condition, thereby obtaining the boronized carbonyl derivative. The product borylated carbonyl derivative is obtained. The alpha-boron substituted compound is prepared by adopting the heterogeneous photocatalyst for the first time, the reaction condition is mild, and the catalyst can be recycled.

The present invention belongs to the technical fields of chemical pharmaceuticals and fine chemical preparations. Specifically, it relates to a method for the visible-light catalytic synthesis of organoboron compounds. This method uses aryl diazoacetate compounds and aminoborane adducts as raw materials, and under the irradiation of visible light, organoboron compounds are obtained. The novel method for the visible-light catalytic synthesis of organoboron compounds provided by the present invention provides a simple, efficient, and environmentally friendly new method for the synthesis of such compounds, and has wide applications in the technical fields of chemical pharmaceuticals and fine chemical preparations.

The invention belongs to the technical field of organic luminescent materials and semiconductors, and provides a seven-membered ring boron oxide compound, a preparation method thereof and an electroluminescent device. The structural formula of the seven-membered ring boron oxide compound is as shown in formula (1): # imgabs0 #, the electroluminescent device is prepared by taking the seven-membered ring boron oxide compound as a guest luminescent material, and the technical problem of low luminous efficiency of the existing compound containing a boron oxide structure as a luminescent material is solved.