43 results about "Organic Boron Compounds" patented technology

The invention discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of polymer coating materials. The coating film sequentially comprises a nano particle skeleton layer, a dynamic borate bond layer and a super-amphiphobic functional layer from inside to outside, and the three-layer gradient design synergistically realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The framework layer takes SiO2-TiO2 composite nanoparticles as a substrate and provides support; the dynamic boric acid ester bond layer forms a dynamic network through polycondensation of an organic boron compound, endows the self-repairing capability and enhances interface bonding; the super-amphiphobic functional layer is formed by grafting a fluorine-containing organosilicon compound and has hydrophobic and oleophobic properties. A multi-layer structure is constructed step by step, the reaction condition is mild, the operation is simple, the cost is low, the method is suitable for large-scale industrial preparation, the coating film has excellent super-amphiphobic performance and interface adhesion performance, the super-amphiphobic performance of the coating film can still be kept stable in long-term use or a complex environment, and the problem that an existing super-amphiphobic material is prone to damage is effectively solved.

The invention discloses an anti-oxidation and anti-scouring heat prevention and insulation composite material, a preparation method and application, and belongs to the technical field of high-temperature thermal protection materials. According to the method, a two-step in-situ modification method is adopted, hydrolyzed organosilane reacts with phenolic resin to prepare silicon modified phenolic resin, then the silicon modified phenolic resin is bonded with an organoboron compound to obtain boron-silicon co-modified phenolic resin, a curing agent is added, then the boron-silicon co-modified phenolic resin is injected into a fiber reinforcement mold, and a finished product is obtained through a sol-gel reaction and normal-pressure drying. According to the invention, boron and silicon elements are embedded into phenolic aldehyde molecular chains through covalent bonds to form a boron-silicon-carbon hybrid network, a nano ceramic phase and a compact glassy protective layer are generated at high temperature, and the coating has excellent anti-scouring property, thermal stability and heat insulation property. The preparation process is simple and controllable, is suitable for large-scale production, can accurately regulate and control the performance, and is suitable for thermal protection parts of supersonic aircrafts.

An organic electroluminescent element using a compound represented by general formula and an organoboron compound has high efficiency, low driving voltage, and long life. A3, R1, and R2 each represents a monovalent aromatic hydrocarbon group or the like, A1 and A2 each represents a naphthylene group, and L1 to L3 each represents a single bond or a divalent aromatic hydrocarbon group or the like.

The application discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of high polymer coating materials. The coating film is sequentially composed of a nanoparticle skeleton layer, a dynamic borate ester bond layer and a super-amphiphobic functional layer. The three-layer gradient design cooperatively realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The skeleton layer takes SiO2-TiO2 composite nanoparticles as a substrate to provide support. The dynamic borate ester bond layer forms a dynamic network through organic boron compound polycondensation, and is endowed with self-repairing capability and enhanced interface combination. The super-amphiphobic functional layer is formed by grafting fluorine-containing organosilicon compounds, and has hydrophobic and oleophobic properties. The multilevel structure is constructed in steps, the reaction condition is mild, the operation is simple, the cost is low, and the method is suitable for large-scale industrial preparation. The coating film has excellent super-amphiphobic performance and interface adhesion performance, and the super-amphiphobic performance of the coating film can still be kept stable in long-term use or complex environment, and the problem that existing super-amphiphobic materials are prone to damage is effectively solved.

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 application discloses a diacid, a high-barrier nylon resin and a preparation method and application of the diacid, and has the molecular structural formula of The preparation method of the diacid comprises the following steps: adding halogen-substituted carbazole, an organic boron compound, a catalyst and a promoting metal transfer auxiliary into a strong polar solvent, refluxing, filtering, and drying to obtain the diacid. The high-barrier nylon resin has the molecular structural formula of wherein a=6, 9, 10, 12 or 14, b=4, 8, 10 or 12, and the molar ratio of m to n is 10-50:70-190. The application further discloses a preparation method and application of the high-barrier nylon resin. The diacid has a large planar structure, high reaction activity and excellent thermal stability. The high-barrier nylon resin product is diversified, and has excellent mechanical properties, heat resistance and gas barrier property. The method has simple production process and is suitable for industrialized continuous production.

To provide a resist composition having high sensitivity and being able to form a pattern with a low exposure amount. A resist composition containing an organic tin compound and an organic boron compound represented by the following formula. (In the formula, R1, R2, and R3 each independently represent an organic group that bonds to boron by a carbon atom, an oxygen-containing organic group that bonds to boron by an oxygen atom, or OH. The oxygen-containing organic group may contain a boron atom. Two groups selected from the group consisting of R1, R2, and R3 may link to form a ring structure.)

The application discloses a method for selectively oligomerizing ethylene. The method comprises the following steps: filling ethylene into a reaction kettle which is replaced by nitrogen, adjusting temperature and pressure to reaction temperature and reaction pressure; adding a main catalyst and a cocatalyst composition into the reaction kettle to carry out an ethylene oligomerization reaction; after the reaction is completed, temperature and pressure are reduced, and a termination agent is used to terminate the reaction; the molar ratio of total boron and aluminum in the main catalyst and the cocatalyst composition is 1:0.1-7000; the main catalyst is formed by a ligand and a transition metal compound, and the molar ratio of the ligand and the transition metal compound is 0.5-1.5:1. The cocatalyst composition comprises an organic boron compound, an alkyl aluminum compound and an alkyl aluminum oxide compound.

The invention discloses a tetra-coordinated boron-oxygen heterocyclic compound and a preparation method thereof, and belongs to the technical field of pharmaceutical and chemical intermediates and related chemistry. The method comprises the following steps: by taking a bis (pentafluorophenyl) borane dimethyl sulfide complex [(C6F5) 2BHSMe2] as a boron source, firstly carrying out hydroboronation reaction on the bis (pentafluorophenyl) borane dimethyl sulfide complex [(C6F5) 2BHSMe2] and an eneyne compound to generate a three-coordination alkenyl boron dienophile intermediate in situ, and then carrying out reverse electron demand Diels-Alder reaction on the three-coordination alkenyl boron dienophile intermediate and an acetylenic ketone compound to synthesize a series of tetra-coordination boron-oxygen heterocyclic compounds. The method has the advantages of mild reaction conditions, good selectivity, high yield, wide substrate application range, environmental friendliness, simplicity and convenience in operation and the like, opens up a new way for synthesis of the tetra-coordinated organoboron compound, and has higher application value and social and economic benefits.

A method for making fumed lithium borate, the method comprising: preparing a solution of a lithium precursor, preferably a lithium carboxylate containing 5 to 20 carbon atoms, and a boron source, preferably an organic boron compound, feeding the solution to a flame burning in a flame reaction zone to produce a fumed product comprising fumed lithium borate particles; and obtaining the fumed product.

The application relates to an ethylene selective oligomerization catalyst containing a saturated aliphatic ring skeleton biphosphine ligand and preparation and application thereof, the catalyst comprising a ligand, a transition metal compound and an activator, the chemical structural formula of the ligand being: wherein the groups R 1 to R 4 are each independently hydrogen, an alkyl group, an alkoxy group, an alkenyl group or an aromatic group; n is a positive integer, and the value range is 3-5; the transition metal in the transition metal compound is selected from iron, cobalt, nickel, copper, titanium, vanadium, chromium, manganese, molybdenum, tungsten or palladium; and the activator comprises an alkyl aluminum compound, an aluminoxane compound or an organic boron compound. Compared with the prior art, the catalyst provided by the application has higher catalytic activity and total selectivity of 1-hexene / 1-octene, and the polymer content is lower, so that the production cost is greatly reduced, the requirements of the industrial department can be met, and the catalyst has important application value.

The invention belongs to the field of olefin polymerization, and discloses a homogeneous metallocene catalytic system and an ethylene / alpha-olefin copolymerization method thereof. The catalytic system comprises a metallocene compound A, an aluminoxane or modified aluminoxane component B1, an organic boron compound component B2, an aluminum alkyl compound component B3 and an ultra-dry solvent component C, according to needs, the composition further comprises a copolymerization modification auxiliary agent component D. The component B1 can protect the metal active center of the main catalyst A and initiate chain growth; the component B2 can effectively improve the copolymerization activity of the main catalyst A; and the component B3 can further significantly improve the copolymerization activity of the main catalyst A and regulate and control the average sequence length distribution of ethylene and alpha-olefin in the copolymer. The copolymerization performance of the main catalyst A can be changed by changing different modification auxiliary agent components D, and accurate regulation and control of a copolymer chain segment microstructure are realized.

The invention discloses a preparation method of a polyolefin elastomer, which comprises the following steps: carrying out gas-phase polymerization on ethylene and alpha-olefin under the action of metallocene catalyst solid particles and an antistatic agent to obtain the polyolefin elastomer, wherein the metallocene catalyst solid particles are prepared by using components including a metallocene compound, an organic boron compound and silica gel as raw materials through a spray drying method, and the structural formula of the metallocene compound is shown in the specification; the organic boron compound is N, N-dimethyl phenylammonium tetrakis (perfluorophenyl) borate. Compared with the prior art, the ethylene / alpha-olefin random copolymer can be prepared without using expensive cocatalysts such as MAO or MMAO, the consumption of organic boride of the cocatalysts is relatively low, the number of flakes and blocks caused by static electricity of polymer powder is small, the particle morphology is good, and the method has a good application prospect.

The invention discloses preparation of a chitosan / bentonite loaded copper material and application of the chitosan / bentonite loaded copper material in catalysis of boron addition reaction, and relates to the field of boron compound synthesis. According to the application, an alpha, beta-unsaturated compound and bis (pinacolato) diboron are used as raw materials, a chitosan / bentonite loaded copper material is used as a catalyst, reaction is performed at room temperature, and the organic boron compound can be obtained through separation and purification. The raw materials of the catalyst are cheap and easy to obtain, the catalyst is simple to prepare, easy to recover and reuse, high yield can be obtained only with low catalyst dosage, and the catalyst has huge industrial practical potential.

Organic boron compounds are provided. Formulations containing these organic boron compounds are also provided. OLEDs and related consumer products utilizing these organic boron compounds are further provided.

The invention relates to the technical field of battery materials, and discloses a battery diaphragm, a preparation method thereof and a battery. The preparation method of the battery diaphragm comprises the following steps: providing a dispersion liquid, dissolving an organosilicon compound and an organoboron compound in the dispersion liquid, the contents of the organosilicon compound and the organoboron compound in the dispersion liquid being 20-45% wt and 5-15% wt respectively; providing a base film, wherein the surface of the base film is provided with an alumina coating; immersing a base membrane into the dispersion liquid, enabling the dispersion liquid to be loaded on the surface of the base membrane, and then volatilizing a solvent in the dispersion liquid on the surface of the base membrane at 10-30 DEG C to obtain a first intermediate product diaphragm; placing the first intermediate diaphragm in a hydrochloric acid atmosphere to react for 12-48 hours to obtain a second intermediate diaphragm; and cleaning the second intermediate product diaphragm, and then drying to obtain the battery diaphragm. The diaphragm prepared by the preparation method can attract and capture HF and H2O, and the electrochemical performance of a battery can be improved when the diaphragm is applied to the battery.

The invention provides a nitrogen-containing organoboron compound as well as a preparation method and application thereof. The structure of the nitrogen-containing organic boron compound is shown as a formula (I) and / or a formula (II), in the formula (I) and the formula (II), y is selected from an integer between 0 and 4, and y R'groups are bonded with a benzene ring; r'groups are independently selected from H and C1-4 straight-chain or branched-chain alkyl groups, R groups are independently selected from C1-C20 straight-chain or branched-chain alkylene groups, and R1 groups are independently selected from H or C1-C30 straight-chain or branched-chain alkyl groups. The nitrogen-containing organic boron compound provided by the invention has excellent oxidation resistance, wear resistance and corrosion resistance.

The invention relates to the technical field of organic light-emitting materials, in particular to an organoboron compound containing a benzoheterocycle functional unit and two boron atoms and application of the organoboron compound. The organic boron compound has a structure as shown in a formula I or a formula II. A double-boron structure of a fused benzoheterocycle is adopted as a light emitting unit, on one hand, shearing vibration of molecules can be inhibited through the steric hindrance effect of benzoheterocycle, smaller half-peak width is obtained, HOMO and LUMO separation is achieved through the resonance effect of boron atoms and heteroatoms, and efficient TADF emission is obtained; on the other hand, the emission spectrum can be accurately adjusted by using the electron effect of the benzoheterocycle, the conjugation is expanded, the luminous efficiency is improved, and the organic electroluminescent device with narrower half-peak width and higher color purity is obtained. In addition, heavy atoms can be introduced by introducing benzoheterocycles, spin-orbit coupling is improved, and therefore the reverse intersystem crossing rate is increased, and efficiency roll-off is reduced. # imgabs0 #

The invention discloses a metallocene catalyst system suitable for a polyolefin elastomer, the metallocene catalyst system comprises metallocene catalyst solid particles and an antistatic agent, the metallocene catalyst solid particles comprise a metallocene compound, an organic boron compound, the antistatic agent and silica gel, and the structural formula of the metallocene compound is shown in the specification; the organic boron compound is N, N-dimethyl phenylammonium tetrakis (perfluorophenyl) borate. According to the metallocene catalyst system, expensive cocatalysts such as MAO or MMAO do not need to be used, the ethylene / alpha-olefin random copolymer (POE) can be prepared under the gas-phase polymerization condition, the consumption of organic boride of the cocatalysts is low, the number of connecting pieces and caking of polymer powder caused by static electricity is small, the particle morphology is good, and the method is suitable for industrial production. The preparation method has a good application prospect in vapor phase polyolefin elastomers, especially in ethylene / alpha-olefin random copolymers (POE).

Provided are: a carboxylation reactant that includes a silyl alkyl carbonate compound represented by a specific formula; a silyl alkyl carbonate compound that is represented by a specific formula; and a carboxylated compound production method in which an aromatic compound or an organic boron compound and the aforementioned carboxylation reactant are reacted in the presence of fluoride anions.

The invention relates to the technical field of preparation of cyclic carbonate, and discloses a method for synthesizing cyclic carbonate under the initiation of a mercaptan catalyst and cyclic carbonate.The method for synthesizing cyclic carbonate under the initiation of the mercaptan catalyst comprises the following steps that 1, an epoxy compound and a catalytic system are jointly added into a reaction kettle, the catalytic system comprises a thiol initiator and an organic boron compound; (2) replacing air in the high-pressure reaction kettle with COgas, then introducing carbon dioxide, and reacting under the conditions that the pressure is 1-3 MPa and the temperature is 60-120 DEG C; and (3) after the reaction is finished, cooling to room temperature, adding a quencher to stop the reaction, and then purifying and drying the product to obtain the cyclic carbonate. The mercaptan initiator can be introduced to be matched with non-metal organic boron to form a catalyst system, and compared with a traditional catalyst, the reaction efficiency is improved, the reaction time is shortened, and the problem of metal residues is reduced.

The invention discloses a polyolefin elastomer for a photovoltaic packaging adhesive film, which is obtained by gas-phase polymerization of ethylene and alpha-olefin under the action of metallocene catalyst solid particles and an antistatic agent, wherein the metallocene catalyst solid particles comprise a metallocene compound, an organic boron compound and silica gel and are prepared by a spray drying method, and the structural formula of the metallocene compound is shown in the specification. According to the polyolefin elastomer for the photovoltaic packaging adhesive film, expensive cocatalysts such as MAO or MMAO do not need to be used in the preparation process, the production cost is low, the volatile matter content of the prepared polyolefin elastomer is as low as 100 ppm or below, and generation of defective parts of a photovoltaic packaging adhesive film product in the processing process can be effectively reduced. And the consumption of the cocatalyst organic boride is low, the number of flakes and caking of the polymer powder caused by static electricity is small, the particle morphology is good, and the application prospect is good.

The invention relates to the technical field of organic light-emitting materials, in particular to an organoboron compound and a preparation method and application thereof. The organic boron compound has a structure as shown in a formula I or a formula II. The organic boron compound provided by the invention not only can be used for assembling an OLED device by an evaporation process, but also can be used for a light-emitting layer of the OLED device by a solution processing process to prepare the OLED device with high efficiency and long service life. The problems that an existing multiple resonance type blue light TADF material is low in efficiency and too high in doping concentration, and consequently spectrum red shift and emission peak widening are caused are solved or at least partially solved.

The invention provides a method for catalyzing homopolymerization of ethylene or copolymerization of ethylene and alpha-olefin. The method comprises the following step: carrying out polymerization reaction on ethylene or a mixture of ethylene and alpha-olefin in the presence of a catalyst composition, the catalyst composition comprises a non-metallocene catalyst as shown in a formula I and a cocatalyst as shown in a formula II. The organoboron compound shown in the formula II in the catalyst composition can significantly improve the activity of the non-metallocene catalyst shown in the formula I, and the molecular weight distribution of the obtained polymer is narrow. When the catalyst is used for catalyzing copolymerization of ethylene and other alpha-olefins, the insertion rate of other olefins is high. In addition, the borate cocatalyst is simple and easy to obtain, and the preparation cost is low. Therefore, the composition disclosed by the invention is relatively excellent in comprehensive performance.

A biological adhesive composition contains: a blended composition that contains a compound (A) having a polymerizable unsaturated bond and a polymer (B); and a polymerization initiator composition (C) that contains an organic boron compound. The biological adhesive composition has a glass transition temperature of less than 80°C obtained from measurement results by the method described in a specific "measurement conditions." The glass transition temperature is preferably from 10°C to less than 80°C. The compound (A) is preferably one or both of a compound represented by general formula (A)-1 and a compound having an amide structure and at least one polymerizable double bond.

The invention relates to an ethylene selective oligomerization catalyst containing a saturated aliphatic ring skeleton diphosphine ligand and preparation and application thereof, the catalyst comprises a ligand, a transition metal compound and an activator, the chemical structural formula of the ligand is shown in the specification, and groups R1 to R4 are respectively and independently hydrogen, alkyl, alkoxy, alkenyl or aromatic groups; n is a positive integer, and the value range is 3-5; the transition metal in the transition metal compound is selected from iron, cobalt, nickel, copper, titanium, vanadium, chromium, manganese, molybdenum, tungsten or palladium; the activating agent comprises an alkyl aluminum compound, an aluminoxane compound or an organic boron compound. Compared with the prior art, the catalyst provided by the invention has higher catalytic activity and 1-hexene / 1-octene total selectivity, is lower in polymer content, greatly reduces the production cost, can meet the requirements of industrial departments, and has important application value.

The invention provides a bonding modified MOF (Metal Organic Framework) derived ternary precursor, a positive electrode material, preparation of the positive electrode material and a battery. The MOF derived ternary precursor comprises an inner core and a modification layer coating the outer part of the inner core, the inner core comprises a NiCoMn-MOF material, and the modification layer comprises an organic silicon compound and / or an organic boron compound; the modification layer and the inner core are in bonding connection through a Si-O bond and / or a B-O bond. In the MOF-derived ternary precursor, the modification layer and the core are bonded and connected through a Si-O bond and / or a B-O bond, so that the structural stability of the MOF-derived ternary precursor and the ternary positive electrode material is improved, and a coating layer finally formed by the modification layer also improves the interface performance of the ternary positive electrode material; the existence of the modification layer also reduces the residual alkali on the surface of the ternary positive electrode material prepared from the MOF-derived ternary precursor.

The application discloses branched polyethylene with adjustable and controllable branching degree and a preparation method thereof. The branched polyethylene has a crystallinity less than 25%, a weight average molecular weight between 100,000 g / mol and 1,200,000 g / mol, a molecular weight distribution between 1.5 and 3.5, and an adjustable and controllable branching degree between 60 / 1000C and 200 / 1000C. In the preparation method, an alpha-diimine nickel metal complex is mixed with at least one organic boron compound selected from aryl boron, alkyl boron and borate, and then is contacted with at least one organic aluminum compound selected from alkyl aluminum, aluminoxane and halogenated alkyl aluminum to perform solution polymerization of ethylene. The polymerization method has the advantages of high polymerization activity, no use of a second polymerization monomer, simple process and low cost, and is suitable for industrial production.