14 results about "Organic Boron Compounds" patented technology

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.

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.

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 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 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 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.

The application provides an HDPE copolymer and a preparation method and application thereof. The HDPE copolymer is obtained by using ethylene and alpha-olefin as monomers and using catalyst component A and catalyst component B to catalyze polymerization of the monomers; the catalyst component A comprises a reaction product of a magnesium compound, an organic boron compound, a titanium compound and a vanadium compound; and the catalyst B comprises an organic aluminum compound. The preparation method of the HDPE copolymer comprises the following steps: adding a second organic solvent, the catalyst component A and the catalyst component B into a reactor, introducing ethylene, performing a first polymerization reaction to obtain a polyethylene homopolymer; introducing ethylene and alpha-olefin into the reactor, performing a second polymerization reaction to obtain a copolymer intermediate; introducing ethylene and alpha-olefin into the reactor, performing a third polymerization reaction to obtain the multimodal structure HDPE copolymer. The application further provides a polyethylene copolymer pipe prepared from the HDPE copolymer.

The application relates to the field of organic chemistry and specifically discloses a synthesis method of berberine hydrochloride. The synthesis method of the berberine hydrochloride comprises the following steps: S1, bromo-piperonyl ethylamine and o-veratraldehyde are subjected to reductive amination to synthesize an intermediate II; S2, the intermediate II is subjected to Suzuki coupling reaction with an organic boron compound under the catalysis of a palladium metal organic compound to synthesize an intermediate III; S3, the intermediate III is subjected to amino chlorination with an organic chloride to synthesize an intermediate IV; S4, the intermediate IV is subjected to intramolecular atom transfer radical addition and intramolecular Friedel-Crafts alkylation tandem reaction in a mixed solvent under the catalysis of a copper catalyst to synthesize an intermediate V; and S5, the intermediate V is subjected to oxidative aromatization reaction with iodine under the catalysis of a base to synthesize the berberine hydrochloride. The synthesis process is simpler, the reaction condition is easier to control, the yield is high, and the method is suitable for industrial production.