8 results about "Trihalide" patented technology

The invention belongs to the technical field of olefin polymerization, and discloses a catalyst component for olefin polymerization reaction, a preparation method of the catalyst component, a catalyst and application of the catalyst component. A mode I comprises the following steps: (1) reacting a magnesium-containing compound, an aluminum-containing substance, an organic epoxy compound and an organic phosphorus compound to obtain a magnesium-containing reaction solution; the aluminum-containing substance is metal aluminum and / or aluminum trihalide; (2) reacting the magnesium-containing reaction liquid with an acyl halide compound; reacting with a first titanium-containing compound to obtain a catalyst component; optionally adding a first electron donor compound before and / or after the reaction with the first titanium-containing compound, and reacting; and (3) reacting the catalyst component obtained in the step (2) with a second titanium-containing compound to obtain the catalyst component, and optionally adding a second electron donor compound before and / or after the reaction with the second titanium-containing compound, and reacting. The polymer powder obtained by adopting the catalyst provided by the invention has obviously improved bulk density.

The invention discloses a preparation method of trialkyl boron, and belongs to the technical field of organic boron compounds. According to the preparation method, an alkyl aluminum compound or an alkyl zinc compound is taken as a first raw material, a boron-containing compound is taken as a second raw material, and trialkyl boron is synthesized through metal replacement reaction; the boron-containing compound is selected from boron trihalide or borate. A single-step metal replacement reaction path of an alkyl aluminum compound or an alkyl zinc compound and a boron-containing compound is adopted, so that the three defects of long synthesis route, high energy consumption and more byproducts in the prior art are remarkably overcome. Compared with a high-temperature and high-pressure seed method, the method has the advantages that the high yield is realized under the mild conditions of normal pressure and less than or equal to 120 DEG C, the energy is saved, and the high-pressure risk is avoided; compared with a multi-step organic metal method, the atom utilization rate is greatly increased, byproducts are reduced, and resource utilization can be achieved.

The invention relates to a thermosetting epoxy resin composition comprising an epoxy resin, a dihydrazide curing agent, a boron trihalide-amine complex, a substituted urea and at least one toughness improver. The composition, when cured at low curing temperatures, is characterized by good lap shear values combined with good impact peel and T-peel performance. The epoxy resin composition is especially suitable for use as a body adhesive.

The invention provides a method for preparing aromatic nitrile from an alkyl-substituted phenolic compound, and belongs to the technical field of compound synthesis, the method comprises the following steps: dissolving the alkyl-substituted phenolic compound in a nitrile solvent, adding phosphorus trihalide, and stirring to obtain a first solution; dissolving nickel salt and zinc salt in a nitrile solvent, stirring, adding cyanide, stirring for the second time, and dehydrating to obtain a second dehydrated solution; and under the condition of introducing ammonia gas, adding the second dehydration solution and a reaction auxiliary agent into the first solution, and carrying out hydrocyanation reaction to prepare the aromatic nitrile compound. According to the method, the alkyl substituted phenolic compound is used as a raw material, efficient synthesis of aromatic nitrile is achieved through cooperation of all the steps, the phenolic compound in the industrial waste liquid is converted into a high-value chemical, and a new technical path is provided for treatment and resource utilization of the phenolic waste liquid.

The present disclosure relates to processes for the fluorination of molecules. One aspect provides a process for incorporating a fluorine atom into a molecule, said process comprising converting a compound of formula X-SG into a compound of formula X-F, wherein G is an optionally substituted C1-C6 alkyl group, an optionally substituted aryl group, or an optionally substituted heteroaryl group, and X is an organic group; and wherein the SG group is attached to a secondary or tertiary carbon atom in the organic group X; said process comprising treating said compound of formula X-SG with (i) an activator compound selected from the group consisting of N-halosuccinimides, N-halobenzenesulfonimides, N-halobenzenesulfonamides, dialkylaminodihalosulfinium salts, heterocyclylaminodihalosulfinium salts, dialkylaminosulfur trihalides, XeF2, difluoroiodotoluene, di- and tri-bromoisocyanuric acids, bromine, chlorine, hypervalent iodine compounds with I2; and other sources of Br+, Cl+, F+, I+, bromonium, iodonium, or chloronium; and (ii) a source of fluoride. Uses of the process in the preparation of various fluorinated molecules as well as uses of certain compounds as intermediates in the processes of the present disclosure are also provided.

The invention relates to the technical field of preparation of aluminum alkyl, in particular to a preparation method of aluminum alkyl, and aims to solve the problems that flammable and explosive hydrogen needs to be used, a large amount of time and material equipment need to be consumed, the product yield is low due to complex reaction, and the cost is low in the prior art in the preparation of aluminum alkyl. And the aluminum powder is difficult to separate from the metal salt generated by the reaction, and the like. The invention relates to a preparation method of aluminum alkyl, which comprises the following step of: reacting alkali metal hydride serving as a hydrogen source with aluminum trihalide and olefin to prepare the aluminum alkyl.

A method of manufacturing silicon nano-powders and a manufacturing equipment implementing such method. The method according to the invention utilizes a plurality of aluminum powders to react with a silicon tetrahalide into a plurality of silicon nano-powders and an aluminum trihalide to obtain the silicon nano-powders.

The application discloses a preparation method of 4-chloropyrrolopyrimidine and belongs to the technical field of synthesis of medical intermediates. 7H-pyrrolo[2,3-D]pyrimidine is used as raw material to react with deprotonation base and boron trihalide, then selective oxidation is carried out in the presence of hydrogen peroxide, no purification is carried out, then the reaction is carried out with alkali, 7H-pyrrolo[2,3-D]pyrimidine-3-oxide is generated, finally, the reaction is carried out with phosphorus oxychloride in the presence of lithium chloride, and 4-chloropyrrolopyrimidine is obtained. In the application, 7H-pyrrolo[2,3-D]pyrimidine is used as raw material, boron trihalide is used to protect the pyrrole and the nitrogen atom at the ortho position, the oxidation yield of the target nitrogen atom can be greatly improved, the generation of by-products is reduced, the operation is simple, the overall yield is high, and the application provides a route reference for synthesizing the compounds.