50 results about "Haloalkene" patented technology

The method for producing a halogenated alkene converts a halogenated alkane having 2 to 4 carbon atoms and containing a fluorine atom into a halogenated alkene having 2 to 4 carbon atoms and containing a fluorine atom in the gas phase in the presence of silicon oxide and an alkali metal element.

The invention relates to the technical field of energy storage safety, and particularly discloses flame-retardant cooling liquid, a preparation method of the flame-retardant cooling liquid, an immersed energy storage device, a data center and electric equipment. According to the present invention, the base oil is at least one of the liquid halogenated alkane containing 2-6 carbon atoms, the liquid halogenated olefin, the liquid halogenated ketone and the liquid halogenated cycloalkane containing 3-6 carbon atoms, such that the high biodegradability of the base oil is maintained, the system viscosity is effectively reduced, the heat dissipation performance is improved, the insulating property of the base oil is significantly improved, and the service life of the base oil is prolonged. Meanwhile, the flame retardance is further enhanced. Therefore, the heat management efficiency of the cooling liquid is remarkably improved while environmental protection and safety are considered, and the cooling liquid has a good application prospect.

The present invention provides: a supercritical processing composition that contains a halogenated olefin having two carbon atoms and carbon dioxide, wherein the content of the carbon dioxide is 76.4 mass% or more with respect to the total amount of the halogenated olefin having two carbon atoms and the carbon dioxide; a supercritical processing method and a supercritical processing device using the same; and a container containing the supercritical processing composition.

The application discloses a preparation method of an indoline compound based on organic electrosynthesis, and belongs to the technical field of pharmaceutical chemical engineering and related chemistry. The method uses simple arylamine and halogenated olefin as raw materials, and prepares the indoline compound under the electrolysis of an electrode, so that green and efficient synthesis of the indoline compound is realized. The method has the advantages of low cost, high selectivity, mild reaction condition, good functional group compatibility, wide substrate range and environmental friendliness. The indoline compound is an important organic synthesis intermediate, and has a very wide application in the fields of fine chemical engineering and pharmacy. The preparation method has great application value and social and economic benefits.

The invention provides a preparation method of polar polyolefin, and belongs to the technical field of polyolefin. The preparation method comprises the following steps: in an inert atmosphere, under the action of a catalyst and a cocatalyst, copolymerizing C2-C6 olefin and an alkylated polar monomer in an organic solvent to prepare polar polyolefin, wherein the alkylated polar monomer is prepared by the following steps: dissolving an alkylating reagent in an organic solvent, adding a polar monomer, and mixing and stirring to obtain the alkylated polar monomer; the polar monomer comprises at least one of halogenated alpha-olefin, alpha-olefine acid, alpha-enol, alpha-olefine aldehyde, alpha-olefine ester and alpha-olefine ketone. The polar monomer is pre-protected by adding the alkylating reagent, so that effective copolymerization of C2-C6 olefin and the polar monomer is realized, and the performance of polyolefin is favorably improved.

Impurities are removed from a fluoroolefin having a structure of ═CF2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains haloalkene, haloalkane, and / or haloalkyne impurities.Provided are: a method of purifying a fluoroolefin having a structure of ═CF2 or ═CHF, comprising bringing a fluoroolefin having a structure of ═CF2 or ═CHF that has been obtained by a dehydrohalogenation reaction and that contains at least one of haloalkane, haloalkene, and / or haloalkyne impurities into contact with a solid adsorbent to remove the impurities through adsorption; a high-purity fluoroolefin; and a production method therefor.

The present invention belongs to the technical field of dienyldichlorosilane, and specifically relates to a method for preparing dienyldichlorosilane. The preparation method comprises reacting a diene and trichlorosilane in the presence of a first catalyst to obtain an alkenyltrichlorosilane; and reacting the alkenyltrichlorosilane with a haloolefin in the presence of a second catalyst to obtain the dienyldichlorosilane. The dienyldichlorosilane produced by this method has a high synthetic yield and a considerable yield, and has application value for large-scale synthesis.

The invention discloses a functionalized ionic liquid and a preparation method thereof, and belongs to the field of ionic liquids. The preparation method of the functionalized ionic liquid comprises the following steps: mixing alkyl imidazole, halogenated olefin, a polymerization inhibitor and a reaction solvent, carrying out heating reaction, and carrying out external evaporation, extraction and drying on a crude product to obtain the 1-alkenyl-3-alkyl imidazole halide ionic liquid, the anion of the 1-alkenyl-3-alkyl imidazole halide ionic liquid exchanges with other anions, so that the 1-alkenyl-3-alkyl imidazole ionic liquid is prepared. By improving the reaction process and post-treatment conditions, various functionalized ionic liquids are obtained with high yield and high purity.

A polyurethane insulation foam composition is disclosed herein. The polyurethane insulation foam comprises: (i) an aromatic isocyanate compound; (ii) an isocyanate reactive compound; (iii) water; (iv) a tertiary amine compound; (v) a hydrophilic carboxylic acid compound; (vi) a halogenated olefin compound; (vii) a stabilizing compound, and (vii) optionally, other additives.

The invention belongs to the technical field of photovoltaic materials, and particularly relates to a preparation method and application of a C60 material containing tetrazole olefinic bonds. The preparation method of the C60 material containing the tetrazole olefinic bond comprises the following steps: (1) mixing tetrazole and halogenated olefin to obtain tetrazolyl halogenated olefin; and (2) mixing halogenated C60 and tetrazolyl halogenated olefin, and carrying out Sonogashira coupling reaction to obtain the C60 material containing the tetrazolyl olefin bond. The beneficial effects of the invention are that the C60 material containing tetrazole olefinic bonds is used as the electron transport layer, and in the P2 and P3 laser scribing process, dynamically broken tetrazole halide can be bonded with Pb ions in perovskite, thereby effectively self-repairing possible damage of laser scribing to the perovskite thin film, and improving the performance of the perovskite thin film. A laser scribing area is well protected; meanwhile, non-radiative recombination of a perovskite electron transmission interface can be effectively reduced, and the efficiency and the stability of a device are improved.

The invention discloses a method for improving the stability of a catalyst for producing halogenated propylene, which comprises the following steps: taking chlorofluoropropane as a raw material, and carrying out dehydrochlorination reaction under the action of an activated carbon-based catalyst to obtain halogenated propylene, the activated carbon-based catalyst is obtained by roasting and constant-temperature ultrasonic pickling of activated carbon in sequence; the step of constant-temperature ultrasonic pickling comprises the steps of acid liquor preparation, constant-temperature ultrasonic dipping, washing and drying. The active carbon-based catalyst is used in the production process of halogenated propylene, can reduce the reaction temperature, improve the stability and the service life of the catalyst, keeps excellent reaction conversion rate and selectivity, and is very suitable for industrial application.

The invention belongs to the technical field of medical analysis, and discloses a pyrrole acyl piperidylamine compound and a method for detecting genotoxic impurities of the pyrrole acyl piperidylamine compound. Specifically, the invention relates to analysis and limit determination of four genotoxic impurities in a pyrroloyl piperidylamine new drug (code name compound 1) for resisting drug-resistant bacterium infection. According to the method, a liquid chromatography-mass spectrometry technology is adopted, octadecyl bonded silica gel is used as a stationary phase, a mixed solution of methanol and an ammonium acetate acidic aqueous solution is used as a mobile phase, and triple quadrupole mass spectrometry is used as a detector for analysis and determination. The genotoxic impurities comprise halogenated alkanes, halogenated olefins, carbamates and azo oxides. The method has relatively good specificity and sensitivity, can be used for accurately and quantitatively determining the genotoxic impurities, and is simple and rapid to operate. The method provides a method basis for quality control of the compound 1, and has important application value for quality control and safety guarantee in a new drug research and development process.

A method for producing haloolefins, wherein, in the presence of silicon oxide and alkali metal elements, haloalkanes containing fluorine atoms and having 2 to 4 carbon atoms are converted into haloolefins containing fluorine atoms and having 2 to 4 carbon atoms in the gas phase.

The invention relates to the technical field of medicine synthesis, in particular to a preparation method of an alkyl-substituted diacid compound and a product. The preparation method comprises the following steps: with a carboxylic ester compound and halogenated olefin as raw materials, carrying out a reaction in the presence of a non-nucleophilic strong base to obtain an alkene ester compound; hydrolyzing the olefine ester compound under an alkaline condition to obtain an olefine acid compound; and carrying out oxidation reaction on the olefine acid compound under the action of sulfuric acid and potassium permanganate to obtain the alkyl-substituted diacid compound. The synthetic route provided by the invention has the advantages of short steps, simple operation, low preparation cost, easily available raw materials, no need of using an expensive catalyst, high reaction efficiency and no need of using a chromatographic column for separation and purification, and is suitable for industrial application. The alkyl-substituted diacid compound product prepared by the method is high in purity, few in impurities and easy to separate.

The present application provides a structure-controllable polydimethylsiloxane polyɛ-caprolactone block polymer diol and a preparation method thereof. The method comprises the following steps: S1: reacting a diol and ɛ-caprolactone under the catalysis of a first catalyst to obtain a polyɛ-caprolactone diol; S2: reacting the polyɛ-caprolactone diol and a haloolefin under the catalysis of a second catalyst to obtain a double-terminal olefin-based polyɛ-caprolactone; S3: reacting the double-terminal olefin-based polyɛ-caprolactone with a double-terminal hydrogen polydimethylsiloxane under the catalysis of a third catalyst to obtain a double-terminal hydrogen polydimethylsiloxane-grafted polyɛ-caprolactone; and S4: reacting the double-terminal hydrogen polydimethylsiloxane-grafted polyɛ-caprolactone with an enol compound under the catalysis of a fourth catalyst to obtain a polydimethylsiloxane polyɛ-caprolactone block polymer diol. The block polymer diol obtained by this preparation method can be used to improve the mechanical properties and durability of polymer materials.

The present invention is directed to a process for producing a compound of formula (I): (R 1 ) y (R 2 O) 3-y SiCH2CHR 3 CR 4 R 5 X (I) (a) Halogenated olefins; (b) alkoxysilanes; (c) a catalytically effective amount of an iridium-containing catalyst; and (d) reacting a reaction-promoting effective amount of peroxycarboxylic acid to produce the product of formula (I).

The invention discloses a preparation method of hydrofluoroolefin, and the preparation method comprises the following steps: in a polar aprotic solvent, halogenated olefin with a general formula of Rf1CX = CH2 and halogenated alkane with a general formula of Rf2Y react under the action of a reducing agent and a catalyst to obtain hydrofluoroolefin with a general formula (I), Rf1 and Rf2 are independently selected from C1-C5 fluoroalkanes, and Rf2 and Rf3 are independently selected from C1-C5 fluoroalkanes. The fluoroalkane contains at least one of O, N, Cl and H; x is selected from at least one of chlorine, bromine and iodine; y is selected from at least one of chlorine, bromine and iodine; the reducing agent is selected from at least one of metal copper, metal zinc or hydrazine, and the catalyst is selected from at least one of monovalent inorganic salt or monovalent organic salt of copper. The preparation method is simple in process, low in cost, few in three wastes, high in product yield and suitable for industrial production.

The invention discloses a synthesis method and application of a 2,3-dicyanohydroquinone derivative. The compound uses 2,3-dicyanohydroquinone as the starting material for the reaction, and is subjected to a nucleophilic substitution reaction with a halogenated olefin or an alkyne to obtain the target product. The synthetic raw materials of the synthetic method are cheap and readily available, and the synthetic process is relatively simple. The 2,3-dicyanohydroquinone derivative has an olefin unsaturated alkoxy group and a cyano group on its structural benzene ring. When applied to a lithium-ion battery, a stable SEI film can be effectively formed during charge and discharge. In addition, the cyano group may form a relatively effective protective film on the positive electrode surface during the battery charge and discharge process, covering its active site, thereby reducing the reactivity of the positive electrode to the electrolyte, and reacting with HF acid at high temperature to reduce the damage of HF acid to the electrode surface and the current collector, thereby improving the high and low temperature performance and cycle performance of the battery.

The application discloses an olefin-based tertiary amine monomer for a crosslinked anion exchange membrane and a preparation method and application thereof. The monomer structure is shown in a general formula: (R a)(R b)N-R c, wherein R a and R b are each independently selected from an alkyl group, an aryl group, a heterocyclic group or an alkenyl group, R c is a group containing at least one alkenyl group, and at least two groups of R a, R b and R c each contain at least one alkenyl group. The preparation method comprises the following steps: halogenating a tertiary alcohol amine to obtain a halogenated tertiary amine, and then reacting the halogenated tertiary amine with a Grignard reagent prepared from a halogenated olefin to obtain the target monomer. The monomer contains multiple alkenyl groups and tertiary amine groups in the molecule, can be used as a precursor with polymerizable and ionizable functions, and is used for preparing an anion exchange membrane with a three-dimensional network crosslinked structure. The raw material is easy to obtain, the synthesis route is simple, the product structure is adjustable, the prepared anion exchange membrane has high ionic conductivity, excellent dimensional stability and alkali resistance, and is suitable for alkaline fuel cells, water electrolysis hydrogen production and other electrochemical devices.

To obtain a halogenated alkene compound and a halogenated alkyne compound in high conversion and high selectivity.SOLUTION: Any one of the following methods (1) to (4) is employed: (1) CX1X2X3CHX4CFHCX5X6X7 wherein X1, X2, X3, X4, X5, X6, and X7 are identical or different and are halogen atoms. (2) CX1X2X3CX4 = CHCX5X6X7 [X1, X2, X3, X4, X5, X6, and X7 are as defined above]. (3) CHX8A1CHX9A2 wherein A1 and A2 are each independently a halogen atom or a perfluoroalkyl group. X8 and X9 are identical to or different from each other and each represent a halogen atom; (4) CX8A1 = CHA2 [wherein A1, A2 and X8 are as defined above] is subjected to a dehydrohalogenation reaction in the gas phase in the presence of a catalyst. Is subjected to a dehydrohalogenation reaction in the presence of a catalyst.SELECTED DRAWING: None

A polyurethane insulation foam composition is disclosed herein. The polyurethane insulation foam comprises: (i) an aromatic isocyanate compound; (ii) an isocyanate reactive compound; (iii) water; (iv) a tertiary amine compound; (v) a hydrophilic carboxylic acid compound; (vi) a halogenated olefin compound; (vii) a stabilizing compound, and (vii) optionally, other additives.

Methods and systems are provided for recycling waste liquid and solid materials using or including but not limited to halogenated olefin liquid refrigerants, solvents, immersion fluids, and foam formation. Also provided are recovered compositions and components that meet the quality of the AHRI7002019 industry standard.

The invention discloses a resin composition with high bonding strength as well as a preparation method and application thereof. The resin composition comprises (a) one or combination of epoxy resin and photosensitive resin; (b) the curing agent has a structure as shown in a general formula; and (c) a curing accelerator: epoxy resin corresponds to amine, and a photoinitiator needs to be added when photosensitive resin is contained. The preparation of the curing agent is realized through five-step reaction of substitution of dihydroxy diphenylalkyl ketone and halogenated olefin, substituent group rearrangement, secondary substitution, thioacetic acid addition and hydrolysis. The composition has the characteristics of rapid gelling, high bonding strength, excellent chemical resistance, strong hydrophobicity and the like, and is suitable for bonding, sealing or coating materials of electronic components.

The invention discloses a synthetic method of perfluoroalkoxy methylene vinyl ether, which comprises the following steps of: 1, reacting alkyl fluoroformate with halogenated olefin under the action of an auxiliary agent to generate halogenated alkyl ether, and performing dehalogenation reaction to generate perfluoroalkoxy methylene vinyl ether; the method II comprises the following steps: reacting alkyl fluoroformate with hexafluoropropylene oxide under the action of an auxiliary agent to generate alkoxy propionyl fluoride, and carrying out salification and decarboxylation reaction to generate perfluoroalkoxy methylene vinyl ether (RfOCF2OCF = CF2); the auxiliary agent is metal fluoride or fluoro quaternary ammonium salt. In the first method and the second method, the alkyl fluoroformate and the halogenated olefin or the hexafluoropropylene oxide need to react under the action of the aid (metal fluoride or fluoro quaternary ammonium salt), so that the safety problem caused by direct use of fluorine gas is avoided, and the conversion rate of the trifluoromethyl fluoroformate and the yield and selectivity of the product can be improved.

The invention provides an application of halogenated olefin and a polyurethane foam composition, and the application of halogenated olefin in a low-temperature foaming agent, and the halogenated olefin is selected from one or more than two of cis-1, 2-difluoroethylene, 2, 3, 3-trifluoropropene, 1, 3, 3-trifluoropropene and / or 3, 3-difluoropropene. The present application also provides a polyurethane foam composition comprising a composite polyol, a low temperature foaming agent, a stabilizer and a catalyst wherein the low temperature foaming agent is selected from one or more than two of cis-1, 2-difluoroethylene, 2, 3, 3-trifluoropropene, 1, 3, 3-trifluoropropene and 3, 3-difluoropropene, and the halogenated olefin has a zero ODP value and a low GWP value, and also has a low GWP value in addition to a zero ODP value and a low GWP value. Meanwhile, when polyurethane is prepared, the core density and the heat conductivity coefficient of the polyurethane foam can also be reduced.

A method for producing a halogenated alkene, the method comprising converting a halogenated alkane represented by formula (1) into a halogenated alkene represented by formula (2) and a compound represented by formula (3) in a gas phase in the presence of silicon oxide and an alkali metal element. R1-R3 each independently represent a hydrogen atom, a fluorine atom, a methyl group, a fluorinated methyl group, an ethyl group, or a fluorinated ethyl group, and the number of carbon atoms in each of formulae (1)-(3) is 2-4.

The invention provides structure-controllable polydimethylsiloxane poly-caprolactone block polymer dihydric alcohol and a preparation method thereof.The method comprises the following steps that S1, dihydric alcohol and-caprolactone react under catalysis of a first catalyst, and poly-caprolactone dihydric alcohol is obtained; s2, carrying out a reaction on the poly-caprolactone diol and halogenated olefin under the catalysis of a second catalyst to obtain double-terminal olefin poly-caprolactone; s3, the double-end alkylene poly-caprolactone and double-end hydrogen polydimethylsiloxane are subjected to a reaction under the catalysis of a third catalyst, and double-end hydrogen polydimethylsiloxane grafted poly-caprolactone is obtained; and S4, carrying out a reaction on the double-hydrogen-terminated polydimethylsiloxane grafted poly-caprolactone and an enol compound under the catalysis of a fourth catalyst, so as to obtain the polydimethylsiloxane poly-caprolactone block polymer dihydric alcohol. The block polymer dihydric alcohol obtained by the preparation method can be used for improving the mechanical property and durability of a high polymer material.

The invention relates to the technical field of fluorine chemical industry, in particular to a preparation method of perfluoromethoxy methylene vinyl ether.The preparation method comprises the following steps that S1, perfluoroolefin serves as a raw material to be subjected to an ozone cracking reaction, and trifluoromethyl fluoroformate is obtained through separation and purification; s2) enabling the trifluoromethyl fluoroformate to react with fluorine gas and halogenated olefin to generate fluorine halogen ether; and S3) carrying out dehalogenation or hydrogen generation on the fluorine halide ether to obtain the perfluoromethoxy methylene vinyl ether. The technical scheme provided by the invention has the following advantages: 1) the raw material cost is low, the main raw material for preparing trifluoromethyl fluoroformate is fluorine-containing olefin, and industrialization is realized; the perfluoromethoxy methylene vinyl ether has the advantages of simple preparation process, mild process conditions, simplicity, safety, reliability, good reaction selectivity, easy product separation, high yield, low cost and suitableness for industrial scale-up production.

A polyurethane insulation foam composition is disclosed herein. The polyurethane insulation foam comprises: (i) an aromatic isocyanate compound; (ii) an isocyanate reactive compound; (iii) water; (iv) a tertiary amine compound; (v) a hydrophilic carboxylic acid compound; (vi) a halogenated olefin compound; (vii) a stabilizing compound, and (vii) optionally, other additives.

The invention belongs to the technical field of organic synthetic chemistry, and particularly relates to a C2 symmetric N-N axial chiral biindolyl diphosphine ligand as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting 2-indolyl amino aryl benzaldehyde or 2-indolyl amino aryl benzophenone with carbon tetrahalide to generate a 1, 1-dihalogenated olefin compound 3; carrying out cyclization reaction on the 1, 1-dihalogenated olefin compound 3 under the action of transition metal to obtain a biindole compound 4; reacting the biindole halide 4 with diaryl phosphorus halide in the presence of alkyl metal to generate a biindole diaryl phosphine compound 5; and reacting the biindolyl diaryl phosphine compound 5 with diaryl phosphorus halide in the presence of alkyl metal to generate the compound as shown in the general formula I. The optical pure chiral diphosphine ligand can be obtained through kinetic resolution, chiral preparative column separation and other methods. The ligand is simple in framework, convenient to synthesize and easy to transform, can be applied to asymmetric reactions catalyzed by various metals, and has very high reaction activity and stereoselectivity.