19 results about "Thiocarbonate" patented technology

The invention belongs to the technical field of insecticides, and particularly relates to a synthetic method of a hexythiazox intermediate, which comprises the following four steps: S1, preparing erythro-1-p-chlorophenyl-2-amino-1-bromo-propane; s2, preparation of the erythro-1-p-chlorophenyl-2-aminopropanethiol, and preparation of the erythro-1-p-chlorophenyl-2-aminopropanethiol; s3, preparation of the trans-1-p-chlorophenyl-2-amino-propyl-O-isopropyl thiocarbonate hydrochloride, and preparation of the trans-1-p-chlorophenyl-2-amino-propyl-O-isopropyl thiocarbonate hydrochloride; and S4, preparation of a hexythiazox intermediate, namely, trans-5-(4-chlorphenyl)-4-methyl thiazolidone. According to the invention, the use of highly toxic carbon disulfide, corrosive chlorosulfonic acid, carcinogenic benzyl chloride and other high-risk reagents is completely abandoned, the operation risk is reduced, no malodorous gas is discharged, the occupational health and safety of operators and the environment are fundamentally guaranteed, meanwhile, the generation of acidic wastewater and sulfur-containing hazardous waste is solved, and the production cost is reduced. And a green chemical atom economy principle is met.

This invention discloses a copper ion scavenging agent suitable for a wide pH range, its preparation method, and its application. The scavenging agent comprises the following components by mass: 10-30 parts trithiocarbonate, 5-20 parts N,N-dimethylaminodithiocarbamate, and 1-5 parts sodium citrate. The preparation method is as follows: (1) Add water to a sodium citrate solution and stir to prepare a buffer solution A; (2) Add trithiocarbonate and N,N-dimethylaminodithiocarbamate to buffer solution A, stir until completely dissolved, and filter to obtain the final product. This invention has the advantages of a wider pH range, copper removal effect that varies with water quality, stable copper removal effect, fast reaction speed, and rapid floc settling. After treatment, the concentration of each copper ion is less than 0.1 mg / L, the iron content is less than 0.0001%, and the lead content is less than 0.0001%, meeting the environmental emission requirements.

The invention discloses flame-retardant decorative paper and a preparation method thereof, and relates to the technical field of preparation of decorative materials. The preparation method comprises the following steps: reacting (4-fluorophenyl)-phosphoric acid with dipentaerythritol, introducing phosphorus and fluorine to a molecular chain of the dipentaerythritol, carrying out ring opening with epoxy fluoropropane to obtain branched polyol containing phosphorus and fluorine, reacting the branched polyol containing phosphorus with phenyl thiochloroformate to generate thiocarbonate bonds, reacting with primary amino groups of 1, 2-propane diamine, and carrying out condensation reaction on the primary amino groups of the 1, 2-propane diamine to obtain the high-temperature-resistant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant. The preparation method comprises the following steps: preparing phosphorus-containing polyhydric alcohol, preparing amino-terminated branched polyether containing phosphorus and sulfur, reacting amino with aldehyde group of 3-fluoropyridine-2-aldehyde to generate an imine bond, adding DOPO to obtain a DOPO derivative containing phosphorus, nitrogen, sulfur and fluorine, reacting branched phosphorus-containing polyhydric alcohol, the DOPO derivative and isocyanate to obtain a polyurethane glue solution containing phosphorus, nitrogen, sulfur and fluorine, and preparing the polyurethane glue solution containing phosphorus, nitrogen, sulfur and fluorine from the polyurethane glue solution containing phosphorus, nitrogen, sulfur and fluorine. And the flame retardance and hydrophobicity of the decorative paper are comprehensively improved by utilizing the synergistic effect of phosphorus, nitrogen, sulfur and fluorine.

The invention belongs to the technical field of fluorescent probes, and discloses a thiocarbonate-based hydrogen polysulfide fluorescent probe, a preparation method and application, the fluorescent probe can respond to H2Sn with high selectivity and high sensitivity, can resist thiol interference, has obviously increased fluorescence intensity in the presence of H2Sn, can be used for qualitative and quantitative detection of H2Sn, and can be applied to detection of H2Sn. The method is successfully applied to living cell and type 2 diabetes mouse imaging, a feasible means is provided for explaining H2Sn participating in physiological and pathological effects in vivo, and a valuable tool is provided for promoting H2Sn biological research and guiding future probe development.

The invention relates to the technical field of high polymer materials, and discloses an organic silicon-fluorine polymer / nano inorganic particle composite coating and a preparation method thereof. The organic silicon-fluorine polymer / nano inorganic particle composite coating is prepared by adopting a solution polymerization system and applying a reversible addition fragmentation chain transfer interfacial polymerization technology. According to the invention, the inorganic nanoparticles are subjected to surface modification, an R group on thiocarbonate is grafted to the surfaces of the inorganic nanoparticles, and on the basis, a reversible addition fragmentation chain transfer interfacial polymerization technology is adopted to construct the composite coating with a regular core-shell structure in which the inorganic nanoparticles are coated with an organic silicon-fluorine polymer. The organic silicon fluorine polymer / nano inorganic particle composite coating with a uniform chemical cross-linked network structure is formed through a subsequent thermal cross-linking reaction after coating, can be widely applied to surface protection of precise metal accessory materials, shows excellent adhesive force, mechanical properties, stain resistance, corrosion resistance and the like, and has a wide application prospect.

The invention discloses a preparation method of a composite enhanced collecting agent and application of the composite enhanced collecting agent in copper ore flotation, and the preparation method comprises the following steps: mixing an amido dithiocarbonate compound and xanthate in proportion, adding water to prepare a solution, and then adding a certain amount of regulator into the solution to obtain an enhanced flotation agent. The enhanced flotation agent not only has excellent collecting property, but also has better diffusion and dispersity, can obviously improve the floatability of the copper ore and improve the selectivity and the recovery rate of the copper ore, and has wide application prospects.

The invention relates to a synthesis method of an S-deuterated methyl-N-aryl formyl-N-tert-butyl thioformate compound, which is characterized in that aromatic formic acid, tert-butyl isocyanate and CD3SSO3Na are subjected to cascade reaction in an organic solvent under the air condition to obtain the S-deuterated methyl-N-aryl formyl-N-tert-butyl thioformate compound. The method has the advantages of simple reaction conditions and high product yield and purity, develops a new synthesis route and method for the preparation of the S-deuterated methyl-N-aryl formyl-N-tert-butyl thioformate compound, and has good application potential and research value.

Alkylsulfenyl thiocarbonates capable of releasing hydropersulfides (RSSH) and carbonyl sulfide (COS) under physiological conditions and their use for treating or preventing disorders, diseases, or conditions associated with oxidative stress, impaired Fe—S cluster biosynthesis, including Friedreich's Ataxia, and anthracycline-induced cardiotoxicity, including cardiomyopathy and heart failure, are described.

The invention belongs to the field of flotation, and particularly relates to a dithiocarbonate collecting agent, a preparation method of the dithiocarbonate collecting agent and application of the dithiocarbonate collecting agent in metal ore flotation. According to the collecting agent, molecular association can be promoted through intermolecular water bridging hydrogen bonds and the pi-pi accumulation effect, molecular volatilization is inhibited, and the peculiar foul smell of traditional xanthate is weakened or even eliminated from the source; meanwhile, introduction of N atoms with high electronegativity and pi-rich electron benzene rings in the molecular structure can synergistically regulate and control the electronic characteristics and the spatial configuration of collector molecules, and then selective collection of the collector on target minerals is enhanced.

The invention relates to the technical field of battery materials, in particular to a low-sodium sulfur carbonate precursor and a preparation method thereof.The chemical general formula of the carbonate precursor is Ni1-x-yCoxMny (OH) 2m (CO3) 1-m. The preparation method comprises the following steps that S1, Ni, Co and Mn salt solutions are prepared; preparing a sodium carbonate and sodium bicarbonate solution as a precipitator; s2, introducing a protective atmosphere into a reaction system, and adding a metal salt solution and a precipitant into the kettle for a co-precipitation reaction; s3, the nickel-cobalt-manganese carbonate subjected to the co-precipitation reaction is subjected to simple primary water washing and then is dehydrated; s4, calcining the dehydrated nickel cobalt manganese carbonate in calcining equipment; and S5, washing and drying the pre-sintered nickel-cobalt-manganese oxide. According to the invention, the problem that the content of sodium and sulfur impurities in the carbonate precursor is too high is solved, and the content of Na and S impurities in the carbonate precursor is reduced.

The present invention provides a polyacrylonitrile spinning dope, a preparation method thereof and an application thereof, belonging to the technical fields of textile chemicals and preparation of high-performance polyacrylonitrile fibers. The preparation method comprises the following steps: mixing acrylonitrile monomers, comonomers, a chain transfer agent and a photocatalyst in an aqueous sodium thiocyanate solution to form a mixed solution; and then carrying out a polymerization reaction on the mixed solution under a light source to obtain a polyacrylonitrile spinning dope; wherein the chain transfer agent is one or more of bis(carboxymethyl)trithiocarbonate, 2-(n-butyltrithiocarbonate)propionic acid, 2-(dodecyltrithiocarbonate)-2-methylpropionic acid and 2-mercapto-S-thiobenzoyl acetic acid. The preparation method can synthesize a polyacrylonitrile spinning dope with high stability, high solid content and suitable viscosity, meeting the requirements for producing high-performance acrylic fibers.

A bonding process is described in which two substrates are bonded together by applying to the surface of at least one of the substrates a curable, not yet cured 2-component adhesive that comprises, in a first component, a compound A having at least one defined cyclic thiocarbonate unit having a five-membered ring structure and, in a second component, a curing compound B selected from compounds having at least one functional group selected from primary amine groups and secondary amine groups.

The invention discloses a sulfur-containing polycarbonate copolymer and a preparation method thereof, and belongs to the technical field of polythiocarbonate materials. A molecular main chain of the copolymer simultaneously comprises a carbonate unit, a thiocarbonate unit, a polyester unit and a polysulfide chain segment formed by ring opening of elemental sulfur, and the polysulfide chain segment can be used as a crosslinking bridge bond to form a three-dimensional network structure. The preparation method comprises the step of carrying out copolymerization reaction on an epoxy compound, carbon disulfide, cyclic anhydride, carbon dioxide and elemental sulfur in the presence of a quaternary ammonium salt / quaternary phosphonium salt initiator and an organic boron catalyst under the pressure of carbon dioxide. According to the invention, coordination of mechanical properties of polycarbonate and functional characteristics of polythiocarbonate is realized through multi-component copolymerization, and introduction of S-S bonds endows the material with excellent electrochemical properties, potential self-repairing ability and adjustable crosslinking degree.

The invention relates to a synthesis method of an S-deuterated methyl-N-benzoyl-N-alkyl thioformate compound, which is characterized in that in an organic solvent, under the air condition, 4-methyl benzoic acid, isonitrile and CD3SSO3Na are subjected to cascade reaction to obtain the S-deuterated methyl-N-benzoyl-N-alkyl thioformate compound. The method has the advantages of simple reaction conditions and high product yield and purity, develops a new synthesis route and method for the preparation of the S-deuterated methyl-N-benzoyl-N-alkyl thioformate compound, and has good application potential and research value.

This application provides surface-charged polymer nanoparticles, their synthesis method, and applications. The synthesis method for the charged polymer nanoparticles includes: adding a thiocarbonate chain transfer agent, a charged monomer, an aromatic monomer containing at least two benzene rings, and an initiator to a mixture of water and an organic solvent to obtain a mixture; heating the mixture in a vacuum-sealed environment, and obtaining surface-charged polymer nanoparticles through a polymerization reaction and self-assembly process, wherein the charged monomer is a monomer with a single charge type.

The invention belongs to the field of RAFT reagent synthesis, and particularly relates to a preparation method of a reversible addition fragmentation chain transfer reagent. Comprising the following steps: by taking dodecyl mercaptan as a starting raw material, generating thiolate under the action of alkali; and reacting the obtained thiolate with carbon disulfide (CS2) to generate trithiocarbonate. And reacting the obtained trithiocarbonate with trichloromethane and acetone under the catalysis of alkali, and finally acidifying to obtain 2-[dodecyl sulfenyl (thiocarbonyl) sulfenyl]-2-methyl propionic acid, namely the RAFT reagent. Tetrabutylammonium bromide is specifically selected as a phase transfer catalyst, and the catalyst system provided by the invention can realize higher product yield.

The invention discloses an Off-On type fluorescent probe compound, the chemical name of the Off-On type fluorescent probe compound is thiocarbonic acid O-(2-butyl-1, 3-dioxo-2, 3-dihydro-1H-benzo [de] isoquinoline-6-yl) O-(4-fluorophenyl) ester (short for 2B6NI-4FP-TC), a preparation method of the Off-On type fluorescent probe compound and application of the Off-On type fluorescent probe compound to detection of mercury ions in complex matrix samples such as ashing soil and tea leaves. During detection, Hg < 2 + > is combined with sulfur atoms of thiocarbonate and catalyzes ester bond breakage, 4-OH of a fluorescent parent nucleus is exposed, and a system fluorescent signal is remarkably amplified. The probe has extremely high selectivity and sensitivity, the detection limit is as low as 1.5 * 10 <-8 > M, the stability in a wide pH range is good, qualitative and quantitative detection of Hg < 2 + > can be realized through visual colorimetry and fluorescence spectrum, and the probe is particularly suitable for rapid and high-throughput detection of trace Hg < 2 + > in complex matrix samples such as traditional Chinese medicines and tea leaves subjected to ashing treatment.

The invention belongs to the technical field of mineral flotation, and particularly discloses an environment-friendly xanthate collecting agent and a preparation method and application thereof. The environment-friendly xanthate collecting agent comprises at least one of alkoxy dithiocarbonate as shown in formulas I-VII, wherein the alkoxy dithiocarbonate is selected from the group consisting of alkoxy dithiocarbonate as shown in the formulas I-VII; the preparation method of the environment-friendly xanthate collecting agent comprises the following steps that epoxypropane, fatty alcohol and caustic alkali A are added into a reaction kettle, an oxyalkylation ring-opening addition reaction is conducted under the inert atmosphere, and propylene glycol ether reaction liquid is obtained; and carbon disulfide and caustic alkali B are added into the propylene glycol ether reaction liquid for a reaction, and the environment-friendly xanthate collecting agent is obtained. The raw materials are wide in source, the cost is low, the yield is high, operation is easy and convenient, no waste water is discharged in the reaction process, and the obtained product is free of pungent smell, high in collecting performance, good in environmental compatibility and easy to degrade in an aqueous solution and has good industrial application prospects.

The present disclosure provides compounds useful as electrolyte materials, and lithium sulfur batteries comprising the same.