27 results about "Thiocarbonic acid" patented technology

The invention relates to the field of foaming materials, in particular to a low-solvent-residue expandable polystyrene material and a preparation method thereof. The expandable polystyrene material with low solvent residue comprises the following raw materials in percentage by weight: 0.35-0.45% of a free radical initiation system, 0.35-0.45% of S, S, S, S, S, S, S, S, S, S, S, S, S, S, S According to the present invention, the material comprises, by weight, 0.1-0.15% of S, S '-bis (alpha, alpha'-dimethyl-alpha ''-acetoxy) trithiocarbonate, 0.15-0.2% of ascorbic acid, 0.1-0.2% of a nucleating agent, 0.2-0.3% of a suspending agent, 0.001-0.003% of an emulsifier, 5-6% of a foaming agent, 0.15-0.25% of a plasticizer, 0.001-0.002% of hydroxyethyl cellulose, 0.05% of sodium phosphate, 0.1-0.2% of zinc stearate, and 0.1-0.2% of glyceryl stearate, the obtained material has low solvent residue, meets food safety requirements, and is suitable for food packaging.

The invention provides an electrolyte suitable for a silicon-based negative electrode material, a lithium ion battery containing the electrolyte and an electronic device. The electrolyte suitable for the silicon-based negative electrode material comprises an electrolyte additive, a metal salt and a non-aqueous solvent, wherein the electrolyte additive comprises a basic additive and a functional additive; the functional additive comprises a combination of at least two of an oxide material, a thiocarbonate compound or a cyanoacrylate compound, so that the electrochemical performance and the safety performance of the lithium ion battery under high-temperature and low-temperature conditions are effectively improved.

The application discloses a hydrophilic PVDF emulsion polymerization method, polyvinylidene fluoride prepared by the method and application, and relates to the technical field of lithium battery materials.The hydrophilic PVDF emulsion polymerization method comprises the following steps: S1, water and an emulsifier are added into a reaction device, vacuum is drawn, and inert gas is filled into the reaction device space until the oxygen content is less than or equal to 26 ppm; S2, vinylidene fluoride, an initiator and a chain transfer agent are added, and a polymerization reaction occurs at a temperature of 70-95 DEG C and a pressure of 3.5-5 MPa, wherein the chain transfer agent is a carboxyl functional group-containing thiocarbonic ester; and S3, the polymerization reaction is stopped, and the emulsion obtained through the polymerization reaction is subjected to coagulation, washing and drying to obtain the hydrophilic PVDF.Compared with traditional PVDF emulsion polymerization, more carboxyl groups can be introduced into the hydrophilic PVDF emulsion polymerization method, so that the PVDF product itself has good hydrophilicity.

The Invention relates to a method Method for making a ruthenium catalyst comprising the steps of - Providing an aromatic dithiol substituted on adjacent aromatic carbon atoms with thiol groups, wherein in a first step an aromatic compound substituted with two leaving groups on adjacent aromatic carbon atoms are reacted with alkali trithiocarbonate to obtain an aromatic benzodithiole-thione, which in a subsequent step is reacted / hydrolysed with a base; - providing a zinc dithiolate compound by reacting the aromatic dithiol with a zinc carboxylate in an organic solvent; Reacting the zinc dithiolate compound with a ruthenium compound wherein X1 and X2 are, independently of each other, are anionic ligands and are the same or different; L and L2 are, independently of each other, neutral electron donor ligands and are the same or different; Ar is an aromatic group which may be substituted and that can be bridged with L, if L is an alkoxy group; - Obtaining a ruthenium catalyst of formula 4 or 4a, wherein R1 to R4 are, independently of each other, are selected from hydrogen, halogen, alkyl, aryl, or R.1 with R3, R3 with R4 or R2 with R4 are forming together an aliphatic or aromatic ring.

This invention provides an O,O'-monothiocarbonate compound and its preparation method, belonging to the field of organic chemical synthesis technology. This invention discloses a multi-component reaction of a silicon ether, elemental sulfur, and a difluorocarbene reagent under the action of an organic base to synthesize O,O'-monothiocarbonate compounds. Furthermore, the preparation method disclosed in this invention uses readily available and commercially available reactants, avoiding the use of hazardous and scarce reagents. The reaction conditions disclosed in this invention are mild, easy to operate, and yield a high quantity of O,O'-monothiocarbonates.

The application provides a polysulfide carbonate, a preparation method thereof and a photocurable composition, and belongs to the technical field of optical resins.The polysulfide carbonate provided by the application has a structure shown in formula I.The polysulfide carbonate provided by the application has high molar refractivity and low molar volume by introducing an aromatic group and a sulfur atom, so that the refractivity of the polysulfide carbonate is improved.The results of examples show that the refractivity of the polysulfide carbonate provided by the application reaches 1.7 or more.

A process for preparing preferably degradable copolymers by free radical ring-opening polymerization using thionolactone monomers or thionocarbonate monomers, in the presence of a radical polymerization initiator. Also, the copolymers, which include thioester or thiocarbonate bonds, that are obtained by carrying out the process including the free radical ring-opening polymerization using thionolactone monomers or thionocarbonate monomers.

The application belongs to the technical field of medicine, and relates to a thio carbonate bond bridged dimer prodrug and self-assembled nanoparticles thereof, and application thereof in drug delivery. The application relates to a thio carbonate bond bridged dimer prodrug as shown in a general structure (I) and construction of self-assembled nanoparticles thereof, and application thereof in drug delivery. The preparation method is simple and easy to implement, the thio carbonate bond bridged dimer prodrug can be self-assembled to form nanoparticles, and has redox dual-response drug release capacity, so that intelligent response activation of the prodrug in tumor cells can be realized, and the anti-tumor effect and safety of the prodrug are ensured. The application provides a new strategy for developing an efficient and low-toxicity drug delivery system, and meets the urgent needs of high-end chemotherapy preparations in clinical treatment.

The invention provides polythiocarbonate, a preparation method thereof and a photocurable composition, and belongs to the technical field of optical resin. The polythiocarbonate provided by the invention has a structure as shown in a formula I. By introducing aryl and sulfur atoms, the polythiocarbonate has high molar refractive index and low molar volume, so that the refractive index of the polythiocarbonate is improved. The result of the embodiment shows that the refractive index of the polythiocarbonate provided by the invention reaches 1.7 or above.

The invention relates to the technical field of electroplating, in particular to dithiocarbonate sulfonate, a preparation method thereof and a copper plating solution. The preparation method of the dithiocarbonate sulfonate comprises the following steps: preparing an alkaline alcohol solution, wherein the alkaline alcohol solution comprises an alcohol compound; adding carbon disulfide into the alkaline alcohol solution, carrying out nucleophilic addition reaction on a certain content of the alcohol compound and the carbon disulfide to generate dithiocarbonate, and dissolving the dithiocarbonate into the residual content of the alcohol compound to obtain a reaction solution; and adding a sultone compound into the reaction solution, carrying out nucleophilic substitution reaction on the dithiocarbonate and the sultone compound, and generating and separating out the dithiocarbonate sulfonate. The synthesis route of the dithiocarbonate sulfonate is enriched, and the synthesized compound can meet the performance requirements of copper plating brighteners.

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.

Process for the preparation of a compound having at least one monothiocarbonic ester group, by reacting, in the presence of a catalyst, - a compound having at least one thiol group, and - a dialkyl carbonate, wherein the catalyst is a salt of a metal selected from group IIIb or IVb of the periodic table.

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.

A compound represented by the following formula (1):[wherein R1 represents a hydrogen atom or a methyl group; R2 represents an aromatic ring group optionally having a substituent or an alkyl group substituted with an aromatic ring group optionally having a substituent; X1 represents a (thio)ester bond, a (thio)carbonate bond, a (thio)amide bond, a (thio)urethane bond, a (thio)urea bond, a (thio)ether bond, oxygen, sulfur, or a nitrogen atom optionally having a substituent; X2 represents oxygen, sulfur, or a nitrogen atom optionally having a substituent; A represents a divalent group optionally having a substituent; L represents an (m+1)-valent linking group optionally having a substituent; m represents an integer of 1 to 3; and n represents 0 or 1].

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 relates to a method Method for making a ruthenium catalyst comprising the steps of - Providing an aromatic dithiol substituted on adjacent aromatic carbon atoms with thiol groups, wherein in a first step an aromatic compound substituted with two leaving groups on adjacent aromatic carbon atoms are reacted with alkali trithiocarbonate to obtain an aromatic benzodithiole-thione, which in a subsequent step is reacted / hydrolysed with a base; - providing a zinc dithiolate compound by reacting the aromatic dithiol with a zinc carboxylate in an organic solvent; Reacting the zinc dithiolate compound with a ruthenium compound wherein X1 and X2 are, independently of each other, are anionic ligands and are the same or different; L and L2 are, independently of each other, neutral electron donor ligands and are the same or different; Ar is an aromatic group which may be substituted and that can be bridged with L, if L is an alkoxy group; - Obtaining a ruthenium catalyst of formula 4 or 4a, wherein R1 to R4 are, independently of each other, are selected from hydrogen, halogen, alkyl, aryl, or R.1 with R3, R3 with R4 or R2 with R4 are forming together an aliphatic or aromatic ring.

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.

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 present application belongs to the technical field of rare earth hydrometallurgy, and particularly relates to a purifying agent for treating a lead-containing rare earth solution and an application method. The purifying agent comprises the following raw materials in parts by weight: a sulfur source 5-30 parts, a magnesium source 3-15 parts, and water 40-95 parts; the sulfur source is any one or a combination of two of sodium dimethyl dithiocarbamate and sodium diethyl dithiocarbamate, and sodium pentathiocarbonates; the magnesium source is any one of magnesium chloride, magnesium sulfate, and magnesium nitrate. The present application improves the temperature and acidity application range of the purifying agent, reduces the cooling and neutralization cost of the rare earth solution, utilizes the insolubility of the purifying agent to avoid the residue of excessive purifying agent in the rare earth solution, forms a magnesium polysulfide carbonate salt, improves the ability of magnesium to replace lead ions, and ensures that the lead content in the rare earth solution is removed to a qualified level.

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 discloses a preparation method of multi-block stereoregular polythioether, and belongs to the technical field of polythioether synthesis. The method comprises the following steps: firstly, mixing butyl acrylate, a free radical initiator, a polythiocarbonate chain transfer agent, a first sulfur-containing monomer and N, N-dimethylacetamide, and carrying out free radical polymerization reaction in an inert atmosphere to form a first polymer block; and adding a second sulfur-containing monomer and a quaternary ammonium salt catalyst into the reaction system, and carrying out anionic ring-opening polymerization reaction to form a second polymer block, thereby obtaining the multi-block stereoregular polythioether. By means of the dynamic reversible chain transfer characteristic of thioester bonds, efficient connection of polymerization reactions of different mechanisms is achieved, the intermediate purification step is avoided, and the technological process is remarkably simplified. The obtained polymer has a clear block structure, high stereoregularity and controllable molecular weight, and is suitable for the fields of engineering plastics, special elastomers, functional coating materials and the like.

The invention discloses a polymer with a main chain containing a photoresponse group and a preparation method of a segmented copolymer of the polymer, and belongs to the technical field of polymer synthesis. According to the preparation method provided by the invention, an allyl sulfur macrocyclic monomer and a vinyl monomer are used as comonomers, trithiocarbonate is used as a chain transfer agent, and in the presence of a photosensitizer and an organic solvent, free radical ring-opening copolymerization is performed to realize polymerization to obtain the polymer with the main chain containing the photoresponse group; the photoresponse group can be directly embedded into the main chain of the polymer in the process, so that the polymer is endowed with the photoresponse characteristic. The obtained polymer with the main chain containing the photoresponse group has the characteristics of adjustable molecular weight and narrow molecular weight distribution (low dispersity), and is suitable for the fields of biological medicines and the like. The block copolymer is obtained by carrying out free radical ring-opening copolymerization on a polymer with a main chain containing a photoresponse group, an allyl sulfur macrocyclic monomer, a vinyl monomer and a chain transfer agent in the presence of a photosensitizer and an organic solvent.

The application provides a kind of polymerization induced self-assembly spherical micelle particle and its preparation method and application, belong to lubricating additive technical field. Including the following steps: thio carbonic acid ester chain transfer agent, methacrylic ester monomer, first initiator and organic solvent are mixed to carry out RAFT polymerization reaction, the macromolecular chain transfer agent obtained, benzyl methacrylate, second initiator and base oil are mixed to carry out polymerization induced self-assembly reaction. RAFT polymerization reaction can effectively control radical active growth, obtain the macromolecular chain transfer agent with narrow molecular weight distribution and good dispersity, in the process of polymerization induced self-assembly reaction, polymethyl benzyl methacrylate is used as nucleation segment, and is distributed in micelle inside, polymethyl methacrylate is used as stable segment and is distributed in micelle outside, because methacrylic ester monomer has strong lipophilicity, so spherical micelle particle can be stably dispersed in base oil.

The application discloses a degradation method of bisphenol A-based copolymer polycarbonate, which comprises the following steps: taking bisphenol A-based copolymer polycarbonate, taking dichloromethane as a solvent, adding a mercaptan nucleophile reagent and a catalyst, stirring to carry out a degradation reaction, and separating a degradation product after the reaction is completed; the catalyst is one or more of inorganic alkali catalysts and organic metal alkali catalysts; the degradation product is bisphenol A and a thio carbonate small molecule containing a high-activity mercapto functional group, the latter can be used as a heavy metal ion chelating agent, a metal surface modifier, a clickable chemical intermediate and the like, and is used in wastewater treatment, corrosion-resistant coating, self-repairing material and fine chemical synthesis; the method has mild conditions, low energy consumption and high added value of products, and provides a green and feasible new way for recycling and utilization of polycarbonate resources.

The present application relates to a kind of thio carbonates-based hydrogen sulfide donor and its preparation method and application.The thio carbonates-based hydrogen sulfide donor includes at least one alanine residue that can be broken by aminopeptidase N catalysis in its structure and at least one thiophenyl carbonate element or its derivative that can release carbonyl sulfide, also includes amino benzyl connecting element or its derivative that connects alanine residue and thiophenyl carbonate element.The hydrogen sulfide donor prepared by the present application can be triggered to release by aminopeptidase N specificity, realizes inflammation microenvironment specificity hydrogen sulfide delivery, compared with existing hydrogen sulfide donor, the hydrogen sulfide donor of the present application has greater advantage in the aspect of inflammation regulation.

The application discloses a method for preparing a RAFT reagent by reducing and decomposing sodium trifluoromethylsulfinic acid. The method uses sodium trifluoromethylsulfinic acid and bromide and thiourea as raw materials, uses triphenyl phosphine and diphenyl chlorophosphine as a reducing agent, uses sodium carbonate as an alkali, and uses acetonitrile as a solvent. Sodium trifluoromethylsulfinic acid is reacted with bromide and thiourea by reducing and decomposing to obtain a trithiocarbonate compound, and the trithiocarbonate compound is a commonly used RAFT reagent. The raw material used in the method is cheap and easy to obtain, the reactants are all non-irritating and low-toxicity and safe reagents, the reaction condition is mild, the substrate range is wide, and the method is suitable for large-scale production.

The application discloses a one-step method for synthesizing sodium pentathio-carbonate, which comprises the following steps: dissolving sulfur in carbon disulfide, adding a cationic surfactant, and dropping sodium sulfide aqueous solution to carry out reaction to obtain sodium pentathio-carbonate product. Compared with the conventional method, the method uses sulfur, carbon disulfide and sodium sulfide as raw materials, uses a cationic surfactant as a phase transfer catalyst, first adds the cationic surfactant, and then drops the sodium sulfide aqueous solution, so that the raw materials can fully react under a lower temperature condition, energy consumption is reduced, hydrolysis of sodium pentathio-carbonate can be effectively prevented, side reactions in the system can also be effectively prevented, the method has the advantages of simple process, convenient operation, safety, low energy consumption, high synthesis efficiency, high product yield and quality, green environmental protection and the like, and can realize industrialized preparation of sodium pentathio-carbonate, promote industrialized application of sodium pentathio-carbonate, has high use value and good application prospect.