35 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 present invention provides a poly(O,O'-monothiocarbonate) compound and its preparation method and application, belonging to the technical field of sulfur-containing polymers. The present invention carries out a polymerization reaction of silyl ether, elemental sulfur and difluorocarbene reagent under the action of an organic base, dissolves the obtained polymer product in an organic solvent and adds a precipitant for precipitation, and the obtained precipitate is a poly(O,O'-monothiocarbonate) compound. The poly(O,O'-monothiocarbonate) compound prepared by the present invention has a clear chain structure, and the prepared film refractive index reaches 1.6188, with outstanding optical properties; and the reaction raw materials of the preparation method of the present invention are easily available and can be directly purchased commercially, with the advantages of low raw material price, mild synthesis conditions, simple process and high polymerization efficiency.

A process can be used for the synthesis of compounds containing at least one non-cyclic carbonate group, wherein a compound A) containing at least one five-membered cyclic monothiocarbonate group is reacted with at least one hydroxy group of a compound B) or of compound A) itself.

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.

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 polymer microsphere for a battery coating diaphragm as well as a preparation method and application of the polymer microsphere. The polymer microsphere for the battery coating diaphragm comprises the following raw materials in parts by weight: 20-40 parts of a basic monomer, 5-10 parts of a functional monomer, 1-5 parts of an initiator I, 3-10 parts of a cross-linking agent, 50-90 parts of a solvent I and 2-8 parts of a reactive aid, wherein the basic monomer comprises a hard monomer and a soft monomer; the functional monomer is selected from a monomer containing at least one group of carboxyl, acylamino, hydroxyl and epoxy group; the reaction type auxiliary agent is selected from one or more of an acrylate-trithiocarbonate copolymer and an acrylic acid-trithiocarbonate copolymer. The polymer microsphere provided by the invention is low in dissolution rate and strong in binding power when being used for a battery coating diaphragm.

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].

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 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.

The utility model relates to the technical field of manufacturing equipment of dispersing agents, in particular to preparation equipment of a trithiocarbonate dispersing agent, which comprises a reaction kettle, a stirring mechanism and a cleaning mechanism, the stirring mechanism comprises a power, a rotating shaft and a stirring paddle, the rotating shaft is arranged along the axial direction of the reaction kettle, and the stirring paddle is arranged along the radial direction of the reaction kettle. The stirring paddle comprises a mounting shaft arranged along the radial direction of the reaction kettle and a paddle fixedly mounted on the mounting shaft, one end of the mounting shaft is fixedly connected with the rotating shaft, and the other end of the mounting shaft is provided with a first assembly structure; the cleaning mechanism comprises a scraping strip abutting against the inner wall of the reaction kettle, a second assembly structure fixedly arranged on the scraping strip and a plug connector, one end of the plug connector is connected with the first assembly structure, and the other end of the plug connector is detachably connected with the second assembly structure. The cleaning device has high cleaning efficiency and long service life.

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.

A process reduces the odor of compounds with al least one five-membered cyclic monothiocarbonate group, referred to as monothiocarbonate compounds. The monothiocarbonate compounds are in are liquid phase and are brought into contact with an oxidant.

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 relates to the technical field of epoxy adhesives, in particular to a triblock self-assembly toughened resin and a synthesis method and application thereof.The toughened resin is synthesized from (50.0-70.0) eq. First monomer, (30.0-50.0) eq. Second monomer, 0.2 eq. Free radical initiator and (4.0-8.0) eq. RAFT reagent, the first monomer is a methacrylate soft monomer, the second monomer is a hard monomer, and the second monomer is an acrylic acid monomer. The free radical initiator is any one of a peroxide initiator and an azo initiator, and the RAFT reagent is dicarboxyl trithiocarbonate. The toughened resin disclosed by the invention can form a low-molecular-weight ABA type triblock copolymer, an aggregation state of the copolymer can be evolved into an elastomer taking a crystal phase domain as a physical crosslinking point through a spontaneous crystallization behavior between chains by a segment A, and two carboxyl groups at the tail ends of the chains and an epoxy group are subjected to a ring-opening reaction, so that an internal toughening effect is achieved; the shearing strength and the fracture toughness can be remarkably improved, and the epoxy structural adhesive has relatively high application value in the field of epoxy structural adhesives.

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.