132 results about "Thiocarbamate" patented technology

The invention discloses a composite collecting agent and a preparation method and application thereof, and relates to the technical field of solid waste recycling. The composite collecting agent comprises a main agent, an auxiliary agent and a synergist, and the mass ratio of the main agent to the auxiliary agent is (3-1): (1-2). The mass of the synergist is 0.1%-2.5% of the total mass of the composite collecting agent; the structural formula of the main agent is as shown in formula (I): R-O-C (= S)-NH-R '(I); in the formula (I), R is alkyl, and R'is 3-chloro-1, 2-epoxypropane; the auxiliary agent is a mercaptobenzothiazole derivative. The thiocarbamate and the mercaptobenzothiazole derivative are compounded according to a specific proportion for the first time, a Zn-S shielding layer is destroyed through an intermolecular synergistic effect, and the silver recovery rate is increased; the preparation method is simple and easy to operate, facilitates reduction of the dosage of a single agent and reduces environmental pollution. The foam stability is improved, the flotation efficiency is improved, the selective collection efficiency of the silver-zinc ore is remarkably improved, and the flotation index is improved.

The invention provides a solid electrolyte and a battery. The solid electrolyte comprises polythionocarbamate, polyacrylonitrile and a lithium salt, wherein the polythionocarbamate comprises a thiocarbamate structural unit. In the solid electrolyte provided by the invention, amino groups in a thiocarbamate structural unit in the polythionocarbamate and cyano groups in polyacrylonitrile form hydrogen bonds, so that the polythionocarbamate and the cyano groups in the polyacrylonitrile have good compatibility, the crystallinity of the polyacrylonitrile can be effectively reduced by blending the polythionocarbamate and the polyacrylonitrile, and the flexibility of the solid electrolyte is improved; and meanwhile, the solid electrolyte has relatively good mechanical properties. Particularly, sulfur atoms in a thiocarbamate structural unit in the polythionocarbamate contribute to promoting lithium ion transmission and improving the ionic conductivity, and due to the interaction of hydrogen bonds formed by the polythionocarbamate and polyacrylonitrile, the transmission rate of lithium ions can be further improved.

The invention discloses a high-performance clean type anti-wear hydraulic oil complexing agent which is prepared from the following substances in parts by mass: 30 to 60 parts of an antioxidant, 20 to 40 parts of an anti-wear agent, 2 to 5 parts of boronized polyisobutylene bis-succinimide, 2 to 7 parts of thiocarbamate, 4 to 10 parts of dodecenylsuccinic acid and 0.2 to 2 parts of graphene nanosheets. The lubricating oil is prepared from the following components in parts by weight: 0.5-1.5 parts of a metal deactivator, 0-2 parts of DISUPER S24 and 30-50 parts of base oil. The preparation method comprises the following steps: S21, heating the base oil, adding the boronized polyisobutylene bis-succinimide and the thiocarbamate, and stirring; s22, sequentially adding an antioxidant, an anti-wear agent, dodecenylsuccinic acid, DISUPER S24 and a metal deactivator into the solution obtained in the step S11, heating to 80 DEG C, and reacting for 2 hours; and S23, adding graphene nanosheets into the solution obtained in the step S22, and carrying out ultrasonic dispersion for 1 hour to obtain the product.

The invention discloses a self-repairing acrylate dielectric material based on a dual-mode network as well as a preparation method and application of the self-repairing acrylate dielectric material based on the dual-mode network. According to the material, dynamic covalent chemistry and a synergistic effect of a dual-mode network structure are utilized, a long-chain flexible cross-linking agent and a short-chain chain extender containing dynamic thiocarbamate bonds are adopted, and the self-repairing acrylate dielectric material based on the dual-mode network is prepared. Meanwhile, the proportion of the multifunctional micromolecule TMPTMA or PET4A is optimized, and performance balance and self-repairing are achieved. In the preparation process, click reaction curing is initiated through ultraviolet light, the process is simple, and the cost is low. The tensile strength is 0.3-0.6 MPa, the elongation at break is 350%, the dielectric constant at 1kHz is 7-9, the dielectric loss is 0.047-0.067, and the mechanical property can be completely recovered within 30 minutes at the temperature of 100 DEG C. The device is suitable for bionic flapping wing aircraft muscle systems, muscle-like drivers, repairable artificial heart valves and the like, damage is repaired through dynamic key recombination, the reliability of the device is improved, and the service life of the device is prolonged.

The invention relates to an alkenyl thionocarbamate compound as well as a preparation method and application thereof, the structural formula of the thionocarbamate compound is # imgabs0 #, R, R1 and R2 are respectively and independently one of alkyl, aryl, ester group and halogen; r3 is one of alkyl, alkenyl and aryl; the compound can be used as a sulphide mineral collecting agent and shows excellent performance in the mineral separation process of sulphide minerals which are difficult to separate, such as chalcopyrite and pyrite.

A method for producing a polythiol composition, the method including a reaction step of reacting a thiocarbamate resin with a quaternary ammonium salt comprising a quaternary ammonium cation and a counter anion to produce a polythiol composition.

The invention discloses a modification method of end-group-modified polyphenylene sulfide, which comprises the following steps: mixing polyphenylene sulfide prepared by a sodium sulfide method, an organic solvent, a sulfydryl modifier and an organic tin catalyst, and reacting for 1-4 hours at the temperature of 200-300 DEG C to obtain the end-group-modified polyphenylene sulfide, the chemical structural formula of the end group modified polyphenylene sulfide is shown as a formula I, wherein n is greater than 0. According to the invention, isocyanate and a terminal group react under the catalysis of dibutyltin dilaurate to generate thiocarbamate, and the terminal group of polyphenylene sulfide is accurately regulated and modified from the molecular level, so that the solution fluidity of polyphenylene sulfide is improved, and the processability is obviously improved.

The invention relates to long-life turbine oil for an ammonia-resistant turboset and a preparation process of the long-life turbine oil. The complexing agent comprises an antioxidant, an anti-rust agent, an anti-wear reagent at extreme pressure, a metal deactivator, a demulsifier, an alkali-resistant stabilizer and base oil, the antioxidant comprises at least two of dinonyl diphenylamine, beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl propionate and dialkyl dithiocarbamate, the demulsifier comprises at least two of dialkyl dithiocarbamate, and the alkali-resistant stabilizer comprises at least two of dialkyl dithiocarbamate. The anti-wear reagent at extreme pressure comprises at least two of tricresyl phosphate, thiophosphate and amine salt derivatives thereof, and phosphate and amine salt derivatives thereof, and the alkali-resistant stabilizer comprises polycarboxylic polyether and aliphatic amines. The preparation method comprises the following steps: sequentially adding the components, heating, stirring, mixing at constant temperature, cooling and filtering.

One aspect of the invention relates to a method for producing a plastic article or semi-finished product from a polymerizable mixture of isocyanates and isocyanate-reactive components, wherein the mixture comprises at least one photochromic dye, at least one surface additive, an isocyanate component and at least one of the following components: - a poly(thio)urethane prepolymer produced from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate-reactive groups in relation to isocyanate groups; - a poly(thio)urethane prepolymer produced from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate groups in relation to isocyanate-reactive groups; - a thiol component; wherein the mixture contains at least one photobase generator, a photochromic dye and a surface additive. Further aspects of the invention relate to a plastic article or a plastic article provided with an additional layer, each produced by a method according to another aspect of the invention, as well as a polymerisable mixture.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

Disclosed is a dual functional urease and nitrification inhibitor composition and method for inhibiting the hydrolysis of urea and nitrification of ammonia in soil. Methods of making the dual functional urease and nitrification inhibitor and / or a composition containing the dual functional urease and nitrification inhibitor are also disclosed.

One aspect concerns a process for producing a plastic body or semi-finished product from a polymerizable mixture of isocyanates and isocyanate-reactive components, wherein the mixture comprises at least one photochromic dye, at least one surface additive, an isocyanate component, and at least one of the following components: - A poly(thio-)urethane prepolymer prepared from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate-reactive groups compared to isocyanate groups; - A poly(thio-)urethane prepolymer prepared from isocyanates and isocyanate-reactive components, wherein the ratio of the two components is such that there is an excess of isocyanate groups compared to isocyanate-reactive groups; - a thiol component; wherein the mixture comprises at least a photobase generator, a photochromic dye and a surface additive. Other aspects concern a plastic body or a plastic body provided with an additional layer, each manufactured using a process according to a different aspect, as well as a polymerizable mixture.

The invention discloses a composite collecting agent, a combined reagent and a method for recovering indium from zinc leaching dangerous waste residues, the composite collecting agent for recovering indium from zinc leaching dangerous waste residues comprises a main collecting agent and an auxiliary collecting agent, the mass ratio of the main collecting agent to the auxiliary collecting agent is (3: 1)-(5: 1), and the mass ratio of the main collecting agent to the auxiliary collecting agent is (3: 1)-(5: 1). The main collecting agent comprises N-allyl-O-isobutyl thiocarbamate, and the auxiliary collecting agent comprises diphenyl thiourea. The composite collecting agent and the composite inhibitor are used for carrying out flotation separation on ore pulp of the zinc leaching dangerous waste residues, high-selectivity flotation of indium in the zinc leaching dangerous waste residues can be achieved, meanwhile, volatilization of indium, silver and zinc in flotation tailings is improved in combination with microwave enhanced roasting, and the recovery rate of indium, zinc and silver in the zinc leaching dangerous waste residues is remarkably increased.

A method for producing a fluoropolymer by solution polymerization or dispersion polymerization, the method including: in the presence of an initiator, a chain transfer agent, and a solvent, (i) homopolymerizing tetrafluoroethylene; or (ii) randomly copolymerizing tetrafluoroethylene and at least one of a monomer represented by the following formula (1) or a monomer represented by the following formula (2). The chain transfer agent includes at least one selected from dithioester compounds, dithiocarbamate compounds, trithiocarbonate compounds and xanthate compounds. The fluoropolymer contains 50 to 100 mol % of a polymerized unit based on the tetrafluoroethylene. The formula (1): CF2═CR1R2 wherein R1 and R2 are as defined herein, the formula (2): CH2═CR3R4 wherein R3 and R4 are as defined herein.

This invention discloses a flotation separation method for high-sulfur copper-zinc ore beneficiation, comprising the following steps: Step a. Classifying and grinding the high-sulfur copper-zinc ore, controlling the grinding fineness to ensure that the product particle size P80 is 120μm to 150μm; Step b. Performing a first-stage copper-zinc mixed flotation operation on the obtained grinding product: adding lime during the flotation process at a rate of 100g / t to 200g / t to adjust the pH value of the pulp to the range of 7.5 to 8.5, forming surface statics between chalcopyrite, sphalerite, and pyrite. Potential difference; an aerated flotation machine is used as the flotation equipment, and the selective collector O-ethyl-N-benzoyl thiocarbamate is added at a dosage of 25g / t to 30g / t for aerated flotation to obtain a copper-zinc-sulfur mixed concentrate; step c. the obtained copper-zinc-sulfur mixed concentrate is fed into a vertical spiral stirred mill for regrinding, and the regrinding fineness is controlled to P90≤20μm to achieve full mineral liberation and surface desorption; this invention can achieve precise separation of copper, zinc and sulfur, reduce costs and improve efficiency and increase the comprehensive utilization rate of resources.

The invention discloses a dithiocarbamate nickel (II) complex as well as a preparation method and application thereof, the chemical formula of the nickel (II) complex is [NiIILCl], and L is (E)-2-(phenyl (pyridine-2-yl) methylene) hydrazino methyl dithioformate. The nickel (II) complex is mild in synthesis condition and high in target yield. In-vitro MTT activity evaluation proves that the introduction of copper ions has a synergistic effect on the anticancer activity of the nickel (II) complex, so that the activity of the nickel (II) complex is improved from a micromole level to a nanomole level, and the amplification is as high as 200 times or more. Cell scratch experiments prove that the nickel (II) complex and copper (II) ions are combined for use, so that the migration resistance is achieved. A nickel (II) complex and copper ion combination strategy provided by the invention not only has a direct killing effect on cancer cells, but also can effectively inhibit the migration ability of the cancer cells, and shows huge application potential in the field of cancer treatment.

The invention belongs to the technical field of polymer adhesives, and particularly relates to a polyurethane hot melt adhesive and a preparation method thereof. Modified isocyanate in the polyurethane hot melt adhesive contains a very active functional group NCO, can be combined with carboxyl in modified polypropylene glycol to form an amido bond, can also react with amino in POSS doped polyester resin to form a urea structure, and can also be subjected to an addition reaction with sulfhydrylated silicon dioxide to generate thiocarbamate; on the basis of modified isocyanate, a dense cross-linked network is constructed, and plastic deformation caused by repeated friction is reduced, so that the dry grinding fastness and the wet grinding fastness are improved; meanwhile, an amino group of the modified isocyanate can be combined with a carboxyl group of the modified polypropylene glycol, a sulfonic group of the POSS doped polyester resin and a sulfydryl group of the modified silicon dioxide to form an interpenetrating network structure, so that the folding resistance and the washing fastness of the hot melt adhesive are effectively improved.

The invention relates to the technical field of organic photovoltaic cell devices, and particularly discloses a functional reagent and a preparation method and application thereof in conductive glass substrate recovery, the functional reagent is a mixed solvent obtained from a chelating agent and a chlorobenzene organic solvent, and the chelating agent is selected from sodium thiocarbamate, carboxylic acid, polyphosphate, aminocarboxylic acid, 1, 2, 3, 4-tetramethyl-1, 3-pentanediol and 1, 3, 4-tetramethyl-1, 3-pentanediol. The chlorobenzene organic solvent is selected from at least one of 1, 3-diketone, hydroxycarboxylic acid, polyamine and amides, and the chlorobenzene organic solvent is selected from at least one of chlorobenzene, ethanol, diethyl ether and propyl alcohol. The functional reagent can be repeatedly and recycled for multiple times, so that the effect of protecting the environment is achieved. The photoelectric conversion efficiency of the original battery can still be kept after the conductive glass substrate recovered by the functional reagent is assembled into the complete battery.

The present invention relates to a method for curing a polythiourethane transparent casting substrate, comprising the steps of: providing a first component A comprising a polythiourethane prepolymer having iso(thio)cyanate end groups, wherein the prepolymer is prepared from at least one polythiol monomer and at least one polyiso(thio)cyanate monomer, used in an amount adapted such that the molar ratio R2 of NCX groups to SH groups is in the range of 2 to 35; providing a second component B comprising at least one polythiol monomer; mixing the first and second components A and B together and filling the resulting polymerizable mixture into a molding cavity; and the weight The present invention relates to a method comprising the steps of curing a composite mixture to obtain a polythiourethane transparent substrate, wherein the prepolymer is prepared by mixing at least one polyiso(thio)cyanate monomer and at least one polythiol monomer in initial amounts such that the initial molar ratio R1 of the NCX groups / SH groups of the monomers is in the range of 0.3R2 to 0.95R2; polymerizing the mixture; and adding an additional amount of at least one polyiso(thio)cyanate monomer to the mixture such that the molar ratio of the NCX groups / SH groups of all monomers used in the preparation of the prepolymer is equal to R2, where X is O or S.

The invention provides a method for removing impurities and enriching platinum group metals by using resin, and belongs to the technical field of precious metal recovery, the method comprises the following steps: S1, filling composite resin into a resin column, adjusting the pH value of the resin to 0.5-1, injecting a solution containing the platinum group metals into the resin column, and passing through the column to obtain a filtrate containing the platinum group metals; s2, washing the composite resin with water to obtain a water washing solution; the water washing liquid and the platinum group metal containing filtrate are mixed and then refined, and platinum group metal is obtained; the composite resin comprises cation exchange resin and a thiocarbamate functionalized carbon nanotube. According to the method, a resin adsorption technology is adopted, impurity elements in the platinum-palladium-rhodium refining process are efficiently removed through compounding of cation exchange resin and a modifier (thiocarbamate functionalized carbon nanotubes), and the purity of a precious metal product is improved.

The invention relates to a synthesis method of an S-methyl thiocarbamate compound, which is characterized in that in an organic solvent, under the air condition, 4-methyl benzoic acid, tert-butyl isocyanate and CH3SSO3Na are subjected to cascade reaction to obtain the S-methyl thiocarbamate compound. The method has the advantages of simple reaction conditions and high product yield and purity, develops a new synthesis route and method for preparation of the S-methyl thiocarbamate compound, and has good application potential and research value.

This invention relates to the field of mineral processing flotation reagents, specifically disclosing a high-efficiency collector for the flotation of sphalerite and its preparation method. The high-efficiency collector provided by this invention achieves synergistic enhancement of the functions of each component by compounding isopropyl xanthate, dialkyl dithiocarbamate, and mercaptoacetate, and introducing a designed and synthesized polymeric synergist. The three basic collector components together constitute a dense and stable primary hydrophobic adsorption layer. The introduced synergist, on the one hand, enhances the adsorption strength and selectivity on the surface of sphalerite through multiple functional groups; on the other hand, its grafted hydrophilic polymer chains can form steric hindrance at the mineral-water interface and regulate local hydrophilicity and hydrophobicity, thereby further optimizing the hydrophobic state of the mineral surface and inhibiting gangue inclusions. The composite reagent provided by this invention improves the recovery rate of useful minerals while ensuring concentrate quality.

The invention discloses a liquid crystal oligomer and a preparation method thereof, and a liquid crystal elastomer and a preparation method thereof, and the end group structure of the main chain of the liquid crystal oligomer is as shown in the formula I. Through molecular structure design, a thiocarbamate structure and a double-bond end-capped structure are introduced, the double-bond end-capped liquid crystal oligomer containing the thiocarbamate structure is provided, combination of ultraviolet light induced rapid curing and thermal reversible reconstruction of a network is achieved, and the stability of the liquid crystal oligomer containing the thiocarbamate structure is improved. The method can be used for constructing a photocuring liquid crystal elastomer with a reversible cross-linked network structure. Therefore, the liquid crystal elastomer provided by the invention not only has rapid processing and forming capability, but also has excellent dynamic performance, and reversible reconstruction and reprocessing can be realized through dynamic key exchange. Meanwhile, the energy dissipation capacity is remarkably improved through the introduction of the liquid crystal domain and the cooperation of a polythionocarbamate structure, so that the liquid crystal elastomer shows excellent performance in the application of impact protection and the like.

The present invention relates to the technical field of organic synthesis, and in particular to a method for synthesizing dithiocarbamate derivatives. The method comprises the following steps: mixing a compound represented by Formula I, an alcohol reagent, carbon disulfide, and a compound represented by Formula II to obtain a mixture; and reacting the resulting mixture at a temperature of 20 to 30°C for 5 hours to obtain the dithiocarbamate derivative. The method for synthesizing the dithiocarbamate derivative does not require an oxidant or a metal catalyst, can react at room temperature, is environmentally friendly, has high reaction tolerance, and provides a good yield.

The invention relates to a transparent dynamic covalent cross-linked polyurethane plate capable of being processed and remolded and a preparation method of the transparent dynamic covalent cross-linked polyurethane plate. The transparent dynamic covalent cross-linked polyurethane plate comprises the following raw material components: polyisocyanate, a polyol chain extender, a functional cross-linking agent, a solvent and a catalyst, the plate structurally comprises at least one of boric acid ester with a thermal stimulation response function, Diels-Alder reaction, thiocarbamate bonds, oxime urethane bonds, disulfide bonds, imine bonds and carbamate bonds. According to the invention, dynamic covalent bonds with thermal response characteristics are introduced into cross-linking points, and the cross-linked polyurethane plate with high transparency, high mechanical strength and reversible processability is constructed through interaction and synergy with rich hydrogen bonds in polyurethane.

The invention relates to the technical field of carbon nanotubes, and discloses a preparation method of a high-adsorbability carbon nanotube material, which comprises the following steps: reacting imidazole-4-ethyl formate with succinyl chloride under the catalysis of triethylamine to obtain an intermediate 1, and reacting the intermediate 1 with hydrazine hydrate to obtain an intermediate 2; and reacting the intermediate 2 with carbon disulfide to obtain the bis-imidazole diacyl thiocarbamate compound. Enabling the acidified carbon nano tube to react with 3-chloropropyl triethoxy silane, so as to obtain the chloropropyl carbon nano tube. And finally, carrying out quaternization reaction on the chloropropyl carbon nano tube and a bis-imidazole diacyl thiocarbamate compound, so as to obtain the high-adsorbability carbon nano tube material. The carbon nanotube material prepared by the method has efficient adsorbability on metal elements and organic pollutants.

HIGH-PERFORMANCE, REGULAR EXPANSION ELEMENTS FOR OIL AND GAS APPLICATIONS. The invention relates to a downhole sealing device, a well system employing a downhole sealing device, and a method of sealing within a borehole. The downhole sealing device, in one aspect, comprises one or more downhole sealing features and an elastomeric element comprising a thiourethane / acrylate polymer coupled to the one or more downhole sealing features. In at least one aspect, the elastomeric element can be used to be compressed in a downhole application against tubing as a seal.

A method of producing a thiourethane resin raw material, the method including comprising the step of generating the thiourethane resin raw material by reacting a thiourethane resin and an active hydrogen compound with each other.

The present invention relates to the field of organic synthesis, and more specifically to a method for preparing pionin. This method first synthesizes a dithiocarbamate using ammonium dithiocarbamate as a raw material, and then uses the dithiocarbamate as a raw material to synthesize 2-alkylthio-4-methyl-thiazole. The dithiocarbamate is a solid, making it easy to separate the halogenated hydrocarbons involved in the reaction, thereby avoiding contamination caused by the difficulty in recovering excess halogenated hydrocarbons and reducing the generation of pollutants. This method solves the technical problem of the existing pionin synthesis route, which produces a large number of pollutants.