85 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 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.

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 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.

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 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.

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 novel polymeric photochromic dyes having at least one and no more than four naphthopyran subunits and a plurality of polyether chains, their use and photoresponsive color-changing acrylates, allyl carbonates, urea, carbamate or thiocarbamate polymers containing them, and photoresponsive color-changing products.

This invention provides a rapid and visualized detection method for the pesticide thiocarbamate using medium-entropy nanozymes, and its application, belonging to the field of analytical chemistry. This invention is based on a metal-ligand crosslinking strategy, utilizing the chelating ability of dopamine phenolic hydroxyl groups and Fe... 3+ Ce 3+ and Cu 2+ The invention utilizes a multi-metal ion self-assembly synthesis of medium-entropy nanozymes (FeCeCu MEzymes), and designs a medium-entropy nanozyme (FeCeCu MEzymes) sensor combined with a smartphone to achieve rapid and visual detection of carbofuran. The rapid and visual detection method for carbofuran provided by this invention has the advantages of being fast, highly sensitive, selective, and providing intuitive detection results. It is also simple to operate and has a low cost.

This invention relates to the field of industrial lubricant additives, specifically to a novel multifunctional industrial oil compound, comprising, by weight, a sulfurized olefin extreme pressure anti-wear agent, a phenolic antioxidant, an amine antioxidant, a phosphate ester anti-wear agent, a boronized phosphorus-containing polyisobutylene succinimide dispersant, a thiocarbamate, dodecenyl succinic acid, and a metal deactivator; the weight ratio of the sulfurized olefin extreme pressure anti-wear agent to the phosphate ester anti-wear agent is 1.2:1 to 5:1; the number average molecular weight of the boronized phosphorus-containing polyisobutylene succinimide dispersant is 1000 to 3000. The novel multifunctional industrial oil compound provided by this invention, through scientific formulation design and optimized preparation process, effectively solves the technical defects of existing industrial oil compound agents and possesses multiple significant beneficial effects.

The present invention focuses on advancing perovskite solar cells (PSCs) by improving the management of ionic defects within the perovskite photoactive layer during both fabrication and operation. Traditional perovskite passivators tend to remain fixed on the surface after deposition, but perovskites are sensitive to environmental conditions that can alter their structure and create new defects. As a result, conventional passivators are often ineffective in addressing these changes. This innovation incorporates thiocarbamate bonds into the passivating molecules, allowing them to dissociate under high temperatures and release additional passivators to passivate newly formed defects.

The invention provides a lubricating oil composition and a preparation method thereof. The lubricating oil composition of the present invention comprises: (A) a viscosity index improver; (B) a thio phenolic ester type antioxidant; (C) a polyisobutylene succinimide; (D) sulfurized olefin; (E) a dialkyl dithiocarbamic acid salt and / or a dialkyl dithiocarbamic acid ester; (F) a phosphate ester; (G) a metal corrosion inhibitor; (H) a pour point depressant; (I) a lubricating base oil; wherein the viscosity index improver is a copolymer of methyl acrylic acid C8-C12 alkyl ester, methyl acrylic acid C13-C18 alkyl ester and N-vinyl imidazole. The lubricating oil composition disclosed by the invention has excellent extreme pressure anti-wear performance, viscosity-temperature performance, low-temperature flowing performance and dispersing performance, and is suitable for a wind power transmission system.

The application discloses a preparation method and application of a dithio-carbamate compound / polypolydithio-carbamate compound. The dithio-carbamate compound / polypolydithio-carbamate compound is obtained by reacting an amine compound, an isonitrile compound, carbon disulfide and a mercaptan compound in an organic solvent in the presence of a base. The raw materials used in the application are all industrial raw materials, which can be directly purchased and have low cost, and can be produced in a large scale of gram grade. The polymerization operation is simple, the yield is high, the reaction condition is mild, no metal catalyst is needed, the reaction can be carried out at room temperature and in the air, and no toxic and harmful by-products are generated. The polypolydithio-carbamate compound obtained by the application also has excellent mechanical properties and luminescent properties, and can be applied to the fields of mechanical materials and optoelectronic devices, thereby promoting the further development of the polypolydithio-carbamate compound.

This bile acid adsorbing agent composed of silica particles, to which an organosilicon compound represented by general formula (1) is bonded, has the advantage that water-absorption swelling does not occur.(In formula (1), R1, R2, and R3 each independently represent a hydrogen atom, a C1-C20 alkyl group, a vinyl group, a phenyl group, or a benzyl group, and R4 represents a group represented by general formula (2), provided that R1 and R3 may be bonded to each other to form a benzene ring.)(In formula (2), A represents a linear or branched divalent linking group which may contain a heteroatom, a urethane bond, a urea bond, a thiourethane bond, and / or a thiourea bond, R5's each independently represent a C1-C10 alkyl group or a C6-C10 aryl group, R6's each independently represent a C1-C10 alkyl group or a C6-C10 aryl group, and n represents an integer of 1-3.).

Thioesters, thiocarbamates, thiocarbazates, semithiocarbazates, peptides, aza-amino acid conjugates, and azapeptides; and a chemoselective and site-specific functionalization protocol of protected thiocarbazates and semithiocarbazates are described. The protocol features the use of Mitsunobu reaction to alkylate specifically the nitrogen atom close to the acylthiol moiety with alcohols to produce protected mono-substituted thiocarbazates that can be stored for months, activated under mild conditions at low temperature using halonium reagents and integrated orthogonally to make substituted semicarbazides that can be used, e.g., as synthons in synthesis of aza-amino acid conjugates, azapeptides and other peptidomimetics. Methods for preparing and using ureases, carbazides, semicarbazides, beta-peptides, azapeptides, and other peptidomimetics and azapeptide conjugates, and uses of ureases, carbazides, semicarbazides, beta-peptides, azapeptides in drug discovery, diagnosis, inhibition, prevention and treatment of diseases are also described.

The application belongs to the field of optical functional materials, and particularly relates to a micro-nano hierarchical structure optical window film based on dynamic phase separation regulation and a preparation method and application thereof. The application provides a micro-nano hierarchical structure optical window film based on dynamic phase separation regulation, which comprises a transparent substrate layer and an optical functional layer; the optical functional layer is an integrated structure; the optical functional layer comprises a high-refractive-index acrylate monomer, a low-refractive-index acrylate monomer and a structure directing agent. The high-refractive-index acrylate monomer comprises a thiourethane acrylate; the low-refractive-index acrylate monomer comprises trimethylolpropane triacrylate; and the structure directing agent comprises a polyether-modified polysiloxane acrylate. Through the innovative integrated micro-nano hierarchical structure and the controllable one-step self-assembly process, the application solves the contradiction that the antireflection and anti-dazzle performances are difficult to be simultaneously realized on the window film product, improves the reliability of the window film, and realizes excellent comprehensive optical performance.