44 results about "Thiocarbanilide" patented technology

There is provided a transmission composition including a lead corrosion reducing effective amount of at least one lead corrosion inhibitor selected from the group consisting of sulfurized alkylphenols; phosphosulfurized hydrocarbons; substituted or unsubstituted thiocarbamates; substituted or unsubstituted thiazoles; substituted or unsubstituted triazoles; substituted or unsubstituted thiadiazoles.

This invention discloses a kind of sulphur- and nitrogen-containing silicone coupling reagent and its preparation method, that is, gamma-isocyanate propyl trialkoxyl silicane and dithiol compound react with each other at a mole ratio of 2:1 in organic solvent with the existence of organic catalyst. The mixture is then vacuum distilled to obtain a silicone coupling reagent that has two thiocarbamate units and six alkoxyls. This method has the advantages of simple technique flow, high yield and high practicability. The silicone coupling reagent based on this invention has good thermo stability and considerable coupling effect. It is a good substitution of conventional silicone coupling reagent and can be used in fumed silica-containing rubber so as to promote the comprehensive properties of vulcanized rubber.

A polymer has urethane or thiourethane units, which can be used, in particular, as an adhesion primer for the adhesive bonding of metal or glass to rubber. The polymer comprises base units comprising at least a sub-unit of formula —X1—CO—NH— in which X1 respectively represents O or S, and additional units comprising at least a secondary alcohol function and a thioether function in the α position relative to the alcohol function. The polymer can be used as an adhesion primer for the adhesive bonding of a substrate, for example glass or metal, to an unsaturated rubber, or as a corrosion-resistant protective coating for a metal substrate. A metal reinforcer, such as wire, cord, film or plate, can be coated with the polymer.

The invention discloses a preparation method of an iodide ionic ligand PbS nanocrystal, iodide ionic ligand PbS nanocrystal ink and a solar battery. According to the preparation method, a Pbs nanocrystal passivated by a iodide ionic ligand is synthesized directly at one step under the action of butyl amine by taking lead iodide and N,N-thiocarbanilide as precursors and taking N,N-dimethyl formamide as a solvent, so that the preparation process flow is simplified, and the synthetic preparation cost and device preparation cost of the nanocrystal are lowered. The iodide ionic ligand Pbs nanocrystal provided by the invention can be dissolved in N,N-dimethyl formamide and other solvents to obtain iodide ionic ligand PbS nanocrystal ink of which the nanocrystal absorption peak is adjustable within a range of 850 to 1100 nanometers. Meanwhile, when a N,N-dimethyl formamide solution of the PbS nanocrystal passivated by the iodide ionic ligand is used for preparing a solar battery, the device performance which is comparable to solution phase ligand exchange can be achieved.

The invention discloses a new-typed silane coupling agent with sulphur and nitrogen element and making method, which is characterized by the following: reacting hydrocarbyl silane and alkyl monoisocyanates in the organic solvent with the molar rate at 1: 1 acted by tertiary amine catalyst; decompressing; distilling to make new-typed silane coupling agent with 1 thioamino formic ether structural units and 3 alkoxy groups; possessing higher heat stability and stronger coupling effect than traditional silane coupler; fitting for improving the synthetic property of sulfurized gel in the white carbon black rubber.

The invention discloses an infrared thermal-sensitive imaging composition, which comprises macromolecule resin with self-dissolution-resistant characteristic, and an infrared absorbent. The macromolecule resin with self-dissolution-resistant characteristic is of alkali soluble resin simultaneously containing phenolic hydroxyl and carbamate or thio carbamate strong electron withdrawing groups. Thegreatest characteristic of the invention is that an infrared positive thermal-sensitive CTP plate can be prepared without a dissolution inhibitor. The mechanism of the invention can be considered butnot limited to: the carbamate or the thio carbamate strong electron withdrawing groups in the resin plays a dissolution resistant role in the phenolic hydroxyl in the resin, thereby reducing the alkaline solubility of the resin. When the plate is scanned by infrared laser, the infrared radiation is converted into heat energy. The dissolution resistant role of the carbamate or the thio carbamate strong electron withdrawing groups in the resin in the phenolic hydroxyl in the resin is damaged at a high temperature, so the alkaline solubility of the resin in an alkaline solution is restored.

The present invention provides a preparation method of thiocarbamate, which is used for preparing benefication reagent of the category of thiocarbamate. The preparation method is characterized in that secure, lowly toxic and non-corrosive allyl alcohol is used as a raw material to substitute flammable, easily volatilizing, highly toxic and corrosive chloropropene, reacts with ammonium thiocyanide to prepare thiocyanate ester and isothiocyanate, and then reacts with alcohol with higher boiling point after simple distillation to prepare the thiocarbamate, so that the production process is safer and conducive to the environmental protection.

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

The invention belongs to the technical field of a nano material and a nano technology, and more specifically relates to a controllable preparation method of a Cu2ZnSnS4 nano-crystalline material. The preparation method comprises the following steps: adding copper acetate, zinc acetate and stannic chloride in oleylamine, introducing argon as protection gas, stirring copper acetate, zinc acetate and stannic chloride under certain temperature for completely dissolving the materials to obtain a complexation solution of metal salt; heating the complexation solution of metal salt to set temperature, adding a diphenyl ether solution of thiocarbanilide; after the reaction is complete, cooling the material to the room temperature, cleaning the reaction products by methanol to obtain the Cu2ZnSnS4 nano-crystalline material. The method selects thiocarbanilide as a sulfur source, employs a heat injection method to prepare the Cu2ZnSnS4 nano-crystalline material, the Cu2ZnSnS4 nano-crystalline material is obtained by controlling the addition proportion of the precursor, and the Cu2ZnSnS4 nano-crystallines with different size is obtained by controlling the reaction temperature and the reaction time.

The invention relates to a thiocarbamate-containing thiadiazole derivative. The derivative is 2,5-diN,N'-dialkyldithiocarbamate alkylthioether-1,3,4-thiadiazole, and has the structural formula defined in the description. A preparation method of the derivative comprises the steps of: adding 2,5-dimercapto-1,3,4-thiadiazole and N,N'-dialkyldithiocarbamate alkyl chloro-ester or N,N'-dialkyldithiocarbamate alkyl bromo-ester to a reaction medium, and adding a catalyst to the reaction medium at the same time, wherein the molar ratio of 2,5-dimercapto-1,3,4-thiadiazole to N,N'-dialkyldithiocarbamate alkyl chloro-ester or N,N'-dialkyldithiocarbamate alkyl bromo-ester is 1:2.0-1:2.3; carrying out a reaction for 1-10 hours at a temperature of 10-160 DEG C; removing the reaction medium by filtering and washing; and obtaining a thiocarbamate-containing thiadiazole derivative product by vacuum drying. The invention is characterized in that a thiocarbamate-based oil-soluble group, i.e. an extreme pressure antiwear group, is introduced into thiadiazole, so that the thiadiazole derivative is soluble in the base oil of a lubricant, thereby enabling the lubricant to have excellent extreme pressure antiwear performance.

The invention discloses an organic complex zinc environment-friendly compound stabilizer for PVC (polyvinyl chloride) and a method for preparing the organic complex zinc environment-friendly compound stabilizer. The organic complex zinc environment-friendly compound stabilizer comprises, by weight, 60-80 parts of zinc salt stabilizers, 1-7 parts of isolated soybean proteins, 5-20 parts of epoxy compounds, 5-15 parts of rare earth oxide, 10-35 parts of hydrotalcite, 8-20 parts of thiocarbanilide, 1-9 parts of antioxidants, 1-5 parts of ultraviolet absorbents, 1-2 parts of organic lubricants and 20-60 parts of fillers. The organic complex zinc environment-friendly compound stabilizer and the method have the advantages that the zinc salt stabilizers are used as main stabilizers, other raw materials are added into the zinc salt stabilizers and are used as auxiliary materials, accordingly, the organic complex zinc environment-friendly compound stabilizer for the PVC can be obtained and is high in transparency, and excellent heat stabilization effects can be realized by the organic complex zinc environment-friendly compound stabilizer.

The invention relates to a method for preparing a sulfo-carbamate compound based on photocatalysis and particularly relates to a method for preparing the sulfo-carbamate compound based on photocatalysis. A reaction formula in the method is formula (shown in the description), wherein R1 represents optionally substituted aryl, naphthyl, heteroaryl and C1-C10 alkyl; R2 represents optionally substituted aryl, naphthyl, heteroaryl or optionally substituted aryl C1-C10 alkyl. According to the method, the substituted sulfo-carbamate compound is synthesized by virtue of visible light catalysis, the reaction energy source is clean, and the conditions are mild; the raw materials are easily available, the use of toxic phosgene and carbon monoxide is avoided, the reaction operation is simple, and theprocess is safe and reliable; and by utilizing a nonmetal photocatalyst, the use of a metal reagent is avoided, and water is taken as a cosolvent, so that the method is environment-friendly.

The synthesis process of thiocarbamate is one reaction process between mercaptan or thiophenol and aryl nitro compound in the presence of CO, Se as catalyst and triethylamine as co-catalyst in the condition with organic solvent or without solvent inside sealed high pressure reactor. The nitro benzene has substituent radical R1 in the benzene ring being H or one or several electron donating or electron drawing groups; and the sulfide has R2 capable of being alkyl group or one or several electron donating or electron drawing aryl groups. The molar ratio between mercaptan or thiophenol and aryl nitro compound is 0.1-10; the molar consumption of Se is 0.1-20 % of the reactant with less molar consumption; the molar consumption of triethylamine is 10-200 % of the reactant with less molar consumption; and the molar number of the organic solvent is 1-50 times that of the reactants. The reaction has period of 1-20 hr, temperature of 0-200 deg.c and CO pressure of 0.1-10 MPa.

The invention relates to the field of synthesis of chemical products and production of beneficiation reagents, in particular to a synthetic process of N-allyl-O- isobutyl thionocarbamate. The synthetic process is characterized in that the use quantity of a catalyst in a reaction is about 0.5-4 mole percent while the general use quantity of the catalyst is between 0.1 mole percent to 1 mole percent; the production technology improves the appearance, the yield and the odor of an N-allyl-O- isobutyl-thiocarbamate product prepared with fatty alcohol; an initial reactant allyl isothiocyanate is prepared through a reaction of allyl halide and alkali metal or ammonium thiocyanate under the action of a phase transfer catalyst; then the fatty alcohol, the catalyst prepared in the process and trimethylchlorosilane are added for the reaction; a reaction mixture is heated to 100-120 DEG C, and heat preservation is performed for 3-6 h. When the reaction is ended, unreacted alcohol is pumped through vacuum, and trimethylchlorosilane serving as the synthetic catalyst has higher reactivity, so that the reaction conversion rate is increased.

The invention discloses an antibacterial aging resisting polyethylene color master batch. The antibacterial aging resisting polyethylene color master batch is prepared from the following raw materials in parts by weight: 160 to 170 parts of HDPE, 18 to 24 parts of ethylene-octene block copolymer, 6 to 9 parts of polyethylene wax, 2 to 4 parts of alkyl phenolpolyoxyethylene, 12 to 16 parts of diethylene glycol butylether acetate, 2 to 4 parts of dimethyl methylphosphonate, 5 to 9 parts of antioxidant 1076, 8 to 12 parts of thiocarbanilide and 6 to 14 parts of coconut monoethanol amide. The antibacterial aging resisting polyethylene color master batch disclosed by the invention has the characteristics of good antibacterial, antifungal and aging resisting properties, low processing cost and simple preparation process; when the antibacterial aging resisting polyethylene color master batch is applied to coloring of a PE product, the antibacterial aging resisting polyethylene color master batch has the advantages of improved color stability and smaller chromatic aberration; the problems of unstable color, greater chromatic aberration and the like when an existing PE color master batch is colored are solved.

The invention relates to a method for analyzing the content of a rubber accelerator thiocarbanilide. Employing a liquid chromatogram to measure thiocarbanilide content, the method comprises: preparing a diphenylthiourea methanol solution, and putting the solution into an ultrasonic cleaner for oscillation, uniform shaking and filtering; maintaining the detection room temperature at 20-30DEG C, adopting VWD (variable wavelength detector) as the liquid chromatogram, choosing a chromatographic column in the type of 250*4.6mm EXTEND-C18, taking water and methanol as the mobile phase of the liquid chromatogram, controlling the flow velocity at 1ml / min and the detection wavelength of the VWD at 254nm, and injecting 5 microliters of a sample into the liquid chromatogram with a micro sample injector. The method carries out gradient elution to the solvent, and the liquid chromatogram analysis method measures that the retention time of thiocarbanilide is 14-17min. The method provided in the invention has simple process, high accuracy of analysis result and minor error.

This invention discloses a kind of silicone coupling reagent that contains thiocarbamate unit and its preparation method, that is, mercaptoalkylsilane and alkyl monoisocyanate react with each other at a mole ratio of 1:1 in organic solvent with the existence of tertiary amine catalyst. The mixture is then vacuum distilled to obtain a silicone coupling reagent that has one thiocarbamate unit and six alkoxyls. This method has the advantages of simple technique flow, high yield and high practicability. The sulphur-containing silicone coupling reagent based on this invention has good thermo stability and considerable coupling effect. It is a good substitution of conventional silicone coupling reagent and can be used in fumed silica-containing rubber so as to promote the comprehensive properties of vulcanized rubber.

The present invention relates to a system and preparation method for preparing an accelerant N,N'-thiocarbanilide via continuous reaction in the field of rubber vulcanization. The system and method can achieve continuous uninterrupted reaction with high production efficiency; compared with the traditional preparation method, the reaction is carried out in a completely organic phase, and the reactants can be sufficiently contacted, so that fewer reaction by-products are caused, no waste water is generated, and no sodium is produced, a water washing process is not required, and a lot of water resources are saved; the whole process of the reaction is carried out in a closed link, the unreacted carbon disulfide and aniline and the sulfur produced by the treatment of hydrogen sulfide in an incinerator can be returned for reuse, recycling and energy saving properties are provided, and the whole process is cleaning, so that the preparation process is more efficient and environmentally friendly and accords with the current national industrial upgrading trend.

The invention discloses a high-temperature-resistant modified adhesive. The adhesive comprises the following components in parts by weight: 100 parts of epoxy resin, 30-60 parts of maleimide resin, 15-25 parts of alkylidene glycidyl ether, 0.5-1 part of ethylenediamine, 1-3 parts of methyl tetrahydrophthalic anhydride, and 0.5-2 parts of thiocarbanilide. The high-temperature-resistant modified adhesive provided by the invention is an epoxy adhesive, but the high-temperature-resistant modified adhesive breaks through the disadvantage that an epoxy adhesive is not resistant to high temperature,and the high-temperature-resistant modified adhesive has excellent adhesion at the high temperature.

The invention discloses modified asphalt severely-waterproof anticorrosive boat-bottom fluorescent paint. The modified asphalt severely-waterproof anticorrosive boat-bottom fluorescent paint is prepared from the following raw materials in parts by weight: 6-9 parts of methyl MQ silicon resin, 10-14 parts of chlorinated rubber, 4-6 parts of diamidocyclohexane, 0.4-1.0 part of ethylene-propylene copolymer, 0.3-0.7 part of m-phenylene dibenzoate, 0.6-1.0 part of tolylfluanid, 1-2 parts of thiocarbanilide, 32-35 parts of modified asphalt, 8-12 parts of modified waste sodium silicate-bonded sand, 1-2 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2-4 parts of cuprous oxide, 2-4 parts of fluorescent powder, 1-3 parts of phytic acid, 7-9 parts of a 200# coal tar solvent, 4-6 parts of dimethyl benzene and 4-6 parts of butyl acetate. According to the modified asphalt severely-waterproof anticorrosive boat-bottom fluorescent paint disclosed by the invention, the chlorinated rubber and the modified asphalt are added together to improve the corrosion resistance, the adhesion, the flame resistance, the insulation and the weather resistance of the paint, so that the paint is severely waterproof and anticorrosive and used as the boat-bottom paint; the added methanesulfenamide can be used for reducing attachment of aquatic organisms and reducing the consumption of fuel, and the fluorescent powder is added to the bottom of the boat to increase identification degree and reduce loss. Moreover, the waste sodium silicate-bonded sand is modified, so that not only is pollution to environment reduced, but also the fire resistance and the fireproof performance of the paint are increased, and thus, the quality of the paint is further improved.

The present invention relates to a method for synthesizing thiocarbamate by using bis(trichloromethyl) carbonate, amines compound and substituted thioalcohol (including thiophenol compound) as raw material and adopting í‹one-pot methodíŒ reaction in organic solvent.

The invention discloses a preparation method of thiocatbamate, comprising the following steps: adding an aromatic nitro compound and thiol or thiophenol into a container with a stirring function based on the mol ratio of 1:0.8-1.2, adding a catalyst Pd-Fe / TiO2 and an ionic liquid in the container in terms of that 25-45mg of the catalyst and 5-15mL of the ionic liquid are added in the container when per 10mmol of the aromatic nitro compound is added in the container, sealing the container, vacuumizing, introducing CO for replacement for more than one time when the vacuum degree is lower than 400Pa, stirring to react for 3-8h on the conditions that the temperature is 20-40 DEG C and the pressure is 400-1400Pa, extracting by an organic solvent after the reaction is finished to obtain extract, cleaning by water, drying, decompressing and evaporating the organic solvent to obtain a crude product, and performing recrystallization on the crude product by petroleum benzine to obtain the thiocatbamate.

The invention belongs to the field of synthesis of a compound, relates to a preparation method of a thiocarbamate compound, in particular to a method for synthesizing thiocarbamate through reacting ofcatalyzing three components of sodium sulfinate, isonitrile and water by iodine. The method comprises the following steps: adding the sodium sulfinate, the isonitrile and the water into ethyl acetate, then adding a molecular iodine catalyst and a phosphite reducing agent, heating, stirring and reacting for 6 to 10 hours under a condition that the temperature is 80 to 100 DEG C, and extracting, separating and purifying after finishing the reaction, thus obtaining the thiocarbamate. According to the method disclosed by the invention, the isonitrile is adopted as a carbon source, so that poisonous photogene and carbon monoxide are prevented from being used; odorless sodium sulfinate is adopted as a sulfur source, so that odorous thiophenol or thiol is prevented from being used; non-metalliciodine is adopted for catalyzing, so that a metal reagent is prevented from being used; the reaction has the advantages that the operation is simple and convenient, the technology is safe, environmentfriendliness is realized, and the like.