44 results about "Thiocarbanilide" patented technology

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 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 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 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.

A reaction product is useful as a crosslinking agent for polymers having functional groups reactive with the reaction product such as hydroxyl, carboxylic acid, amide, thiol, urea, carbamate and/or thiocarbamate groups, wherein the polymer includes an acrylic, polyester, polyether and/or polyurethane. The reaction product is derived from a) a polyisocyanate or polyisocyanurate, b) a hydroxyalkyl carbamate, c) an aldehyde and d) at least one monohydric alcohol.

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 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.