6 results about "Mercaptobenzimidazol" patented technology

This invention relates to the field of printed circuit board manufacturing technology and discloses a fine etching process for PCB circuit patterns. The process includes injecting a fine etching composition comprising deionized water, hydrochloric acid, copper chloride dihydrate, anhydrous magnesium chloride, p-toluenesulfonic acid monohydrate, polyethylene glycol, and 2-mercaptobenzimidazole into a circulating working tank of an etching machine; setting the temperature of the working solution in the circulating working tank; sending the substrate to be etched, after dry film development, into a spray section; activating the spray array and setting the spray pressure to etch the substrate; and rapidly rinsing the etched substrate in a deionized water washing section, followed by strong air drying to obtain the circuit pattern. This invention reduces surface tension through specific components to promote solution penetration into the microstructure, utilizes an organic corrosion inhibitor to form a stable protective layer on the trench sidewalls, and combines the vertical impact of the nozzle jet on the bottom, leveraging the difference between mechanical force and chemical adsorption force to achieve anisotropic etching, thus suppressing lateral corrosion of fine circuits.

The present application relates to the paint technical field, especially relates to a kind of nano composite material EP@DA@GO@M and preparation method thereof, water-based epoxy heavy-duty anticorrosive coating with slow-release function and preparation method thereof.The preparation method of the nano composite material EP@DA@GO@M includes the following steps: water-based graphene slurry a is diluted to obtain graphene slurry b;Dopamine, catalyst, water and 1,6-hexanediol diglycidyl ether are mixed to form mixed solution C;Graphene slurry b is added in mixed solution C, and mixed at (25~35) ℃ for (20~24) h to obtain composite material EP@DA@GO;2-mercapto benzimidazole anhydrous ethanol solution is added to silane coupling agent to obtain mixture KM;After EP@DA@GO, water and KM are mixed, heated to react to obtain nano composite material EP@DA@GO@M.The nano composite material EP@DA@GO@M prepared by the present application is applied in water-based epoxy coating, can effectively improve the anticorrosion of water-based epoxy coating, realizes long-acting anticorrosive function of water-based epoxy coating, in addition, its preparation raw material is biological material, and coating is green and environment-friendly.

The application discloses a copper plating composition and a chemical copper plating process, and relates to the field of copper plating compositions, which is composed of the following components: a copper salt providing divalent copper ions; a complexing agent for complexing the divalent copper ions; a stabilizer for stabilizing the copper plating composition, which is selected from at least one of the group consisting of 2,2'-dipyridyl, potassium selenocyanate, potassium thiocyanate and 2-mercaptobenzimidazole; a reducing agent for reducing the complexed divalent copper ions to metallic copper; an alkaline adjusting agent for adjusting the pH value of the composition to an alkaline range suitable for chemical copper plating; and a solvent. The process stability and product yield are improved: through the optimized combination of the core stabilizer, the complexing agent and the reducing agent, the self-decomposition of the copper plating bath is effectively inhibited, the process stability is significantly enhanced, the incidence of key defects such as backlight defects in the metalization of the circuit board hole is greatly reduced, and the high yield of the final product is ensured.

The application relates to a high-temperature-resistant antioxidant lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oils. A bentonite imidazole composite particle grafted antioxidant and an alkyl imidazole phosphate ionic liquid complex system are constructed to achieve a double-antioxidation effect. MoS2 nanosheets in the bentonite imidazole composite particle are exposed to sufficient S vacancies after low-temperature ultrasonic crushing, form stable covalent grafting with the mercapto group of 2-mercaptobenzimidazole, avoid the defects that traditional small-molecule antioxidants are easy to volatilize and migrate, meanwhile, the alkyl imidazole phosphate ionic liquid forms a dynamic balance in base oil, continuously releases a nitrogen-containing cation component, cooperates with the grafted antioxidant to capture free radicals generated at high temperature, interrupts the oxidation chain reaction, on the process, the composite bentonite prepared by a solvothermal method provides a stable carrier for the antioxidant component, a freeze-drying process retains the porous structure and active sites of the material, improves the initial oxidation temperature of the lubricating oil, and effectively adapts to high-temperature long-time operation conditions.

This invention provides a deformation-resistant and crack-resistant composite polymer material and a method for manufacturing PE gas pipelines, belonging to the field of polymer material technology. The material components include bimodal PE100 resin, metallocene polyolefin mPE, polytetrafluoroethylene, crack-resistant crosslinking agent, POE elastomer, anti-aging agent, and interface compatibilizer. The crack-resistant crosslinking agent is prepared by reacting octavinyl POSS, Grubbs second-generation catalyst, and 5-norbornene-2-methanol, followed by reaction with triethylamine and 3-isopropenyl α,α-dimethyl benzyl isocyanate. The anti-aging agent is prepared by reacting hydroxyl-terminated polydimethylsiloxane and isophorone diisocyanate, followed by reaction with 2,2,6,6-tetramethylpiperidinol and 2-hydroxy-4-acryloyloxybenzophenone, and then mixing with 2-mercaptobenzimidazole. The interface compatibilizer is prepared by melt extrusion of PE-g-MAH, hexamethylenediamine, and bimodal PE100 resin.

The application discloses a preparation method of ilaprazole, and belongs to the field of drug synthesis. The ilaprazole is synthesized from 5-(1H-pyrrol-1-yl)-2-mercaptobenzimidazole and 3-methyl-4-methoxy-2-chloromethylpyridine hydrochloride through two-step reaction. The preparation method is mild in process condition, good in quality, high in yield, and suitable for large-scale production.