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100 results about "1h benzotriazole" patented technology

1H-Benzotriazole is an anticorrosive agent, which is useful in aircraft deicing and antifreeze fluids. It is also employed in dishwasher detergents. Further, it is used as a restrainer in photographic emulsions and also useful as a reagent for the determination of silver in analytical chemistry.

Acidic environment-friendly cleaning agent and preparation method thereof

The invention relates to an acidic environment-friendly cleaning agent and a preparation method thereof. The acidic environment-friendly cleaning agent comprises, counted by 100 parts, 10-40 parts ofphosphoric acid, 2-20 parts of 1-hydroxyethylidene 1,1-diphosphonic acid, 0.1-10 parts of phytic acid, 0.5-10 parts of other organic acids, 1-10 parts of an oxidizing agent, 0.2-5 parts of a polymericdispersing agent, 0.1-2 parts of an organic corrosion inhibiting agent, 0.5-2 parts of an organic penetrating agent and the balance of water. The other organic acids can be citric acid, oxalic acid,tartaric acid, formic acid, acetic acid and the like. The oxidizing agent can be sodium nitrate, zinc nitrate, calcium nitrate and the like. The polymeric dispersing agent can be polyvinyl alcohol 1688, polyethylene glycol 2000, polymaleic anhydride and the like. The organic corrosion inhibiting agent can be thiourea, imidazoline oleate, 1H-benzotriazole and the like. The organic penetrating agentcan be JFC, alkylphenol ethoxylates, nonylphenol ethoxylates and the like. The cleaning agent has the function of removing scale and removing rust, no waste gas is generated in the cleaning process,and the technical effects of environment friendliness and increasing of the cleaning quantity can be achieved.
Owner:东莞市颖兴金属表面处理材料有限公司

Biscyclopeptide E(c(RGDfK))2 and preparation method thereof

The invention discloses a biscyclopeptide E(c(RGDfK))2 and a preparation method thereof. The method comprises the following steps: 1) immersing resin and Fmoc-Asp-oall (Fmoc-L-aspartic acid alpha-allyl ester )in DCM (dichloromethane), adding DIEA (N,N-diisopropylethylamine), carrying out a contact reaction, and washing the obtained reaction product; 2, adding DCM, methanol and DIEA to the above obtained system, carrying out end capping treatment, and adding piperidine to carry out deprotection; 3) adding G (glycine), HoBt (1-hydroxybenzotriazole) and TBTU (2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate) to the reaction system, and carrying out a contact reaction; 4) sequentially adding R (arginine), K (lysine) and f (phenylalanine) into the reaction system, carrying out a contact reaction, adding Pd(PPh3)4, carrying out a propenyl group removal reaction, and adding piperidine to carry out deprotection; 5) adding DIEA, HoBt and HBTU into the system, carrying out a contact reaction, adding a hydrazine hydrate and DMF mixed solution, carrying out a secondary reaction, and washing the obtained reaction product to remove Dde; 6) dropwise adding Fmoc-Glu-OH, HoBt, DMF and TBTU to the reaction system, carrying out a contact reaction, and washing the obtained reaction product; and 7) adding piperidine to the reaction system to carry out deprotection, washing the obtained product with DMF, DCM and methanol, and carrying out post-treatment to obtain the biscyclopeptide E(c(RGDfK))2. The biscyclopeptide E(c(RGDfK))2 has excellent stability.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE

Energy-saving heating superconductive liquid

InactiveCN102191019AFast heat conductionLarge latent heat of vaporizationHeat-exchange elementsSodium metasilicateHigh energy
The invention discloses energy-saving heating superconductive liquid, which comprises potassium dichromate, sodium nitrite, sodium tetraborate, silicone oil, methyl-1H-benzotriazole, sodium metasilicate, triethanolamine and water, wherein the ratio of potassium dichromate to sodium nitrite to sodium tetraborate to silicone oil to methyl-1H-benzotriazole to sodium metasilicate to triethanolamine in the superconductive liquid is 3:1:10:1:1:1:2. The energy-saving heating superconductive liquid has the advantages that: noises are eliminated in a flowing process, heat can be transferred within 30 minutes which is improved by 50 percent than that required by water, and energy is saved by 30 percent; heat can be transferred by a single pipe or double pipe, and the energy-saving heating superconductive liquid can be used permanently when added once; when heating is suspended, the heating radiators and terrestrial heat heating equipment are protected from being damaged by freezing below 30 DEG C; latent heat of vaporization is high, and when the superconductive liquid undergoes high-energy physical change under heat, radiation is performed to raise temperature quickly and the starting temperature is very low; while a water heating system using water for heat transfer has the drawbacks of slow temperature rise and slow transfer; therefore, temperature rises immediately when the energy-saving heating superconductive liquid is heated, a great convenience is brought to users, and preheating time is saved.
Owner:孟令启

Compound organic solderability preservatives (OSP) treating agent for lead-free printed circuit board (PCB)

The invention discloses a compound organic solderability preservatives (OSP) treating agent for a lead-free printed circuit board (PCB). The compound OSP treating agent comprises, by weight, 0.5%-5% of 1H-Benzotriazole, 0.5%-2.5% of 2-Ethylbenzimidazole, 1%-5% of 2-heptyl-5nitrobenzimidazole, 0.2%-1.4% of 1-phenyl-5-sulfenyl tetrazole, 1%-4% of sulfanilamide thioglycoic acid, 0.1%-0.5% of copper acetate, 0.1%-0.5% of copper formate, 1%-5% of potassium iodide, 0.1%-1% of ammonia water, 4%-12% of organic acid, 1%-8% of a solubilizer, 0.1%-1% of a buffering agent, and the balance water. By means of the compound OSP treating agent, OSP which are high in adhesive force, resistant to oxidation, resistant to high temperatures, compact and transparent can be smoothly formed on the surface of a copper circuit on the PCB, a formed film is uniform and flat, heat shock resistance is good, and the treating agent is suitable for machining of single-faced and double-faced boards; a solution is stable, maintenance is easy, the operation temperature of the aqueous solution can be controlled to be 80 DEG C or lower, bending deformation of a substrate is avoided, operation cost is low, and the rate of finished products is high.
Owner:滁州嘉泰科技有限公司
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