37 results about "Ethylenediamine tetra-acetate" patented technology

The purpose of the present invention is to provide an electroless gold plating solution which does not contain harmful substances and is capable of achieving good wire bonding performance, while suppressing corrosion of a base metal. In order to achieve this purpose, an electroless plating solution that contains a water-soluble gold compound, citric acid or a citrate, ethylenediaminetetraacetic acid or an ethylenediaminetetraacetate, hexamethylenetetramine and a chain polyamine containing three or more amino groups and an alkyl group having three or more carbon atoms is employed as a reduction-type electroless gold plating solution which is used for the purpose of forming an electroless gold plating film on the surface of an object to be plated by means of electroless plating.

The invention discloses a preparation method of a prussian white analogue with low defects and low water content, the chemical formula of the prussian white analogue is KxMn[Fe(CN)6]1-y.zH2O, the value range of x is 1.7-2.0, the value range of y is 0-0.05, and the value range of z is 0.05-0.3. The preparation method comprises the following steps: dissolving potassium ferrocyanide in water to obtain a solution A; dissolving a soluble divalent manganese salt and a complexing agent ethylenediamine tetraacetic acid salt in water to obtain a solution B; and adding the solution B into the solution Aunder the conditions of reaction atmosphere and stirring the mixed solution at room temperature, and carrying out standing, filtering, washing and drying treatment to obtain the low-defect and low-water-content Prussian white analogue. According to the invention, the Prussian white analogue with low defect and low water content is prepared by adopting a complexing-assisted synthesis method, so that the thermal stability of the material and the electrochemical cycling stability of the material in a potassium ion battery are improved.

The invention discloses a cyanide-free silver-based composite plating solution, a silver-based composite plating layer and a preparation method of the silver-based composite plating layer. The cyanide-free silver-based composite plating solution comprises silver nitrate, a multicomponent complexing agent, conductive salt, a buffering agent, a cationic surfactant, an additive and micro-nano particles; the multielement complexing agent takes triethylenetetramine or / and soluble salt thereof as a main complexing agent, and takes one or more of triethylenetetramine hexaacetic acid or triethylenetetramine hexaacetic acid salt, ethylenediaminetetraacetic acid or ethylenediaminetetraacetic acid salt, and citric acid or citrate as an auxiliary complexing agent; the concentration of the silver nitrate is 0.1-0.7 mol / L, the concentration ratio of the main complexing agent to the silver nitrate is 1-6:1, the concentration of the auxiliary complexing agent is 0.05-1 mol / L, the concentration of theconductive salt is 0.2-1.2 mol / L, the concentration of the cationic surfactant is 0.0005-0.003 mol / L, and the buffering agent is used for the pH value of the cyanide-free silver-based composite plating solution to be 1-7. The cyanide-free silver-based composite plating solution is stable, and the prepared silver-based composite plating layer has the functions of friction reduction and wear resistance and has good compactness.

The invention discloses an oil displacement system suitable for high-temperature and high-salt oil reservoirs. The oil displacement system is prepared according to the following method: in an inert atmosphere, in sodium formate, disodium edetate, ferrous sulfate, tetramethylethylenediamine, 4,4'-azobis (4-cyano Under the condition that base valeric acid), ammonium persulfate and hydrogen peroxide exist, monomer A, monomer B, monomer C, monomer D and inorganic component carry out copolymerization reaction in water, obtain gel; Said gel After chopping, add sodium silicate and sodium pyrophosphate, let stand to swell, dry and pulverize the swollen gel to obtain powder, which is the oil displacement system. The monomers adopted in the invention (all of which are acryloyloxy monomers) have relatively high activity, are easy to prepare high-molecular-weight products, have excellent viscosity-increasing properties, and are used in small amounts. The oil displacement system of the invention is easy to store and transport, and meets the requirements of environmental protection. The raw materials of the method of the invention are easy to obtain, and the preparation process is suitable for industrial production.

The invention discloses a nano-fiber curing agent for disintegrating carbonaceous mudstone and its preparation and use methods. The nano-fiber curing agent for disintegrating carbonaceous mudstone consists of the following parts by weight: 30-40 parts of cement , 2-5 parts of nanomaterials, 5-10 parts of organic gel, 0.5-1 parts of disodium edetate, 25-35 parts of slag, 2-6 parts of fiber materials, and 16-25 parts of water. The nano-fiber curing agent for disintegrating carbonaceous mudstone provided by the present invention is an inorganic-organic composite curing agent, and the cured disintegrating carbonaceous mudstone has unconfined compressive strength under the synergy of various components The advantages of high quality and good structural integrity realize the reuse of slag while reducing the amount of cement, low cost, energy saving and pollution reduction.

The invention belongs to the technical field of sanitary products, and in particular relates to a decontamination moisturizing baby wet tissue and a preparation method thereof. The wet tissue provided by the present invention includes a solution and a carrier, the solution uses water as the solute, and includes the following components in percentage by weight: 0.01%-0.05% of savantine, 1%-6% of cocoyl sodium glutamate, ethylene glycol Disodium amine tetraacetate 0.1‑0.3%, glycerin 3‑10%, preservative 1‑7%, acid 0.01‑0.2%, alkali 0.005‑0.1%, oat extract 0.01‑0.05%. The three substances added to the wet wipes, savantine, sodium cocoyl glutamate, and disodium ethylenediaminetetraacetate, act synergistically to achieve antibacterial, decontamination, and water retention capabilities, and can quickly remove milk on baby clothes. Stains, saliva stains, urine stains, etc.

The invention provides a collecting agent for collecting minerals of oxidized ores such as ilmenite and a preparation method thereof, and belongs to the technical field of mineral flotation collectingagents. The mineral flotation collecting agent for the oxidized ores such as ilmenite is used after ammonium dibutyl dithiophosphate, ethylenediaminetetraacetic acid salt, maleate, sodium oleate andthe like are mixed; and the mineral flotation collecting agent has the characteristics of good water solubility, good dispersion and high selective adsorption ability to objective minerals, and is mainly used for flotation separation of valuable minerals in the oxidized ores such as the ilmenite, scheelite and wolframite. The preparation method of the mineral flotation collecting agent for the oxidized ores is simple in process, operation is easy to control, the prepared collecting agent has the advantages of high selectivity, good dispersion, low agent dosage and high mineral separation comprehensive efficiency, and quite important significance for promoting mineral separation of the minerals such as the oxidized ores is achieved.

The present invention disclosed a stabilizer and preparation method for α -hydroxyl acid dehydrogenase testing kit, which belongs to the field of in vitro diagnostic.The stabilizer includes the following percentage components: 0.1 ~ 0.5 % ethyleine tetharolytic acid sodium, 1 to 3 % sucrose, 1 to 2 % Triton X‑100, 3 to 5 % CCD, 1 to 2 % glycerin, 0.1 ~ 0.2 % liquid biochemical PROCLIN300, the remaining amount of water.The stabilizer of the present invention is used in the α -hydroxyl acid dehydrogenase testing kit, which ensures the accuracy of the test results of the kit, and makes the alpha -hydroxyl acid dehydrogenase test box more stable, which can effectively extend the reagent reagentThe preservation time of the box.In addition, the cost of the stabilizer is low, the preparation is simple, and it is worth further promotion.

The invention provides a compound xiarazine injection and its preparation process. Put 100g of xylazine and 61-66g of ethylenediaminetetraacetic acid into double-distilled water, dissolve them at a temperature of 60-90°C, and prepare them according to the ratio of 5000-2500:1. Take dihydroetorphine hydrochloride and mix the solution evenly to make a mixed solution containing 100 mg of xylazine, 61-66 mg of ethylenediaminetetraacetic acid, and 10-20 μg of dihydroetorphine hydrochloride per ml, and fill it in an ampoule. Sterilized prepared. The invention provides a powerful braking drug for anesthesia and braking of wild animals, which can be used in industrial production and promote artificial breeding and wild animal protection.

The invention discloses a cyanide-free silver-based composite plating solution, a silver-based composite plating layer and a preparation method of the silver-based composite plating layer. The cyanide-free silver-based composite plating solution comprises silver nitrate, a multicomponent complexing agent, conductive salt, a buffering agent, a cationic surfactant, an additive and micro-nano particles; the multielement complexing agent takes triethylenetetramine or / and soluble salt thereof as a main complexing agent, and takes one or more of triethylenetetramine hexaacetic acid or triethylenetetramine hexaacetic acid salt, ethylenediaminetetraacetic acid or ethylenediaminetetraacetic acid salt, and citric acid or citrate as an auxiliary complexing agent; the concentration of the silver nitrate is 0.1-0.7 mol / L, the concentration ratio of the main complexing agent to the silver nitrate is 1-6:1, the concentration of the auxiliary complexing agent is 0.05-1 mol / L, the concentration of theconductive salt is 0.2-1.2 mol / L, the concentration of the cationic surfactant is 0.0005-0.003 mol / L, and the buffering agent is used for the pH value of the cyanide-free silver-based composite plating solution to be 1-7. The cyanide-free silver-based composite plating solution is stable, and the prepared silver-based composite plating layer has the functions of friction reduction and wear resistance and has good compactness.

The present invention relates to a coagulation control composition, coagulation control agent and application thereof. The coagulation adjusting composition provided by the present invention mainly comprises gluconate, polyacrylate and ethylenediaminetetraacetate. By applying the setting modifier provided by the invention to the thermosetting resin cementing material system, the thickening time of the thermosetting resin cementing material at a temperature of 30 to 100° C. can be adjusted to exceed 150 minutes, and the safety cementing of medium and shallow oil and gas wells within 4000 m can be satisfied. need.