14 results about "Sodium tartrate" patented technology

This invention proposes a sperm staining kit based on a sequential staining strategy of tail pre-staining – rapid differentiation – enhanced nuclear staining. A gentle fixation with 4% paraformaldehyde and acetate buffer preserves the complete nucleic acid of the sperm head and the protein structure of the tail. The addition of PVP K30 and Tween-20 effectively inhibits non-specific adsorption and reduces staining background interference. Brilliant Green SF combined with sodium tartrate is used for specific staining of the sperm tail, followed by rapid differentiation to wash away non-specific staining. Nuclear staining is performed using toluidine blue O combined with sodium chloride and sodium tetraborate hydrate, specifically binding to DNA and enhancing color development stability, resulting in a blue sperm head and a light green tail with clear color contrast. This invention produces a clean staining background, accurately distinguishing the morphology of the sperm head, acrosome, and tail, significantly improving the accuracy of microscopic identification of abnormal sperm such as large-headed, small-headed, curled-tailed, broken-tailed, and short-tailed sperm. It is suitable for detecting sperm morphology and abnormality rates in breeding males.

The application belongs to the technical field of pharmaceutical preparations, and particularly relates to an indocyanine green preparation and a preparation method and application thereof. The preparation is a liquid preparation or a freeze-dried preparation, raw materials for preparing the preparation include indocyanine green, phospholipid, cholesterol, a freeze-drying protective agent, water and a pH regulator, the pH regulator is selected from one or more of sodium citrate, potassium citrate, sodium tartrate, sodium acetate, sodium lactate and sodium succinate, and the pH of the preparation is adjusted to 6.0-8.5. By means of a specific organic acid salt buffer system and a specific preparation process (the freeze-drying protective agent is added before lipid film deposition), the application can specifically inhibit the growth of impurities with RRT 0.7 and RRT 0.3, respectively, and significantly improve the chemical stability of the preparation. Meanwhile, the preparation can realize accurate positioning of sentinel lymph nodes and second and third lymph nodes, and can be used for preparing a lymph tracer. The application effectively solves the technical problems of rapid impurity growth, poor stability and inaccurate multi-stage lymph positioning of the existing ICG preparation.

The invention relates to the technical field of batteries, in particular to a battery monomer, a preparation method of a secondary battery, an electrolyte and an electric device. Each single battery comprises a positive pole piece, a negative pole piece and an electrolyte, at least partial structures of the positive pole piece and the negative pole piece are located in the electrolyte, the electrolyte comprises a metal ion complexing agent, and the metal ion complexing agent comprises an organic complexing agent and / or an inorganic complexing agent; the organic complexing agent comprises at least one of phenanthroline, a crown ether compound, oxalic acid, citric acid, tartaric acid, ethylenediamine tetraacetic acid and deferoxamine; and / or the inorganic complexing agent comprises at least one of sodium oxalate, sodium citrate, sodium tartrate and sodium ethylene diamine tetracetate. The metal ion complexing agent in the electrolyte can be combined with impurity metal ions in the electrolyte to form a stable complex, so that the risk that the impurity metal ions are separated out into dendritic metal foreign matters at an anode to pierce a diaphragm to cause self-discharge of the battery is reduced.

The invention relates to the technical field of fine chemical engineering, in particular to a method for green production of D-tartaric acid by a double-compartment bipolar membrane process, which comprises the following steps: preparing a raw material sodium tartrate solution generated by hydrolysis of a sodium epoxysuccinate solution through a strain into a raw material solution with the mass concentration of 7-8.5%, and carrying out electrodialysis on the raw material solution through a double-compartment bipolar membrane electrodialysis device to obtain D-tartaric acid. Directional ion migration is realized under the action of direct current; sodium ions enter an alkali side through a positive membrane and are combined with hydroxyl ions generated by dissociation of a bipolar membrane to generate a sodium hydroxide solution with the mass concentration of 3-4%; hydrogen ions enter an acid side through the bipolar membrane and are combined with tartrate ions to generate a D-tartaric acid solution, and a D-tartaric acid finished product is obtained through subsequent concentration and drying; through the mode, one-step conversion from sodium tartrate to D-tartaric acid is realized, the cost is reduced, and the yield is improved.

This invention relates to the field of functional textile materials technology, specifically disclosing a nonwoven fabric with both flame-retardant and anti-aging properties and its preparation method. A functional filler is filled into the porous structure of the nonwoven fabric; the functional filler is a magnesium-aluminum double hydroxide with a flower-like structure, and its surface is loaded with nanoparticles of tin-doped cerium dioxide. A high specific surface area magnesium-aluminum double hydroxide is prepared by a hydrothermal method using urea and sodium tartrate in synergistic regulation; further, tin-doped cerium dioxide nanoparticles are grown in situ on its surface by a hydrothermal method, forming a unique "flower-particle" composite structure. The layered magnesium-aluminum double hydroxide exhibits excellent flame-retardant and smoke-suppressing effects, while the tin-doped cerium dioxide efficiently absorbs ultraviolet light, significantly improving anti-aging properties. The synergy of these two components endows the nonwoven fabric with excellent and long-lasting flame-retardant and UV-aging-resistant properties, making it suitable for high-end applications such as special protection, outdoor sunshade, and construction.

The invention discloses a composite cleaning agent for a screw of an injection molding machine as well as a preparation method and application of the composite cleaning agent, and relates to the field of cleaning agents. The water-based adhesive comprises the following components: 15-25% of azodicarbonamide, 8-12% of a water-soluble azo initiator, 8-12% of a fluorinated surfactant, 3-7% of triethanolamine oleate, 3-7% of diphenylmethane diisocyanate, 12-18% of sodium tartrate, 12-18% of sodium carbonate and the balance of alkaline ionized water. According to the composite injection molding machine screw cleaning agent and the preparation method and application thereof, stubborn residues such as pigment and carbon black can be rapidly removed through multiple synergistic effects, and the cleaning time can be shortened to 5-20 minutes; the consumption of resin for cleaning is greatly reduced, and tests show that the resin cleaning cost can be saved by up to 85% and the time cost can be saved by 80%.

The invention discloses an alkali polishing additive for silicon wafers. The alkali polishing additive comprises organic amine, a complexing dispersant, inorganic salt and a surfactant. The organic amine is one or more of dichloroaniline, diethanol amine and dimethylamine, and the organic amine is 1-5 parts. The complexing dispersant is one or more of sodium benzoate, sodium alginate and sodium citrate, and the complexing dispersant is 3-8 parts. The inorganic salt is one or more of sodium sulfate, lauryl sodium sulfate, sodium pyrosulfate and sodium tartrate, and the inorganic salt is 1-5 parts. The surfactant is one or more of dodecyl dimethyl betaine, sodium alkyl naphthalene sulfonate and alkyl glycoside, and the amount of the surfactant is 5-8 parts; the additive also comprises deionized water; according to the silicon wafer alkali polishing additive, the organic amine is added, the back polishing effect of the same tower footing is obtained under the condition of low weight loss, the battery efficiency is improved, meanwhile, the additive synthesis device can stir and dissolve all the raw materials evenly, and the alkali polishing additive is obtained.

The invention relates to the technical field of medicine, in particular to a metal ion complexing agent, a metronidazole gel preparation thereof and a preparation method of the metronidazole gel preparation. The first component is selected from at least one of disodium edetate, sodium calcium edetate and tetrasodium edetate; the second component is selected from at least one of sodium tartrate and sodium citrate; wherein the mass ratio of the first component to the second component is (8: 1)-(1: 6). The metronidazole gel preparation has the advantages that the preparation process is simple, the stability is better, and the safety and the effectiveness can be guaranteed.

This invention provides a method for preparing and applying a modified layered bimetallic hydroxide. The preparation method includes the following steps: Step 1, preparing a mixed solution of Ca(NO3)2 and Al(NO3)2, labeled as solution A, and preparing a mixed solution of NaNO3 and NaOH, labeled as solution B; Step 2, adding solution A dropwise to solution B to obtain a mixed slurry; Step 3, hydrothermal reaction; Step 4, cooling, centrifuging, washing, and drying for later use; Step 5, preparing a sodium tartrate solution and adjusting the pH; Step 6, mixing the solid sample obtained in Step 4 and the solution obtained in Step 5, and stirring; Step 7, centrifuging, washing, and drying. This invention enables the embedding of environmentally friendly tartrate ions into a calcium-aluminum layered bimetallic hydroxide. Chloride ions in a corrosive environment can enter the interlayer of the layered bimetallic hydroxide to reduce the concentration of free chloride ions in the system. Simultaneously, tartrate ions are released from the interlayer, forming an adsorption film on the surface of the metal substrate.

The invention discloses a preparation method of an Al2O3 microsphere loaded nickel metal bifunctional catalyst with a high specific surface area and application of the Al2O3 microsphere loaded nickel metal bifunctional catalyst in hydrodeoxygenation reaction of biomass derivatives. According to the preparation method, sodium tartrate is taken as a template agent, urea is taken as a precipitator, Al2 (SO4) 3.18 H2O is taken as an aluminum source, Al2O3 microspheres are prepared by adopting a hydrothermal method, then active metal is loaded on an Al2O3 microsphere carrier by adopting an impregnation method, and the Ni / Al2O3 catalyst is synthesized through calcination reduction. The catalyst can efficiently catalyze catalytic transfer hydrogenation (CTH) of biomass derivative compounds such as levulinic acid (LA) to prepare an important chemical intermediate gamma-valerolactone. According to the invention, on the basis that Al2O3 is an acidic site, the active metal component is introduced, so that the catalyst shows good hydrodeoxygenation activity and selectivity of a target product in the reaction process, and efficient hydrodeoxygenation of levulinic acid is realized. The prepared Ni / Al2O3 catalyst has the characteristics of simple preparation process, low cost, mild reaction conditions, high catalytic activity and the like. Even in the absence of exogenous H2, the catalyst can effectively catalyze the cascade reaction of esterification and hydrogenation lactonization, improves the safety of the reaction operation process, and has a good application prospect.

To provide a main material that can maintain excellent fluidity when made into a slurry, even in low-temperature environments such as winter. [Solution] A main material for use in a two-component hydraulic composition for 3D printers is provided, wherein the main material comprises a binder, a water-reducing agent, a retarder, and fine aggregate, the binder comprises cement and silica fume, the retarder comprises sodium gluconate and sodium L-tartrate, the content of the retarder is 0.5 parts by mass or more per 100 parts by mass of the binder, and the mass ratio α of the content of sodium L-tartrate to the content of sodium gluconate is 1.0 or more.

The invention provides a combined inhibitor for flotation separation of copper-zinc sulfide ore and application of the combined inhibitor. The combined inhibitor comprises sodium tartrate and zinc sulfate. According to the application of the combined inhibitor for flotation separation of the copper-zinc sulfide ore in flotation separation of the copper-zinc sulfide ore, the application comprises the following steps that firstly, after a copper-zinc sulfide ore sample is crushed and ground, pulp mixing is conducted, and copper-zinc sulfide ore pulp is obtained; secondly, a pH regulator, a combined inhibitor, a roughing collecting agent and a foaming agent are sequentially added into the copper-zinc sulfide ore pulp in the first step, and roughing copper concentrate and roughing zinc concentrate are obtained; and thirdly, a combined inhibitor is added into the roughed copper concentrate obtained in the second step for first-time concentration, then the combined inhibitor is added for second-time concentration, and final copper concentrate is obtained. According to the method, the content of zinc in the copper concentrate is greatly reduced while the copper recovery rate is guaranteed, and the recovery rate of copper and zinc resources is effectively increased. Compared with a single zinc sulfate inhibitor or a sodium tartrate inhibitor, the copper-zinc separation efficiency is high, and the dosage of the combined inhibitor is greatly reduced.

The invention provides a preparation method of a gas-phase antirust film for carbon steel, and belongs to the technical field of rust prevention, the preparation method comprises the following steps: taking potassium sodium tartrate, sodium tungstate and polyaspartic acid, and carrying out microencapsulation treatment by using sodium silicate to obtain silicate microcapsules; maleic anhydride grafted PP (polypropylene) and LDPE (low-density polyethylene) are jointly used as base materials, and n-decanoic acid and the silicate microcapsules are added, so that the gas-phase antirust film for the carbon steel is prepared. According to the prepared gas-phase antirust film for the carbon steel, LDPE, PE-g-MAH, n-decanoic acid and a silicate microcapsule system can play a role at the same time on the two time scales of short-term rapid inhibition and long-term continuous rust prevention, and the efficient and environment-friendly gas-phase antirust film for the carbon steel with good mechanical performance is formed.

The invention discloses a particle flow regulator and a preparation method and application thereof, and belongs to the technical field of oilfield chemistry. The invention discloses a particle flow regulator. Comprising the following components in parts by weight: 0.3-2 parts of aminated carbon quantum dot dispersion liquid, 20-35 parts of water-based organic silicon modified high-temperature-resistant resin emulsion, 2-5 parts of sodium dodecyl diphenyl ether disulfonate, 1-4 parts of caprolactam blocked isophorone diisocyanate, 1-4 parts of polyoxyethylene-polyoxypropylene ether segmented copolymer, 1-3 parts of alkaline silicon-aluminum sol, 0.5-2 parts of silane coupling agent and 0.5-2 parts of sodium tartrate. 0.5 to 2 parts of sulfonated polyether ether ketone, 0.1 to 0.5 part of isothiazolinone derivative and 0.1 to 0.5 part of defoaming agent. In addition, the invention further provides a preparation method of the particle flow regulating agent and application of the particle flow regulating agent in profile control and water plugging of an oil field. The particle flow regulator provided by the invention realizes delayed formation of high-strength and non-flowing plugging particles.