4 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.

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.

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.

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.