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20029 results about "Sodium" patented technology

Sodium is a chemical element with the symbol Na (from Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell, which it readily donates, creating a positively charged ion—the Na⁺ cation. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds. Sodium is the sixth most abundant element in the Earth's crust and exists in numerous minerals such as feldspars, sodalite, and rock salt (NaCl). Many salts of sodium are highly water-soluble: sodium ions have been leached by the action of water from the Earth's minerals over eons, and thus sodium and chlorine are the most common dissolved elements by weight in the oceans.

Catalyst for complete oxidation of formaldehyde at room temperature

The invention provides a high selectivity catalyst used for catalyzing and completely oxidizing formaldehyde with low concentration at room temperature. The catalyst can catalyze formaldehyde completely so as to lead the formaldehyde to be converted into carbon dioxide and water at room temperature. In addition, the conversion rate of formaldehyde remains 100% within a long period of time, without complex auxiliary facilities such as light source, a heating oven and the like, and external conditions. The catalyst comprises three parts which are inorganic oxide carrier, noble metal component and auxiliary ingredient. Porous inorganic oxide carrier is one of cerium dioxide, zirconium dioxide, titanium dioxide, aluminium sesquioxide, tin dioxide, silicon dioxide, lanthanum sesquioxide, magnesium oxide and zinc oxide or the mixture thereof or composite oxide thereof, zeolite, sepiolite and porous carbon materials. The noble metal component of the catalyst is at least one of platinum, rhodium, palladium, gold and silver. The auxiliary ingredient is at least one of the alkali metals of lithium, sodium, kalium, rubidium and cesium. The loading of the noble metal component used in the catalyst of the invention is 0.1 to 10% according to weight converter of metal elements and the selective preference is 0.3 to 2%. The loading of the auxiliary ingredient is 0.2 to 30% according to weight converter of metal elements and the selective preference is 1 to 10%. When the loading of the auxiliary ingredient is lower than 0.2% or higher than 30%, the activity of the catalyst for catalyzing and oxidizing formaldehyde at room temperature is decreased remarkably.

Penetration Enhancer Combinations for Transdermal Delivery

A high throughput screening and isolation system identifies rare enhancer mixtures from a candidate pool of penetration enhancer combinations. The combinations are screened for high penetration but low irritation potential using a unique data mining method to find new potent and safe chemical penetration enhancer combinations. The members of a library of chemical penetration enhancer combinations are screened with a high throughput device to identify “hot spots”, particular combinations that show higher chemical penetration enhancement compared to neighboring compositions. The irritation potentials of the hot spot combinations are measured to identify combinations that also show low irritation potential. A active component, such as a drug, is then combined with the combination in a formulation which is tested for the ability of the drug to penetrate into or through skin. It is then assessed whether the formulation can deliver the quantity of drug required, and animal tests are conducted to confirm in vivo the ability of the chemical penetration enhancer combinations to facilitate transport of sufficient active molecules across the skin to achieve therapeutic levels of the active molecule in the animal's blood. The invention provides specific unique and rare mixtures of chemical penetration enhancers that enhance skin permeability to hydrophilic macromolecules by more than 50-fold without inducing skin irritation, such as combinations of sodium laurel ether sulfate and 1-phenyl piperazine, and combinations of N-lauryl sarcosine and Span 20/sorbitan monolaurate.

Gradient cathode material for lithium rechargeable batteries

A composition suitable for use as a cathode material of a lithium battery includes a core material having an empirical formula LixM′zNi1−yM″yO2. “x” is equal to or greater than about 0.1 and equal to or less than about 1.3. “y” is greater than about 0.0 and equal to or less than about 0.5. “z” is greater than about 0.0 and equal to or less than about 0.2. M′ is at least one member of the group consisting of sodium, potassium, nickel, calcium, magnesium and strontium. M″ is at least one member of the group consisting of cobalt, iron, manganese, chromium, vanadium, titanium, magnesium, silicon, boron, aluminum and gallium. A coating on the core has a greater ratio of cobalt to nickel than the core. The coating and, optionally, the core can be a material having an empirical formula Lix1Ax2Ni1−y1−z1Coy1Bz1Oa. “x1” is greater than about 0.1 a equal to or less than about 1.3. “x2,”“y1” and “z1” each is greater than about 0.0 and equal to or less than about 0.2. “a” is greater than 1.5 and less than about 2.1. “A” is at least one element selected from the group consisting of barium, magnesium, calcium and strontium. “B” is at least one element selected from the group consisting of boron, aluminum, gallium, manganese, titanium, vanadium and zirconium.

Micro-nano coating material with low surface energy and preparation method thereof

ActiveCN106085070AEasy to control surface topographyEasy to control the size of the surface energyPolyurea/polyurethane coatingsPowdery paintsEtchingMicrosphere
The invention belongs to the technical field of functional materials, and particularly relates to a micro-nano coating material with low surface energy and a preparation method thereof. The preparation method comprises the following steps of mixing composite microspheres with micro sodium structure and hydrophobic nature, matrix resin with contact angle more than 90 degrees with coating film, solvent, powder, and additive, and adopting a co-mixing method, an in-situ emulsion polymerizing method, an in-situ solution polymerizing method, an in-situ concentration and polymerizing method, an in-situ addition and polymerizing method and the like, so as to prepare the coating material with micro-nano structure; performing spraying, brushing, roll coating, photo-etching, 3D (three-dimensional) printing, mechanical processing and the like, drying and curing at the temperature of 0 to 1000 DEG C, and coating the coating material with micro-nano structure onto different matrix surfaces, so as to obtain the micro-nano coating material with low surface energy and groove structure. The micro-nano coating material has the advantages that the preparation technology is simple, the coating hardness is high, the water-resistant property is good, the adhesion force to different matrix surfaces is strong, and the micro-nano coating material can be used for self-cleaning, resistance-reducing, denoising, anti-icing and other functional materials.
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