摘要:
An improved formation electrolyte and method for anodizing valve metal anodes used in electrolytic capacitors, particularly for high voltage sintered tantalum powder anode, is described. The anodizing electrolyte composition is comprised of 1) a phosphorus oxyacid and/or its salt, such as phosphoric acid and ammonium phosphate; 2) a weak inorganic acid/salt (such as boric acid, ammonium borate) or a weak carboxylic acid/salt; 3) water; and 4) a protic solvent or a mixture of two or more protic solvents. The weak mono-carboxylic acid/salt has 2 to 7 carbon atoms and the weak di- or poly-carboxylic acid/salt has 3 to 13 carbon atoms. The present electrolytes have high anodizing breakdown voltage capability and the formed dielectric oxides have improved oxide quality including good oxide hydration resistant ability, and result in more stable capacitor performance. These properties are particularly important for critical applications such as implantable cardioverter defibrillators (ICDs). Significantly, this means that fewer capacitors are needed to meet an ICD's operating voltage.
摘要:
The sensory attributes of cosmetic compositions are very important to form positive consumer's perception of the product. The sensory attributes can vary significantly depending on the formulation employed. In the present invention, a particularly beneficial balance of attributes was attained to create a usable viscoelastric composition that can be poured as a liquid matter, handled as a solid matter and applied to hair as a styling and conditioning product. This composition comprises a unique blend of ingredients in an aqueous medium which achieves the desired results.
摘要:
The sensory attributes of cosmetic compositions are very important to form positive consumer's perception of the product. The sensory attributes can vary significantly depending on the formulation employed. In the present invention, a particularly beneficial balance of attributes was attained to create a usable viscoelastric composition that can be poured as a liquid matter, handled as a solid matter and applied to hair as a styling and conditioning product. This composition comprises a unique blend of ingredients in an aqueous medium which achieves the desired results.