Abstract: The present invention relates to pegylated 7-dehydrocholesterol derivatives, and a composition for wrinkle alleviation and anti-aging comprising the same. The pegylated 7-dehydrocholesterol derivatives according to the present invention have improved stability and solubility in water, and thus can be effectively used as a good source for supplying vitamin D in a cosmetic composition, a pharmaceutical composition and a functional food for wrinkle alleviation and anti-aging.

Abstract: The present invention relates to an electrolyte comprising a non-ionic surfactant and a lithium ion battery using the same, and more particularly, to a non-aqueous electrolyte for a lithium ion battery comprising a fluorine-based non-ionic surfactant. The lithium ion battery prepared according to the present invention uses an electrolyte comprising a fluorine-based non-ionic surfactant that is substituted with various functional groups at the end group as represented by a fluorine-based non-ionic surfactant represented by a Formula: wherein, R is hydrogen, an acetyl group, a methyl group or a benzoyl goup; and m and n are integers from 2 to 20. The surfactant can improve the interfacial property between an electrolyte and electrodes and impedance properties, and exhibits a high capacity and excellent charge/discharge properties.

Abstract: The present invention relates to an electrolyte comprising non-ionic surfactant and a lithium ion battery using the same, and more particularly, to a non-aqueous electrolyte for a lithium ion battery comprising a fluorine-based non-ionic surfactant. The lithium ion battery prepared according to the present invention uses an electrolyte comprising a fluorine-based non-ionic surfactant that is substituted with various functional groups at the end group as represented by Formula 1, which can improve an interfacial property between an electrolyte and electrodes and impedance properties and exhibits a high capacity and excellent charge/discharge properties.

Abstract: Provided with a novel ascorbic acid derivative represented by the formula (I) and a method for preparing the same: wherein R1 and R2 are different from each other and, independently H or —CH2CH2—(O—CH2—CH2)n—OR3, wherein n is an integer from 2 to 400; and R3 is a lower alkyl group having 1 to 10 carbon atoms. The novel ascorbic acid derivatives of this invention have excellent characteristics such as long-lasting anti-oxidation effect, high solubility in both water and organic solvents, and high stability in an aqueous solution. Furthermore, the novel ascorbic acid derivatives are useful for feed, food, cosmetic and pharmaceutical products due to their low toxicity and high thermal stability.

Abstract: The present invention relates to a polyethoxylated retinamide derivative represented by formula (I), which is useful as an agent for inhibiting skin aging; in R represents hydrogen or C1-6 lower alkyl and n denotes the number of 2 to 100, and the process for preparing the compound of formula (I) as an effective component.