HUMECTANT AND EXTERNAL PREPARATION FOR SKIN USING THE SAME

PROBLEM TO BE SOLVED: To provide a humectant having high water solubility and excellent humectant properties, and an external preparation for the skin, using the humectant. SOLUTION: The humectant comprises a polyuronic acid obtained by selectively converting a primary hydroxy group of a polysacchar...

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Bibliographische Detailangaben
1. Verfasser:	OMORI YUMIKO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS POLYSACCHARIDES PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a humectant having high water solubility and excellent humectant properties, and an external preparation for the skin, using the humectant. SOLUTION: The humectant comprises a polyuronic acid obtained by selectively converting a primary hydroxy group of a polysaccharide to a carboxy group or a salt thereof by oxidizing the polysaccharide. The external preparation for the skin contains the humectant. The polyuronic acid obtained by oxidizing the polysaccharide comprising N-acetylglucosamine or a glucose, e.g. chitin or cellulose is preferably used. The weight average molecular weight of the polyuronic acid is preferably within the range of 5,000-200,000. COPYRIGHT: (C)2008,JPO&INPIT