| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fiber exhibiting highly durable skin-care effect and comprising slow release of an amino acid derivative and the wash resistance of the amino acid derivative. <P>SOLUTION: The fiber slowly releasing an amino acid derivative is produced by applying an element selected from the group consisting of magnesium, barium, zirconium, silver, zinc, aluminum and titanium and an amino acid derivative to a fiber made of a polymer containing an acid group. The dissolution rateαof the amino acid derivative measured by immersing the fiber in synthetic sweat is≥10% and the residual ratio of the amino acid derivative in the fiber after repeating the washing 20 times is≥10%. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
