| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antimicrobial polyester fiber having excellent antimicrobial properties and whiteness, effectively usable by processing into clothing, bedding, etc., without interfering in dyeability, etc., by subjecting a polyester fiber supporting a silver-based inorganic antimicrobial agent to an alkali weight-loss treatment by using an alkali aqueous solution containing a specific color change inhibitor. SOLUTION: A polyester fiber supporting a silver-based inorganic antimicrobial agent being preferably a compound of the formula: AgaM1bM22(PO4)3.nH2O (M1 is an alkyli metal ion or the like; M2 is a tetravelent metal such as Ti, Zr or the like; n is 0<=n<=6; a and b are each a positive number satisfying a+b=1) is subjected to an alkali weight-loss treatment by using an alkali aqueous solution containing at least one kind of a color change inhibitor selected from hydrogen peroxide, sodium percarbonate and sodium peroxide to give the objective antimicrobial polyester fiber. |
