| 摘要 |
PROBLEM TO BE SOLVED: To provide a vitreous antimicrobial agent exhibiting a high antimicrobial property by blending with various resins and also excellent in discoloration resistance, hot water resistance, etc. SOLUTION: The vitreous antimicrobial agent having a specific composition which contains ZnO in high concentration and which is obtained by properly adjusting contents of Ag<SB>2</SB>O, SiO<SB>2</SB>, B<SB>2</SB>O<SB>3</SB>, alkaline earth metal oxide and Na<SB>2</SB>O has the high antimicrobial property and also excellent hot water resistance and discoloration resistance. The vitreous antimicrobial agent contains 0.1-5 mass% Ag<SB>2</SB>O, 60-70 mass% ZnO, 5-10 mass% SiO<SB>2</SB>, 1-10 mass% alkaline earth metal oxide and 6-15 mass% Na<SB>2</SB>O. COPYRIGHT: (C)2003,JPO
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