| 摘要 |
<p>PURPOSE:To obtain an antibacterial zeolite having excellent antibacterial activity and causing little discoloration and color change with time when compounded to a resin by introducing silver ion and a bivalent metal ion to a zeolite by ion-exchange treatment. CONSTITUTION:The antibacterial zeolite of formula is produced by introducing silver ion and a bivalent metal ion to a zeolite by ion-exchange treatment. In the formula, 1.8<=m<=10, 0<=n<=5, M' is bivalent metal of group IIA, group IB or group IIB of the periodic table and M'' is an alkali metal. x, y and z satisfy the relationships 0.8<=x+y+z<=1.2; 0<x<=0.2, y>=0.2; z<=0.7 and y/z<=20 (molar ratio) and the weight ratio of Cl/Ag is <=0.01. The obtained antibacterial zeolite is suitable for imparting antibacterial activity to synthetic resin, rubber, paper, textile, feed, food, etc.</p> |
