| 摘要 |
A water-soluble glass treating agent consisting essentially of, by weight: 55 to 80% of SiO2, 19.5 to 42% of Na2O and 0.5 to 3% of Ag2O (conversion for AgNO3) is disclosed. Also disclosed is a water-soluble glass treating agent further containing, by weight: 0.5 to 30% of Al2O3 in the above compositions. These glass water treating agents are glass free from boron constituent but which functions to kill or suppress bacteria and micro-organisms and are low in cost because it is simple in the composition of glass which is composed principally of three constituents at max. That agent which contains Al2O3 functions to increase concentration of Ag in glass and to decrease the deliquescent property of glass.
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