| 摘要 |
PURPOSE:To obtain an expandable tablet capable of dissolving in water while dropping and expanding on pouring into water without forming a zone with a high concentration of chlorine at the bottom of a container, by incorporating a dichloroisocyanurate with a carbonate, etc. as a foaming agent and a solid acid, compressing and granulating the resultant mixture, tableting the granulated mixture. CONSTITUTION:(A) Sodium or potassium dichloroisocyanurate having 20-300mu, preferably 40-150mu fine particle diameter is incorporated with (B) a salt selected from sodium or potassium hydrogencarbonate or sodium or potassium sesquicarbonate having the same particle diameter range and (C) a solid organic or inorganic acid having the same particle diameter range, and the resultant mixture is uniformly mixed, compressed and granulated by a dry pressure roll to give a granular material having preferably 200-3,300mu grain diameter, which is then tableted to afford the aimed expandable tablet. The mixing ratios of the respective components are as follows; 100pts.wt. component (A), 10-400pts.wt., preferably 20-200pts.wt. component (B) and 10-400pts.wt., preferably 20- 200pts.wt. component (C). In this case, proper expansion and dispersion performance can be imparted.
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