| 摘要 |
PURPOSE:To obtain the titled granular composition, containing a specific amount of calcium hypochlorite, rich in handleability and useful for sterilizing and disinfecting water, simply by grading and drying cylindrical molded articles which are ellipsoids having a specific shape and prepared by extrusion molding. CONSTITUTION:A calcium hypochlorite composition obtained by extruding a wet calcium hypochlorite composition containing >=40wt.% calcium hypochlo rite and 25-45wt.% moisture through a die having 0.3-5mm hole diameter to form cylindrical molded articles having 0.5-20mm length [1.5<ratio (major axis/minor axis)<=5], then grading the resultant until the moisture content attains 4-22wt.%. The composition is particularly useful in a large amount for sterilizing water in swimming pools and production process is simple to provide a low production cost. Furthermore, the composition has high resistance to breakage or collapse by friction or mutual collision even in loading and transporting and eliminates health disorder, e.g. respiration or eye irritancy, unpleasant feeling, etc., of users.
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