C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/139, 18/768
C01B 11/06 (2006.01)
Patent
CA 1273776
CALCIUM HYPOCHLORITE COMPOSITION AND PROCESS FOR PREPARATION THEREOF ABSTRACT OF THE DISCLOSURE Disclosed is a granular calcium hypochlorite composition having a calcium hypochlorite content of at least 55 wt.% and composed of particles having an ellipsoidal shape in section, wherein at least 50 wt.% of the ellipsoidal particles have a short diameter of 0.3 - 5 mm, a long diameter of 0.5 - 20 mm, and a long diameter/short diameter ratio larger than 1.5 but not larger than 5. This composition is prepared by a process wherein a wet calcium hypochlorite composition comprising at least 40 wt.% of calcium hypochlorite and 25 - 45 wt.% of water is extruded through a die having an orifice diameter of 0.3 - 5 mm; the extrudate is cut to a length of 0.5 - 20 mm so that the length/orifice diameter ratio is larger than 1.5 but not larger than 5 to form columnar shaped particles; the columnar shaped particles are subjected to rolling granulation; and the resulting granules are dried until the water content is reduced to 4 - 22 wt.%.
552038
Murakami Tsugio
Saito Hiroyuki
Sakuma Masaru
Ridout & Maybee Llp
Tosoh Corporation
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