Calcium hypochlorite composition and process for preparation the

Details Calcium hypochlorite composition and process for preparation the Calcium hypochlorite composition and process for preparation the

1987-11-18

1989-09-05

Stoll, Robert L.

Chemistry of inorganic compounds

Halogen or compound thereof

Ternary compound

2521873, 25218728, 264 15, 264148, 264162, C01B 1106, B29C 4700

Patent

active

048637092

ABSTRACT:
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. %.

REFERENCES:
patent: 2195755 (1940-04-01), Robson et al.
patent: 2195757 (1940-04-01), Robson et al.
patent: 3544267 (1970-12-01), Dychdala
patent: 3669894 (1972-06-01), Faust
patent: 4276349 (1981-06-01), Saeman

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