Calcium hypochlorite compositions comprising zinc salts and...

C - Chemistry – Metallurgy – 02 – F

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C02F 1/68 (2006.01) C02F 1/50 (2006.01) C02F 1/76 (2006.01) C01B 11/06 (2006.01)

Patent

CA 2683081

The present invention is directed to a granular water treatment composition, comprising: 35-95 wt% calcium hypochlorite; 1 to 50 wt% magnesium sulfate or a hydrate thereof; 0.1 to 10 wt% lime; and 0.1 to 55 wt% of a water soluble zinc salt or a hydrate thereof; wherein the weight percents are based on the total weight of the composition. The present invention is also directed to a water treatment tablet, comprising 35-95 wt% calcium hypochlorite; 1 to 50 wt% magnesium sulfate or a hydrate thereof; 0.1 to 10 wt% lime; and 0.1 to 10 wt% of a water soluble zinc salt or a hydrate thereof; wherein the weight percents are based on the total weight of the composition.

La présente invention porte sur une composition granulaire de traitement de l'eau, comprenant 35-95 % en poids d'hypochlorite de calcium; 1 à 50 % en poids de sulfate de magnésium ou d'un hydrate de celui-ci; 0,1 à 10 % en poids de chaux; et 0,1 à 55 % en poids d'un sel de zinc soluble dans l'eau ou d'un hydrate de celui-ci, les pourcentages en poids étant basés sur le poids total de la composition. La présente invention porte également sur un comprimé de traitement de l'eau comprenant 35-95 % en poids d'hypochlorite de calcium; 1 à 50 % en poids de sulfate de magnésium ou d'hydrate de celui-ci; 0,1 à 10 % en poids de chaux; et 0,1 à 10 % en poids d'un sel de zinc soluble dans l'eau ou d'un hydrate de celui-ci, les pourcentages en poids étant basés sur le poids total de la composition.

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