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US 5,211,871 AGranted
Water treatment agent
AssigneeImperial Chemical Industreis PLC
InventorJames D. Birchall
Life of this patent
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Abstract
An agent for the treatment of water containing dissolved aluminum comprises a particulate alkali metal or quaternary ammonium silicate, the particles having a coating of a water-insoluble silicate over at least a part of their surface, and a process of treating water which comprises dissolving the agent in the water.
Claims9
An agent for the treatment of water containing dissolved aluminium which agent comprises a particulate alkali metal or quaternary ammonium silicate, the particles having a coating of a water-insoluble silicate over at least a part of their surface.
Dependencies are inferred from the claim text.