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US 4,385,077 AGranted
Asbestos treatment with metal oxides
AssigneeThe Dow Chemical Company
InventorsPaul A. Pezzoli, Stanley F. Spangenberg
Life of this patent
Estimating the term…
Abstract
A method of treating asbestos comprising depositing on at least a portion of the asbestos a material consisting essentially of an oxide of at least one metal selected from the group consisting of first series transition metals, second series transition metals, and group II B metals.
Claims2
A method of reducing the hemolytic activity of fibrous asbestos which is inhaled by humans or animals which comprises:
- employing as the asbestos source fibrous asbestos the surfaces of which are coated with an effective amount of cadmium oxide whereby the hemolytic activity of the asbestos which is inhaled by humans or animals is reduced.
A method of reducing the hemolytic activity of fibrous asbestos which is inhaled by humans or animals which comprises:
- employing as the asbestos source fibrous asbestos the surfaces of which are coated with an effective amount of chromium oxide or manganese peroxide whereby the hemolytic activity of the asbestos which is inhaled by humans or animals is reduced.
Dependencies are inferred from the claim text.