Organic-containing particulate having elevated auto-ignition temperatures
AssigneeW. R. Grace & Co.-Conn.
InventorVolker Petry
Life of this patent
Estimating the term…
Abstract
The composition of this invention is an inorganic oxide particulate comprising at least 10% by weight organic material in which the particulate has an auto-ignition temperature which is at least 20° C. higher than the auto-ignition temperature of the particulate and organic material which does not contain antioxidant and/or inhibitor. Accordingly, a method has been developed in which one is able to elevate the auto-ignition temperature of such organic containing particulates. In a preferred embodiment the method comprises including antioxidant or inhibitor in the organic material prior to combining it with the inorganic oxide.
Claims18
A plurality of discreet inorganic oxide particulates comprising a coating of organic material wherein said organic material is present in an amount of at least 10% by weight based on the weight of inorganic oxide and an antioxidant and/or inhibitor, wherein the particulates at a given volume have an auto-ignition temperature which is at least 20° C. higher than the auto-ignition temperature of base particulates, the base particulates being the particulates and organic material without an antioxidant or inhibitor.
A method of elevating auto-ignition temperatures of a plurality of discreet inorganic oxide particulates comprising a coating of organic material in an amount of at least 10% by weight based on the weight of inorganic oxide, the method comprising including anti-oxidant or inhibitor with the organic material-containing inorganic oxide in order to raise the auto-ignition temperature of the particulates at least 20° C. higher than the auto-ignition temperature of the particulates without the antioxidant or inhibitor.
Dependencies are inferred from the claim text.