Alkali-activated coatings for proppants
AssigneeGeoproppants Inc.
InventorThomas Urbanek
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Abstract
The present invention relates to proppants and the manufacture of proppants by contacting a substrate with an alkali-activated composition that cures to form a continuous polymer coating.
Claims33
A proppant comprising a particulate substrate and one or more layers of a coating around the surface of the particulate substrate, wherein the coating, excluding the composition of fillers and other auxiliary components, comprises an alkali-activated binder with a molar ratio of SiO2/Al2O3 ranging from 1 to 20.
A proppant comprising a particulate substrate and one or more layers of a coating around the surface of the particulate substrate that reacts and cures at temperatures between 20° C. and 500° C., and forms an inorganic polymer.
Dependencies are inferred from the claim text.