Patent ID: 8216541

Claim:
A process for producing a dispersible nano graphene platelet (NGP) material, said process comprising: (a) preparing a pristine NGP material from a graphitic material, wherein said pristine NGP material is obtained from a process comprising a procedure selected from: a. intercalating said graphitic material with a non-oxidizing agent, followed by a thermal or chemical exfoliation treatment in a non-oxidizing environment; b. subjecting said graphitic material to a supercritical fluid environment for inter-graphene layer penetration and exfoliation; c. dispersing said graphitic material in a powder form to an aqueous solution containing a surfactant or dispersing agent to obtain a suspension and subjecting said suspension to direct ultrasonication; or a combination thereof; and (b) subjecting said pristine NGP material to an oxidation treatment to obtain said dispersible NGP material, wherein said NGP material has an oxygen content in the range from approximately 5 to 25% by weight without any chemical reduction procedure.