Patent ID: 7906177

Claim:
Method for providing a sheet of material having a hydrophobic and oleophobic polymer coating on at least one surface thereof, the method comprising the steps of: providing a sheet of material having a first surface and a second surface, the first surface and the second surface having a plurality of individual fibers, each of the individual fibers having at least one surface; providing an aqueous hydrophobic and oleophobic coating composition having a critical micelle concentration, the aqueous hydrophobic and oleophobic coating composition containing a surfactant and a hydrophobic and oleophobic polymer consisting of one monomer, the surfactant having a hydrophilic head group, a hydrophobic tail group and a concentration less than the critical micelle concentration; providing an initiator; coating at least one of the first and second surfaces of the sheet of material with the aqueous hydrophobic and oleophobic coating composition; and introducing the initiator into the aqueous hydrophobic and oleophobic coating composition on the at least one of the first and second surfaces of the sheet of material to initiate the polymerization of the hydrophobic and oleophobic coating composition disposed on the at least one of the first and second surfaces of the sheet of material so that a hydrophobic and oleophobic polymer coating forms on at least one surface of the sheet of material.