crude petroleum (paraffin wax), or by dewaxing heavy lubricating oils and petrolatum residues (microcrystalline wax); and (4) synthetic waxes generated, for example, by chemical processes including petroleum, Fischer-Tropsch (by coal gasification), polyethylene, polypropylene, acrylate, fatty acid amides, silicone and polytetrafluoroethylene waxes.